A、A.reduce heat radiation to the engine room
B、B.aid in preventing turbocharger overheating
C、C.condense and drain moisture from exhaust gases
D、D.dampen exhaust gas pulsations in the manifold
更多“A water jacket is placed around the exhaust manifolds of propulsion diesel engines to（）”相关的问题
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
A、cavitation erosion in the water jackets B、excess corrosion inhibitor in the coolant C、dirty jacket water cooler D、defective turbocharger
A、High lube oil pressure B、High jacket water pressure C、High jacket water temperature D、Low jacket water pressure
A、An alarm device with audible and visible signals is required for all cooling water systems B、Propulsion engines with bores over 200 mm are to be fitted with cooling water jackets C、Each totally enclosed cooling system shall be provided with a suitable head tank D、Drain cocks are to be provided at the lowest points of all cylinder water jackets
A、A.Faulty thermostatic bypass valve B、B.Eroded zinc pencils in the heat exchanger C、C.Steam formation in the expansion tank D、D.Excessive leakage from jacket water pump seal
A、overloading in all cylinders B、a jammed three-way thermostatic valve C、chromate PH too low D、a high level in the surge tank
A、A.soft water pump was not secured along with the engine B、B.jacket water thermostat has failed C、C.cylinder liner may be cracked D、D.raw water pump is over-speeding just prior to engine shutdown
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