JPS6338609U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a block diagram of an actuation timing control device for a valve actuation/stopping mechanism according to an embodiment of the present invention, Fig. 2 is a flowchart explaining various functions of the controller shown in Fig. 1, and Fig. 3 is a conventional one. This is a timing chart that explains when to stop and return valve operation. In the figure, 12 is an exhaust valve or an intake valve, 20 is a controller and a means for controlling the intake and exhaust valves based on Map 2 at low speed rotation, and 21 is a means for controlling the valve stop/return timing when closing the exhaust valve before the intake valve. Map 1 (Map 1) and 22 are stored so as to be followed by map 2 (Map 2) which is stored so that the valve stop/return timing is controlled simultaneously when the valve is closed, and 24 is a rotation speed detector.

Claims (1)

[Scope of utility model registration request] The valve stop/return timing is set in advance of the exhaust valve when the valve is closed.
It has a control means for controlling the intake and exhaust valves based on a map stored so as to cause the intake valve to move backward, and a map stored so as to simultaneously control the valve stop/return timing when the valve is closed. An operation timing control device for a valve operation stop mechanism, comprising means for controlling intake and exhaust valves based on the following.