FIELD: engines and pumps.
SUBSTANCE: invention can be used in the internal combustion engines. Internal combustion engine timing gear comprises cylinder head (1) and two valves, central outlet plate valve (10) and intake ring valve (7). Both valves (7, 10) adjoin saddles of central (5) and annular (4) channels and are equipped with drives, return springs (14) and mechanisms of clearance adjustment. Inlet annular valve (7) surrounds annular bridge (6) and is equipped with mounting surfaces on outer and inner edges of ring (8) and two guide rods (9) attached to the ring. Cylinder head (1) is provided with central guide hole, guide holes by number of rods (9) of annular valve (7) and inlet channel (2). Inlet channel (2) is formed by two inlet (3) and annular (4) channels. External seating surface (15) of inlet valve (7) is located further from the beginning of annular channel (4), than its internal mounting surface (16).
EFFECT: possibility to increase engine compression degree due to reduction of inlet valve stroke.
1 cl, 3 dwg
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