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公开(公告)号：US20200018383A1
公开(公告)日：2020-01-16
申请号：US16034626
申请日：2018-07-13
Applicant: BorgWarner Inc.
Inventor： XiaoJian Lu , Jun Song
Abstract: Provided are tensioners to tension a closed loop chain of a chain drive system. The tensioners can include a housing with an open end, an enclosed end opposite the open end including an inlet supply, a bore extending from the open end to an area directly above the inlet supply to form a housing seat, a movable sleeve formed in the housing bore having an open end adjacent the open end of the housing, a closed end in contact with the housing seat, a sleeve bore extending from the open end to the closed end and a controlled inlet formed through the closed end thereof, a hollow piston disposed in the sleeve bore and a spring disposed in the piston bore to apply a bias on the piston outward from the sleeve bore.
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2.发明申请公开(公告)号：US20180195583A1
公开(公告)日：2018-07-12
申请号：US15401206
申请日：2017-01-09
Applicant: BorgWarner Inc.
Inventor： XiaoJian Lu , Jun Song
CPC classification number: F16H7/08 , F16H7/18 , F16H2007/0872 , F16H2007/185
Abstract: A chain tensioner arm or chain guide includes a main body extending in a longitudinal direction and including side walls, each side wall defining a ledge. The main body has a first end including a first tab formed by a set of first grooves extending inwardly from the first end towards a center of the main body, and having a tab end. The tab end of the first tab includes a first protrusion extending away from the main body. The chain tensioner arm or chain guide also includes a shoe with a chain sliding surface on which the chain slides. The shoe includes a side protrusion extending in a longitudinal direction along each side of the shoe. The side protrusion fits into the ledge of the main body. Methods of assembling the tensioner arm or chain guide are also disclosed.
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公开(公告)号：US10527134B2
公开(公告)日：2020-01-07
申请号：US15401206
申请日：2017-01-09
Applicant: BorgWarner Inc.
Inventor： XiaoJian Lu , Jun Song
Abstract: A chain tensioner arm or chain guide includes a main body extending in a longitudinal direction and including side walls, each side wall defining a ledge. The main body has a first end including a first tab formed by a set of first grooves extending inwardly from the first end towards a center of the main body, and having a tab end. The tab end of the first tab includes a first protrusion extending away from the main body. The chain tensioner arm or chain guide also includes a shoe with a chain sliding surface on which the chain slides. The shoe includes a side protrusion extending in a longitudinal direction along each side of the shoe. The side protrusion fits into the ledge of the main body. Methods of assembling the tensioner arm or chain guide are also disclosed.
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公开(公告)号：US20190316657A1
公开(公告)日：2019-10-17
申请号：US16378873
申请日：2019-04-09
Applicant: BorgWarner Inc.
Inventor： Keith B. Cobb , Mark Patton , XiaoJian Lu , Kevin Todd , Dale N. Smith , Fabio Magni , Ron J. Mielbrecht , Glenn Swanson , Giuseppe Baddaria
Abstract: A sealed hydraulic tensioner includes a cylinder having a cylinder surface formed in a housing; a piston, received by the cylinder, having an inner surface forming a piston cavity and an outer surface that closely conforms in shape to the cylinder inhibiting the flow of fluid between the outer surface of the piston and the cylinder surface; a tensioner biasing member engaging the piston and the cylinder forcing the piston in an axial direction; a check valve regulating fluid flow between a high-pressure chamber and a low-pressure chamber; one or more apertures formed in the piston extending between the inner surface and the outer surface of the piston that communicate fluid between the piston cavity and the cylinder, wherein a substantially fixed quantity of fluid is encapsulated within the piston cavity and the cylinder.
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