Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1998-02-17
1999-12-07
Argenbright, Tony M.
Internal-combustion engines
Engine speed regulator
Idle speed control
F02D 900
Patent
active
059965533
ABSTRACT:
An internal combustion engine idle air control system including an idle air control actuator coupled to an idle air control valve for varying the position of the valve within an engine intake air passage for engine inlet air control under idle operating conditions adjusts the time rate of change in position of the idle air control valve in response to change in barometric pressure to account for change in air density passing across the valve and to account for change in torque load acting against the valve to precisely respond to torque load changes during idle operations without violating idle air control actuator stability margins.
REFERENCES:
patent: 4337742 (1982-07-01), Carlson et al.
patent: 4359983 (1982-11-01), Carlson et al.
patent: 4901000 (1990-02-01), Center et al.
patent: 4926335 (1990-05-01), Flowers et al.
patent: 5429088 (1995-07-01), Lang et al.
patent: 5638788 (1997-06-01), Sanvido et al.
patent: 5740045 (1998-04-01), Livhiz et al.
Livshiz Mike
Sanvido David Jeffrey
Singh Sharanjit
Tolkacz Joseph Mark
Argenbright Tony M.
Bridges Michael J.
Castro Arnold
General Motors Corporation
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