Apparatus for injecting fuel into internal combustion engine

Details Apparatus for injecting fuel into internal combustion engine Apparatus for injecting fuel into internal combustion engine

1985-11-08

1987-08-04

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123179L, 123479, 3644311, F02D 4106

Patent

active

046838597

ABSTRACT:
In a fuel injection system for an internal combustion engine, the voltage of a vehicle-mounted battery is monitored to see if the voltage is below a predetermined voltage at which a microcomputer used in an electronic control unit is disabled or malfunctions on engine start where large current is consumed by a starter motor. During engine start, asynchronous fuel injection is performed using the result of the voltage monitoring in place of normal or main fuel injection. The amount of fuel to be injected by the asynchronous fuel injection may be limited and/or the number of times of asynchronous fuel injection may be limited so as to prevent excessive fuel supply. In monitoring the battery voltage, hysteresis characteristic may be given to a reference voltage so as to avoid undesirable chattering.

REFERENCES:
patent: 4171692 (1979-10-01), Drews et al.
patent: 4180020 (1979-12-01), Reddy
patent: 4198932 (1980-04-01), Reddy et al.
patent: 4208991 (1980-06-01), Reddy
patent: 4541390 (1985-09-01), Steinbrenner et al.
patent: 4587939 (1986-05-01), Hemminger et al.

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