Device for supplying electrical power to a fuel pump of a...

Details Device for supplying electrical power to a fuel pump of a... Device for supplying electrical power to a fuel pump of a...

2005-07-26

2010-11-09

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Electrical conditions in circuit other than controlled motor...

C363S059000, C363S074000, C123S497000

Reexamination Certificate

active

07830108

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.

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