Electronic control type throttle valve apparatus, non-contact type rotation angle detecting apparatus used in electronic control type throttle valve apparatus etc. and signal processing apparatus for hall element
US7235963B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 2004 |
| Grant date | Jun 26, 2007 |
| Priority date | — |
| Expiry date | Nov 12, 2024 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/0404
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.