Valve drive of internal combustion engine, guides path for restricted flow of hydraulic fluid towards specific end of drag lever indirectly between underside of lock nut and top of drag lever

摘要

The valve drive (1) has drag lever (2) that is connected to support (4) on cylinder head (5) of engine, using locking bolt (3). A specific end (7) of drag lever is provided with gas exchange valve, whereas other end (13) is passed via bore hole in locking bolt. A central region (9) in top (10) of drag lever is provided with cam counter-rotating portion (11). A counter nut (15) is screwed on top of drag lever, and path (17) for restricted flow of hydraulic fluid is guided towards end (7) of drag lever indirectly between underside (20) of lock nut and top of drag lever.