Heat for igniting the fuel oil in the cylinder of a diesel engine is generated by the ()
A、electronic ignition system
B、compression of air by the piston
C、friction in the fuel injector
D、fuel oil bearing system
A、electronic ignition system
B、compression of air by the piston
C、friction in the fuel injector
D、fuel oil bearing system
A、produce the heat for ignition B、decrease injection lag C、increase ignition delay D、aid in exhausting burnt gases
A、keep piston crown temperatures elevated for smoother combustion B、reduce the possibility of overheating the top compression ring C、help retain the heat of compression to prevent ignition delay D、help retain the heat of compression to prevent combustion knock
A、the heat compressed fuel/air mixture in the cylinder B、the fuel igniter C、the fuel injector D、the fuel pump
A、(1) only is correct B、(2) only is correct C、both (1) and (2) are correct D、neither (1) or (2) are correct
A、prevent heat corrosion to internal components B、increase fuel delivery rate and economy C、prevent pre-ignition D、avoid carbonization of the nozzle tips
A、spark from a plug in the pre-combustion chamber B、electrical discharge from the distributor C、heat of compression within the cylinder D、heat from the fuel injection nozzle
A、heat convection through the adjacent bulkheads B、combustion gases carried through the ventilation system C、direct convection of the heat emitted by the adjacent fire D、heat radiated from the dock or bulkhead by the adjacent fire