Fuel supply system for an internal combustion engine

Details Fuel supply system for an internal combustion engine Fuel supply system for an internal combustion engine

2005-01-11

2005-01-11

Miller, Carl S. (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S041310, C123S541000

Reexamination Certificate

active

06840219

ABSTRACT:
A fuel delivery system for an internal combustion engine, having a fuel feed pump, which delivers fuel which is at pilot pressure to a high-pressure fuel pump that communicates on the high-pressure side with at least one injection valve, in order to deliver fuel at high pressure to the injection valve or valves. To prevent vapor bubble development in the high-pressure fuel pump, which impairs its pumping capacity and pressure generation, a coolant medium flow can be delivered to the high-pressure fuel pump via at least one coolant conduit, in order to keep the temperature (THDP) of the high-pressure fuel pump below a critical operating temperature (Tk1).

REFERENCES:
patent: 4869218 (1989-09-01), Fehlmann et al.
patent: 4915063 (1990-04-01), Stumpf
patent: 5647331 (1997-07-01), Swanson
patent: 5908020 (1999-06-01), Boutwell et al.
patent: 6009859 (2000-01-01), Roche et al.
patent: 6247441 (2001-06-01), Sato et al.
patent: 19818421 (1999-10-01), None

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