Internal combustion engine control during cold start

Internal-combustion engines – Engine speed regulator – Idle speed control

Reexamination Certificate

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Details

C123S491000

Reexamination Certificate

active

06941927

ABSTRACT:
The invention relates to a method for controlling an internal combustion engine during a cold start operation. The engine is supplied with a substantially constant, lean air/fuel ratio immediately after the engine is started, while the engine has an idle speed that is allowed to vary as a function of the difference between a target air/fuel ratio and an actual air/fuel ratio. The invention further relates to an arrangement for carrying out the method.

REFERENCES:
patent: 5188082 (1993-02-01), Udo et al.
patent: 5579737 (1996-12-01), Tomisawa
patent: 5715796 (1998-02-01), Suzuki et al.
patent: 5954025 (1999-09-01), Kanamaru et al.
patent: 6098605 (2000-08-01), Brooks
patent: 6637413 (2003-10-01), Maloney et al.
patent: 6672284 (2004-01-01), Majima
patent: 2002/0043247 (2002-04-01), Majima
patent: 19740699 (1999-03-01), None
patent: 0894964 (1999-02-01), None

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