| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection control device of an internal combustion engine which can prevent deteriorations in performance and emission even when CO<SB>2</SB>mixed in a fuel tank is phase-changed. SOLUTION: The device includes a fuel tank for storing fuel containing CNG and CO<SB>2</SB>, a fuel injection valve, a temperature sensor for detecting temperature of fuel stored in the fuel tank and a pressure sensor for detecting pressure of fuel stored in the fuel tank. A phase change of CO<SB>2</SB>is determined on the basis of the temperature and pressure (Step 120). When CO<SB>2</SB>is phase-changed from liquid to gas, setting of a fuel injection amount is changed to a second injection amount larger than a first injection amount achieving a target air-fuel ratio by injecting CNG only (Step 170). Fuel is injected to the fuel injection valve on the basis of a set fuel injection amount. COPYRIGHT: (C)2011,JPO&INPIT
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