I want to take a diesel injection pump and pump diesel fuel into a gasoline engine.

Timing accomplished by injection pump geared, belted, or connected to engine by electric motor synchronized to engine speed.

Ignition would be accomplished by removing spark plug and plugging in a custom made external prechamber. Which can be used to ignite fuel with a glowplug inside the prechamber or fuel can be preheated(with electric heater)to autoignition temperature before injection into the chamber.

Why would I do this? Well, heating the fuel in the injection pipe can the fuel into lighter hydrocarbons like a fuel cell reformer increasing mileage.

The question is whether the increased fuel efficiency due to thermal ing will be worth more energy than thermal losses in the external prechamber.
-- danheathmoore, Oct 30 2007

Compression ratio?
-- Texticle, Oct 30 2007


Might wanna move this to either the Car or Product: Engine catagory.
-- acurafan07, Oct 31 2007


Diesel engines run at a higher compression than gasoline engines. It is the compression of the fuel/air mix that raises the temp to ignition. In gasoline engine, pressure is not as great - temp of fuel/air mix is not as high. Think that there would be problems getting all of the mix to temperature required for complete clean combustion across the cylinder. So you would also have to pre-heat incoming air, else it would cool the pre-heated fuel charge too much, of course then you are faced with the problem of getting enough air mass into the cylinder for a good burn.
-- the dog's breakfast, Oct 31 2007


Well, I plan to heat the fuel to about 800F or higher. And possibly heat the prechamber sticking out of the spark plug hole. So, I'm not worried about ignition, just turbulance in the prechamber and of course the biggest problem, injector sealing and failure at those temps!
-- danheathmoore, Oct 31 2007



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