Throttle actuator safety method for automated transmission
US5048481A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 1989 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Dec 15, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H63/502
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A safety method is provided for use with control systems for vehicles such as trucks, and in particular for electromechanical controls (10) that assist the driver in shifting the gears (12), operating the clutch (16), and in actuating the throttle (22, 24, 26) by remote control. The method, which is for use in a vehicle's throttle-actuator subsystem (26A), utilizes a transmission control processor (42A) and a throttle control processor (42B). The method ascertains whether, when the driver of the vehicle removes his foot from the accelerator pedal (24A), control of the fuel pump (26C) returns to the idle governor as it should. The flow of fuel is stopped if it does not return properly. Also, a method is provided that monitors the throttle actuator (26A) to insure that it accurately follows throttle commands such as the position of the accelerator pedal (24A).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.