| 摘要 |
PROBLEM TO BE SOLVED: To effectively utilize gaseous fuel in a fuel storage vessel. SOLUTION: A fuel supply control device is provided with a fuel injection valve to inject gaseous fuel directly in a cylinder. When a gaseous fuel pressure P is higher than a lower limit pressure PLMT, a set pressure PR of a regulator is set to a high set pressure PH, fuel injection is effected in a compression stroke, an overlap period is present, and a set temperature TTHW of a cooling water switch valve is set to a high set temperature TH. When the gaseous fuel pressure P gets lower than the lower limit PLMT, the set pressure PR of the regulator is switched to the lower set pressure PL, fuel injection is effected in a suction stroke, an ignition timing is delayed than that when injection is effected in a compression stroke, an overlap period is set to zero, and the set temperature TTHW of the cooling water switching valve is switched to a lower set temperature TL. COPYRIGHT: (C)2004,JPO
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