发明名称 |
METHOD FOR ESTIMATING THE LEVEL OF ETHANOL IN A FUEL |
摘要 |
The invention relates to a method for estimating the level of ethanol in a fuel injected into an internal combustion engine over a number (n) of cycles (n being an integer greater than or equal to 1). The method comprises the following steps: determination of the start of combustion of an injected fuel for each of the cycles; calculation of the average combustion start angle "?ave start" from the combustion start angles (?) recorded for all of the n cycles; determination of the end of combustion of an injected fuel for each of the cycles; calculation of the average combustion end angle "?ave end" from the combustion end angles (?) recorded for all of the n cycles; calculation of the combustion time between the combustion start time on the basis of "?ave start" and the combustion end time on the basis of "?ave end"; and deduction of the level of ethanol from the combustion time on the basis of a pre-determined model or a list of combustion times and associated ethanol levels. |
申请公布号 |
WO2008139113(A3) |
申请公布日期 |
2009.03.05 |
申请号 |
WO2008FR50621 |
申请日期 |
2008.04.08 |
申请人 |
RENAULT S.A.S.;EMERY, PASCAL;NAVARRO, MARCOS |
发明人 |
EMERY, PASCAL;NAVARRO, MARCOS |
分类号 |
F02D41/00;F02D19/08;G01L23/30;G01M15/08 |
主分类号 |
F02D41/00 |
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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