Hydraulic auto-tensioner with double seal ring
A hydraulic, tensioner technology used in transmissions, valve drives, engine components, etc. to address the effects of automatic tensioner efficiency and performance characteristics, scratches and streaks on the plunger and housing plunger holes , high cost of structural design, etc., to achieve the effect of reducing the leakage trend, reducing the bonding trend and improving the guiding characteristics
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[0022] figure 1 A hydraulic self-contained automatic tensioner 1 is shown for a timing chain drive or an auxiliary unit drive of an internal combustion engine, the tensioner 1 comprising a hollow cylindrical housing 2 in which a tensioning plunger 3 is held The guidance is such that it is longitudinally displaceable along the axis A in the plunger bore 4 of the housing. The tensioning plunger 3 comprises a plunger bottom 5 through which the tensioning plunger 3 is guided in the plunger hole 4 and the plunger rod 6 follows said plunger bottom 5 across in the direction of tensioning and extension. At the end face of the housing 2 on the tensioning side of the hydraulic tensioner 1 , a pretensioning can be applied to the adjoining chain drive. On the installation side of the hydraulic tensioner 1, that is, on the side facing away from the tensioning side, an end plug 7 is arranged in an opening on the end face of the hollow cylindrical shell 2, and the end plug 7 passes through ...
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