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Diesel engine

Diesel engine

Diesel engine is an internal combustion engine in which:
- air is compressed, the temperature of which rises to 600-700 ° C.
- the fuel ignites when it comes into contact with hot air.

Diesel engines are used only on trucks. Many modern passenger cars have diesel engines, and, for example, in Europe, people even prefer diesel to gasoline engines.

The diesel engine is less powerful than the gasoline engine. With the modern level of technology, it often turns out the opposite. A modern diesel engine can surpass a gasoline engine in power, not to mention torque, which provides flexibility and ease of acceleration control.

Diesel engines are only efficient at high displacement. For a diesel engine, just like for a gasoline engine, there are no volume restrictions. Now cars are produced with a diesel engine volume of 1.1; 1.3 liters, and even motorcycles with a 0.6 liter diesel engine.

Even if the diesel is more powerful, due to its weight, it loses in performance to the gasoline one. Today, diesel engines use the same materials as gasoline engines, so they are not much heavier.

Diesel engine starts worse in winter. If you do not save money on glow plugs and winter diesel fuel, then it will start up in any frost with the same ease.

A diesel engine with a turbine consumes more fuel. Paradoxically, a turbine in a diesel engine, in contrast to a gasoline engine, reduces fuel consumption. This is due to the sharply increasing torque, which allows the machine to be driven more calmly.

The diesel engine must be warmed up for a long time. If the diesel engine is warmed up regularly, carbon and tar residues remain on the valves, which, if accumulated, can lead to a loose fit of the valve to the seat and even its locking. But, nevertheless, turbodiesels need a short warm-up at idle to avoid turbine breakdowns.

The diesel engine is much more difficult to maintain and repair. The design of a diesel engine is much simpler than a gasoline engine, since it ignites not from the spark produced by the spark plug, but from the compression of the mixture in the cylinder. And since simple designs are always more reliable, breakdowns of this type of engine occur much less often. Diesel engines are also much easier to maintain and repair for good reason.

The diesel engine is extremely noisy. A diesel engine with a good muffler and a modern intake system works a little louder than a gasoline engine, but in most cases the sound of modern gasoline and diesel engines is almost impossible to distinguish.

Any diesel requires good fuel. Firstly, many diesel engines, especially atmospheric ones, are absolutely not demanding on fuel. And secondly, even the most whimsical diesel engine can be equipped with a water separator and particulate filter, which will allow you to refuel the car with fuel of any quality.

Gasoline engines are still more reliable - they are better tested. This is not true. Diesel engines have on average 40-50% longer life than a gasoline engine.

It is useless to use complex electronics in a diesel engine. The diesel engine allows the use of any complex systems. So, in a modern diesel engine, such systems as electronically controlled injectors, a common common rail fuel rail and others are used.

It is impossible to force a diesel engine. Yes, diesels are less amenable to tuning than gasoline engines, but it is still possible to increase power by 1.5 times without a significant increase in fuel consumption.

Automatic transmission and diesel are not compatible. The diesel engine mates with the automatic transmission even better than the gasoline engine due to the higher torque, which better drives the torque converter.

Diesel exhaust is more polluting for the environment. With the use of catalytic converters, exhaust gas recirculation and particulate filter, diesel engine exhaust can meet the most stringent environmental regulations.

A diesel car is cheaper than a gas one. With an equal level of equipment, a car with a diesel engine will cost more than a gasoline one due to the use of more expensive electronic and purification systems, but its operation will be cheaper.

The vibration load of the diesel engine is too high. With an even number of cylinders in one row, the vibration load of a diesel engine is quite acceptable, but if it is the other way around, then this statement becomes true.

The diesel engine is filled with the same oil as the gasoline engine. For diesel engines, it is better to use a special oil, and it is worth carefully studying for which types of diesel engines it is intended.


Watch the video: Why Not to Buy a Diesel Car Diesel vs Gasoline Engine (July 2021).