Method and a system for controlling vehicle speed
US10647320B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2015 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Jan 13, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2720/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A device and a method for controlling vehicle speed in a vehicle equipped with cruise control while traveling downhill. The method involves driving a vehicle downhill with the cruise control set to a brake speed; detecting a current vehicle speed; applying the auxiliary brake to maintain the brake speed; detecting a request for a downshift from a current gear to a lower gear; and determining if a downshift is permissible at the current speed. If a downshift is not permissible, then a control unit automatically applies the service brakes to retard the vehicle speed; retarding the vehicle from a current speed to a lower speed at which a downshift to a lower gear is permissible; and performing a downshift to a lower gear when the second vehicle speed is reached. The cruise control is set to a second brake speed lower than the first brake speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.