Control device and control method for engine, engine starting device, and vehicle

A control method for an engine provided with a starter including a second gear that can be engaged with a first gear coupled to a crankshaft;

• an actuator causing, in a driven state, said second gear to be moved to a position where said second gear is engaged with said first gear;
• and a motor causing said second gear to be rotated,
• said engine being provided with a detection unit for detecting rotation of said crankshaft,
• said control method comprising:
• driving said actuator;
• determining whether said motor is driven;
• updating a value of a crank angle of said crankshaft based on a signal from said detection unit after said actuator is driven and said motor is determined to be driven;
• and
• inhibiting update of the value of the crank angle based on the signal from said detection unit when said actuator is driven and said motor is determined to be not driven,
• wherein update of the value of the crank angle is inhibited during a time period from a time when said actuator is driven and said motor is determined to be not driven until a time when said actuator is driven and said motor is determined to be driven.

A vehicle comprising:

• a starter including a second gear that can be engaged with a first gear coupled to a crankshaft, an actuator causing, in a driven state, said second gear to be moved to a position where said second gear is engaged with said first gear, and a motor causing said second gear to be rotated;
• a detection unit that detects rotation of said crankshaft;
• and
• a control device that controls said starter, wherein said control device updates a value of a crank angle of said crankshaft recognized by said control device based on a signal from said detection unit when said control device determines that said actuator is driven and said motor is driven,
• said control device inhibits update of the value of the crank angle based on the signal from said detection unit when said control device determines that said actuator is driven and said motor is not driven,
• said control device inhibits update of the value of the crank angle during a time period from a time when said control device determines that said actuator is driven and said motor is not driven until a time when said actuator is driven and said motor is driven.

A control device for an engine provided with a starter including a second gear that can be engaged with a first gear coupled to a crankshaft;

• an actuator causing, in a driven state, said second gear to be moved to a position where said second gear is engaged with said first gear;
• and a motor causing said second gear to be rotated, wherein
• said engine is provided with a detection unit that detects rotation of said crankshaft,
• said control device obtains and updates a crank angle of said crankshaft detected by said detection unit,
• said control device inhibits update of the crank angle during a time period from a time when said actuator is driven and said motor is not driven until a time when said actuator is driven and said motor is driven, and updates the crank angle after said actuator is driven and said motor is driven.

A control device for an engine provided with a starter including a second gear that can be engaged with a first gear coupled to a crankshaft;

• an actuator causing, in a driven state, said second gear to be moved to a position where said second gear is engaged with said first gear;
• and a motor causing said second gear to be rotated, wherein
• said engine is provided with a detection unit that detects rotation of said crankshaft,
• said control device obtains and updates a crank angle of said crankshaft detected by said detection unit,
• said motor is driven after said actuator is driven,
• said control device inhibits update of the crank angle during a time period from a time when said actuator is driven and said motor is not driven until a time when engagement between said first gear and said second gear is completed and said motor is driven, and updates the crank angle after engagement between said first gear and said second gear is completed and said motor is driven.