TH146741A - engine - Google Patents

Abstract

DC60 (11/05/60) The actuator shifts the position of the main portion of the shift pin between the first and second positions by applying pressure to the main portion of the shift pin in the axial direction of the camshaft. At least a portion of the main portion of the shift pin overlaps the cylinder head cover when viewed from the axial direction of the camshaft. The actuator is positioned on the opposite side of the camshaft chain housing relative to the camshaft in the axial direction. The actuator is mounted outside the engine. The actuator is positioned more towards the cylinder head cover side than the end of the cylinder head.

Claims (1)

1. Revised 11/5/2017 1. The engine (1), which is a single-cylinder engine, consists of the cylinder block (5), cylinder head (6), including the combustion chamber (11) and camshaft chamber (16), arranged in The direction perpendicular to the cylinder axis (Ax1) of the cylinder body (5) for the combustion chamber (11), in which the cylinder head (6) is attached to the cylinder body (5), the valve cover (7), including the end (701), is arranged to face the end (601) of the cylinder head (6), in which the valve cover (7) is attached to the cylinder head (6). The cam chain (15) is arranged in the cam chain chamber (16). The camshaft (14) is connected to the cam chain (15), in which the camshaft (14) is supported by the cylinder head (6). The rocker arm (33) is supported by the cylinder head (6), in which the rocker arm (33) is parallel to the camshaft (14). The first valve rocker arm (36) is supported by the rocker arm (33). The second valve rocker arm (37) is supported by the rocker arm (33), in which the second valve rocker arm (37) is attached to the cylinder head (6). The main body of the shift pin (35) is arranged to move in the axial direction of the camshaft (14), where the main body of the shift pin (35) is arranged to move between position one where the first valve rocker arm (36) and the second valve rocker arm (37) are connected, and position two where the first valve rocker arm (36) and the second valve rocker arm (37) are not connected, where the main body of the shift pin (35) is arranged to swing together with the first valve rocker arm (36) and the second valve rocker arm (37) at position one, and the actuator (39) is arranged to shift the position of the main body of the shift pin (35) between position one and position two by applying pressure. The main part of the camshaft (35) is positioned in the axial direction of the camshaft (14), with at least part of the main part of the camshaft (35) overlapping the cylinder head cover (7) when viewed from the axial direction of the camshaft (14). The actuator (39) is positioned on the opposite side to the cam chain housing (16) for the camshaft (14). In the axial direction of the camshaft (14), the actuator (39) is positioned outside the engine (1), which is characterized by the actuator (39) being positioned more towards the cylinder head cover side than towards the end (601) of the cylinder head (6).