Increased air () will raise scavenge efficiency and allow a greater mass of air to be compressed; more fuel may now be burned giving an increased power.
A、specific volume
B、density
C、viscosity
D、calorific value
A、specific volume
B、density
C、viscosity
D、calorific value
A、lag behind the increased fuel supplied to the engine B、enter the engine along with the increase in the fuel C、enter the engine before the increased fuel supply D、leave the turbocharger as a negative pulse
A、pronounced local heating B、wind being pushed up a mountain C、a warm air mass rising over a cold air mass D、an increased lapse rate caused by advection of warm surface air
A、An increased air temperature differential between the cooler inlet and outlet B、A decrease in the air pressure differential across the cooler C、Excessive condensate forming in the air box D、A decrease in the air temperature differential between the cooler inlet and outlet
A、A.increased air pressure differenced before and aft air cooler B、B.reduced exhaust temperature in all cylinders C、C.reduced temperature difference between water inlet and outlet D、D.both A and C
A、use of low viscosity oil in cold weather B、increased moisture content of inlet air in cold weather C、increased drag of pistons and bearings due to increased oil viscosity D、higher compression pressures reached due to smaller clearances existing in the engine during cold weather