| 主权项 |
1. A control device for an internal combustion engine,
said internal combustion engine comprising: a port injection valve that injects fuel into an intake passage; a storage section that stores the fuel to be injected from said port injection valve; and a feed pump that pressurizes and supplies the fuel to said storage section, said control device comprising: a fuel pressure sensor that detects a pressure of the fuel stored in said storage section; and a control unit that controls said feed pump based on a detection value of said fuel pressure sensor, and performs an abnormality diagnosis of said fuel pressure sensor based on a detection value of said fuel pressure sensor when a target pressure of the fuel stored in said storage section is changed, said control unit being configured to cause first processing to be performed in response to a start signal that starts said internal combustion engine, for changing said target pressure, and cause the second processing to be performed subsequent to said first processing, said first processing including setting the target pressure of the fuel in said storage section to a first pressure, pressurizing the fuel with said feed pump, and detecting a pressure of the fuel with said fuel pressure sensor, and said second processing including setting the target pressure of the fuel in said storage section to a second pressure lower than said first pressure, causing the fuel to be pressurized with said feed pump and reducing the pressure of the fuel by injection from said port injection valve of said internal combustion engine, and detecting a pressure of the fuel with said fuel pressure sensor. |
