Which is better - gasoline or diesel? Which engine is better - “diesel” or “gasoline”? :: SYL.ru
Many people, when buying a vehicle, carefully choose a car. They look not only at the company that manufactured the car and its modification, but also pay attention to the car’s equipment.
And this is not surprising, since two cars that are similar in appearance to each other behave differently during operation. Their main difference is the engine.
And then car owners have a completely reasonable question: “Diesel or gasoline – which is better?” The car seems to be familiar with gasoline and costs much less (by 10–20%), but diesel is cheaper to refuel at gas stations.
Also, almost all car manufacturers claim that diesel is consumed more economically by the car’s engine.
Motorists' doubts
It is useless to ask “experienced” car enthusiasts what is better - gasoline or diesel, since each of them has their own opinion. Some argue that it is impossible to start a diesel engine in winter, or that when refueling with bad fuel, the entire system “flies,” the replacement of which will cost thousands of dollars.
Others say that this is all fiction, and the breakdowns occurred due to the incompetence of the drivers themselves.
Because of such confusion, we decided to look into these issues and find out where the truth is and where the fiction is.
Diesel or gasoline - which is better and what are the differences?
Unfortunately, the question of how one fuel differs from another is also up in the air, since the experts themselves cannot clearly explain it. And the “casket” opens simply.
In a gasoline engine, fuel vapors, mixed with air, are ignited by a spark generated by a car spark plug. And in the diesel version, the vapors spontaneously ignite under the influence of the temperature of the compressed air.
This determines the diverse approach to the design of parts and technical features of engines.
For example, a diesel engine has glow plugs instead of an ignition system, and all components of a diesel engine are made of massive and durable materials that are designed to withstand a strong “explosion” when the fuel detonates.
Pros of a diesel car
Although a car running on this fuel is more profitable, it is difficult to use. But let's first list the positive aspects of this car:
– Economical – fuel consumption is 20-30% less.
– Operation – the service life of a diesel engine is twice as long as that of a gasoline engine (about a million kilometers without major repairs).
– Fuel is 10-20% cheaper.
– The design does not have an ignition system, which means it is more reliable.
– Increased environmental friendliness – the level of carbon dioxide is very low, and smoke and soot come out only from faulty engines.
It would seem that after weighing all the advantages of such a car, you can immediately solve the question: “What is better – gasoline or diesel?” However, these cars also have their downsides.
Disadvantages of diesel
– The engine system is unstable to low-quality fuel entering it - the injectors “fly” quickly.
– Maintenance costs several percent more than for a gasoline-powered car.
– It takes a long time to warm up, and during the trip, especially at the beginning, it “knocks” a little.
Popularity of diesel cars
Research by international experts shows that a quarter of all new cars in the world coming off production lines are equipped with a diesel power unit.
Every year the reputation of these machines only grows.
If 10–15 years ago only every tenth passenger car was diesel, then, according to experts, by 2018 every third car will be equipped with this particular type of engine.
The reasons for this pace are obvious - rising prices for gasoline and constant strict control over environmental standards for the emission of automobile exhaust. Also, such cars can be fueled with biofuel (rapeseed).
However, despite the great benefits of purchasing such a car, in our country the question of what is better - gasoline or diesel - is still decided by money. After all, a gasoline car is 20% cheaper than a diesel one, and you don’t want to wait until this difference pays off.
Winter and engine problems
Almost every professional knowledgeable in the automotive field claims that problems with the diesel system can arise in winter if you fill your car with diesel fuel that is not appropriate for the season.
After all, diesel fuel, according to its characteristics, is divided into summer and winter. Thus, the first category of diesel is 25% cheaper in summer, but the pour point is -50 C. Winter diesel fuel does not harden to -350 C.
Therefore, only seasonal diesel fuel should be delivered to gas stations. But, unfortunately, this is not always done. In addition, most gas stations are trying to sell off the remaining summer diesel when it’s already frosty outside. Thus, a car owner who has filled his diesel car with off-season fuel may experience serious problems with the engine.
But still…
Despite all the weaknesses of diesel engines, most people who use such cars do not even consider the question of which is better - gasoline or diesel. After all, if you properly operate a car using such fuel, you can drive it for a very long time.
Thus, there are known cases when owners of diesel cars drove them for 20 years, having a mileage of about one million kilometers, while the mileage of gasoline cars of the same models was limited to a maximum of 500 thousand.
