ELECTRONIC CONTROL TYPE THROTTLE VALVE APPARATUS,...

Details ELECTRONIC CONTROL TYPE THROTTLE VALVE APPARATUS,... ELECTRONIC CONTROL TYPE THROTTLE VALVE APPARATUS,...

2005-12-13

2005-12-13

Kwon, John T. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Open loop condition responsive

C123S361000, C073S118040, C701S103000

Reexamination Certificate

active

06973916

ABSTRACT:
In an electronic control type throttle valve apparatus, a throttle valve position sensor includes a magnet provided at a throttle valve shaft and a hall element which output changes in accordance with the rotational deviation of the magnet. The hall element is housed within a sensor chip together with an amplifier circuit. In a control unit provided separately from the sensor chip, there are provided with an A/D conversion circuit for converting an analog output from the hall element through the amplifier circuit into a digital signal and a digital processing circuit for performing temperature compensation and zero-span adjustment of the hall element in a digital manner.

REFERENCES:
patent: 5606948 (1997-03-01), Gonnering
patent: 6457353 (2002-10-01), Kanke et al.
patent: 6647328 (2003-11-01), Walker

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