发明授权
US06904897B1 Bearing porosity control in an exhaust gas recirculation valve 失效
在排气再循环阀中进行轴承孔隙率控制

Bearing porosity control in an exhaust gas recirculation valve
摘要:
A powdered metal bearing (40) that guides a pintle (42) in an EGR valve (20) is sealed against infiltration of exhaust gases by mechanical processing or by applying a sealant.
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