If a person buys an expensive car, then there is a reason to choose the diesel version.
Also, DT cars are much more economical. Diesels consume 3-4 liters of fuel per 100 kilometers, which is 2-3 times less than gasoline engines. Thanks to this, within 2-3 years of constant use of the car, you can recoup the difference in price.
Next, we will consider this issue using specific examples.
BMW: diesel or gasoline - which is better?
Judging by the reviews of owners of certain models of the BMW family, preference is given to the gasoline version. Although, again, this is most likely a tribute to tradition.
The gasoline unit, naturally, is much stronger than its diesel “brother.” If you want to feel the “spirit of speed”, then you should choose a car with such traction.
However, this “horse” likes to eat well – fuel consumption is 10–15 liters/100 kilometers.
At the same time, the diesel version offers a quieter and more comfortable ride and fuel consumption will not exceed 6 liters. But, as the owners note, in this model of car the engine knocks harshly at idle, and a slight vibration is felt in the cabin. And the cost of a diesel engine is 200–300 thousand more than its gasoline counterpart.
The survey was conducted among BMW X5 car owners. Each of them emphasized the advantages of their model and the disadvantages of the other. For BMW X5, diesel or gasoline - which is better? It's quite difficult to choose. It all depends on the needs of the future owner.
Which UAZ to choose?
But the opinions of the owners of the UAZ “Patriot” lean more towards the diesel version. After all, it “eats” within 8-10 liters/100 kilometers, and this is with the air conditioning on and the car weighing 2.5 tons.
However, problems arise when refueling a car with low-quality fuel, which can easily “kill” a diesel engine, and repairing it will take the last pants off.
And in winter it takes longer to warm up.
But, despite these disadvantages, people still, when asked which UAZ is better - “diesel” or “gasoline”, recommend the first option, since the gasoline model consumes an average of 15 liters/100 kilometers. If you treat your “iron horse” carefully, it will last a long time without serious breakdowns.
If the owner often drives a car, then the economic component of the question: “UAZ “Patriot” diesel or gasoline - which is better?” definitely weighs in favor of the first option.
Kia Sorento
People use these criteria when choosing Kia Sorento car models. Despite the fact that a diesel engine takes longer to warm up, it can fail due to unseasonal fuel, and its repair will cost tens of thousands of rubles, people’s positions are clear.
Kia Sorento diesel or gasoline – which is better? For users, this is not an issue, because the first option is much preferable to the last, despite the capriciousness of the diesel unit to weather conditions and fuel quality. After all, a gasoline model consumes up to 20 liters of fuel in winter, and about 14 at speed in summer.
At the same time, the diesel modification consumes about 10-11 liters in municipal mode.
It is this reason that forces car owners to choose a car with a diesel engine, and finding high-quality fuel is not a problem today. There are many branded, reputable gas stations that sell seasonal, high-quality diesel fuel.
"Renault Duster"
But the attitude towards this car is exactly the opposite. Car owners have no doubt which model to buy. Renault Duster petrol or diesel - which is better? The latest version of the car has a weak engine (90 horsepower), acceleration time is about 16 seconds, in winter it may not even start and costs almost 100 thousand rubles more than its gasoline “brother.”
However, we again encounter a certain approach to transport technology. After all, there are no problems with a diesel power unit if you drive in normal mode and refuel with high-quality fuel at proven and reputable gas stations.
Walk-behind tractors
“Which walk-behind tractor is better – diesel or gasoline?” - this is the question asked by many farmers and ordinary people who want to acquire an assistant for economic and household affairs.
There are many fans of both one option and the other. Thus, diesel costs 3–4 times more and is heavier than gasoline.
But fuel consumption is 2-5 liters/100 kilometers, which, together with wise operation, will quickly pay for the device.
A gasoline walk-behind tractor is lighter and more maneuverable, it is cheaper to operate and repair, and it is easier to start in winter if it is necessary to clear the area of snow.
But there is a significant drawback: it is filled with high-quality 92 gasoline, or better yet 95 gasoline, while fuel consumption is 1-2 liters per hour, depending on the model and power of the walk-behind tractor, and the diesel version of the same model “eats” 300 milliliters at one o'clock.
But still, gasoline units are in great demand, since they are less demanding and capricious in operation.
