Electronic system for monitoring clutch brake engagement and clutch slippage
US4848531A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1987 |
| Grant date | Jul 18, 1989 |
| Priority date | — |
| Expiry date | Jul 30, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19284
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electronic system for monitoring the operation of a vehicle friction clutch assembly and for generating an indication when the clutch brake of the assembly is frictionally engaged is disclosed. The system generates an electrical signal which is representative of the rotational speed of the clutch brake. To accomplish this, a plurality of magnets or a plurality of radially outwardly extending teeth are secured to the clutch brake. A sensor is disposed near the clutch brake which is responsive to the passage of the magnets and teeth rotating thereby. The sensor generates an electrical pulse train signal having a frequency which is proportional to the rotational speed of the clutch brake. An electronic control circuit is provided for generating an indication when the value of the clutch brake rotational speed signal approaches zero, indicating that the clutch brake is frictionally engaged. A similar sensor be provided for determining the rotational speed of the flywheel of the friction clutch assembly. The control circuit compares the flywheel rotational speed signal with the clutch brake rotational speed signal and generates an indication when the values of the two signals are not…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.