Driving force control apparatus and method for a vehicle
US6412886B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1995 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Mar 28, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/18
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In a driving force control apparatus, a target driving torque TO is obtained based on a value determined by subtracting a feedback correction torque TF corresponding to a slip amount DVS from a correction reference torque TBC corresponding to a vehicle body speed VB. Slip is suppressed by a throttle control so that the engine output is reduced to the target driving torque TO. A retard command is output when the slip amount DVS and a slip rate GDVS are greater than predetermined values to retard an ignition timing of the engine, thereby suppressing an abrupt slip. When it is determined that a right and left front wheel speed difference is large and the vehicle is running on a split road, a retard command is made difficult to be reset as compared to a case where the vehicle is not running on a split road. When it is detected that the driving wheels are vibrating, particularly a differential factor is decreased and regulated only to a component to reduce the target driving torque. With the driving force control apparatus, when a slip occurs, the engine output is reduced to prevent vehicle body vibration during operation of a device to suppress a slip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.