Why is the volumetric efficiency of a two-stroke engine lower than that of a four stroke engine?
In the two-cycle engine, the power losses required to drive the gear-driven blower reduce the net engine power output. In addition, the two-stroke engine requires a much larger air flow capacity to operate than does the equivalent displacement four-cycle engine.
Why volumetric efficiency of petrol engine is less than diesel engine?
His specific power, for a fixed geometric displacement, is lesser than of a petrol engine only because it moves (usually) less working fluid (including fuel). The mixing ratio in a diesel engine is always lean. Thus, there is excess air which will not be burned, but requires volume in the cylinder.
What is the difference between 2 stroke and 4 stroke engine?
In a 2-stroke engine, all five functions of the cycle are completed in only two strokes of the piston (or one revolution of the crankshaft). In a 4-stroke engine, the five functions require four strokes of the piston (or two revolutions of the crankshaft).
Which engine is best 2-stroke or 4-stroke?
Because combustion takes place with each revolution of the crankshaft with a 2-stroke, this format puts out more power than a 4-stroke engine and the power has more instantaneous delivery. This are some reasons why 2-stroke engines have a long history of use on many different types of motorcycles.
Is 4-stroke or 2-stroke better?
The two stroke diesel engine is widely used as the the four stroke as it has more output power. however, the two stroke engine has high losses whether heat lose or unburnt gases. So, in comparison with four stroke which engine has the best performance.
Which engine is best 2-stroke or 4 stroke?
Which engine has more thermal efficiency 2-stroke or 4 stroke?
Relatively 2 stroke engine of same physical size with 4 stroke engine, produces higher amount of power than that by 4 stroke engine. But in term of thermal efficiency, 2 stroke engine are considered less thermal efficient than 4 stroke engine.
Which engine has more power 2 stroke or 4 stroke?
What’s the difference between 2-stroke and 4-stroke engines? Fuel for a 2-stroke engine has a small amount of oil mixed into it. Because combustion takes place with each revolution of the crankshaft with a 2-stroke, this format puts out more power than a 4-stroke engine and the power has more instantaneous delivery.
How do you increase volumetric efficiency?
Volumetric efficiency can be improved in a number of ways, most effectively this can be achieved by compressing the induction charge (forced induction) or by aggressive cam phasing in naturally aspirated engines as seen in racing applications. In the case of forced induction volumetric efficiency can exceed 100%.