Control device for high-pressure fuel pump

A control device for controlling a high-pressure fuel pump (103) is provided with a plunger operation determination unit (801), a fuel pressure increase evaluation unit (802), a valve closing determination unit (803), and a discharge amount control unit (804) for controlling the discharge amount of fuel by controlling the timing for starting the application of current to a solenoid (205) on the basis of a target fuel pressure and a fuel pressure measured by a fuel pressure sensor (401). The discharge amount control unit (804) determines the control gain of the current application start timing on the basis of the determination result of the valve closing determination unit (803). 控制高压燃料泵(103)的控制装置包括：柱塞动作判定部(801)、燃料压力上升评价部(802)、闭阀判定部(803)和排出量控制部(804)，该排出量控制部(804)基于燃料压力传感器(401)测量的燃料压力和目标燃料压力，控制向螺线管(205)的电流施加开始定时，由此控制燃料的排出量，排出量控制部(804)根据闭阀判定部(803)的判定结果决定电流施加开始定时的控制增益。