更多"Late fuel injection timing is indic"的相关试题:
[单项选择]Early fuel injection timing is indicated by the cylinder pressure being（）
A. above normal with a below normal exhaust temperature
B. above normal with a normal exhaust temperature
C. below normal with a normal exhaust temperature
D. below normal with an above normal exhaust temperature
[单项选择]With VIT unit the timing of fuel injection of an engine can be regulated automatically according to the （）.
A. ship draft
B. pitch
C. engine load
D. oil viscosity
[单项选择]With （） unit the timing of fuel injection of an engine can be regulated automatically.
A. MBT
B. MEG
C. VSG
D. VIT
[单项选择]Late fuel injection in a diesel engine is indicated by low firing pressure with（）
A. high exhaust temperature
B. low exhaust temperature
C. fuel knock in each cylinder
D. mechanical knock in each cylinder
[单项选择]In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with（）
A. low firing pressure
B. low exhaust temperature
C. mechanical knock in each cylinder
D. fuel knock in each cylinder
[单项选择]Late fuel injection occurring at, or after TDC in a diesel engine is indicated by excessive exhaust smoke and （）
A. low exhaust temperature
B. low firing pressure
C. fuel knock in each cylinder
D. mechanical knock in each cylinder
[单项选择]Late fuel oil injection in a diesel engine can result in （）
A. fuel knock
B. increased power
C. low compression pressure
D. high exhaust temperature
[单项选择]Early injection timing is indicated by （）.
A. high exhaust temperature and low firing pressure
B. high exhaust temperature and high firing pressure
C. low exhaust temperature and low firing pressure
D. low exhaust temperature and high firing pressure
[单项选择]If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will（）
A. backfire through the air intakes
B. develop less power under load
C. have high firing pressures
D. lift its cylinder relief valves
[单项选择]Fuel injection systems meter fuel, atomize fuel, and （）.
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
[单项选择]During the fuel injection period, fuel pressure must exceed cylinder gas pressure to （）.
A. ensure penetration and distribution of the fuel in the combustion chamber
B. ensure the needle valve is flushed clean during each injection
C. prevent combustion gas blowback into the open needle valve
D. prevent reflected pressure waves when the needle valve closes
[单项选择]With Variable Injection Timing the start of injection may be （）as the engine load is reduced.
A. advanced
B. retarded
C. kept constant
D. none of the above
[单项选择]Air in the fuel lines to the fuel injection nozzles of a diesel will result in （）.
A. lower compression pressures
B. overheating without smoking
C. failure to start
D. a run away without load
[单项选择]Faulty operation of diesel engine fuel injection nozzles can be directly caused by （）.
A. water in the fuel oil supply
B. excessive fuel nozzle holder cooling
C. a distorted fuel spray pattern
D. leakage past the plunger into the oil drain
[单项选择]The main source of fuel injection system malfunctions is （）
A. improper adjustments
B. contaminated fuel
C. coated fuel lines
D. excessive vibration
