Re: Direct Injection

Posted by Diesel Dan on November 25, 1999 at 18:57:32 from (205.216.83.233):

In Reply to: Direct Injection posted by Steve. M on November 23, 1999 at 14:26:15:

Direct injection is exactly as it is said. The fuel under extreme pressure is injected directly into the combustion chamber, usually directly above the piston. Engines of this type are pretty robust and can withstand the sudden pressure of combustion. That's why direct injection engines sound so much louder. They usually have a fair amount of compression and can be overfueled and still create a lot of power. Engines of this type are usually heavier in casting thickness and weight.
Indirect injection can be of several different types. Power cell, precombustion chamber, energy cell, or other such names. These engines usually require glowplugs and a rather high compression. They are usally not very loud and do not require a very heavy block and components to withstand the forces of combustion. Timing has to be controlled to have complete combustion at various loads.Automotive engines are of this type usually for weight and sound.

Diesel Dan

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