Mechanical Engineering - Automobile Engineering - Discussion
Discussion Forum : Automobile Engineering - Section 1 (Q.No. 40)
40.
The compression ratio in petrol engine is kept less than in Diesel engine because
Discussion:
6 comments Page 1 of 1.
Vikas said:
1 decade ago
Petrol is highly flammable and high compression gets heated the charge which tends to ignite before the spark ignition by hot spots in chamber.
Raviteja said:
1 decade ago
Petrol is highly inflammable, due to high ignition, more fuel is exhausted and comprssion ratio increases, engine results to damage due to high ignition.
Lipan ku sahoo said:
1 decade ago
Because petrol is low ignition temperature than diesel.
AMAL said:
10 years ago
The exact reason is because it leads to detonation which is due to pre-ignition. And that's the reason why the bore size of petrol engine does not exceeds 150 mm because spark has to travel large distance which increases pre-ignition again.
So due to this it cannot be used in large vehicles due to small engine. So only due to detonation the further problems are created mentioned above.
I hope I cleared doubt of more than one question.
So due to this it cannot be used in large vehicles due to small engine. So only due to detonation the further problems are created mentioned above.
I hope I cleared doubt of more than one question.
Dharmendera said:
9 years ago
Petrol has high ignition temperature that is why we use a spark plug to ignite the fuel mixture so how Pre-ignition is possible.
Omprakash yadav said:
9 years ago
Petrol is highly volatile fuel, due to this, it pre- ignited and causes the performance engine.
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