System and method for detecting a fault in a pressure sensor that measures pressure in a hydraulic valve actuation system
US8631688B1 · kind B1 · utility
18Cited by
5References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 5, 2012 |
| Grant date | Jan 21, 2014 |
| Priority date | — |
| Expiry date | Sep 5, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/001
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system according to the present disclosure includes a pressure estimation module and a fault detection module. The pressure estimation module estimates a pressure of hydraulic fluid in a valve actuation system that actuates at least one of an intake valve and an exhaust valve of an engine. The fault detection module compares the estimated pressure to a pressure measured by a pressure sensor disposed in the valve actuation system and detects a fault in the pressure sensor based on a difference between the estimated pressure and the measured pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.