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Old 02-23-2012, 08:43 PM   #45 (permalink)
rmay635703
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Quote:
Originally Posted by Diesel_Dave View Post
There are a wide variety of piston bowl shapes, but it you put that thing in a diesel it would smoke like a chimney.

In a direct injection gasoline engine the fuel is injected a long way before top dead center, with the goal being to vaporize and mix the fuel before ignition. In a diesel the piston bowl distributes the burning fuel plume. For this reason, a gas direct injection injector is pointed almost directly downward. A diesel injector is typically more horizontal than vertical, because the fuel in injected near TDC and the shape of the piston spreads out the fuel to mix with the air.
There already have been motors that had multiple injectors on the same cylinder. Perhaps (2) for each, 2 fuel tanks and an MIT concept to improve performance and emissions on diesel engines -> E85 injection

If the vehicle had sensors to know what type of fuel was in the tank it could ration and time it appropriately. Gas, ethanol + diesel mixes operate much like plain diesel with no plug but they require multiple rationed firing events per stroke.

Develope a spark plug or ignition system that can tolerate detonation inside a diesel and a true CNG/Diesel or true e85/diesel motor is possible, then we just need to get rid of pesky emissions BS and get it more standardized.

Oh and I wouldn't mind controlled water injection either but I digress.

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