What is the most effiecient internal combustion engine ever invented?
Answers:
Gas turbine engines. Many of these are within 3-4% of the maximum efficiency that the laws of thermodynamics predict such an engine can have. Piston engines don't come anywhere close to those limits.
Rolls Royce
Mercedes Benz Diesel.
The high compression needed to make a diesel engine work properly actually give it the high degree of deficiency.
Any 2 stroke engine..try running a 4 stroke engine upside down and see what happens..a 2 stroke engine has more power,more torque, less engine parts and you can run the upside down (model Aircraft)
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