Fuel supply device for internal combustion engine

Details Fuel supply device for internal combustion engine Fuel supply device for internal combustion engine

2011-07-19

2011-07-19

Huynh, Hai H (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S456000, C123S457000

Reexamination Certificate

active

07980225

ABSTRACT:
A device includes two fuel injection systems and a pulsation damper. Each system includes fuel injection valves and first and second delivery pipes. While fuel is pumped to the two fuel injection systems with a common fuel pump, the device intermittently drives the fuel injection valves to open, thereby supplying the fuel within the delivery pipes from the fuel injection valves. The paths through which the fuel passes include a first passageway, which has the first delivery pipe and a communication path, and a second passageway which has a branch path and the second delivery pipe. An opposing portion opposite to the opening of a placement channel in the first delivery pipe includes the opening of the branch path in the first delivery pipe. This enables one pulsation damper to precisely suppress fuel pressure pulsations occurring in the two delivery pipes.

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