Conclusion
To summarize all that has been said, we come to the conclusion that it is difficult to choose the best of these two options. Each person makes a choice for himself according to his needs and capabilities. After all, the answer to the question of which engine is better – “diesel” or “gasoline” – lies in the plane of personal preference.
So, a diesel engine is much more economical than a gasoline engine. The savings lie in both the amount of fuel consumed and the cost of refueling the car, as well as in the environmental performance of such an engine. Such cars are also more resistant to wear of engine components. But these are all its positive sides. And then the continuous disadvantages begin.
A diesel engine produces more noise and vibration during operation. He is very picky about the quality of the fuel he fills.
If in Europe there are practically no problems with this, then in our country many gas stations (thank God, not all) can sell you low-grade and out-of-season fuel, which will lead to engine failure, and its repair will cost a lot of money. Also, due to poor-quality diesel fuel, the car may not start at all in winter.
Diesel engines, unlike gasoline vehicles, have less power; it is necessary to constantly monitor the oil level in the system.
Therefore, the conclusion and recommendations may be as follows: if you are purchasing an expensive car that you are going to use frequently, then a diesel engine will be the best choice. Only in this case is it necessary to constantly monitor the quality of the fuel, refueling at gas stations that have been proven by time and people.
If you are purchasing an ordinary inexpensive car of small capacity or a compact car, then it is best to take the gasoline option, since there will not be much benefit in the diesel version, but there will be less hassle.
Source: https://www.syl.ru/article/200492/new_chto-luchshe—benzin-ili-dizel-kakoy-dvigatel-luchshe—dizel-ili-benzin
Which engine to choose: diesel or gasoline?
Which car should I buy?
Hello, dear readers of the Kak-Kupit-Auto.ru .
Diesel or gasoline, which is better? Which engine to choose? Why is a gasoline engine better than a diesel engine, and why is diesel better than gasoline? These questions arise before everyone who is planning to buy a car, so let's figure out which engine will be the best option for you: gasoline or diesel ?
Petrol or diesel?
Both gasoline and diesel belong to internal combustion engines (abbreviated as ICE) and we, dear readers, need to choose the most suitable one.
In fact, modern cars also use electric engines and hybrid power plants (when the internal combustion engine is paired with an electric motor).
Hybrids are becoming more and more advanced, there are more and more of them on our roads, but their electrical part is still not flawless, that is, it has more disadvantages than advantages. Electric cars don't stand up to criticism yet.
To operate an electric motor, you need a capacious source of energy, the development of which is still very slow, so the palm of the championship among automobile engines is firmly held by His Majesty the good old internal combustion engine.
It would seem that for 100 years, internal combustion engines have been brought to almost perfection, but designers continue to work on them, constantly reducing fuel consumption and increasing power. So, petrol or diesel? Which engine to choose?
To choose a diesel or gasoline engine , we will assume that they are installed on the same cars, with the same weight, and the volumes of each of our engines are approximately equal. Let's start the comparison with fuel consumption .
With the same volume, a diesel engine will show significantly lower consumption than a gasoline engine, by about 20 percent. And if the consumption is lower, then the range of the diesel engine on one tank will be greater, that is, you will have to stop at a gas station much less often.
The maximum power , with the same engine size, will be greater for a gasoline engine , but the torque is much higher for a diesel engine , and it is available from the lowest speeds.
High torque , which literally shoots the car forward, even from the lowest revs, is perhaps the main advantage of a diesel engine , apart from its modest appetite.
But the maximum speed will be higher for a gasoline engine , since it has more maximum power .
It should be noted that diesel somewhat more reliable than gasoline, because it works without the use of the vehicle’s electrical systems, but if it does fail (usually the fuel system), then diesel is more expensive to repair a gasoline engine.
Looking at the price tags when choosing a new car , you may notice that the diesel version is slightly more expensive than gasoline, and with subsequent use you may find that its maintenance is more expensive . There is nothing to be done; a diesel engine is a more delicate mechanism and requires higher qualifications to maintain. Not every car service center will undertake diesel repairs , this is a minus, and an important one, keep this in mind when buying a car with a diesel engine.
The service interval for diesel engines is shorter than for gasoline engines, which means that maintenance will have to be done more often. At the same time, the service price for diesel engines will also be slightly higher .
