Device for detection of abnormality in pressure detector for internal combustion engine
US4537065A · kind A · utility
9Cited by
1References
8Claims
0Family size
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Key dates
| Filing date | Feb 1, 1984 |
| Grant date | Aug 27, 1985 |
| Priority date | — |
| Expiry date | Feb 1, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting an abnormality in a pressure detector in an internal combustion engine. This device includes a piezoelectric pressure detector, a timing detection unit, a selective connection unit, and an abnormality detection unit. The abnormality detection unit includes a capacitor connected to an oscillation circuit, and the piezoelectric pressure detector is connected in parallel with the series connection of the oscillation circuit and the capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.