Answer Posted / manjunath

1.in 4stroke the cycle in completed in 4strokes of the
piston..or in 2rev of crank shaft...
a.in 2stroke the cycle is completed in 2strokes of the
piston..or in 1rev of crank shaft...
2.in 4stroke spark ignition..
b.in 2stroke compression ignition...
3.power produced for same size of engine is small...
c.----"---------"----------"------------ is more....
4.4stroke contains valve mechanisms....
d.2stroke---"----- ports ----"-----...
5.lesser wear and tear in 4stroke.......
e.greater -------"----- in 2stroke.....
6. thermal effi is 25%........
f. --------"------ 30-36%.....
7.4stroke works on ooto cycle....
g.2stroke works on diesel cycle......

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