Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ()
A、prolong the ignition delay period
B、ensure the beginning of fuel injection
C、thoroughly utilize the air charge
D、allow controlled fuel combustion
A、prolong the ignition delay period
B、ensure the beginning of fuel injection
C、thoroughly utilize the air charge
D、allow controlled fuel combustion
A、a shortened ignition delay period B、a lean fuel/air mixture C、excess fuel in the combustion chamber D、rapid vaporization of injected fuel droplets
A、A.a shortened ignition delay period B、B.a lean fuel/air mixture C、C.excess fuel in the combustion chamber D、D.rapid vaporization of injected fuel droplets
A、fuel droplets will burn as they leave the fuel injector B、fuel will not be properly atomized in the cylinder C、maximum expansion of the burned fuel cannot take place in the cylinder D、compression pressure will be too low to cause fuel ignition
A、late fuel injection B、early fuel injection C、high exhaust temperature from that cylinder D、decreased effective stroke from that injector
A、create turbulence in the combustion chamber B、aid in completing cylinder scavenging C、inject fuel at the proper time D、minimize fuel penetration into the cylinder
A、quantity of fuel injected is decreased B、quantity of fuel injected will always be increased C、start of injection is advanced D、duration of injection will always be greater
A、A.assist in a quick cutoff of fuel injection B、B.allow oil backflow from the injector to the helix C、C.reduce fuel oil pressure between injection strokes D、D.meter the quantity of fuel delivered
A、deliver proper fuel quantity to the injection nozzle B、provide rapid fuel injection cutoff C、control fuel quantity entering the pump body D、control fuel pressure delivered to the combustion chamber