Method and apparatus for automatic engine shut-off and restart
US4192279A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 1979 |
| Grant date | Mar 11, 1980 |
| Priority date | — |
| Expiry date | Jan 17, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/19
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for automatic arrest of the motor in a motor vehicle in conditions of standstill or near-standstill, for example when the motor reaches speeds at or below the stalling speed with an engaged drive line. In stop-and-go driving, the invention includes monitoring the vehicle speed, the motor speed and the state of actuation of the accelerator pedal and the clutch pedal. If a set of conditions is met, for example that the vehicle speed is below 3 kilometers per hour, and that neither the accelerator pedal nor the clutch pedal are depressed, and the engine temperature is sufficiently high, the apparatus of the invention automatically arrests the engine either by fuel shut-off or by ignition shut-off or both. A depression of the clutch pedal restarts the engine. The invention further provides for automatic fuel shut-off to the motor under the conditions of engine braking, i.e., operation with closed throttle and relatively high motor speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.