发明名称 |
FUEL PUMP APPARATUS |
摘要 |
<p>A fuel pump apparatus (20) for maintaining fuel flow when the surface of the fuel in a fuel tank (l0) is below a minimum level. The fuel pump apparatus includes a reservoir (54) in the fuel tank and a pump (60) in the reservoir. A motor in the pump drives a first pump (78) which draws fuel from a secondary chamber (l29) of the pump and discharges it to the engine. The motor also drives a second pump (76) which draws fuel from the tank through a primary chamber (l36) and discharges it to the secondary chamber. The excess of fuel discharged by the second pump over the first pump is discharged through a flow orifice (l32) in the pump to the reservoir. At fuel levels below the minimum, a float (l48) controlled solenoid (l56) closes an inlet port (l42) to the primary chamber causing fuel to back-flow through the flow orifice to the secondary chamber to supply the first pump.</p> |
申请公布号 |
EP0246755(B1) |
申请公布日期 |
1990.07.18 |
申请号 |
EP19870303496 |
申请日期 |
1987.04.22 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
FALES, IVAN DOUGLAS;ROTH, ROBERT ALBERT |
分类号 |
F04C11/00;F02M37/00;F02M37/04;F02M37/08;F02M37/10;F02M37/18;F04C14/00;F04C14/24;F04C15/06 |
主分类号 |
F04C11/00 |
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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