Hill hold decay
US9126597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Mar 29, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2201/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hill hold decay (HDD) system of a vehicle. The system includes a longitudinal acceleration sensor, a wheel speed sensor, a brake pedal detector, a gas pedal detector, a gear sensor, and a controller. The controller is configured to determine the vehicle has come to a standstill, determine a slope of the ground the vehicle is on, determine a direction of travel of the vehicle is downhill, detect a release of a brake release a brake force applied to a plurality of wheels of the vehicle at a constant first rate, determine a speed of the vehicle has reached a minimum threshold, release the brake force at a second rate as long as the speed of the vehicle is increasing, determine the speed of the vehicle has reached a maximum threshold, and release the brake force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.