| 摘要 |
A fuel supply apparatus applied to an internal combustion engine (1) which can be operated by gasoline and CNG, wherein the fuel supply apparatus comprises a fuel supply system (18) which supplies separately the gasoline and the CNG to the internal combustion engine (1) and an exhaust gas purifying catalyst (11,12) which purifies exhaust gas discharged from the internal combustion engine (1). It is determined whether or not an exhaust gas purifying performance of the exhaust gas purifying catalyst (11, 12) is deteriorated, and when it is determined that the exhaust gas purifying performance is deteriorated, the operation of the fuel supply system (18) is controlled so that the CNG is supplied to the internal combustion engine (1).
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