发明名称 |
Method and system for engine air-charge estimation |
摘要 |
The air flow into an engine is estimated via a speed-density calculation wherein the volumetric efficiency is estimated on-line. There are three interconnected observers in the estimation scheme. The first observer estimates the flow through the throttle based on the signal from a mass air flow sensor (MAF). The second observer estimates the intake manifold pressure using the ideal gas law and the signal from a intake manifold absolute pressure sensor (MAP). The third observer estimates the volumetric efficiency and provides an estimate of the air flow into the engine.
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申请公布号 |
US6636796(B2) |
申请公布日期 |
2003.10.21 |
申请号 |
US20010769800 |
申请日期 |
2001.01.25 |
申请人 |
FORD GLOBAL TECHNOLOGIES, INC. |
发明人 |
KOLMANOVSKY ILYA V;STOTSKY ALEXANDER ANATOLJEVICH |
分类号 |
F02D41/14;F02D41/18;(IPC1-7):F02D41/18 |
主分类号 |
F02D41/14 |
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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