结果，由节气门(11)控制的混合物包含一部分空气，一部分汽化燃料。
As a result, the mixture controlled by the throttle valve (11) contains partly air and partly vaporised fuel.
当活塞到达进气行程的下止点时，随着空气燃油的混合气进入气缸，进气门关闭。
When the piston reaches the bottom of the intake stroke, the intake valve closes, trapping the air-fuel mixture in the cylinder.
当活塞下移时，汽化的燃料和空气的混合物通过进气门进入气缸。
As the piston moves down, the vaporized mixture of fuel and air enters the cylinder through open intake valve.
气门关闭，活塞在气缸内上移，压缩空气燃烧混合物。
The intake valve closes and the piston moves up in the cylinder, compressing the fuel mixture.
气门关闭，活塞在气缸内上移，压缩空气燃烧混合物。
The intake valve closes and the piston moves up in the cylinder, compressing the fuel mixture.
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