From all this we can conclude that a diesel engine is more expensive than a gasoline engine, but this is only in the short term. If you plan to own a diesel car for 5 years or more and drive at least 20 thousand km.
every year, then diesel will definitely pay for itself, because all this time low fuel consumption will continuously save you money.
The long-term operation of a diesel engine is also supported by the fact that diesel engines also outperform gasoline engines in terms of service life.
Durability is another important advantage of diesel engines .
A diesel engine can run twice as long without major repairs as its gasoline counterpart, so a car with a diesel engine loses value more slowly than gasoline.
Now let's talk about the main , in my opinion, disadvantage of a diesel engine .
The fact is that in cold weather of 15°, summer diesel fuel thickens, stops passing through the fuel filter and the car completely refuses to start .
In winter, a diesel engine needs good winter diesel fuel , which does not thicken at subzero temperatures. But we produce very little of this winter fuel, and even in January-February gas stations sell regular summer diesel fuel.
So, if such frosts are not uncommon in your region, then think carefully before buying a “tractor”. Consult with experienced diesel drivers and find out which gas station always has high-quality winter fuel .
Previously, diesel engines also had such a disadvantage as vibration , but in modern cars this problem has been solved, which means this factor can be neglected, so we will not discuss it.
A diesel engine much heavier than a gasoline engine, so the cars have a slightly different weight distribution. The center of gravity is higher , the front of the car is heavier - all this leads to a slight decrease in maneuverability .
The disadvantages of diesel engines include the fact that diesel engines a very long time to warm up .
This becomes noticeable in winter, when, having got into the car, you want to warm up as quickly as possible, but the diesel engine begins to heat the interior only after 10-15 minutes of heavy traffic.
Needless to say, at idle speed, warming up a diesel engine in severe frost can take half an hour, or even a whole hour; very little heat is generated when a diesel engine is running.
If you care about the impact your car has on the environment , then you should definitely choose a diesel engine , since its exhaust is much less toxic than a gasoline engine. In addition, modern diesel engines of passenger cars are also equipped with a particulate filter, thanks to which the exhaust from such an engine is almost invisible.
Diesel or gasoline, which is better?
The gasoline engine in passenger cars can be considered a classic, but diesel engines began to be installed relatively recently, so let’s summarize by collecting the pros and cons of a diesel engine compared to a gasoline engine.
Diesel advantages:
- Economical and longer range
- Environmentally friendly (less harmful emissions)
- High torque (good acceleration)
- Durability
- Reliability
Diesel disadvantages:
- Higher car purchase price
- High cost of repair and maintenance
- Complex diesel design - not every service can carry out repairs
- Possible problems with starting in severe frost
- Takes a long time to warm up
In general, a diesel engine is more powerful, a little more expensive, but less voracious, and in severe frost it may not start in the morning. The gasoline engine produces a higher speed, is cheaper, and unpretentious, which is perhaps why it is more common.
I hope, dear readers, that thanks to this article you can now decide whether a diesel or gasoline engine . I wish you a happy car purchase and successful engine starts in any situation!
Source: http://kak-kupit-auto.ru/kakoj-kupit-avtomobil/dizel-ili-benzin/
Gasoline or diesel. What's better?
There is a real “war” going on between gasoline and diesel engines. Leading manufacturers, in order to meet market needs, produce models with power plants of both types. It is impossible to say for sure which type of engine is preferable, but we still suggest that you understand all the nuances in order to make the right choice.
Operating principle of engines
Petrol. The mixture of fuel and air is formed not in the cylinder, but in the intake manifold; the air is finally mixed with gasoline vapor at the end of the compression stroke.
A homogeneous fuel mixture is formed in the combustion chamber, and as a result of compression (the piston moves from top dead center to bottom), the fuel heats up to 500 degrees.
At the end of the cycle, the spark plugs produce a spark and ignite the fuel.
Diesel. In the engine cylinder, only air is compressed, the pressure is 30-50 bar. As a result of the high level of compression, the air heats up to 700-900 degrees. The injection pressure of modern engines is 1500-2000 bar.
Diesel fuel begins to spray in the combustion chamber, small drops evaporate, and a heterogeneous, inhomogeneous air-fuel mixture is formed. It forms faster, self-ignites and burns well.
Glow plugs may be included, but they are used not for ignition, but for heating the air.
