Flow intensifier for cold starting gasoline direct injection...

Details Flow intensifier for cold starting gasoline direct injection... Flow intensifier for cold starting gasoline direct injection...

2005-05-31

2005-05-31

Moulis, Thomas (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel flow regulation between the pump and the charge-forming...

C123S511000, C123S456000, C123S446000

Reexamination Certificate

active

06899088

ABSTRACT:
In a common rail gasoline fuel injection system having a high pressure fuel supply pump (14) in which fuel is pressurized in a pumping chamber and delivered through a high pressure passage (16) to the common rail (18), the improvement comprising a flow volume intensifier (22) situated in the high pressure passage (16). Preferably the intensifier has a cranking configuration in which a primary piston (32) of relatively low effective cross sectional area on which only the primary pressure of the pumping chamber is imposed, and a secondary piston (44) contacting the primary piston (32) and having a relatively large effective cross sectional area on which only the common rail pressure is imposed, whereby when the primary piston (32) is displaced a primary volume toward the secondary piston (44) by the primary pressure from the pumping chamber, the secondary piston (44) displaces a secondary volume of fuel into common rail (18) that is larger said primary volume.

REFERENCES:
patent: 4449507 (1984-05-01), Mayer
patent: 4667638 (1987-05-01), Igashira et al.
patent: 5355856 (1994-10-01), Paul et al.
patent: 5546912 (1996-08-01), Yamada et al.
patent: 5884597 (1999-03-01), Hiraku et al.
patent: 6073597 (2000-06-01), Harata et al.
patent: 6415770 (2002-07-01), Kojima
patent: 6637408 (2003-10-01), Djordjevic
patent: 6776138 (2004-08-01), Mahr et al.
patent: 6786205 (2004-09-01), Stuhldreher et al.
patent: 09250426 (1997-09-01), None
patent: 20002976674 (2000-10-01), None

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