Fuel is ignited in a diesel engine cylinder by ()
A、a spark plug
B、injectors
C、the heat of compression
D、increasing jacket water temperatures
A、a spark plug
B、injectors
C、the heat of compression
D、increasing jacket water temperatures
A、excessively late fuel injection B、oil in the air charge C、water in the fuel D、injection continuing after the fuel charge is ignited
A、the heat compressed fuel/air mixture in the cylinder B、the fuel igniter C、the fuel injector D、the fuel pump
A、electronic ignition system B、compression of air by the piston C、friction in the fuel injector D、fuel oil bearing system
A、no spark or flame is required to ignite gas or vapor B、a fuel begins to give off explosive vapors C、a fuel if ignited will continue to burn D、a 1% mixture of the fuel with air will explode
A、A.fuel oil supply temperature is normal B、B.burner electrode is incorrectly positioned C、C.fuel/air ratio is incorrect D、D.ignition current is too low
A、can not be ignited by a spark unless the vapor is in a confined space B、are nontoxic in all concentrations C、can not be ignited by a spark unless they are at their auto-ignition temperature D、are heavier than air
A、ignition may be delayed B、fuel economy is not affected C、exhaust gas temperature will be unchanged D、the exhaust will be clear
A、fuel will not be properly atomized in the cylinder B、ignition will be delayed due to low ignition temperature C、maximum fuel expansion will occur on the compression stroke D、fuel will ignite before top dead center