Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1990-10-30
1992-04-07
Miller, Carl Stuart
Internal-combustion engines
Charge forming device
Fuel injection system
123382, F02M 5502
Patent
active
051017938
ABSTRACT:
A manually adjustable override apparatus is connected to an existing fuel pressure regulator to alter the fuel-to-air mixture fed to fuel injectors. A T-shaped member has a lower end adapted to be connected on the vacuum hose fitting of the regulator and has an outwardly extending hose fitting. A headed plunger slidably contained in the longitudinal bore of the T-shaped member has an elongate lower end extending outwardly from the bottom of the T-shaped member and through the hose fitting of the regulator to engage the top of the diaphragm in the regulator. Vacuum communicates around the plunger between the interior of the T-shaped member and the vacuum chamber of the regulator. An adjustment screw in the top end of the T-shaped member engages a small piston slidably and sealably contained in the longitudinal bore. A compression spring is biased between the piston and the head of the plunger. The vacuum hose is removed from the regulator and the override device is installed on the existing regulator. The vacuum hose is re-installed on the hose fitting of the override device. When the adjustment scre is backed off, the diaphragm operates under pressure of the existing factory installed spring in the conventional manner, and when the adjustment screw is screwed in, the plunger is resiliently pressed against the diaphragm under the increased spring pressure of the secondary override spring to increase the pressure on the diaphragm and vary the fuel pressure resulting in a variable fuel-to-air ratio.
REFERENCES:
patent: 2944537 (1960-07-01), Stroh
patent: 2995125 (1961-08-01), Powell
patent: 3395682 (1968-08-01), Jackson
patent: 3416504 (1968-12-01), Jackson
patent: 3431900 (1969-03-01), Jackson
patent: 4441472 (1984-04-01), Knorreck
patent: 4543935 (1985-10-01), Tuckey
patent: 4658784 (1987-04-01), Augustin
patent: 4727839 (1988-03-01), Bruhman
patent: 4903721 (1990-02-01), Maier
Miller Carl Stuart
Roddy Kenneth A.
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