Redundant reset for electronic throttle control
US4998520A · kind A · utility
16Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 1990 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | May 11, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/266
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Redundancy is imparted to the reset signal from a voltage regulator integrated circuit by connecting an RC timing circuit with the regulated voltage output and with the reset pulse output such that a reset pulse derived from the regulated output voltage is given in the event that the reset output of the integrated circuit fails to give a reset pulse. An over-/under-voltage detector monitors the regulated voltage output for also giving a reset signal in the event that the regulated output strays beyond allowable limits. The occurrence of a reset causes interruption of electric power to the throttle motor and of fuel to the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.