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【单选题】

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 cylinders

更多“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 ().”相关的问题
第1题

Aa single, long-stroke, slow-speed, turbocharged, two-stroke diesel engine  B、a single, long-stroke, medium-speed, turbocharged, four-stroke diesel engine  C、two medium-speed, turbocharged, four-stroke diesel engines  D、a variable-speed AC generator  

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第2题

A、effective cylinder scavenging and cooling  B、constant pressure from the turbochargers  C、cooler operation of the exhaust system  D、effective constant pressure for turbocharger operation  

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第3题

AA.inoperative turbocharger  B、B.inadequate fuel supply  C、C.overload on one cylinder  D、D.unequal load distribution  

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第4题

A、most critical in a four-stroke cycle diesel engine  B、most critical in a two-stroke/cycle diesel engine  C、most critical in a four-stroke/cycle diesel engine if it is turbocharged  D、of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine  

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第5题

A、improving cylinder scavenging  B、preheating the combustion chamber  C、reducing air charge density  D、preventing valve wear  

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第6题

A、engine speed  B、kilowatt load  C、fuel injection pressure  D、air intake manifold temperature  

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第7题

A、during the valve overlap period  B、with only the exhaust valve open  C、at a pressure below atmospheric  D、without cooling the cylinders or pistons  

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第8题

A、during the valve overlap period  B、with only the exhaust valve open  C、at a pressure below atmospheric  D、without cooling the cylinders or pistons  

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第9题

A、Blank off the exhaust gas inlet to the damaged turbocharger  B、Secure cooling and lubrication to the damaged turbocharger  C、Lock the rotor of the damaged turbocharger  D、All of the above  

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