发明名称 |
Device for regulating the delivery pressure of a pump, for example, for feeding fuel to an internal combustion engine |
摘要 |
The device includes a solenoid valve having a supply conduit communicating with the delivery of the pump, a drain conduit, an electromagnet energizable to control an armature controlling a shutter, and reducing means for reducing disturbance in the delivery pressure of the pump when the electromagnet is energized. The reducing means include a chamber having a predetermined volume and located between the supply conduit and the drain conduit; and a fixed shield having an opening in which slides a small-diameter portion of the stem of the armature. The electromagnet is controlled by an electronic unit via a modulator for modulating the duty cycle of the control pulses, and via a circuit for selecting the frequency of the control pulses on the basis of an estimate of hydraulic disturbances depending on at least one operating parameter.
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申请公布号 |
US6408824(B1) |
申请公布日期 |
2002.06.25 |
申请号 |
US20000607244 |
申请日期 |
2000.06.30 |
申请人 |
ROBERT BOSCH GMBH |
发明人 |
PACUCCI NICOLA;DE MATTHAEIS SISTO LUIGI |
分类号 |
F02M37/00;F02M51/00;F02M51/04;F02M55/02;F02M59/36;F02M59/46;F02M63/00;F02M63/02;F04B49/24;F16K31/06;(IPC1-7):F02M37/04 |
主分类号 |
F02M37/00 |
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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