A、control fuel injection time more precisely
B、control fuel injection rate more precisely
C、meet the environmental requirements
D、meet high engine speed requirements
更多“The main purpose of changing main engine to electronic controlled is not to（）”相关的问题
A、to reduce heat stress B、to reduce low temperature corrosion C、to improve firing and starting performance D、fuel saving
A、Serves as a backup for the main tow hawser in case of failure B、Provides weight and flexibility to the total tow makeup C、Lengthens the main tow hawser to keep the tow in step D、Distributes the towing load
A、provide energy to operate the engine between power impulses B、neutralize the primary inertia force of the crankshaft C、reduce the shock of starting loads on the main bearings D、prevent the engine from operating at critical speed
A、the main portion identifying the consignment B、a three-digit prefix identifying the carrier C、the main portion identifying the carrier D、the last check digit for accounting and security purposes
A、the clearance of the main bearing B、the diameter of main bearing C、the gap of main beating D、the tolerance of main bearing
A、the clearance of the main bearing B、the diameter of main bearing C、the hardness of main bearing D、the tolerance of main bearing
A、on line to the fire main B、kept available for use on the fire main at all times C、capable of being connected to the fire main D、rated at or above 125 psi
A、prevent main circuit overload B、protect the circuit breaker blowout coil C、prevent alternator motorization D、prevent low voltage tripout
A、seal the space between the piston and the liner B、reduce the amount of lube oil burned in the combustion chamber C、transmit heat from the piston to the cylinder liner D、damp out fluctuations of the piston side thrust
A、help preheat the air for the furnaces B、help preheat the feedwater C、protect economizer from excessive heat D、prevent excessive furnace heat losses
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