Control device of fuel pump

A control device of a fuel pump for supplying fuel from a fuel tank to an internal combustion engine, the control device comprising:

• a fuel pump driver configured to control supply of electrical power to the fuel pump for driving the fuel pump;
• and
• an engine control unit configured to
• start and drive the fuel pump when an ignition switch configured to switch connection and disconnection of an electrical power source to the engine control unit is in an ON state and stop the fuel pump when the ignition switch is in an OFF state, thereby controlling the engine, and
• generate a drive control command value which is transmitted to the fuel pump driver such that operation of the fuel pump is controlled by the fuel pump driver based on the transmitted drive control command value,
• wherein the fuel pump driver is configured to drive the fuel pump by using a specific drive command value preset as the drive control command value when a communication interruption state in which transmission of the drive control command value is interrupted is detected, and
• wherein the stop state of the fuel pump is maintained even when the ignition switch is in the OFF state and the drive control command value is set to the specific drive command value, and the fuel pump is driven when the ignition switch is in the ON state and the drive control command value is the specific drive command value.