A sudden drop in diesel engine cylinder compression pressure can be caused by()
A . a leaking fuel injector nozzle
B . a clogged air filter
C . excessively early fuel injection
D . malfunctioning valve
相似题目
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A turbocharged, four-stroke/cycle diesel engine has a larger valve overlap than a naturally aspirated four-stroke/cycle diesel engine, in order to in crease the ().
A . temperature of the exhaust gases
B . energy supplied to the turbocharger
C . air pressure to the intake manifold
D . purge of exhausted gases from the cylinder
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A supercharged diesel engine when compared to a similar naturally aspirated diesel engine, will develop an increase in ()
A . ignition lag
B . engine horsepower
C . lube oil system pressure
D . specific fuel consumptio
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Worn main bearings in a diesel engine can result in ()
A . decreased compression pressure
B . increased lube oil pressure
C . lower lube oil temperature
D . excessive leakage past the piston ring
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A diesel engine is supercharged in order to()
A . lower the no-load RPMs
B . provide more air for combine with the fuel
C . increase the no-load RPMs
D . provide more fuel combine with the air
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A drop in compression pressure in one cylinder of a diesel engine can be caused by()
A . a leaking fuel injection nozzle
B . a clogged air filter
C . early fuel injection
D . burned valve
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Sudden unloading of a diesel engine can cause().
A . decreased fuel efficiency
B . increased exhaust temperature
C . black smoke
D . overspeed tri
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If a heavy sea strikes the rudder, the shock is transmitted through () to the rams, this cause a sudden increase in oil pressure in one of the cylinders.
A . the control rod
B . the hunting gear
C . the floating ring
D . the tiller arm
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A sudden drop in compression pressure in one cylinder of a diesel engine can be caused by()
A . a leaking fuel injector nozzle
B . a clogged air filter
C . excessively early fuel injection
D . malfunctioning valve
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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 increase
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A four-stroke cycle, turbocharged, 1000 horsepower diesel engine has been operating under loadThe load suddenly increases, causing excessive black exhaust smoke, and a rapid rise in the lube oil temperatureIn response to this condition, you should:()
A . reduce load
B . check your exhaust
C . adjust cooling water temperature
D . increase lube oil flow
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Charging-air pressure increases if there is incorrect combustion and drop in the () of the diesel engine.
A . machine efficiency
B . machinery efficiency
C . mechanical efficiency
D . mechanics efficiency
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If over a period of weeks the air-box pressure of a turbo-charged, diesel engine, operating at full load, appears to be dropping off, the cause can be ().
A . open air-box drains
B . loss of cooling water to the diffuser
C . gradual fouling of the air filters
D . improperly timed exhaust valve
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A sudden decrease in the diesel engine lube oil viscosity could be an indication of()
A . loss of additives from the lube oil
B . carbon deposits in the lube oil
C . excessive centrifuging
D . excessive fuel dilutio
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In a simple series circuit, the entire source voltage will drop across ()
A、the resistor next to the negative terminal
B、a short circuit
C、the resistor next to the positive terminal
D、an open circuit
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A pressure drop in the liquid line of a refrigeration system may cause()
A . the solenoid valve to seize
B . the compressor to hunt
C . flash gas to form in the liquid line
D . the expansion valve to freeze ope
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In a diesel engine, blow-by()
A . increase exhaust back pressure
B . causes excessive crankcase pressure
C . can only be detected by a compression check
D . decreases fuel consumptio
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A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal the probable()
A . engine overload
B . leaky valves
C . stuck or broken piston rings
D . low air injection pressure
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A sudden break in the cloud allowed rescuers to _ Michael Benson.
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The idiom “drop in a bucket” means __________ .
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What does the hunter in “A Worn Path” drop?
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I was writing a letter, suddenly a man came in.
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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
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In a sudden ______ of anger,the man tore up ?
<span style="color:464646">In a sudden ______ of anger<span style="font-size:13px;color:464646">,</span></span><span style="font-size:13px;color:464646">the man tore up everything within reach.</span>
<span style="font-size:13px;color:464646">A) attack</span><span style="font-size:13px;color:464646">B) burst</span><span style="font-size:13px;color:464646">C) split</span><span style="font-size:13px;color:464646">D)</span>
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A drop in the China real interest rate reduces China net capital outflow.