发明名称 |
EXHAUST EMISSIONS CONTROL IN GASEOUS FUELLED ENGINES |
摘要 |
A fuel supply control for an internal combustion engine designed to run on gaseous fuel (LPG or CNG) utilizes a feddback loop from a lambda sensor in the exhaust gases to a moving coil (82) mounted on a diaphragm (34) of a diaphragm-actuated valve (24) controlling the flow of gaseous fuel to the engine. The coil (82) is similar to the speaker coil of an audio speaker, and moves concentrically of a fixed permanent ring magnet (86) to impart a variable bias on the diaphragm (34) in accordance with the oxygen content of the exhaust gas stream as sensed by the lambda sensor, to control the fuel or air-and-fuel supply to the engine in accordance with desired engine operating parameters. The control has a sufficiently rapid and positive response that it can maintain the free oxygen content in the exhaust gases at substantially 2 % for continuous operation of a catalytic exhaust purifier at or nearly at optimum efficiency. |
申请公布号 |
WO9116531(A1) |
申请公布日期 |
1991.10.31 |
申请号 |
WO1991GB00634 |
申请日期 |
1991.04.22 |
申请人 |
GREEN POWER INTERNATIONAL LIMITED |
发明人 |
BEDFORD, TIMOTHY, JAMES;KIRKLAND, JOHN, WILLIAM |
分类号 |
F02D11/08 |
主分类号 |
F02D11/08 |
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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