Accumulator fuel injection system capable of preventing abnormally high pressure
US6964262B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 2004 |
| Grant date | Nov 15, 2005 |
| Priority date | — |
| Expiry date | May 8, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An accumulator fuel injection system 1 comprises a PC sensor 21 for detecting a common rail pressure, a pressure limiter 22 for keeping the common rail pressure below a high limit pressure by opening its valve when the common rail pressure exceeds the high limit pressure, and an ECU 14 for controlling flow rate of fuel to be injected from an injector 13 so that the common rail pressure reaches the high limit pressure when an engine is started in a state in which an abnormality has occurred in the supply under pressure by a supply pump 12. It is possible to keep the common rail pressure within an actually used region by opening the pressure limiter after the engine is started, even in a state in which a full open abnormality has occurred at a suction flow control valve 15.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.