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METHOD OF OPERATING AN ENGINE BRAKE
申请公布号：WO2007133336(A2)
申请号：WO2007US07189
申请日期：2007.03.23
申请公布日期：2007.11.22
发明人：HUANG, SHENGQIANG;YANG, ZHOU;SCHWOERER, JOHN
分类号：G06Q30/00
主分类号：G06Q30/00
摘要：Methods and apparatus for actuating an engine valve provided between an engine cylinder and an exhaust manifold to provide compression-release engine braking in combination with exhaust gas restriction and brake gas recirculation are disclosed. In a first embodiment of the present invention, the engine valve used to provide brake gas recirculation and compression-release braking may be maintained slightly open between the brake gas recirculation and compression-release events. In another embodiment of the present invention, the cam closing ramp for a main exhaust event may be extended to terminate near the beginning of a brake gas recirculation event to facilitate refilling a hydraulic valve actuation system used to in association with the exhaust valve.
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