公开(公告)号：US20160033016A1

公开(公告)日：2016-02-04

申请号：US14772078

申请日：2014-03-06

Applicant: BORGWARNER INC.

Inventor： Kevin B. TODD ,  Dale N. Smith ,  Robert G Williamson ,  Fenton O'SHEA

IPC: F16H7/08

CPC classification number: F16H7/0836 ,  F02B67/06 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0859 ,  F16H2007/0893

Abstract: A tensioner for tensioning a chain or belt span which uses two pistons. The movement of the two pistons may be coupled together. The first piston provides damping to the chain span and a second piston provides variable, dominant and automatically adjusting spring force to the chain span. The tensioner automatically adjusts the mean tension force to keep the chain or belt tension as low as possible without sacrificing chain or belt control, significantly improving drive efficiency at new chain or belt conditions and conditions with dynamic loads.

Abstract translation: 用于张紧使用两个活塞的链条或皮带跨度的张紧器。 两个活塞的运动可以联接在一起。 第一活塞为链跨提供阻尼，第二活塞为链跨提供可变的，主导的和自动调节的弹力。 张紧器自动调节平均张力，以保持链条或皮带张力尽可能低，而不会牺牲链条或皮带控制，显着提高新链条或皮带条件和动态载荷条件下的驱动效率。

公开(公告)号：US20180363753A1

公开(公告)日：2018-12-20

申请号：US16060432

申请日：2016-12-01

Applicant: BorgWarner Inc.

Inventor： Kevin B. TODD

IPC: F16H55/30

Abstract: A non-prevalent order random sprocket for an internal combustion engine comprising a pattern of pitch radii, such that the radial variation of the pitch radii excite tensions at non-prevalent orders in a drive system of the internal combustion engine.

公开(公告)号：US20190234494A1

公开(公告)日：2019-08-01

申请号：US16262999

申请日：2019-01-31

Applicant: BorgWarner Inc.

Inventor： Keith B. COBB ,  Kevin B. TODD ,  Robert G. WILLIAMSON

IPC: F16H7/08 ,  F01L1/02

CPC classification number: F16H7/0836 ,  F01L1/022 ,  F16H2007/0806 ,  F16H2007/0812 ,  F16H2007/0846 ,  F16H2007/0891

Abstract: In order to prevent noise, a ratchet clip and grooves for the ratchet clip to engage are added to the second piston, such that the second piston cannot hit the bottom of the second bore housing. The second piston is prevented from hitting the bottom of the second bore housing by the ratchet clip engaging the ratchet grooves on the outer circumference of the second piston.

公开(公告)号：US20180094709A1

公开(公告)日：2018-04-05

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.