Internal-combustion engines – Engine speed regulator – Idle speed control
Reexamination Certificate
2007-10-04
2010-10-19
Cuff, Michael (Department: 3741)
Internal-combustion engines
Engine speed regulator
Idle speed control
C123S339270, C123S585000, C123S339140
Reexamination Certificate
active
07814884
ABSTRACT:
To accurately supply idle air without influence of pulsative pressure generated within an intake passage, a lower end surface (21a2) of a bottom portion (21a) of an air control valve (21) is arranged in a contact manner via a closing member (1) toward a locking piece portion (2) fixed to an end portion of a shaft portion (20b) of a slider (20), an annular gap (S2) formed by an inner periphery (21a1) of the bottom portion (21a) and an outer periphery (20d) of the shaft portion (20b) is closed by the closing member (1) arranged in a contact manner on the lower end surface (21a2), and cuts off communication between a space portion (25), which is formed between a tube portion (21b) of the air control valve (21) and the shaft portion (20b), and a lower chamber (12g) of a valve body guide hole facing to the bottom portion (21a).
REFERENCES:
patent: 4381747 (1983-05-01), Kobayashi et al.
patent: 5325830 (1994-07-01), Hammer
patent: 6446599 (2002-09-01), Nakayasu
patent: 6571766 (2003-06-01), Saeki et al.
patent: 7302929 (2007-12-01), Kondo
patent: 1 734 236 (2006-12-01), None
patent: 2007-132234 (2007-05-01), None
Bacon & Thomas PLLC
Cuff Michael
Keihin Corporation
Nguyen Hung Q
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