Fuel injection control device and method for internal combustion engine
US10550793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2017 |
| Grant date | Feb 4, 2020 |
| Priority date | — |
| Expiry date | Dec 16, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection control device divides an amount of fuel corresponding to an injection amount required for a single combustion into portions corresponding to multiple fuel injections, causes the direct injector to inject the fuel in the multiple times, and causes the direct injector to execute a partial-lift injection as a final fuel injection. The device includes a total injection amount calculation section, an individual injection amount calculation section, and an injection amount changing section. The injection amount changing section executes, as a first changing process, a process for increasing the injection amount at the final fuel injection to a value between a partial-lift injection lower limit value and a partial-lift injection upper limit value and reducing the injection amount at a fuel injection other than the final fuel injection by the increased amount of the injection amount at the final fuel injection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.