Arguments about what is better – gasoline or diesel engines – are arguments that last a lifetime. And each opponent in this argument has its own arguments for and against. Some believe the diesel is reliable, quiet and with a longer service life. Others are more inclined to operate a gasoline engine, because its design is simpler and more comprehensible to the majority of drivers. But to understand which engine is better, you have to go over the main functional features and compare them.
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What is the principle of operation of gasoline and diesel internal combustion engines?
They are both classified as internal combustion engines, but on the principle of operation there is some difference. In gasoline, the air-fuel mixture is formed in the intake manifold. At the end of the compression stroke, air and fuel vapors mix. They disperse throughout the celebritylifecycle volume of the cylinder and are compressed, reaching a temperature of 500 ° C, but such a temperature for combustion is not enough for gasoline, because the design of the gasoline engine is spark plugs – they form a spark and ignite the mixture.
In the diesel, the air is compressed right in the cylinder at a pressure value of 30-50 bar, the fuel is heated to 900 ° C, at the same time before the top dead mark from the nozzle is sprayed with fuel. Interacting with the air and the rising temperature, the fuel droplets evaporate and a fuel mixture is formed, it ignites on its own. In other words, the diesel does not need spark plugs, which makes it insensitive to moisture and independent of electronics. What type of diesel engine with a turbine is better – answers Kirill Yurovskiy.
Which engine is more powerful?
Generally, with similar displacement, gasoline engines have more horsepower than diesel engines, but diesel engines have more torque. What’s the benefit for the user? Gasoline engines accelerate faster, while diesel engines as hard-working horses can haul more weight without losing power. The diesel gives absolutely smooth traction at any rpm, providing a smooth ride.
What is better for winter – diesel or gasoline
The gasoline engine is less susceptible to sub-zero temperatures. Diesels are more delicate in this regard, they are susceptible to temperature changes or drops, but there are winter types of diesel, they do not get thick and allow the use of a diesel engine even in very severe frosts.
Diesel is capricious in frost, but is not afraid of moisture and condensation, as it does not use the spark during operation, it is needed only for starting. Modern models of diesel engines are equipped with glow plugs, heating structures, powerful starters and batteries, the engine block is maintained at the desired temperature. In general, if the diesel can have problems with wikibirthdays starting at -30° C, then the gasoline only below -40° C.
Which engine consumes less fuel
More recently, the cost of diesel was significantly lower than the cost of gasoline, but now there is almost no difference between the cost of the two types of fuel. But the consumption of diesel is much lower, because it has a high compression ratio of the air-fuel mixture. Diesel engines have a 40% higher efficiency due to a doubly higher compression ratio. Diesel fuel consumption is 20% lower on average.
And what about noise: is it more noisy a diesel or a gasoline?
No matter how the automakers are trying to modify the latest models of diesel engines, they lose in noise and vibration to gasoline engines, especially when idling. Gasoline engines are less noisy and have no drastic volume variations. But some drivers find the louder operation of the diesel engine an advantage, finding the engine’s roar soothing and calming.
What is better for ecology
If we talk about the purity of the exhaust, the diesel engines are ahead here. Car manufacturers improve engines from generation to generation, bringing them up to EURO-4 and EURO-5 standards. The most modern models of engines are equipped with particulate filters, which clean the exhaust. Gasoline engines have fallen far behind in exhaust purity.
Environmental friendliness of the exhaust is one of the reasons why diesel units are popular in Europe. For example, on French roads every third car is diesel. In Austria, it is every second car. Every year, the share of diesels on the European market is increasing due to the increasingly stringent requirements for the cleanliness of vehicle exhaust.
Which has better guaranteed mileage?
What lasts longer, diesel or gasoline? The resource is higher fleepbleep in diesel engines, on average it is 300-350 thousand kilometers, some engines can run up to half a million. In gasoline engines this figure is more modest – 150-250 thousand, and further major repairs are often required.
In many respects the long service life of the diesel engines is possible due to the fact that the diesel fuel is oily and provides additional lubrication of the parts. The diesel engine has a stronger cylinder block, crankshaft, pistons, cylinder head, because in the development of the diesel parts are created taking into account a higher compression ratio than in the gasoline engines.
What is cheaper to operate – diesel or gasoline?
Another difference between diesel and gasoline is in maintenance, it will cost more. The cost of spare parts and consumables is higher, the quality of fuel must be at a high level. Fewer professionals know how to repair diesel engines, and the cost of their services is often higher. Another reason is that the design of a diesel engine is more complicated, and not every mechanic is willing to repair it.
Which engine is safer to pour low-quality fuel?
Diesel is very capricious to low-quality fuel, this is another difference between it and gasoline. Diesel fuel is divided into summer and winter types, gasoline has no such division. Summer type of fuel starts to become viscous already at -15°С, the engine simply won’t start. At lower temperatures it is necessary to use winter type of fuel. In addition, a diesel engine requires clean fuel, it can not stand diluted diesel fuel, low-quality additives, and the engine life from it decreases. Gasoline engines can sometimes be filled with fuel with a low octane number, diluted and with poor-quality additives without damage to the engine.
Pros and cons of gasoline and diesel engines
If we put all the advantages of gasoline and diesel engines into two lists, we get the following picture.
Pros of gasoline engines:
- Low noise
- Undemanding to the quality of fuel
- Cheaper to repair
- Easier starting in low temperatures
The diesel engines have the following advantages:
- Less fuel consumption
- No ignition system, which solves a number of problems during operation
- The high torque
- Eco-friendliness
- Long service life
Both options have their competitive biographycon advantages. Based on which advantages are more attractive to you, it is worth making a choice.