Ross, I agree with your comment on advances in diesel engines in the new diesel thread;
However, IC engines are changing very fast. I believe the Gas Direct Injection engine is clouding the difference between the CI and SI engine, to the point that it will encompass the best features of both, and run on both fuels too.
http://www.automobilemag.com/featur...ology_of_the_year_direct_injection/index.html
This link shows a pic and describes GDI.
Take your considerable knowledge and extrapolate from there. Think about old semi-diesels, hot bulb engines and 'oil' engines, which were crude multifuel engines, then think about the changes that occured over time.
At first, refined engines required more refined fuels, but now refined engine controls allow more flexible fuel types, including blends.
High compression GDI could be both a diesel, and a gas engine. As soon as the engine bangs off a few strokes, the enigine managment system will analize the sensor data and tune the engine for whatever fuel.
It will be great, you can buy fuel based on cost per BTU. Solid foundations like the W-120 could be the future for MF-DI flight engines. Perhaps the Revetec engine would succeed and be such an engine.
However, IC engines are changing very fast. I believe the Gas Direct Injection engine is clouding the difference between the CI and SI engine, to the point that it will encompass the best features of both, and run on both fuels too.
http://www.automobilemag.com/featur...ology_of_the_year_direct_injection/index.html
This link shows a pic and describes GDI.
Take your considerable knowledge and extrapolate from there. Think about old semi-diesels, hot bulb engines and 'oil' engines, which were crude multifuel engines, then think about the changes that occured over time.
At first, refined engines required more refined fuels, but now refined engine controls allow more flexible fuel types, including blends.
High compression GDI could be both a diesel, and a gas engine. As soon as the engine bangs off a few strokes, the enigine managment system will analize the sensor data and tune the engine for whatever fuel.
It will be great, you can buy fuel based on cost per BTU. Solid foundations like the W-120 could be the future for MF-DI flight engines. Perhaps the Revetec engine would succeed and be such an engine.
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