Diaphragm carburetor with air purge system

Details Diaphragm carburetor with air purge system Diaphragm carburetor with air purge system

2005-04-05

2005-04-05

Lo, Weilun (Department: 3747)

Internal-combustion engines

Charge forming device

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

C123S179900, C123S337000

Reexamination Certificate

active

06874482

ABSTRACT:
A diaphragm carburetor-based fuel supply system is equipped with an air purge system that vents trapped air from the fuel supply system. The air purge system preferably includes a vent tube having an outlet opening into the upper portion of the system's fuel tank and an inlet located as close as practical to the diaphragm chamber of the carburetor, preferably within an internal passage of the carburetor or at least in a fitting or fuel supply tube portion located closely adjacent the fuel inlet of the carburetor. The resulting system requires only a few pull strokes to start a freshly fueled engine, as opposed to about 15 strokes in a system lacking such an air purge system. It also permits the use of a choke that is incapable of fully closing, thereby negating the need for a “false hit” during cold engine start.

REFERENCES:
patent: 3620195 (1971-11-01), Lamm et al.
patent: 3789819 (1974-02-01), Moulds
patent: 4079717 (1978-03-01), Shirose
patent: 4356801 (1982-11-01), Graham
patent: 4684485 (1987-08-01), Scott
patent: 4730592 (1988-03-01), Uozumi et al.
patent: 4732131 (1988-03-01), Hensel
patent: 4836157 (1989-06-01), Miller
patent: 4893594 (1990-01-01), Kobayashi
patent: 4905641 (1990-03-01), Miller
patent: 5063891 (1991-11-01), Noisier
patent: 5398660 (1995-03-01), Koyama et al.
patent: 5660765 (1997-08-01), King et al.
patent: 5740781 (1998-04-01), Scott et al.
patent: 6000369 (1999-12-01), Koizumi
patent: 6135428 (2000-10-01), Schliemann et al.
patent: 6227176 (2001-05-01), Hettmann
patent: 6269799 (2001-08-01), Watanabe et al.
patent: 6374810 (2002-04-01), Pattullo
patent: 6425573 (2002-07-01), Suzuki
Lombardini Fuel Injection System and De-aeration Pipe (diagram labeling parts).
Lombardini Engine Information Label (actual picture).

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