Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1990-01-05
1991-05-07
Wolfe, Willis R.
Internal-combustion engines
Engine speed regulator
Idle speed control
123478, 123488, F02D 4108, F02M 5100
Patent
active
050127802
ABSTRACT:
An electronic fuel injection system operable as a bolt on retro fit replacement for a wide variety of carburetors is disclosed. The system includes a throttle body-injector assembly which, by means of an adapter may be bolted directly to stock intake manifolds using the carburetor mounting bolt holes in the manifold. The throttle body passages and injectors are designed to meet the fuel and air delivery requirements of large displacement engines and an electronic control unit which controls the solenoid actuated injectors in a duty cycle operation is provided with externally accessible adjustments by means of which the system may be adjusted to tune the rate of fuel injection to the fuel delivery requirements of engines of displacements much smaller than the largest displacement engine within the systems capability. The system may be independently adjusted for optimum or user selected economy or power operation at idle, mid range and high rpm engine operation and further includes choke and accelerating enrichment adjustments. The control unit also controls operation of the fuel pump to maintain a constant injection pressure at all times.
REFERENCES:
patent: 4096831 (1978-06-01), Gunda
patent: 4212277 (1980-07-01), Melotti
patent: 4341193 (1982-07-01), Bowler
patent: 4347823 (1982-09-01), Kessler et al.
patent: 4372271 (1983-02-01), Elpern et al.
patent: 4705001 (1987-11-01), Danno et al.
patent: 4827897 (1989-05-01), Yamada et al.
Coltec Industries Inc.
Reiter Howard S.
Wolfe Willis R.
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