Mechanical throttle body injection apparatus

Details Mechanical throttle body injection apparatus Mechanical throttle body injection apparatus

1978-08-04

1980-06-10

Lazarus, Ira S.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

261 36A, 261 39D, 261 50A, F02M 3900

Patent

active

042067359

ABSTRACT:
A mechanical, throttle body injection apparatus has an air valve positioned metering rod controlling fuel flow from a constant pressure fuel source through one side of a pressure regulator valve to a nozzle for continuous fuel injection into the throttle bore of the throttle valve controlling induction flow therethrough. Excess fuel, not metered by the metering rod, applies a control pressure to the other side of the pressure regulator valve and is returned to a fuel reservoir via a drain passage, flow through which is controlled by a pulse width modulated solenoid valve. The apparatus includes means for fuel enrichment at cold start and during engine warm-up.

REFERENCES:
patent: 2785669 (1957-03-01), Armstrong
patent: 2958321 (1960-11-01), Haase
patent: 3680535 (1972-08-01), Eckert et al.
patent: 3728993 (1973-04-01), Eckert et al.
patent: 3730155 (1973-05-01), Knapp
patent: 3739762 (1973-06-01), Jackson
patent: 3765387 (1973-10-01), Knapp
patent: 4046121 (1977-09-01), Pierlot
patent: 4075995 (1978-02-01), Kramer
patent: 4089308 (1978-05-01), Pierlot

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