Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Patent
1998-07-06
2000-01-11
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
25112911, 318611, F01N 900, F02M 2507
Patent
active
060124377
ABSTRACT:
A control (60) for an EGR valve (24) including an actuator (16) for moving the EGR valve (24) between a closed position and an open position, and a position sensor (48) for detecting the position of the EGR valve (24) and generating a position output signal. A processing circuit (70,72) receives the position output signal and transmits electrical control signals to energize the actuator (16) and move the EGR valve (24). Control logic is implemented whereby, when the EGR valve (24) is moving towards the closed position, the processing circuit (70,72) transmits first electrical control signals for energizing the actuator (16) in a first predetermined manner when the position output signal indicates that the EGR valve (24) is at least a predetermined distance away from the closed position. When the position output signal indicates that the EGR valve (24) is less than the predetermined distance away from the closed position, the processing circuit (70,72) transmits second electrical control signals for energizing the actuator (16) in a second predetermined manner.
REFERENCES:
patent: 3915134 (1975-10-01), Young et al.
patent: 4364111 (1982-12-01), Jocz
patent: 4810946 (1989-03-01), Sweeney, Jr.
patent: 5503131 (1996-04-01), Ohuchi
patent: 5606957 (1997-03-01), Feucht
patent: 5937835 (1998-08-01), Turner et al.
Leonard Mark
Radhamohan Subbaraya
Turner David
Argenbright Tony M.
Castro Arnold
Eaton Corporation
Kosinski Charles E.
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