Injection control apparatus for diesel engine

An injection control apparatus for a diesel engine, comprising:

• an injector for injecting fuel which is accumulated under pressure toward a combustion chamber upon opening of a solenoid valve;
• an injector driver for supplying a current to an electromagnetic actuator which controls an opening operation and a closing operation of the solenoid valve;
• a state detection unit for detecting a state of an engine or a state of an ambient environment;
• a valve opening control unit for supplying, to the electromagnetic actuator, a first current for opening the solenoid valve;
• an opened-state maintaining control unit for supplying, to the electromagnetic actuator, a second current for maintaining the solenoid valve, which is opened by the valve opening control unit, continuously in an opened position;
• and
• a timing control unit for variably adjusting a period of time from a starting time of the valve opening control unit to a time when the opened-state maintaining control unit becomes active in place of the valve opening control unit, in accordance with a result of detection provided by the state detection unit,
• wherein the state detection unit includes a fuel temperature detection sensor, for measuring a temperature of fuel, and one or more selected from a group consisting of a water temperature gauge, a fuel pressure sensor, and a voltmeter,
• wherein the valve opening control unit includes one or more selected from a group consisting of a CPU, a CPU and the injector driver, and an engine control unit (ECU),
• wherein the opened-state maintaining control unit includes one or more selected from a group consisting of a CPU, a CPU and the injector driver, and an ECU, and
• wherein the timing control unit includes one or more selected from a group consisting of a CPU and an ECU.