公开(公告)号：US20170204784A1

公开(公告)日：2017-07-20

申请号：US15327770

申请日：2015-07-15

Applicant: BorgWarner Inc.

Inventor： Fenton O'SHEA

IPC: F02B75/04 ,  F15B15/12 ,  F16C7/06

CPC classification number: F02B75/045 ,  F15B15/12 ,  F16C7/06

Abstract: An apparatus and method relating to a variable compression connecting rod system (10, 110) located in an internal combustion engine including a connecting rod (28, 128) having a piston-pin-receiving aperture defining a first longitudinal axis in a first end portion and a crank-pin-receiving aperture defining a second longitudinal axis in a second end portion (36), a hydraulically actuated eccentric rotor (52) rotatable about one of the first and second longitudinal axis in response to fluid pressure acting on expandable chambers (76a, 76b, 78a, 78b, 176a, 176b, 178a, 178b) defined between the rotor (52, 152) and the connecting rod (28, 128). A hydraulic actuation system (51, 151) including a fluid pressure actuated activation valve (58, 158), at least one check valve (62, 64), and a plurality of fluid passages (66, 66a, 66b, 66c, 66d, 166) in fluid communication with the expandable chambers (76a, 76b, 78a, 78b, 176a, 176b, 178a, 178b).

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。