[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 . shut

B . closing

C . opened

D . closed

参考答案与解析:

相关试题

Large, two-stroke/cycle, main propulsion

[单选题]Large, two-stroke/cycle, main propulsion, diesel engine cylinders can be successfully pressure charged during normal operation, by using the ().A . exhaust gas temperature systemB . exhaust load systemC . constant or pulse pressure systemD . constant

  • 查看答案
  • Exhaust gases are generally removed from the cylinders of a two-stroke/cycle diesel engine by

    Exhaust gases are generally removed from the cylinders of a two-stroke/cycle die

  • 查看答案
  • For a given size engine, the two-stroke/

    [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

  • 查看答案
  • A two-stroke diesel engine exhaust tempe

    [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

  • 查看答案
  • 3.1.2.2 船舶柴油机的工作原理和基本结构For a given size engine, the two-stroke/cycle diesel engine will deliver more

    3.1.2.2 船舶柴油机的工作原理和基本结构For a given size engine, the two-stroke/cycle diesel engi

  • 查看答案
  • The position of the sump tank of the two-stroke diesel engine is often in--------0

    The position of the sump tank of the two-stroke diesel engine is often in-------

  • 查看答案
  • A slow-speed two-stroke diesel is usually arranged to operate continuously onheavy fuel oil and has

    A slow-speed two-stroke diesel is usually arranged to operate continuously onhea

  • 查看答案
  • If fuel injection to a four-stroke/cycle

    [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

  • 查看答案
  • The camshaft on a four-stroke/cycle dies

    [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

  • 查看答案
  • If a four-stroke/cycle diesel engine is

    [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

  • 查看答案