Protection method for an engine having a variable valve timing controller and protection apparatus for the same
US6948464B2 · kind B2 · utility
11Cited by
3References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 5, 2004 |
| Grant date | Sep 27, 2005 |
| Priority date | — |
| Expiry date | Mar 5, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/003
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The variable valve timing controller has an electric motor which rotates a phase converter. When the electric motor is locked for some reason, the over-load more than the predetermined value is applied to a motor shaft and the phase converter. In such a case, a pin connecting the motor shaft with the phase converter is sheared at a notch. Thus, a cam shaft and the phase converter were not locked, and breakage of a motor housing is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.