单项选择题

Which of the combustion parameters listed is used in a diesel engine, but NOT related to the injection system?（）

A.Atomization
B.Metering
C.Effective stroke
D.Penetration

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单项选择题

Successful combustion inside the cylinders of a diesel engine is dependent upon （）.

A.fine atomization
B.high temperature
C.good mixing of fuel and air
D.all of the above

单项选择题

What occurs in the combustion space of a diesel engine cylinder shortly after ignition and before the piston reaches TDC?（）

A.Rapid increase in temperature with constant pressure
B.Rapid increase in pressure with constant temperature
C.Rapid increase in pressure and temperature
D.Rapid increase in volume and decrease in pressure

单项选择题

The power output of a turbocharged diesel engine will drop if the cooling water flow through the after-cooler is interrupted because the （）.

A.turbocharger stalls
B.exhaust pressure increases
C.air charge density decreases
D.scavenge effect increases