Engine system and method of controlling engine system
US10655555B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 12, 2018 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Jan 16, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/224
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine system includes: an engine including a direct injection valve that injects fuel into a cylinder of the engine and a port injection valve that injects fuel into an intake port of the engine; and an electronic control unit configured to control an operation of the engine by adjusting, based on a state of the engine, a rate of fuel injection from the direct injection valve with respect to total fuel injection and a rate of fuel injection from the port injection valve with respect to the total fuel injection. The electronic control unit executes a malfunction diagnosis with the rate of fuel injection from the direct injection valve set to 100%, when the electronic control unit determines that an execution condition for executing the malfunction diagnosis on a fuel system is satisfied and a power required of the engine is equal to or greater than a prescribed power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.