A . exhaust gas temperature system
B . exhaust load system
C . constant or pulse pressure system
D . constant volume system
[单选题]The two-stroke cycle begins with the piston coming up from the bottom of its stroke, with scavenge ports in the sides of the cylinder being ().A . shutB . closingC . openedD . closed
[单选题]For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because ().A . it has a longer power strokeB . more air gets into the cylinder each strokeC . it develops twice as many power s
[单选题]A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the ()(1) MEP is lower and the scavenging air is cooling the exhaust gases(2) valve overlap in a four-strokeA . (1) only is
[单选题]In a large, slow-speed, main propulsion diesel engine, which of the parts listed is under tension when the engine is running?()A . Bed plateB . ColumnC . EntablatureD . Tie rod
[单选题]A large, low-speed, main propulsion diesel engine uses sea water to directly cool the ().A . cylinder headsB . exhaust valvesC . scavenging airD . injector
[单选题]The working cycle of a four-stroke diesel engine consists of four events:()(1) compression(2) expansion(3) exhaust(4) suctionThe correct sequence isA . (4)-(2)-(3)-(1)B . (4)-(3)-(1)-(2)C . (4)-(3)-(2)-(1)D . (4)-(1)-(2)-(3)
[单选题]Scavenging in a four-stroke/cycle diesel engine occurs during the ().A . last part of the exhaust stroke, and the first part of the intake strokeB . last part of the intake stroke onlyC . early part of the injection stroke onlyD . early part of the p
[单选题]If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the ().A . cylinder compression pressure may not be high enoughB . cylinder compression temperature may be too highC . fuel oil injec
[单选题]The camshaft on a four-stroke/cycle diesel engine provides a means to operate the ().A . fuel injectorsB . exhaust valvesC . intake valvesD . all of the above
[单选题]If a four-stroke/cycle diesel engine is running at 1550 RPM, the speed of the camshaft will be().A . 525 RPMB . 775 RPMC . 1550 RPMD . 1800 RPM