Automatic vehicle driving system and method of driving the same on chassis dynamometer
US5193062A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1991 |
| Grant date | Mar 9, 1993 |
| Priority date | — |
| Expiry date | Jan 29, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M17/0074
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an automatic test vehicle driving system on a chassis dynamometer, a table between accelerator actuator stroke and engine output torque and a table between engine friction loss power and engine speed are formed and stored by teaching operation before vehicle travel test. During travel test, command accelerator actuator strokes are determined with reference to the formed stroke-torque table when the test vehicle is accelerated or kept at a constant speed to reduce setting time for each test vehicle. Further, it is determined whether vehicle speed can be decelerated by only engine brake or by depression of brake pedal with reference to the formed friction loss power-engine speed table to prevent unnecessary braking operation. Since engine output torque can be determined in open-loop control, complicated control gain adjustment setting work can be eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.