The common Turbo on the market is generally used in Diesel and Petrol engines,but do you know the differences between Diesel and Petrol engine? And how Turbo affect the Diesel and Petrol engines?
Diesel
First of all, diesel isn’t as much combustible as petrol, which means that the air/fuel mix in the combustion chamber of diesel engines needs to be at a higher pressure to ignite. These higher pressures mean that diesel engines need to be stronger than their petrol engine counterparts, so they need bigger, heavier components.These components are hard to rotate at high speeds, therefore the diesel engines typically operate at much lower and narrower RPM band. This lower RPM makes it more difficult for a diesel engine to draw in enough air into the combustion chambers.
Diesel also burns at a lower temperature to petrol, meaning that it creates more exhaust gases.
Therefore diesel turbochargers are generally larger than their petrol counterparts, with a large turbine section, which is capable of handling both the high volume of exhaust gases, and need to provide enough air intake to keep the cylinders filled.
Petrol
Petrol is more easily and burns much hotter, so the pressures inside the combustion chambers don’t need to be as high. This means that the components can be smaller, and that the engine can operate at a much higher and wider RPM band.
Because petrol engines operate at higher RPMs, and petrol burns at a higher temperature than diesel, petrol engines tend to run hotter than diesels.
With petrol engines, the addition of a turbo is all about increasing engine power, so the goal is to increase the pressures inside the combustion chamber. This means that petrol turbochargers tend to be smaller, and designed to run at much higher RPMs, providing a higher boost in pressure, without significantly increasing airflow.
These are difference between Diesel and Petrol engine, which makes the Turbo being produced in different requirement, so which kinds of engine and Turbos is for your vehicle?
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