What is a key difference between 2-stroke and 4-stroke diesel engines?
Power stroke occurs in every revolution of a 2-stroke engine
The distinguishing principle between the two engine types is how many crankshaft revolutions are needed to complete one working cycle.
In a 2-stroke engine the whole cycle of intake, compression, power and exhaust is completed in just two piston strokes, which is one revolution of the crankshaft.
Because the cycle finishes in a single revolution, a power stroke is produced on every revolution of the crankshaft.
In a 4-stroke engine the four strokes span two crankshaft revolutions, so a power stroke occurs only once every two revolutions, which is the real contrast between them.
The claim that a 2-stroke engine has no cooling system is false, because both types must dissipate combustion heat and are cooled.
Lubrication viscosity and the fuel used are not the defining difference here, since both engines run on diesel and both need proper lubrication, so those options do not capture the key point.
Hence, the answer is Power stroke occurs in every revolution of a 2-stroke engine.
Similar Questions
Why are compression ignition engines NOT preferred for high-speed applications?
Compression ignition engines are known for their ability to operate efficiently at which type of compression ratio?
What causes ignition in a compression ignition engine?
Which of the following best describes the working principle of a 2-stroke diesel engine?
How do the compression ratios of conventional petrol engines generally compare with diesel engines?
What does the valve timing diagram illustrate in a diesel engine?
Important Questions from Diesel Engine Principle
A petrol engine typically has a compression ratio ranging from ______.
Following are the advantages of diesel power engines, except
Why are compression ignition engines NOT preferred for high-speed applications?
Compression ignition engines are known for their ability to operate efficiently at which type of compression ratio?
What causes ignition in a compression ignition engine?
