Device for supplying electric current to the fuel pump of a motor vehicle internal combustion engine

一种燃油泵、内燃机的技术，应用在电路装置、负载供给电路、电池电路装置等方向，能够解决成本高、高复杂度等问题，达到避免不必要的工作、冷却能力小、小结构复杂度的效果

Inactive Publication Date: 2007-06-27
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This requires a high structural complexity and is therefore very costly

Method used

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  • Device for supplying electric current to the fuel pump of a motor vehicle internal combustion engine

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Embodiment Construction

[0020] 1 and 2 show a device 1 for supplying current to a fuel pump 2 of an internal combustion engine 3 of a motor vehicle. The device 1 has a first connection 4 connected to a DC power supply and a second connection 5 connected to a consumption regulation device 6 (or fuel quantity regulation device) of the fuel pump 2 . This consumption regulating device 6 is optional and can be omitted in an alternative embodiment. The consumption regulating device 6 connects the second connection 5 of the device 1 to the fuel pump 2 when the internal combustion engine 3 is started and while the internal combustion engine 3 is running. The first connection 4 of the device 1 is connected to a DC power supply 7 designed as a motor vehicle battery. The critical voltage of the DC power supply 7 is monitored by a monitoring device 8 . The monitoring device 8 has a voltage detector 9 connected to the first connection 4 and a monitoring circuit 10 , and is connected to a relay 11 . Furthermore...

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Abstract

A device (1) for supplying electric current to the fuel pump (2) of a motor vehicle internal combustion engine (3) comprises a DC / DC converter (13) which increases voltage to a predetermined value in the event of a voltage drop of a direct current source (7). This ensures an adequate voltage supply of the fuel pump (2) even at low voltages of the direct voltage source. When the voltage (15) of the direct voltage source (7) is sufficient, the DC / DC converter (13) is bridged, so that the fuel pump (2) is directly supplied with fuel from the direct voltage source (7). The DC / DC converter is also bridged when the device is faulty.

Description

technical field [0001] The invention relates to a device for supplying electric current to a fuel pump of an internal combustion engine of a motor vehicle, the device having a first connection connected to a direct current (voltage) source and a second connection connected to the fuel pump. Background technique [0002] This device connects the fuel pump to the DC power supply when the internal combustion engine is started. In today's motor vehicles, the direct current source is a battery, which is charged while the internal combustion engine is running. The fuel pump is designed for a DC supply voltage of, for example, 12 V and supplies the internal combustion engine with fuel. After starting, the fuel pump is supplied with a substantially constant voltage, usually via a generator driven by the internal combustion engine. However, the DC power supply voltage depends on temperature, its lifetime, maintenance status, and other factors. Especially at low temperatures, the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R16/02H02J7/00
CPCB60R16/03H02J7/0065H02J2207/20H02J7/0063H02J2310/46H02J7/007182B60R16/033G01R31/40G01R19/0084B60R16/005
Inventor 贝恩德·伦普夫
Owner CONTINENTAL AUTOMOTIVE GMBH
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