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公开(公告)号：US10738860B2
公开(公告)日：2020-08-11
申请号：US15714088
申请日：2017-09-25
Applicant: BorgWarner Inc.
Inventor： Mark M. Wigsten , Kevin B. Todd , Dale N. Smith , Sean R. Simmons , Seongdo Hong
IPC: F16H7/08
Abstract: A pressure regulator is in fluid communication with a supply inlet of a hydraulic tensioner to actively control fluid to the inlet of the hydraulic tensioner. By actively controlling the pressure regulator based on engine conditions and thus the oil pressure being fed to the hydraulic tensioner, the oil pressure to the hydraulic tensioner may be reduced at low engine speeds, increasing the efficiency of the timing system, or allowing full oil pressure at high engine speeds and low engine temperature.
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公开(公告)号：US11796040B2
公开(公告)日：2023-10-24
申请号：US17648488
申请日：2022-01-20
Applicant: BorgWarner Inc.
Inventor： Matthew W. Crump , Christopher Van Loon , Sean R. Simmons , Joseph P. Goodsell
CPC classification number: F16H7/08 , F16H7/06 , F16H7/18 , F16H2007/081 , F16H2007/0804 , F16H2007/0844 , F16H2007/0846 , F16H2007/0872 , F16H2007/0874
Abstract: A chain tensioning device which combats natural build-up of chain slack. In controlling the chain slack, the torque at which a chain jumps occurs is delayed resulting in a higher jump torque performance.
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公开(公告)号：US10094450B2
公开(公告)日：2018-10-09
申请号：US15504067
申请日：2015-08-18
Applicant: BorgWarner Inc.
Inventor： Sean R. Simmons , Simon Barrette
Abstract: A tensioner uses a low rate torsion spring in a first stage and a high rate torsion spring in a second stage to maintain tension in a chain or belt. The first stage is connected to the second stage by a torque coupling. The high rate torsion spring is maintained in an energized state between a ground and a dead stop to store energy and to provide tension under high loads. In some embodiments, the torque coupling is a damper. In other embodiments, the torque coupling is a clutch. A method stores energy in a high rate torsion spring of a tensioner.
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