Diesel engine starting device and starting method

A starting device for a diesel engine that has a no idling function to stop fuel injection when a predetermined automatic stop condition is met, the starting device comprising:

• a plurality of fuel injection units configured to directly inject fuel in a plurality of cylinders of the diesel engine, respectively;
• a plurality of glow plugs configured to generate heat upon receiving electricity to increase temperature of the cylinders of the diesel engine, respectively;
• a starter motor configured to be driven to cause a crankshaft to rotate when the diesel engine starts running;
• and
• a control unit configured to control the fuel injection of the fuel injection units, electricity feeding to the glow plugs, and activation of the starter motor,
• the control unit being configured to stop a piston of a predetermined cylinder among the plurality of cylinders at a bottom dead center of a compression stroke when the no idling function is performed, and start the electricity feeding to the glow plug of the predetermined cylinder, the control unit being also configured to drive the starter motor to cause the piston of the predetermined cylinder to move upward from the bottom dead center of the compression stroke, and cause the fuel injection unit of the predetermined cylinder to finely inject the fuel in the predetermined cylinder in multiple injection stages, when the predetermined automatic stop condition is no longer met and the diesel engine is restarted, and the control unit being also configured to cause the fuel injection unit of the predetermined cylinder to inject a small amount of fuel for ignition immediately before the piston of the predetermined cylinder reaches a top dead center.