Automotive constant speed cruise control system
US5003482A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 14, 1989 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Jul 14, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2059/083
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automotive constant speed cruise control system for a vehicle includes a controller for automatic speed change for automatically changing over a speed stage in a transmission in accordance with the relationship between a throttle valve opening degree and a car speed; a controller for constant speed traveling having a constant speed traveling control function for operating a car at a target car speed by controlling, based on a duty ratio, the throttle valve opening degree according to the actual car speed and a transmission limiting function for sending out a signal for prohibiting selection of the maximum speed stage in the transmission to the controller for automatic speed change for a specified time when the car speed lowers, and a transmission limiting function capable of being externally started by inputting a speed change signal representing that the transmission has been shifted down from a maximum speed to the controller for constant speed traveling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.