发明名称 |
Control system and method for controlling engine exhaust back pressure |
摘要 |
A control system for an engine includes a restriction determination module and a valve control module. The restriction determination module determines a desired exhaust back pressure of the engine based on an exhaust flow rate of the engine. The valve control module selectively adjusts a valve position of an exhaust valve that restricts an exhaust flow of the engine based on the desired exhaust back pressure. The exhaust valve may include a valve body, a throttle plate, and an annular protrusion coupled to an inner surface of the valve body and protruding towards the throttle plate. The annular protrusion may abut a side of the throttle plate and may restrict fluid flow through an annular space between the throttle plate and the inner surface when the throttle plate is positioned in a rotational position transverse to a direction of fluid flow. A related method is also provided. |
申请公布号 |
US8364379(B2) |
申请公布日期 |
2013.01.29 |
申请号 |
US20100775989 |
申请日期 |
2010.05.07 |
申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS LLC;JOHNSON TIMOTHY J.;WONG KEVIN C.;FINKEL MARK D.;HUBBLE STEVEN M.;BENNETT ROGER;GUSHMAN RICHARD W.;BLOXSOM KIM;KSIAZKIEWICZ JOSHUA J. |
发明人 |
JOHNSON TIMOTHY J.;WONG KEVIN C.;FINKEL MARK D.;HUBBLE STEVEN M.;BENNETT ROGER;GUSHMAN RICHARD W.;BLOXSOM KIM;KSIAZKIEWICZ JOSHUA J. |
分类号 |
F02D9/06;F02D9/08 |
主分类号 |
F02D9/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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