| 摘要 |
An arrangement for exhaust braking of a combustion engine (2) which is equipped with a turbo unit with at least one flow element in the form of a vane or rail (17, 27) settable in varying positions to control the flow of exhaust gases through the turbine (6). A bypass line (25) provided with an inlet aperture (25a) is connected to an exhaust passage (4a, 19, 20) at a location upstream of the flow element (17, 27). An outlet aperture (25b) is connected to the exhaust passage (21, 4b) at a location downstream of the flow element (17, 27). A throttle (26) in the bypass line. A control device (13, 18) places the flow element (17, 27) in a substantially closed position when an exhaust braking process is to be effected, so that a positive pressure occurs in the exhaust passage (4a, 19) at a location upstream of the flow element (17, 27), which positive pressure is defined by the throttle (26). |
