发明名称 |
Fuel control compensation for secondary air system flow variation |
摘要 |
An engine control system and method maintains an optimum exhaust fuel to air ratio in an internal combustion engine. A secondary air injection (SAI) pressure is measured in an SAI system. The SAI pressure measurement is converted into an SAI flow value. A fuel compensation value is obtained based on the SAI flow value. Fuel delivery is compensated to the engine based on the fuel compensation value. In a second embodiment, the fuel compensation value is obtained based on the SAI pressure measurement. Fuel delivery is compensated to the engine based on the fuel compensation value. In a third embodiment, a primary flow value is calculated at an air intake of the engine. A fuel compensation value is calculated based on the SAI flow and primary flow values. Fuel delivery to the engine is compensated based on the fuel compensation value.
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申请公布号 |
US7111454(B2) |
申请公布日期 |
2006.09.26 |
申请号 |
US20040918581 |
申请日期 |
2004.08.13 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
FULCHER STEPHEN K.;JESS RICHARD B.;RISSE PATRICK L.;SMITH STUART R.;ENG JAMES A. |
分类号 |
F01N3/00 |
主分类号 |
F01N3/00 |
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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