Suction air negative pressure detecting apparatus of...

Details Suction air negative pressure detecting apparatus of... Suction air negative pressure detecting apparatus of...

2006-05-16

2006-05-16

Huynh, Hai (Department: 3747)

Internal-combustion engines

Engine speed regulator

Specific throttle valve structure

C123S1950AC

Reexamination Certificate

active

07044106

ABSTRACT:
To inhibit rotation of a sensor case by excessive rotational force applied thereto, a suction air negative pressure detecting apparatus is structured such that a regular polygonal shaped positioning convex portion is provided on a case containing a pressure sensor, a positioning concave hole having apex angle concave portions at a multiple number of apex angle convex portions of a regular polygon forming the positioning convex portion is provided in a flat-shaped pressure plate arranged on the case, the positioning concave hole is engaged with the positioning convex portion, and the pressure plate is fixed by screw to a throttle body, the case is fixed toward the throttle body by the pressure plate, and a rotation of the case is inhibited by engaging the positioning convex portion with the positioning concave hole.

REFERENCES:
patent: 4519369 (1985-05-01), Kitamura
patent: 6341593 (2002-01-01), Kamimura et al.
patent: 6412471 (2002-07-01), Trublowski et al.
patent: 6470739 (2002-10-01), Matsumura et al.
patent: 6845656 (2005-01-01), Matsumura et al.

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