| 摘要 |
The invention relates to a control arrangement for an inlet valve in a piston engine adapted between a cam device (5) of a camshaft (4) of the engine (1) and an inlet valve mechanism (6) arranged to open and close the inlet valve (3) in association with a cylinder of the engine. The control arrangement (7) comprises a body part (8), in which a piston device (9) is movably arranged to be in force transmission connection with the cam device (5) and the valve mechanism (6), and a guide member (10) arranged in the body part (8) between the cam device (5) and the piston device (9) to be movably responsive with the movements of the cam device (5). The body part (8) and the piston device (9) define together a first chamber (13), into which hydraulic medium can be selectively fed. The flow of hydraulic medium out from the first chamber (13) is controlled for providing a delay in the closing of the inlet valve (3). The control means for controlling the releasing of pressure in the first chamber (13) include a bevel control surface (19a;25a;25'a;29a) arranged for changing the timing of the releasing of pressure in the first chamber (13). |
