The piston moves up and down in the piston chamber primarily in response to changes in intake manifold vacuum.
活塞主要因进气歧管真空度的变化而在活塞腔内上下移动。
Engine fittings series:Gear chamber, Cavaera cover, Sprocket rooms cover, Preheaterbase, Water pump Cover, Intake manifold, Pump box.
发动机配件类：齿轮室、气门室罩盖、 链轮室罩盖、预热器座、水泵泵盖、进气歧管、泵箱；
The effects of intake chamber volume, diameter and length of inlet duct and inlet manifold on volumetric efficiency were analyzed.
分析了进气总管和进气支管的管长、管径以及进气腔容积对充气系数的影响规律。
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