FIELD: engine building.
SUBSTANCE: invention can be used in engine timing mechanisms. Force transfer mechanism (10), in particular, rocker arm or swinging lever, is intended for creation of kinematic connection between camshaft and valve (12) of gas distribution mechanism, in particular, inlet valve of internal combustion engine. Mechanism includes main housing (14), control piston (20), contact element (28), first hydraulic locking piston (22), second hydraulic locking piston (24), damping chamber (35), stop (46) and valve clearance adjustment device (26). Main body (14) has cylindrical seat (16) extending along longitudinal axis (A). Control hydraulic piston (20) is made with possibility of back-and-forth movement between the first and second positions along longitudinal axis (A) in seat (16). Contact element (28) is intended for actuation of valve (12) of gas distribution mechanism. Valve (12) is kinematically connected to control piston (20) so that movement of control piston (20) along longitudinal axis (A) actuates contact element (28) along longitudinal axis (A), which changes valve (12) stroke. Hydraulic locking piston (22) is configured to reciprocate radially relative to longitudinal axis (A) between a third position in which first locking piston (22) locks control piston (20) in its first position, and a fourth position, wherein first locking piston (22) allows control piston (20) to move between its first and second positions inside seat (16). Damping chamber (35) is filled with control fluid and when control piston (20) is moved from the first position to the second one, it is emptied to damp movement of control piston (20). Damping chamber (35) is limited by control piston (20) and seat (16). Anti-rotation lock (46) prevents rotation of the first locking piston (22) and/or the second locking piston (24). Hydraulic or mechanical valve clearance adjustment device (26) is kinematically connected to control piston (20) and contact element (28) and is made to compensate for the gap between the valve and contact element (28). Application of force transfer mechanism and vehicle are disclosed.
EFFECT: higher reliability and simplified design.
12 cl, 11 dwg
Title | Year | Author | Number |
---|---|---|---|
FORCE TRANSFER MECHANISM FOR ADJUSTABLE VALVE DRIVE | 2018 |
|
RU2774013C2 |
ADJUSTABLE VALVE DRIVE WITH SYSTEM OF CAMS WITH ADJUSTABLE POSITION FOR INTERNAL COMBUSTION ENGINE | 2019 |
|
RU2778596C2 |
INTERNAL COMBUSTION ENGINE VALVE-ACTUATING GEAR CONTROL MECHANISM | 1999 |
|
RU2156867C1 |
TIMING MECHANISM | 2002 |
|
RU2208173C1 |
INTERNAL COMBUSTION ENGINE TIMING GEAR VALVE CONTROL MECHANISM | 1999 |
|
RU2153586C1 |
ACTUATING MECHANISM AND VALVE SYSTEM HAVING SAID ACTUATING MECHANISM | 2009 |
|
RU2548137C1 |
ICE CAM GEAR DRIVE AND VALVE TRAVEL SPEED CONTROL METHOD | 2004 |
|
RU2338075C2 |
DEVICE FOR DAMPING STRETCHING AND CONTRACTING FORCES | 2010 |
|
RU2449911C1 |
INTERNAL COMBUSTION ENGINE EQUIPPED WITH MOTOR BRAKE ASSEMBLY | 2010 |
|
RU2451795C1 |
VALVE TIMING PHASE ADJUSTER | 2002 |
|
RU2284419C2 |
Authors
Dates
2022-03-17—Published
2018-06-20—Filed