Engine ignition control device

An engine ignition control device having a start-up ignition controller for controlling ignition at start-up of an engine started up using human power and a normal-running ignition controller for controlling ignition during normal running;

• the engine ignition control device comprising parameter detection means for detecting, as a rotational speed detection parameter including information of the rotational speed of the engine, the time required for a crankshaft to rotate through a certain crank angle section immediately before a start-up regular ignition position, the start-up regular ignition position being set to a position angularly advanced relative to a crank angle position equivalent to a top dead center of a piston of the engine;
• and start-up rotation angle detection means for detecting as a start-up rotation angle the rotation angle of the crankshaft of the engine from the time a start-up operation of the engine is initiated;
• wherein
• the start-up ignition controller is configured so that the engine is ignited at the regular ignition position when the parameter is less than a preset start-of-delaying-angle determination value, the engine is ignited at an ignition position delayed relative to the regular ignition position by an delaying angle amount that matches the magnitude of the parameter when the parameter is within a range equal to or greater than the start-of-delaying-angle determination value and equal to or less than a set end-of-delaying-angle determination value (greater than the start-of-delaying-angle determination value), and ignition of the engine is in the maximum delay angle position when the parameter has reached the end-of-delaying-angle determination value;
• and
• switching means is provided for switching the start-of-delaying-angle determination value and the end-of-delaying-angle determination value in accordance with the detected start-up rotation angle such that when the start-up rotation angle detected by the start-up rotation angle detection means at the regular ignition position is less than a set angle, there is created a kickback-preventive effect within a range at which engine startability is not compromised, and when the start-up rotation angle detected by the start-up rotation angle detection means at the regular ignition position is equal to or greater than the set angle, there is created a kickback-preventive effect that is greater than the kickback-preventive effect for when the start-up rotation angle is less than the set angle.

An engine ignition control device having a start-up ignition controller for controlling ignition at start-up of an engine started up using human power and a normal-running ignition controller for controlling ignition during normal running;

• the engine ignition control device comprising parameter detection means for detecting, as a rotational speed detection parameter including information of the rotational speed of the engine, the time required for a crankshaft to rotate through a certain crank angle section immediately before a start-up regular ignition position, the start-up regular ignition position being set to a position angularly advanced relative to a crank angle position equivalent to a top dead center of a piston of the engine, and start-up rotation angle detection means for detecting as a start-up rotation angle the rotation angle of the crankshaft of the engine from the time a start-up operation of the engine is initiated;
• wherein
• the start-up ignition controller is configured so that the engine is ignited at the regular ignition position when the parameter is less than a start-of-delaying-angle determination value, the engine is ignited at an ignition position delayed relative to the regular ignition position by an delaying angle amount that matches the magnitude of the parameter when the parameter is within a range equal to or greater than the start-of-delaying-angle determination value and equal to or less than a end-of-delaying-angle determination value (greater than the start-of-delaying-angle determination value), and the engine is ignited in the maximum delay angle position when the parameter has reached the end-of-delaying-angle determination value;
• and
• there is provided switching means for switching the regular ignition position and the maximum delay angle position in accordance with the detected start-up rotation angle such that when the start-up rotation angle detected by the start-up rotation angle detection means at the regular ignition position is less than a set angle, there is created a kickback-preventive effect within a range at which engine startability is not compromised, and when the start-up rotation angle detected by the start-up rotation angle detection means at the regular ignition position is equal to or greater than the set angle, there is created a kickback-preventive effect that is greater than the kickback-preventive effect for when the start-up rotation angle is less than the set angle.