Air flow rate control apparatus for internal combustion engine

Details Air flow rate control apparatus for internal combustion engine Air flow rate control apparatus for internal combustion engine

1995-05-10

1997-06-24

Dolinar, Andrew M.

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

318685, 318696, F02D 4120, H02P 822

Patent

active

056409435

ABSTRACT:
An air flow rate control apparatus for an internal combustion engine includes a stepping motor. The stepping motor has a plurality of coils and a rotor which is rotated by energizing the coils. A throttle valve connected to the rotor moves together with the rotor, and controls a rate of air flow drawn into the internal combustion engine. A control device is operative for feeding command currents of first and second command current values to first and second coils among the plurality of the coils respectively, and for controlling a degree of opening of the throttle valve. The first and second command current values correspond to a command degree of opening of the throttle valve at which the control device is intended to control the throttle valve. A direction of a resultant of vector forces generated by the first and second command currents simultaneously fed to the first and second coils corresponds to a held position of the rotor. A magnitude of the resultant of the vector forces corresponds to a magnitude of a hold force of the rotor.

REFERENCES:
patent: 4490664 (1984-12-01), Moriguchi
patent: 4710691 (1987-12-01), Bergstrom et al.
patent: 4823749 (1989-04-01), Eisenmann et al.
patent: 4854283 (1989-08-01), Kiyono et al.
patent: 4929879 (1990-05-01), Wright et al.
patent: 5433283 (1995-07-01), Shultz et al.
Derwent Abstract WPI Accession No. 95-030856/05 and DE 4319715; Dec. 1994.
Derwent Abstract WPI Accession No. 94-127220/16 and DE 4233881; Apr. 1994.
Patent Abstracts of Japan; "Driving Method for Stepping Motor"; Appln. No. 1-194897; Aug. 1989.

Affiliated with

Also associated with

Rating

Air flow rate control apparatus for internal combustion engine does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air flow rate control apparatus for internal combustion engine, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air flow rate control apparatus for internal combustion engine will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-144900