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Title:
CARBURETOR OPENING SENSING DEVICE
Document Type and Number:
Japanese Patent JPH07317574
Kind Code:
A
Abstract:

PURPOSE: To provide a carburetor opening sensing device which can work well with smaller size of construction using a simple structure, allows suppression of the costs, accomplishes enhancement of the sensing accuracy, and can enhance the accuracy in the sensing position of a variable area valve.

CONSTITUTION: An opening sensing device for a carburetor is formed from a carburetor body 2 having a venturi passage 6 and a valve chamber 7 formed in such a way as opening to the passage and a variable area valve 9 arranged in the valve chamber 7 slidably and varying the area of the venturi passage, wherein a magnet 25 is secured to the valve 9. Magnetic sensor 28a-28c to emit the outputs in accordance with the intensity of the magnetic field generated by the magnet 25 are installed in that position on the outer surface of a bulkhead 2d to form the valve chamber 7 which can be situated opposingly to the magnet 25, and further a magnetic path is formed for concentration of the magnetic flux generated by the magnet 25 on either of the magnetic sensors 28a-28c in compliance with the movement of the valve 9.


Inventors:
Nakano, Takatoshi
Application Number:
JP1994000115252
Publication Date:
December 05, 1995
Filing Date:
May 27, 1994
Export Citation:
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Assignee:
YAMAHA MOTOR CO LTD
International Classes:
G01B7/30; F02B77/08; F02D9/00; F02D35/00; F02M7/22; F02M9/06; F02M19/00; G01B7/00; (IPC1-7): F02D9/00; F02B77/08; F02D35/00; F02M7/22; F02M9/06; F02M19/00; G01B7/30
Attorney, Agent or Firm:
下市 努