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The efficiency of a internal combustion engine varies with size, speed range, compression ratio etc.
Diesel engines use higher compression ratio and operate without throttle control, therefore their efficiency is higher than a equivalent Otto engine.
Large marine (read ship engines) or stationary diesel engine: 50%
Heavy duty diesel engines for marine, stationary and vehicle applications (trucks): 40%
Light duty diesel engines (cars): 30-35%
Gasoline engines: 20-25% + a few % for newer engines
The numbers mentioned above are maximum efficiency, not pedal to the metal efficiency.
Please note that the thermal efficiency of a engine will increase if the combustion chamber surface decrease(!). Higher revs leads to higher forces acting on the piston rings and therefore higher frictional losses, in other words: the mechanical efficiency decreases with increased speed.
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Is a combustion engine or a jet engine more efficient?
can't be sure, but i would definably say jet engine, or else they would use combustion engines with propellers on every airplane
Which are negative impacts that the internal combustion engine has had on society?
efficient travel and noise pollution
What is an example of a sentence using the word Combustion?
Combustion engines are very efficient. Combustion does not provide much energy.
What happens if petrol mix with engine oil in a 4 stroke engine?
If petrol mixes with engine oil in a 4 stroke engine then the mixture becomes thick and its combustion will not be efficient. The exhaust will be smoky due to this incomplete combustion. also this will reduce engine efficiency.
Successful attempts to make the internal combustion engine more efficient in the 19th century resulted in an increase in the demand for?
Petroleum
What is DI?
DI means Direct Injection. Diesel engine depending on combustion categorised in Direct injection or InDirect injection Engine. Direct Injection engine combustion takes place directly above the piston. But indirect injection combustion initially takes place pre-combustion chamber and after transfered to above piston.DI engine more fuel efficient, easily start in cold condition, But Noise more.
What is the most important difference between and internal combustion engine and an external combustion engine?
in internal combustion engine combustion happens internally in cylinder and in external combustion engine combustion happens externally in boiler
What is the most important difference between an international combustion engine and an external combustion engine?
in internal combustion engine combustion happens internally in cylinder and in external combustion engine combustion happens externally in boiler
What type of combustion engine is the steam engine?
It is External-combustion engine.
Is steam power plant is internal combustion or external combustion engine?
A steam engine is an external combustion engine.
Internal combustion engine of a gasoline engine?
a gasoline engine is an Internal combustion engine
What effect did the internal combustion engine have on the Industrial Revolution?
Nothing at all the industrial revolution happened 40 years before the advent of the internal combustion engine and it happened a good hundred years before in england.
