Carburetor start pump circuit

Details Carburetor start pump circuit Carburetor start pump circuit

2007-03-06

2007-03-06

Cronin, Stephen K. (Department: 3747)

Internal-combustion engines

Starting device

Auxiliary fuel supply device

C123S179140, C261S035000

Reexamination Certificate

active

10887152

ABSTRACT:
A carburetor start pump circuit, for starting an engine has an auxiliary fuel pump mounted on a relatively standard carburetor body, a start pulse passage extending through the carburetor body to the auxiliary fuel pump, and a fuel circuit having an intake side which extends from a metering chamber of the carburetor body to the auxiliary fuel pump and a discharge side which is interconnected to the intake side and extends from the auxiliary fuel pump to a throttle bore in the air intake of the carburetor body. To prevent the engine from stalling, a restriction jet is placed within the start pulse passage to prevent the auxiliary fuel pump from discharging fuel into the throttling bore when the engine transmits pulses at high frequencies.

REFERENCES:
patent: 3743254 (1973-07-01), Tuckey
patent: 4159012 (1979-06-01), Pizzuto et al.
patent: 4508068 (1985-04-01), Tuggle et al.
patent: 4554896 (1985-11-01), Sougawa
patent: 4648998 (1987-03-01), Araki
patent: 4814114 (1989-03-01), Charmley
patent: 4903655 (1990-02-01), Vonderau et al.
patent: 5150673 (1992-09-01), Hoshiba et al.
patent: 5706774 (1998-01-01), Shaw
patent: 6135429 (2000-10-01), Woody
patent: 6374810 (2002-04-01), Pattullo
patent: 6523809 (2003-02-01), Woody
patent: 6533254 (2003-03-01), Grifka et al.
patent: 6622992 (2003-09-01), Woody

Affiliated with

Also associated with

Rating

Carburetor start pump circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Carburetor start pump circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carburetor start pump circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3735823