发明名称 |
CONTROL METHOD OF GAS ENGINE SYSTEM AND THAT SYSTEM |
摘要 |
<p>A method to control a gas engine system is disclosed, whereby the engine can be operated with an air-fuel-ratio controlled with high precision, even in using a low calorific fuel-gas that is prone to vary in calorific value; the engine system includes:
a first gas line toward each cylinder via a first gas valve from a gas supply source line, the first gas valve regulating flow rates of the fuel-gas through a gas compressor on the line;
a second gas line toward suction air, the line being branched from the gas supply source line and the line being provided with a gas air mixer and a second gas valve on the line. In the case when the fuel-gas is of a low calorific value or where the output of the engine is high, a part of the fuel-gas is supplied to the engine through the first and second lines. The mixer forms a mixture of a prescribed mixing ratio that is leaner than a lower limit of flammability of the fuel-gas, while the remaining fuel-gas through the first line is supplied to the mixture just before each cylinder so that a final prescribed air fuel ratio is formed. In the case when the calorific value of the fuel-gas is high, or of high engine output, the whole fuel-gas can be supplied only through the first gas line.</p> |
申请公布号 |
EP2143930(A1) |
申请公布日期 |
2010.01.13 |
申请号 |
EP20080862107 |
申请日期 |
2008.11.20 |
申请人 |
MITSUBISHI HEAVY INDUSTRIES, LTD. |
发明人 |
NISHIO, HIDEKI;SUZUKI, HAJIME;SHIMIZU, YUUICHI |
分类号 |
F02M21/02;F02B43/00;F02D19/02;F02D23/00;F02M21/04 |
主分类号 |
F02M21/02 |
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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