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公开(公告)号：US10526929B2
公开(公告)日：2020-01-07
申请号：US15271319
申请日：2016-09-21
Applicant: Progress Rail Locomotive Inc.
Inventor： Adarsh Gopinathan Nair , Laura E. Rasmussen
Abstract: A valvetrain for an engine includes a pair of valves that are disposed in a spaced apart relation to one another, and in which each of the valves has an elongated valve stem. The valvetrain further includes a valve bridge that is coupled to the pair of valves. The valve bridge is configured to define a pair of receptacles to at least partly receive the pair of valve stems therein. The valve bridge further defines a central recess that is located midway between the pair of receptacles and disposed in a co-planar relationship with the pair of receptacles.
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公开(公告)号：US10094250B2
公开(公告)日：2018-10-09
申请号：US15240552
申请日：2016-08-18
Applicant: Progress Rail Locomotive Inc.
Inventor： Adarsh Gopinathan Nair , Laura E. Rasmussen
Abstract: A valve bridge is disclosed for use with an internal combustion engine. The valve bridge may include a body with a central cavity formed in a center portion of the body for receiving a hydraulic lash adjuster, and opposing first and second lateral extensions on opposite sides of the central cavity. The valve bridge may further include a first bore in the first extension for receiving a first valve stem, and a second bore in the second extension for receiving a second valve stem. The valve bridge may also include a first internal groove in a wall of the central cavity configured to receive fluid, as well as a first internal passage in the body that extends from the first internal groove toward the first bore. In addition, the first internal passage may extend from a higher gravitational point within the body to a lower gravitational point within the body.
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