TH88367A - Controller for single-cylinder four-stroke engines - Google Patents

Abstract

In a single-cylinder four-stroke engine (10), the rotational speed is uneven, while the crankshaft (19) is rotated one time (T30) required to rotate the crankshaft (19) to the crank angle. Listed will be different for each beat. Especially The tendency to change in timing (T30) required for rotation is different for each stroke. The timing (T30) for the number of crank angles Cn = 8, 9 is obtained (steps S104, S107) and speed. The time difference (Delta T30) between the different intervals (T30) required for the rotation is calculated (step S109). Subsequently, the time difference (Delta T30) is compared with The previously decided K1 and K2 cadence value (procedure S110, 113) to determine the current timing (step S111, S114) in a single-cylinder four-stroke engine ( 10) The rotational speed is uneven while the crankshaft (19) is rotated one time (T30) required to rotate the crankshaft (19) to the crank angle at Listed will be different for each beat. Especially The tendency to change in timing (T30) required for rotation is different for each stroke. The timing (T30) for the number of crank angles Cn = 8, 9 is obtained (steps S104, S107) and speed. The time difference ((formula) T30) between the different (T30) periods required for rotation is calculated (step S109). Later, the time difference ((formula) T30) is compared with The values for determining the timing K1 and K2 previously decided (steps S110, 113) to determine the current timing (steps S111, S114).

Claims (4)

Disclaimers (all) that will not appear on the advertisement page: 1. A controller for a single-cylinder four-stroke engine (10), which rotates the crankshaft (19) by moving the piston back and forth (17) in the cylinder to increase and decrease the volume of the cylinder (200). Know the crank angle (22) that outputs a rotation detection signal every time the crankshaft (19) is rotated at a predetermined angle, calculated trajectory (30) for calculating the required interval to the crankshaft (19). ) Is the crank angle at Preset at the reference angle position on the crankshaft based on the signal output from the crank angle detector (22), where the reference angle position is the angle position within the interval during which the cylinder volume (200) is added. It is established by a piston and a designated path (30) for making timing decisions based on consecutive intervals. Respectively, two spans required for rotation. Which is calculated by means of computation within the interval between The volume of the cylinders (200) has been increased. 2. Controller for a single-cylinder four-stroke engine in accordance with claim 1, where the method is determined. It is compared with the difference between the two consecutive consecutive periods required for the rotation, calculated by means of a calculated path, with the reference value in the determination that was previously determined to determine. Set the pace at which the rhythm occurs at that moment. 3. Controller for a single-cylinder four-stroke engine according to claim 1, where when the speed of The engine rotation is outside the preset range from the predetermined rotation speed. When the engine is started, the timing decision is not performed. 4. Controller for a single-cylinder four-stroke engine in accordance with claim 1, where the method is determined. Will set a fixed result received every time the crankshaft is rotated one turn as a temporary result and Determine the result of the decision determined when the specified number of transient results have been consistently obtained.