Pros and cons of diesel and gasoline. Diesel or gasoline? What to choose?

Many people, caring about cars, know what are the pros and cons of diesel and gasoline. But, nevertheless, for some, this topic remains unfamiliar. Well, it is advisable to understand every person who has something to do with cars. At least in order to know, the model with which engine to buy it.

Torque and power

This is the first criterion by which to compare powertrains. Gasoline engines are more short-stroke, in contrast to their diesel competitors. Because they have a smaller torque, but more power. And thanks to this feature, the motors can be untwisted to quite high speeds. Due to this, in turn, the car is more dynamic. In this regard, with such units, only new diesel engines equipped with a turbo-supercharging can compete.

In general, it is very difficult to give an answer to the question as to which motor is better. It all depends on the needs of the driver. This is already he decides what he needs - gasoline or diesel. Pros and cons of engines are different too. So, huge advantage of the motors consuming ДТ, is their draft. The torque at these devices is at an altitude. Due to this, diesel engines are very tight.

Economical

The second criterion, which is already more significant and significant, is economy. Many people believe that diesel engines can save a lot of money, because DT is cheap and you need it less. Is it so? So, such power units, as already mentioned, have a very high compression ratio. This increases the so-called efficiency factor. And it is 20-40 percent higher than gasoline engines. Accordingly, the diesel unit spends less fuel per 1 km than its gasoline competitor. And this means that the idea of the economics of such engines is correct.

In addition, it is worth noting that the injection of fuel from them occurs directly into the combustion chamber. That is, fuel does not pass any additional ways and, accordingly, its losses are reduced to a minimum. But in gasoline units fuel is first mixed with air. And it happens in the intake manifold. Although the price is not so different. A pair of rubles a difference per liter between DT and 98th gasoline.

Vibration and noise

This is also worth talking about, talking about the pros and cons of diesel and gasoline. To date, every automaker is actively working to reduce vibrations and noise of diesel engines. Modern engines, working on solar oil, are almost close to the above indicators for gasoline units. But still you can still distinguish them. At least for the characteristic vibration and banging, which appear when the motor is running and running at idle. And the gasoline engine works quietly. Sometimes it's even difficult to determine whether it's started or stalled. In principle, these factors are taken into account by studying the pros and cons of gasoline and diesel engines. But for most, it does not matter. Not such indecently loud these noises and vibrations. If the car, of course, is not 30 years old.

Work in the cold season

This criterion is also important for many people. For them, this is the most important moment in discussing such a topic as the pros and cons of diesel and gasoline. There is also something to say here. More problematic in this regard is the diesel engine. And all because in it fuel ignites independently, because the air is heated very strongly at the time of powerful compression. If the outside temperature is below minus 30 degrees, then a problem occurs. The air does not get warm enough! And the fuel does not fire. And to circumvent this problem, diesel engines use glow plugs. Due to these, it is possible to heat the combustion chamber before operating the unit.

But if it started in the frost at once, then this does not guarantee a smooth trip. If the tank was flooded with summer or low-quality fuel, then in the cold, paraffin crystals are immediately formed in it. They are the "valves" that overlap the fuel-conducting channel together with the filters. And the car can decay on the go. It is advisable in winter not to keep the tank half full. The fuel level should always be the maximum. And gasoline units are immediately launched. The fuel ignites instantly - from a spark. The motorist needs only to control the charge of the battery and to select oil competently.

Service

Another point that should definitely be touched on, talking about the pros and cons of diesel and gasoline. Previously, it was believed that the engines running on solar oil, servicing is not cheap. But now everything has changed. Consumers for them are very inexpensive.

What about repair? Everything is the same as in the case of gasoline brothers. Turbines, rings, crankshaft, cylinders, pistons - nothing new. True, there is one detail called a high-pressure fuel pump. The device is simple. But! It uses the most accurate processing of all parts. And it can not be performed by every master. Because to look for a professional will take a long time. However, in very rare cases a new pump is required. So the risk is minimal.

Ecological compatibility

Another important nuance. Despite the fact that the diesel engine burns fuel very efficiently, it still has more emissions. Because this fuel contains more sulfur. And after its combustion, soot is formed. Often found and smoky diesel. And, finally, one more thing: they say that the products of combustion of this fuel increase the risk of developing human cancer. Gasoline is a lighter fuel. Yes, and it does not burn with such a large formation of various kinds of deposits. This means that machines with gasoline units are much more environmentally friendly.

