Engine control unit, engine control system and engine control method

摘要

An engine control method includes: a step of determining whether or not a crank angle of the engine lies in a first section between a top dead center in a compression stroke and a first angle in a case where the engine speed of the engine is lower than the prescribed engine speed; a step of running the engine in a forward direction by driving a motor that applies a torque to a crank of the engine in the forward direction in a case where the crank angle of the engine does not lie in the first section; a step of determining whether or not the crank angle of the engine lies in the first section; a step of determining whether or not the crank angle of the engine lies in a second section between a top dead center in a combustion stroke and a second angle; a step of braking the motor in a case where it is determined in the sixth step that the crank angle of the engine lies in the second section; and a step of running the engine in the forward direction by driving the motor in the forward direction in a case where it is determined in the eighth step that there is the request for restart of the engine.

主权项

1. An engine control method of controlling driving of an engine, comprising:
a first step of determining whether or not an engine speed of the engine is lower than a preset, prescribed engine speed; a second step of determining whether or not a crank angle of the engine lies in a first section between a top dead center in a compression stroke and a first angle in a case where the engine speed of the engine is lower than the prescribed engine speed; a third step of running the engine in a forward direction by driving a motor that applies a torque to a crank of the engine in the forward direction in a case where the crank angle of the engine does not lie in the first section; a fourth step of determining whether or not the crank angle of the engine lies in the first section, after the third step; a fifth step of removing any load from the motor in a case where it is determined in the fourth step that the crank angle of the engine lies in the first section; a sixth step of determining whether or not the crank angle of the engine lies in a second section between a top dead center and a second angle in a combustion stroke, after the fifth step; a seventh step of braking the motor in a case where it is determined in the sixth step that the crank angle of the engine lies in the second section; an eighth step of determining whether or not there is a request for restart of the engine, after the seventh step; and a ninth step of running the engine in the forward direction by driving the motor in the forward direction in a case where it is determined in the eighth step that there is the request for restart of the engine.