Fuel injection controller and fuel injection system
US9982616B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2016 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Sep 20, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/389
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection controller includes an increase control portion applying the boost voltage to the coil to increase a coil current to a first target value, and a constant current control portion applying a voltage to the coil to hold the coil current to a second target value. A threshold is an energization time period that is necessary to reach a boundary point between a seat throttle area of a property line and an injection-port throttle area of the property line from an energization start time point. An initial-current applied time period is from the energization start time point that the boost voltage starts to be applied to the coil to a time point that the coil current is decreased to the second target value. The increase control portion controls the coil current such that the initial-current applied time period is less than the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.