单项选择题
If an auxiliary diesel engine temperature is higher than normal ,but the thermostat is determined not to be defective you would suspect a /an （）
A.cavitation erosion in the water jackets
B.excess corrosion inhibitor in the coolant
C.dirty jacket water cooler
D.defective turbocharger
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相关考题
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单项选择题
Which of the following beneficial results can be expected from supercharging a previously naturally aspirated engine?（）
A.Increased turbulence
B.increased mechanical efficiency
C.Increased brake mean effective pressure
D.All of the above -
单项选择题
Late fuel injection in a diesel engine is indicated by low firing pressure with（）
A.high exhaust temperature
B.low exhaust temperature
C.fuel knock in each cylinder
D.mechanical knock in each cylinder -
单项选择题
In a diesel engine jacket water cooler, with seawater cooling the fresh water, the（）
A.sea water temperature must never be warmer than 40℃
B.jacket water pressure should always be greater than the sea water pressure
C.jacket water temperature must always be less than 60℃
D.jacket water pressure must always be less than the sea water pressure
