Injection control device
US10957474B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Aug 5, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/2075
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An injection control device controls a solenoid in a fuel injection valve. The injection control device includes a transistor on an upstream side of a first power supply path to the solenoid, and a transistor on an upstream side of a second power supply path to the solenoid. The injection control device has another transistor with a body diode arranged in parallel at a position between an upstream terminal of the solenoid and ground. The injection control device also includes a transistor on the downstream side of the first and second power supply paths. A drive controller in the injection control device drives the solenoid to an open position by switching ON the transistor on the downstream side and one of the transistors on the upstream side power supply paths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.