| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel control device of an internal combustion engine for a bi-fuel vehicle capable of preventing the seizure and degradation of component of a gasoline fuel system without degrading emission or fuel consumption at start of engine, applicable to a high compressing ratio engine optimized to gas fuel, and capable of improving an output under a high load. SOLUTION: When it is determined that the engine is not in a high load range (a gasoline injection range) like at start of engine (NO in Step S10), only CNG is fed to the engine (Step S40). The degradation of emission and fuel consumption at start of engine can thus be avoided. When it is determined that the engine is in a high load range and there is gasoline (YES in both Step S10 and Step S20), a small amount of gasoline is auxiliarily fed to the engine (Step S30). The seizure and degradation of the component of the gasoline fuel system can thus be prevented. COPYRIGHT: (C)2003,JPO |