Advantages and disadvantages of gasoline engines
Advantages of a gasoline unit:
- The gasoline engine is 30-35% more powerful than its diesel counterparts;
- Low noise and vibration levels (at high speeds the engine is twice as quiet);
- Normally tolerates not the highest quality fuel;
- Easy maintenance, spare parts are 30-50% cheaper;
- Frost resistance, fast heating.
Minuses:
- Gluttony: impressive fuel consumption;
- A gasoline engine has one and a half times less “lifespan”;
- Low torque at low speeds.
Advantages and disadvantages of diesel engines
pros
- Environmental friendliness: less carbon dioxide is released into the atmosphere, for progressive European countries this is a weighty argument;
- The price of fuel is 10-15% cheaper than gasoline;
- Efficiency – a diesel engine consumes almost half as much fuel;
- More reliable, 1.5 times longer service resource;
- Not afraid of water;
- Diesel oil also acts as a lubricant.
It would seem that this is an ideal option, but the list of shortcomings of diesel units is impressive, although they are all very subjective.
Minuses:
- Takes longer to warm up and makes more noise;
- Sensitive to low-quality fuel;
- Afraid of low temperatures;
- Maintenance is more expensive (the price of spare parts is 30-50% higher); not all service stations undertake repairs of diesel engines;
- Heavy weight;
- Less powerful, worse acceleration dynamics.
Gasoline or diesel?
The list of advantages and disadvantages looks impressive, but let's look at each issue in more detail.
https://www.youtube.com/watch?v=vlCvclZzOD8
Price policy. In terms of efficiency, diesel definitely wins. If you are buying a car for more than just weekend trips with friends, a vehicle with a diesel powertrain is preferable. True, the difference in price compared to gasoline analogues is significant: +15-30%. Experts predict that by 2018 the share of diesel cars will increase from 25% to 40%.
Winter maintenance. If there are no special problems with gasoline units, then a car with a diesel engine does not like to “sleep in the open air” and also endure frosts without complaint.
However, it is easy to start a working diesel engine if the following conditions are met: normal fuel, a working starter and battery, and a well-functioning fuel supply system.
Diesel fuel comes in two types: summer (cheaper, but even with a minimal drop in temperature it waxes) and winter (withstands up to 35 degrees). The driver’s task is to find a gas station with high-quality, and, most importantly, seasonally appropriate fuel, otherwise you won’t have any problems.
Gasoline units are not so demanding on the quality of the mixture, and they can withstand temperature changes more easily. Some motorists use the so-called “antigel”; it lowers the pour point of diesel fuel by 10-15 degrees. However, for new cars this method is prohibited by the automaker, otherwise the terms of the warranty are violated.
Exploitation. Diesels warm up worse, operate twice as loud at high speeds, but at the same time they are distinguished by high performance and wear resistance. Diesels are often installed in SUVs: the torque at low speeds is high, but gasoline power plants cannot boast of this.
A diesel engine is also good for its “indifference” to water: even a unit completely immersed in liquid will work normally, the main thing is that moisture does not get inside. With gasoline engines, due to high humidity, the electrics can quickly fail. At low loads, the diesel engine warms up weakly, but cars are equipped with special heaters for these purposes.
Does it matter where the heat in the cabin comes from? – the main thing is not to freeze in it in winter.
Service. Even with proper operation, after a mileage of 250-300 thousand kilometers, the fuel system will require major repairs.
A gasoline engine has more vulnerabilities: it requires precise debugging of the ignition and injection systems; diesel analogues do not have access to complex electronics, so it is easier to determine the cause of the malfunction.
There is also a fly in the ointment: servicing a diesel engine will cost significantly more, and not every service station undertakes this: the shortage of good diesel specialists makes itself felt.
It is advisable to buy diesel if:
- The annual mileage of the car is at least 30,000 kilometers (after 20 thousand, significant savings will be noticeable);
- There are reliable points where you can buy high-quality diesel fuel (especially in winter);
- Do you have a garage or nearby covered parking;
- You often take long trips.
It is better to pay attention to the gasoline analogue if:
- You have a limited budget (the basic version with a diesel engine will cost 2-5 thousand dollars more);
- You are a resident of a metropolis and often sit idle in traffic jams;
- You make frequent but short trips;
- The car “sleeps” under the entrance or in the yard.
The ideal option is a symbiosis of a diesel and gasoline engine, but until it is invented, choose a power plant that will suit your lifestyle!
