| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device for a powertrain that smoothly switches fuels from gaseous hydrogen to gasoline while avoiding torque shocks and preventing emission control performance from lowering. <P>SOLUTION: The powertrain, comprising a combination of an engine using dual fuels of gasoline and hydrogen and a driving motor, is provided with: a means for controlling the amount of hydrogen or gasoline and the amount of air fed into engine cylinders so that during operation with hydrogen a lean air-fuel ratio is obtained and during operation with gasoline substantially stoichiometric air-fuel ratio is obtained; a means for throttling the throttle opening during the switching of fuels from hydrogen to gasoline; and a means for operating the driving motor to absorb torque fluctuation when torque correction by means of motor torque is effective for the torque fluctuation which occurs after the throttle opening is throttled until the amount of air is stabilized, and for gradually decreasing hydrogen down to zero and gradually increasing gasoline, which are fed into the cylinders of the engine, when torque correction is ineffective. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
