Which of the following best describes the working principle of a 2-stroke diesel engine?
The engine completes one power cycle in two strokes with one crankshaft revolution
A stroke is one full movement of the piston from one end of the cylinder to the other, and a complete working cycle must cover intake, compression, power, and exhaust events.
The question asks how a 2-stroke diesel engine packs those events into its cycle.
In a 2-stroke engine the events are combined so that the whole cycle is completed in just two strokes of the piston, one up and one down.
Two strokes correspond to a single revolution of the crankshaft, so a power stroke is produced on every revolution.
Because there is no spare stroke, fresh air enters and burnt gases leave through ports in the cylinder wall during the scavenging period, not through a separate dedicated exhaust stroke.
The option describing four strokes and two crankshaft revolutions belongs to a four-stroke engine, and the option about air and fuel being mixed in a carburettor describes a petrol engine, since a diesel injects fuel directly into compressed air.
Hence, the answer is The engine completes one power cycle in two strokes with one crankshaft revolution.
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?
What is a key difference between 2-stroke and 4-stroke diesel engines?
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?
