Idling opening degree control apparatus in intake air...

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

Reexamination Certificate

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Details

C123S339130, C123S339260, C123S400000

Reexamination Certificate

active

07124736

ABSTRACT:
To make a motor to control throttle valve opening degree compact and reduce electricity consumption, a throttle valve lever (4) attached to a throttle valve shaft (3) has a roller (4b) and an operating arm portion (4a), a loosely fitted lever (8) is arranged to the throttle valve shaft (3), the operating arm portion (4a) is arranged in a gap (S) between first and second locking portions (8a1, 8a2) of the loosely fitted lever (8), a cam surface (7a) of a cam lever (7) connected to an output shaft (Ma) of a lead screw type step motor (M) faces to the roller (4b), a throttle valve operating drum (11) is coupled to the loosely fitted lever (8) via a link cover (13) and, when the motor (M) is driven, the cam lever (7) rotates the throttle valve lever (4) and the arm portion (4a) rotates within the gap (S) to hold an idling opening degree.

REFERENCES:
patent: 4787353 (1988-11-01), Ishikawa et al.
patent: 6581567 (2003-06-01), Deguchi
patent: 6691680 (2004-02-01), Saito
patent: 6761145 (2004-07-01), Matsuda et al.
patent: 6868828 (2005-03-01), Kondo
patent: 6964259 (2005-11-01), Raetzman
patent: 2005-307912 (2005-11-01), None

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