发明名称 |
Exhaust gas recirculation valve |
摘要 |
A system and method for controlling a multiple cylinder internal combustion engine include a mechanically operated exhaust gas recirculation valve having a spring-biased pintle with a surface area sized to generate a spring-opposing force to open a valve chamber entrance when an exhaust pressure differential exceeds a first threshold to allow exhaust gas to flow toward an intake and to close a valve chamber exit spaced from the chamber entrance to block exhaust gas flowing to the intake when the pressure differential exceeds a second threshold. The valve operates to limit or block external EGR flow at low load such as during starting and idle as well as at wide-open throttle while metering EGR flow for mid-to-high loads.
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申请公布号 |
US7762242(B2) |
申请公布日期 |
2010.07.27 |
申请号 |
US20080134275 |
申请日期 |
2008.06.06 |
申请人 |
FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
GATES FREEMAN CARTER;FARAHMAND SASSAN |
分类号 |
F02B47/08;F02B47/00 |
主分类号 |
F02B47/08 |
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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