Control apparatus and control method of negative pressure actuator
US6622699B2 · kind B2 · utility
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2References
16Claims
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Key dates
| Filing date | Jul 10, 2002 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Jul 10, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a negative pressure actuator which is provided with a negative pressure tank storing an intake negative pressure of an engine, and operated by a negative pressure stored in said negative pressure tank as a power source, an operating possible time of the negative pressure actuator is calculated based on an intake negative pressure, the operation of the negative pressure actuator is permitted when it is within the operating possible time, while the operation of the negative pressure actuator is prohibited when it is over the operating possible time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.