| 摘要 |
PROBLEM TO BE SOLVED: To set an injection amount of gas fuel for keeping satisfactory driving state when pressure and temperature of the gas fuel are varied according to driving environment or conditions of an engine. SOLUTION: This type of control device has a basic pulse width computation means 21 of gas fuel, a fuel state pulse correction value computation means 28, an air-fuel ratio correction value computation means 25, and an injection pulse width computation means 22 which corrects the basic injection pulse width based on the corrected values. The fuel state pulse correction value computation means has a fuel state value calculation means 27 which recognizes the temperature and/or pressure of the gas fuel as a fuel state value, and a pulse width correction value calculation means 28 which performs calculation based on the fuel state value. A fuel system abnormality state determination means 32 is arranged for varying the fuel state pulse width correction value based on the calculation results from a fixed fuel state value calculation means 30 and a fixed pulse width correction value calculation means 31 at the time of abnormality of a fuel system, and outputting the values to the injection pulse width computation means.
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