Starter interlock for electronically controlled vehicle
US5252861A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1991 |
| Grant date | Oct 12, 1993 |
| Priority date | — |
| Expiry date | Jul 18, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/6823
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a vehicle in which the engine is started from a battery and in which a safety interlock prevents starting if the transmission is not in neutral, the safety interlock is of a type that latches into a condition that enables cranking to continue even when the battery voltage becomes so low that some of the control circuits would not work properly. The interlock is latched when a start command occurs if the transmission is in neutral and the clutch is disengaged. The interlock remains latched until the start command ceases. Limited automatic control of the engine's throttle can also be provided during cranking. If desired, the safe status of the transmission and clutch can continue to be monitored during the cranking and the interlock can be unlatched if the transmission or clutch becomes engaged.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.