发明名称 |
METHOD OF REDUCTION OF COLD-START EMISSIONS FROM INTERNAL COMBUSTION ENGINES |
摘要 |
A method of reducing noxious or toxic exhaust emissions from an internal combustion engine (10) having a plurality of cylinders (12) cooperating with a crankshaft (13) to cause the crankshaft to rotate at a rotational speed when the cylinders (12) are provided with an air/fuel mixture having a lambda value and the mixture is ignited to generate pressure in the cylinders. The method comprises the steps of: measuring a parameter reflecting the pressure in a first cylinder during at least a part of a working stroke of the first cylinder when supplied with an air/fuel mixture having a first lambda value to thereby obtain a first parametric value; providing an air/fuel mixture to a second cylinder, which air/fuel mixture has a second lambda value which is different to the first lambda value, to cause the second cylinder to perform a working stroke; measuring a parameter reflecting the pressure in the second cylinder during at least a part of the working stroke of the second cylinder to obtain a second parametric value; comparing the parametric values to obtain a parametric comparison value, and adjusting the lambda value for the air/fuel mixture to a subsequent cylinder dependent on the parametric comparison value.
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申请公布号 |
WO0009877(A1) |
申请公布日期 |
2000.02.24 |
申请号 |
WO1999SE01355 |
申请日期 |
1999.08.09 |
申请人 |
AB VOLVO;ALMKVIST, GOERAN |
发明人 |
ALMKVIST, GOERAN |
分类号 |
F02D41/00;F02D41/06;F02D41/14;F02D41/34;(IPC1-7):F02D41/06 |
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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