GASEOUS FUEL ENGINE CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a gaseous fuel engine control device capable of avoiding an erroneous determination about a residual amount of fuel while assuring a combustion stability.SOLUTION: A gaseous fuel engine control device for reducing pressure of hydrogen in a hydrogen tank with a regulator 109 and supplying it to an engine 10 comprises a pressure sensor 110 for detecting a pressure of hydrogen after its pressure is reduced by the regulator 109; a fuel injection executing part 100a for setting an injection pulse width on the basis of a requisite fuel injection amount set on the basis of a vehicle running state and a pressure detected by the pressure sensor 110 and executing the fuel injection with the injection pulse width with a maximum injection pulse width set on the basis of a predetermined combustion stability limit until a predetermined waiting period elapses being applied as an upper limit when the pressure detected by the pressure sensor 110 is lower than the predetermined threshold; and a determination part 100b judging that a residual amount of hydrogen in the hydrogen tank is reduced less than the predetermined reference residual amount when the pressure detected by the pressure sensor 110 is lower than the threshold also after the waiting period elapses.SELECTED DRAWING: Figure 2