Method and system for engine throttle control
US5717592A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1995 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | Nov 6, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/42065
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and system are provided for positioning a gasoline engine throttle in response to an angular position input command signal. A multi-phase variable reluctance motor positions the throttle in response to motor current commands from a micro-controller. The micro-controller receives and processes the position input command and throttle position feedback signals from a multi-phase variable inductance position encoder rotatably coupled with the motor shaft. The motor current command are obtained from look-up tables that are derived from empirical data of the motor. The motor current command tables are a mapping from motor rotor position and desired motor torque to desired motor currents in the appropriate phases of the motor to hold the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.