| 摘要 |
<p>A throttle valve (15) is provided in the air intake system (11) of an engine (10), and gas fuel is injected to both the upstream side and the downstream side of the air intake system, with respect to the throttle valve (15), by a first injection valve (21) and a second injection valve (22), respectively. Gas fuel is supplied to the first injection valve (21) and the second injection valve (22) from a gas tank (32) through gas piping (31). A control unit (40) determines the magnitude of the flow rate of air to the engine (10) and, on the basis of the determined magnitude of the flow rate of air, controls the ratio between the amounts of fuel injection by the injection valves (21, 22).</p> |
