Torque converter and clutch control with piezoelectric devices
US4930608A · kind A · utility
12Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 1989 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | May 8, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2045/0294
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A torque converter and clutch assembly has a piezoelectric control portion. One piezoelectric device is subjected to the transient torques transmitted to the clutch, and generates a signal in response to the transient torque. Another piezoelectric device is electrically connected with the first piezoelectric device and is expandable in response to the electric signal to initiate clutch disengagement and provide clutch slip to thereby reduce the transmission of transient torque spikes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.