Valve bridge assembly

Patent metadata

Field	Value
Publication number	US-10260382-B2
Application number	US-201615346773-A
Country	US
Kind code	B2
Filing date	Nov 9, 2016
Priority date	Jun 29, 2012
Publication date	Apr 16, 2019
Grant date	Apr 16, 2019

Abstract

A valve bridge assembly includes a valve bridge; a first cavity formed towards a first end portion of the valve bridge; and a hydraulic lash adjuster (HLA) disposed within the first cavity for engaging a first valve stem. The HLA includes a first contact surface for engaging the first valve stem. The first contact surface is curved.

First claim

The invention claimed is:

1. A valve bridge assembly for a valve train assembly, the valve bridge assembly comprising:
a valve bridge;
a first cavity formed towards a first end portion of the valve bridge;
a hydraulic lash adjuster (HLA) disposed within the first cavity configured to engage a first valve stem;
a second cavity formed towards a second end portion of the valve bridge that is opposite the first end portion of the valve bridge, the second cavity being configured to receive, at least in part, a second valve stem,
wherein the hydraulic lash adjuster is configured to compensate for valve lash between the hydraulic lash adjuster and the first valve stem and between the second cavity and the second valve stem,
wherein the HLA comprises a first contact surface configured to engage the first valve stem, and
wherein the first contact surface is curved.

2. The valve bridge assembly according to claim 1 , wherein the valve bridge assembly further comprises:
a second contact surface at the second end portion of the valve bridge configured to engage the second valve stem, wherein the second contact surface is curved.

3. The valve bridge assembly according to claim 2 , wherein the second curved contact surface is substantially part spherical.

4. The valve bridge assembly according to claim 1 , wherein the curved first contact surface is substantially part spherical.

5. A valve train assembly comprising the valve bridge assembly of claim 1 .

6. The valve train assembly according to claim 5 , further comprising a pivotally mounted first rocker arm configured to engage the valve bridge and to pivot in response to a rotating first cam to cause a first valve lift event in an engine cycle.

7. The valve train assembly according to claim 5 , wherein the first valve event is an engine brake valve event.

Assignees

• Eaton Intelligent Power Ltd

Inventors

• Cecur Majo

Classifications

• F01L1/25

  between cam and valve stem · CPC title

• F01L1/26

  characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder (with coaxial valves F01L1/28) · CPC title

• F01L13/06 Primary

  for braking · CPC title

• F01L1/2411 Primary

  by means of a hydraulic adjusting device located between the valve stem and rocker arm · CPC title

• F01L1/181

  Centre pivot rocking arms · CPC title