Kolodiychuk Andrey , specially for ByCars.ru
Source: https://bycars.ru/journal/benzin-ili-dizel_1872
Which is better, gasoline or diesel? — DRIVE2
For many decades, there has been a “war” between gasoline and diesel engines, the existence of which makes no sense to dispute.
Today, many automakers supply the same models with both gasoline and diesel power plants, so it is impossible to say that one or another type of engine is preferable. But we will still try to find out everything about the advantages and disadvantages of gasoline and diesel, so that you make the right choice in the future.
There are often topics on auto forums where motorists write about using gasoline for diesel engines and vice versa.
Let us immediately hasten to warn you that using fuel of a type not intended for the engine is complete nonsense and the first decisive step towards the death of the engine of your “steel horse”. It's all about the fundamental difference between diesel and gasoline engines, which differ in the way the working mixture is ignited in the cylinders. What are these principles?
How does a gasoline engine “live”? The air-fuel mixture in such a power plant is formed outside the cylinder, namely in the intake manifold (this, of course, does not take into account the possibility of direct injection). The final mixing of gasoline vapor and air occurs at the end of the compression stroke.
Then a fuel mixture is formed in the combustion chamber of the engine, called homogeneous and distributed evenly throughout the volume. Compression leads to an increase in the temperature of the mixture, which heats up to 500 ° C, which is significantly lower than the temperature required to ignite gasoline. After this comes the turn of the spark plugs, which give a spark and ignite the mixture.
As you can see, everything is quite simple if you get into it. For those who have not thought about this, the meaning of the definition “internal combustion engine” immediately becomes clear. Diesel units are also called internal combustion engines, but their operating principle is fundamentally different from gasoline units. All the disadvantages of gasoline engines are offset by the operating principle of diesel engines. Judge for yourself.
In the cylinder of such an engine, only air is compressed, which is subjected to a pressure of 30-50 bar. As a result of compression, the air heats up to 900°C. In this case, diesel fuel is sprayed into the combustion chamber before the top dead center of the piston. Fine droplets of diesel fuel evaporate and an air-fuel mixture is formed.
By the way, the formation of a mixture in a diesel engine occurs an order of magnitude faster than in a gasoline engine. That is why the result is a heterogeneous or, as it is also called, a heterogeneous mixture, which self-ignites and burns well. So, we have figured out the operating principles of different types of engines.
Now is the time to move directly to their disadvantages and advantages, which cannot be stated unambiguously, because in certain situations any minus of the engine can turn into a plus, and vice versa.
In Russia, gasoline engines are more popular than diesel engines, and this can be explained quite simply. The reason lies in our minds and the stereotypes that are stuck in it like splinters.
We are accustomed to the fact that in the Soviet era, diesel power plants were installed on heavy agricultural equipment, such as KAMAZ trucks and Belarus tractors.
But few people know that passenger cars, which were mostly exported, were also equipped with diesel engines.
Statistics show the popularity of diesel engines. Thus, in France, every third car is “powered” by diesel fuel, and in Austria, about 50% of cars are equipped with diesel engines. Perhaps the Europeans know something they forgot to tell us? Let's find out. Engine efficiency and power It is generally accepted that the diesel engine wins in terms of efficiency.
In fact, they used to think so because diesel fuel was much cheaper, but today the difference in price between gasoline and diesel has practically been leveled out. However, diesel engines still remain less voracious.
This is achieved thanks to a high compression ratio (20 units for diesel, 10 units for gasoline), which allows it to surpass the efficiency of a gasoline unit by about 40%, which, naturally, is a fairly serious claim to victory. In other words, combustion of the working mixture in a diesel engine is more efficient.
Owners of cars with diesel engines know that their fuel consumption will be 20% less than that of their fellows who sacrifice to the gasoline god. However, this in no way detracts from the advantages of “lighters”, which can also be quite economical.
At the same time, gasoline engines have more power.
For example, a Mercedes-Benz in the W124 body of the diesel version of the E 200 D model hides only 75 “horses” under the hood, while the gasoline analogue of the “Merce” has a herd of 136 “horses”.
However, there is also a nuance here: the relatively small diesel power is more than compensated by smooth traction at absolutely any speed, which gasoline power plants can only dream of.
