摘要:
A lubricating system for a valve operating system (50a,50b) includes a valve operating system configured to reciprocate a valve (51a,51b) for substantially opening and closing a port (20a,20b) connected to a combustion chamber of an engine, and an ejecting device provided with an outlet (66a) from which a lubricating liquid is ejected. The valve operating system (50a,50b) includes a drive cam (24a,25a), a driven member (64) configured to contact the drive cam (24a,25a), a pivot member (61) which is attached to the driven member (64) and is configured to transmit movement of the driven member (64) to the valve (51a,51b), and a relative position changing device configured to change relative positions of the driven member (64) and the pivot member (61). The outlet of the ejecting device is oriented to face sliding surfaces (64b) of the driven member (64) and the drive cam (24a,25a) at least in a period which is a part of one rotation of the drive cam (24a,25a).
摘要:
A lubricating system for a valve operating system (50a,50b) includes a valve operating system configured to reciprocate a valve (51a,51b) for substantially opening and closing a port (20a,20b) connected to a combustion chamber of an engine, and an ejecting device provided with an outlet (66a) from which a lubricating liquid is ejected. The valve operating system (50a,50b) includes a drive cam (24a,25a), a driven member (64) configured to contact the drive cam (24a,25a), a pivot member (61) which is attached to the driven member (64) and is configured to transmit movement of the driven member (64) to the valve (51a,51b), and a relative position changing device configured to change relative positions of the driven member (64) and the pivot member (61). The outlet of the ejecting device is oriented to face sliding surfaces (64b) of the driven member (64) and the drive cam (24a,25a) at least in a period which is a part of one rotation of the drive cam (24a,25a).
摘要:
A motorcycle in which an engine (E) is disposed between a front wheel (2) and a rear wheel (3) and an exhaust pipe (22) for guiding exhaust gas emitted from the engine is extended forward relative to the engine (E), including an electric motor (11) that is disposed behind a cylinder portion of the engine (E) and is configured to apply a torque to a power transmission system including a crankshaft (16) of the engine.
摘要:
An engine E of the present invention comprises a valve body 53 configured to open and close ports 0A and 20B formed in a cylinder head 20, a drive cam mechanism 50A operable in association with a crankshaft by a driving power transmission mechanism 28, a pivot cam mechanism 48 which is configured to be pivoted according to movement of the drive cam mechanism 50A to cause the valve body 53 to open and close and is configured to change a pivot state to change a lift characteristic of the valve; and a servo motor 73 configured to change the pivot state of the pivot cam mechanism 48, wherein the servo motor 73 is positioned at one end portion of the pivot cam mechanism 48 such that the servo motor 73 is distant from the driving power transmission mechanism 28.
摘要:
A motorcycle in which an engine (E) is disposed between a front wheel (2) and a rear wheel (3) and an exhaust pipe (22) for guiding exhaust gas emitted from the engine is extended forward relative to the engine (E), including an electric motor (11) that is disposed behind a cylinder portion of the engine (E) and is configured to apply a torque to a power transmission system including a crankshaft (16) of the engine.
摘要:
A pivot cam mechanism included in a valve operating system (50a,50b) is configured such that a coupling pin (62) is supported at a pivot member (61) in a position closer to a camshaft (24,25) than a control shaft (60), and the pivot member (61) and the driven member (63) are integrally pivotable according to the rotation of the drive cam (24a) while changing relative attitudes of the driven member (63) and the pivot member (61). Positions and shapes of the drive cam (24a), the driven member (63), and the pivot member (61) are designed so that a valve maximum acceleration point at which an acceleration of a valve body (53) is maximum is located in a front part of a valve acceleration period in which the acceleration of the valve body (53) has a positive value while the drive cam (24a) is rotating once.