Answer Posted / deependra singh parihar
Because in these engines the working cycle is completed in
1 cycle of crank shaft. so the time of cooling for the
engine is less compared to 4 strke Engines. During at the
end of compression stroke the Tempreture inside the bore
goes to 1500 - 1700 degree c. at this high temprature the
working of valves gets disturb & valves get damage because
valves are made of iron alloys.to elamanate this ports are
used.
| Is This Answer Correct ? | 42 Yes | 5 No |
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