Fuel injection control system ensuring steady balance in pressure in accumulator
US7370638B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 2006 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Dec 5, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M59/462
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An accumulator fuel injection system working to energize fuel injectors to inject fuel at a sequence of injection timings into an internal combustion engine and also to control a fuel pump to feed the fuel to an accumulator at a sequence of controlled times for compensating for the amount of the fuel flowing out of the accumulator under feedback control. When having found a failure in operation of at least one of the fuel injectors, the system alters a mode of the feedback control to decrease the amount of fuel fed to the accumulator at one of the sequence of the controlled times which is at a selected interval away from one of the sequence of the injection timings at which the at least one of the fuel injectors is to be energized, thereby ensuring a steady balance between the amounts of fuel flowing into and out of the accumulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.