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Title:
OPENING DETECTING DEVICE OF CARBURETER
Document Type and Number:
Japanese Patent JP3946842
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide an opening detecting device of a carburetor for correctly detecting the opening throughout a whole area of a valve opening.
SOLUTION: In a carburetor 1, two magnets 21, 22 are provided on a side face of a valve 5 in such manner that the magnetizing direction thereof is vertical to a sliding direction of the valve 5. The magnetizing directions of two magnets 21, 22 are opposite to each other, and two magnets 21, 22 are separated from each other over a moving range of the valve 5. Further two magnets 21, 22 are provided in parallel with a central axis of the valve 5, and three-dimensionally form a closed magnetic circuit. A magnetic sensor 23 is arranged on an outer face on a straight line in parallel with a straight line connecting two magnets 21, 22. Accordingly the magnetic sensor 23 detects the magnetic field given from the magnets when the valve 5 is vertically moved, and outputs a continuous signal corresponding to the opening of a Venturi path 11.


Inventors:
Nekado, Yasuo
Tsuchiya, Hideki
Kusumi, Masaaki
Application Number:
JP1997000302163
Publication Date:
July 18, 2007
Filing Date:
November 04, 1997
Export Citation:
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Assignee:
SONY PRECISION TECHNOLOGY INC
International Classes:
F02M19/00; G01B7/30; F02B77/08; F02D9/00; F02D35/00; F02M7/22; G01B7/00; (IPC1-7): F02D9/00; F02B77/08; F02D35/00; F02M7/22; F02M19/00; G01B7/30
Domestic Patent References:
JP60190947U
Attorney, Agent or Firm:
小池 晃
田村 榮一
伊賀 誠司