Noise characteristics
It is obvious that diesel engines create more noise and more vibrations. Here's a plus that suddenly became a minus. It's all about high pressure during fuel combustion.
However, here you don’t need to blame the engine, but pay attention to the sound insulation: if it is good, you are unlikely to be able to tell by ear which engine is installed while sitting in the car. Also, a lot depends on how you feel about this or that shortcoming of the car.
Some scientists claim that the rumbling sound of a diesel engine at idle is very similar in frequency to a cat's purring. And, as you know, this sound calms a person and even has healing properties.
Exhaust gases The popularity of diesel engines in Europe is explained primarily by the fact that they are more environmentally friendly. In the past, riding in the tail of a diesel car promised unpleasant odors and clouds of acrid black smoke. Modern diesel units comply with Euro-4 standards, and the unpleasant smell is all a matter of taste.
Many people do not like the smell of gasoline, and many do not mind the sweetish aroma of diesel fuel. Operating issues Gasoline engines are less durable than diesel engines. This is due to the more rigid and durable design of the cylinder block, parts of the cylinder-piston group, crankshaft and cylinder head.
In addition, diesel fuel also contributes to longer engine operation, because this type of fuel also plays the role of a lubricant to a certain extent. But all of the above is just a theory, because the quality of diesel fuel at Russian gas stations leaves much to be desired.
Here we must pay tribute to gasoline engines, which are more resistant to low-quality fuel.
In addition, diesel engines are very sensitive to low temperatures. Or rather, diesel fuel does not like it when the thermometers fall below the baseboard. But this can be solved with the help of special types of fuel, as well as with the help of modern heating systems.
The low frost resistance of diesel engines is compensated by the fact that such engines are not afraid of water at all. After all, electricity is only needed to start a diesel engine, then it works without the use of electrical circuits. That is why diesel engines are often installed on SUVs and tanks, which, as you know, are not afraid of dirt. Maintenance problems
Probably the issue of engine maintenance is the most important in this entire history of internal combustion. The low quality of Russian diesel fuel, which we discussed above, leads to the fact that owners of diesel cars have to change oils and filters relatively often, as well as regularly carry out compression checks in the cylinders.
If we talk about repairs, then service stations less often undertake to restore diesel engines due to their complex design. In addition, repairing a diesel engine is usually more expensive, especially when it comes to a high-pressure fuel pump (a new injection pump costs the same as a used foreign car).
But the resource of the diesel power plant does not leave the slightest chance for its gasoline competitor. That is why MAZs and KAMAZs from the past still roam Russian roads, sometimes driving up to 3 million kilometers.
Now let's look at the benefits of each of our contenders.
Advantages of gasoline engines
Advantages of diesel engines
low vibration and noise levels
efficiency
relatively high power
relatively low cost of diesel fuel
can operate at high speeds without negative consequences for the engine
decent pulling force at low revs
copes well with low-quality fuel
not afraid of water
availability of spare parts
lack of ignition system
comparatively cheap to maintain
durability
starts well at low temperatures
diesel fuel acts as a lubricant
—
environmental friendliness
Diesels have more disadvantages, but you should remember that all the disadvantages are subjective.
Disadvantages of gasoline engines
Disadvantages of diesel engines
higher fuel consumption
large mass
maximum power can be achieved in a small rpm range
low power
less durable
increased noise
—
poor acceleration dynamics
—
sensitivity of the fuel system to low-quality fuel
—
low frost resistance
—
intolerance to high revs and speeds
—
requires oil and filter changes more often
—
A diesel engine requires a larger battery to start
—
high cost of maintenance
—
rather unpleasant exhaust characteristics
—
not all service stations undertake diesel engine repairs
Thus, we conclude that only combining all the characteristics of gasoline and diesel engines can provide us with ideal car engines in all respects. In the meantime, all that remains is to be guided by your own preferences and wait until scientists finally learn to place miniature nuclear reactors under the hoods of our cars.
Source: https://www.drive2.ru/b/467204207070412852/
Gasoline and diesel engine. What's better?
Every car enthusiast who plans to buy a car asks the question: “Which engine is better: diesel or gasoline?” It is difficult to find an unambiguous answer, since the choice of a specific power unit depends on many factors: the type of car body, its purpose, the characteristics of the area where the car will be operated, etc.
