Automatic clutch control system
US4529072A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1982 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | Mar 12, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2500/7105
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system is provided which controls the pressure with which a clutch engages, utilizing a slip rate of the clutch which is equal to the ratio of the rotational speed of the output shaft to the rotational speed of the drive shaft thereof as a main parameter. A microprocessor reads a throttle opening and the slip rate at a time interval of 0.4 sec from the initiation of the clutch engagement, and accesses a particular group of clutch engagement controlling data which correspond to the time l elapsed and to these parameters. The controlling signals of the particular group are sequentially outputted to the clutch energizing device at a subinterval of 0.05 sec during the time interval of 0.4 sec. The interval changes from l=0 to l=8 at maximum, from the initiation to the completion of the clutch engagement. Each interval l=0 to l=8 corresponds to 0.4 sec. Whenever a temporary clutch activation is instructed, the microprocessor increases the subinterval of 0.05 sec to 0.1 sec and the time interval l to 0.8 sec. The value of l is incremented by one after a time length of either 0.4 or 0.8 sec elapses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.