Cost and Durability

This is also worth considering, talking about the pros and cons of a diesel engine for a car. So, it works at low revs, unlike gasoline. And its operating range is usually 5-6 thousand rpm. In gasoline, in turn, it reaches a mark of 8000-9000. They nursed about 300-350 thousand kilometers - after that it is necessary to do major repairs. In this regard, motors that consume diesel fuel are much more practical. After all, they can pass and a million (!) Kilometers. Breakages, of course, are not excluded, but serious interventions will not be required.

And about the cost. It is higher in diesel engines than in gasoline ones. And again, there is a logically justified reason for this. All because the compression ratio in these engines is higher. So the pistons, cylinder blocks, the crankshaft, the head of the block and the connecting rods of diesel engines are experiencing heavy loads. Accordingly, they are strengthened so that they can cope with all this. And it costs money, because the price for such units is higher.

Security

This is rarely mentioned, talking about gasoline or diesel. Advantages and disadvantages should be considered in more detail, since the topic is not unimportant. So, diesel is, so to speak, a little volatile substance. And this fuel will not ignite from the spark. Many people joke that it is possible to extinguish the match from it (of course, it is not worth checking this statement). And the fact that extremely high temperatures are needed to ignite this fuel makes it safer.

Unlike gasoline! It is an easily flammable substance, also volatile. By the way, it does not burn fuel, but only its fumes. If the fuel is flooded into the tank, and it, in turn, is tightly closed, then it was possible to protect it by 80% from ignition. In general, not the safest fuel. Everyone knows cases when serious accidents took place, cars turned over, broke, and the survivors tried to get out as quickly as possible. Why? But because in such cases the tank is usually damaged, the parts overheat. It is possible that there will be a spark and the machine will simply blow up. In this regard, diesel is more safe. Pros and cons in this case are clear.

The whole truth about gasoline engines

But now it is worth to list separately everything that concerns exclusively this type of units. And later will be considered separately the pros and cons of diesel engines.

The first plus: a relatively inexpensive repair. Less: the ignition system and candles should be monitored. The diesel engine does not. Another nuance: maintenance is inexpensive, but here's the expense of a large (about 1/3). Oil and filter can be changed less often, but the life of the motor is less. It is easy to start in winter, and power will also be less. Works quieter. But the torque is weaker. And, at last, on high turns develops excellent power! But at the start of the diesel version will lose.

What you need to know about the engines on the DT?

Of the advantages of diesel units, first of all there is a small fuel consumption. As already mentioned above, the difference with the gasoline engine is about 30-35 percent. Of the minuses - cheap repairs (in the case of the notorious fuel pump - especially). But this unit has a simple structure. But in winter it is necessary to refuel with special fuel. Otherwise the injection pump can be simply "killed".

Another positive thing is the lack of an ignition system. Negative - you need to acquire "anti-geysers". Even at high speeds, cars with engines working on diesel engines lose their gasoline counterparts. And the old engines are very noisy. And, finally, you can not leave the tank "dry". But there is a big plus, consisting in a huge resource of engines. This can not be forgotten by talking about what is different about diesel or gasoline. What to choose? Pros and cons were listed. So it's up to the drivers to decide.

Illustrative examples

Above there was much talked about what can distinguish motors that consume gasoline or diesel. All the pros and cons were also listed. Now it remains to cite as an example a few machines working on DT. For what? To destroy the stereotype! Many people think that cars that use solar oil are low-power. This is not true. Take, for example, the Dodge Ram 2500 5.9 TD. Its capacity is 325 liters. from.! Plus, this pickup truck can pull a trailer with a maximum mass of 6 tons. Ford F-250 6.0 TD is also a powerful machine. 325 liters. With., Rear drive, totally reinforced construction and a pleasant price of 28,700 dollars (for America, the model's motherland - a little).

The massive Volkswagen Phaeton V10 TDI sedan under the hood has a powerful 313-horsepower engine. A six-speed automatic transmission drives it. The maximum speed is limited by electronics at around 250 km / h, and up to a hundred of the sedan accelerates in less than 7 seconds. And Audi A8 4.2 TDI quattro? One of the fastest cars with TDI in the world! 326 liters. With., Acceleration to 100 km / h - in less than 6 seconds! Powerful machine.

And the BMW 745d? 6.6 seconds to 100 km / h! Mercedes-Benz C320 CDI, BMW 330xd, Audi A4 3.0 TDI quattro ... And this is only a small list of cars that are able to impress with their characteristics! Many, looking at such cars, think that it is really better to take - diesel, or gasoline. Pros and cons, in principle, have been demonstrated in full. The future owners of cars can only make a choice.