by suraj khandelwal on January 31st, 2005

suraj khandelwal

Question

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Can you run a 2-stroke spark ignition engine with petrol then later switch to diesel? How would this effect this engine?

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  • by Thom64 on April 18th, 2005

    Thom64

    Probably not very effectively. Gasoline (petrol) has problems at compression ratios higher than about 10-12. Diesel engines need higher compression than this to ignite the fuel. If there was a compromise solution that allowed the use of both, it probably would not be very good at either - the design considerations are just too different. There have been some stratified charge (or other name) combustion engines with modified diesel combustion chambers that could run on a wide variety of fuels... but I have not heard of one that also had spark ignition.

    Since this question appears under automotive transportation, I won't speculate about small model, laboratory or other engine applications.

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