Motors of any type have their advantages and disadvantages, so take your choice seriously, because the fuel consumption of the vehicle, its acceleration time to 100 km/h, maximum speed and other important characteristics depend on the engine.
Operating principle of motors
Both diesel and gasoline power units are internal combustion engines.
In a gasoline engine, the air-fuel mixture is formed in the intake manifold, that is, outside the cylinder. At the end of the compression stroke, gasoline vapor and air are mixed.
This homogeneous mixture is evenly distributed throughout the volume. The result of compression is an increase in the temperature of the mixture to 500˚C - this figure is lower than the ignition temperature of gasoline.
The spark plugs provide a spark and the mixture ignites.
In a diesel engine , only air is compressed at a pressure of 30–50 bar. As a result of compression, the air temperature rises to 900˚C.
At the same time, diesel fuel is sprayed into the combustion chamber before the top dead center of the piston.
Small drops of liquid evaporate, forming a fuel-air mixture, which is called heterogeneous - it spontaneously ignites and burns.
Engine efficiency and power
The combustion of the working mixture in a diesel engine is more efficient. This is possible due to the high compression ratio: 20 units for diesel versus 10 units for gasoline. The efficiency of a diesel engine is 40% higher, and fuel consumption is 20% less. The gasoline unit has more power.
Noise
Due to the high pressure during fuel combustion, diesel engines create more noise and vibration, but the situation is saved by high-quality sound insulation of the car.
Exhausts
Diesel versions of internal combustion engines are considered more environmentally friendly. Modern units fully comply with Euro-4 standards and are equipped with a particulate filter, which minimizes the impact on the environment.
Safety
The difference between diesel and gasoline fuel is this: diesel evaporates more slowly, which reduces the likelihood of fire. In addition, diesel units do not use an ignition system.
Exploitation
Theoretically, a diesel engine is more durable due to a rigid and durable cylinder block, crankshaft, elements of the cylinder-piston group, and cylinder head. However, this characteristic directly depends on the quality of diesel fuel. From this point of view, the gasoline unit is less demanding and more resistant to low-quality fuel.
A diesel engine, unlike its gasoline counterpart, does not tolerate low temperatures. Already at -15˚С, summer diesel fuel thickens and stops passing through the fuel filter, as a result of which the car refuses to start.
However, the problem has a simple solution - the use of special types of fuel or the installation of modern heating systems. In addition, diesel engines take a long time to warm up, so the interior will become warm only after 10–15 minutes of intense driving.
If you live in an area where severe frosts are not uncommon, give preference to a gasoline unit.
In addition, diesel is not afraid of water, since electricity in such motors is used only for starting. That is why SUVs and crossovers are equipped with diesel units.
Service
Owners of cars with diesel engines have to change filters and oils more often and check compression in the cylinders. Such units have a complex design, so car service specialists will not be able to fix every breakdown. Diesel engine repairs tend to be more expensive.
Diesel requires large capital investments, but only in the short term. If you are buying a car for a long time (from 5 years) and plan to drive at least 20 thousand kilometers a year, then thanks to its low fuel consumption, diesel will save you money.
Price
Diesel is more expensive than gasoline, but keep in mind that maintaining such an engine will require large investments.
Diesel or gasoline: pros and cons
|
Gasoline engines |
|
|
pros |
Minuses |
| ☑ Low noise level ☑ High power ☑ Ability to operate at high speeds without consequences for the engine ☑ “Resistance” to low-quality fuel ☑ Availability of spare parts ☑ Cheap maintenance ☑ Ability to withstand low temperatures well |
☒ Higher fuel consumption ☒ Less durability ☒ Ability to achieve maximum power in a small rpm range |
|
Diesel engines |
|
|
pros |
Minuses |
| ☑ Economical ☑ Low fuel cost ☑ No ignition system ☑ High torque ☑ Durability ☑ Environmental friendliness ☑ Possibility of contact with water |
☒ Large weight ☒ Less power ☒ Sensitivity to low-quality fuel ☒ Low frost resistance ☒ High cost of maintenance ☒ Impossibility of repair in most cases |
What's better? Which engine is more reliable? Each car enthusiast will answer these questions independently based on his priorities - power or efficiency, low or high frost resistance, etc. An ideal engine is a unit that combines the advantages of diesel and gasoline engines.
Source: https://www.Kia-favorit.ru/articles/rekomendacii-specialistov/dizel-ili-benzin/
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