Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1997-07-16
1998-11-17
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Fuel injection system
12317916, F02D 4106
Patent
active
058362886
ABSTRACT:
The present invention provides an apparatus and a method for controlling fuel injection in a multicylinder internal combustion engine to prevent discharge of unburned HC and purify the exhaust gas at the engine start-up. The apparatus controls the opening of fuel injection valves by a drive circuit for a period of time on the basis of a cranking amount TAUST determined corresponding to the engine conditions at the start of the engine and a post-cranking amount TAU determined corresponding to the engine conditions after the engine is started. The apparatus detects completion of fuel injections at the start of the engine by detecting that the cranking amount TAUST has been injected once to each cylinder and switches the fuel injection amount from the cranking amount TAUST to the post-cranking amount TAU after detecting the completion of the above fuel injections.
REFERENCES:
patent: 5390641 (1995-02-01), Yamada et al.
patent: 5482023 (1996-01-01), Hunt et al.
patent: 5542393 (1996-08-01), Katoh et al.
patent: 5590633 (1997-01-01), Tomisawa et al.
patent: 5595161 (1997-01-01), Ott et al.
patent: 5690075 (1997-11-01), Tanaka et al.
Argenbright Tony M.
Toyota Jidosha & Kabushiki Kaisha
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