Cam rocker lever for operating valves

Patent metadata

Field	Value
Publication number	US-9518483-B2
Application number	US-201514753739-A
Country	US
Kind code	B2
Filing date	Jun 29, 2015
Priority date	Jun 30, 2014
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

A cam rocker lever comprises an annular piece with an inner diameter, a cam lobe, a first linear portion, and a second linear portion. The cam lobe is disposed within the inner diameter of the annular piece. The first linear portion extends from a first side of the annular piece, and a second linear portion extends from a second side of the annular piece opposite the first side. The first linear portion is configured to connect to a stem of a valve such that the valve is displaced when the first linear portion is displaced.

First claim

What is claimed is:

1. A cam rocker lever comprising:
an annular piece with an inner diameter;
a cam lobe disposed within the inner diameter of the annular piece;
a first linear portion extending from a first side of the annular piece; and
a second linear portion extending from a second side of the annular piece opposite the first side, wherein the first linear portion is configured to connect to a stem of a valve such that the valve is displaced when the first linear portion is displaced.

2. The cam rocker lever of claim 1 , wherein the cam lobe is configured to rotate within the annular piece and contact an inner surface of the annular piece, the rotation of the cam lobe causing the first linear portion to displace relative to the valve to open the valve.

3. The cam rocker lever of claim 1 , wherein a longitudinal length of the first linear portion is different than a longitudinal length of the second linear portion.

4. The cam rocker lever of claim 1 , wherein a longitudinal length of the first linear portion is equal to a longitudinal length of the second linear portion.

5. The cam rocker lever of claim 1 , further comprising:
a connector coupled to an end of the second linear portion, the connector anchoring the cam rocker lever to a surface.

6. The cam rocker lever of claim 5 , wherein the surface includes a camshaft gear.

7. The cam rocker lever of claim 1 , wherein the cam lobe is coupled to a cam shaft, the cam shaft facilitating rotation of the cam lobe.

8. An apparatus, comprising:
an internal combustion engine, including:
a piston positioned within a cylinder; and
at least one opening defined on a sidewall of the cylinder;

a valve operatively coupled to the opening, the valve including a valve stem positioned distal from the opening and a valve head positioned proximal to the opening; and
cam rocker lever operatively coupled to the valve, the cam rocker lever including:
an annular piece with an inner diameter;

a cam lobe disposed within the inner diameter of the annular piece;
a first linear portion extending from a first side of the annular piece; and
a second linear portion extending from a second side of the annular piece opposite the first side, wherein the first linear portion is communicatively coupled to a stem of the valve such that the valve is displaced when the first linear portion is displaced.

9. The apparatus of claim 8 , wherein the cam lobe is configured to rotate within the annular piece and contact an inner surface of the annular piece, the rotation of the cam lobe causing the first linear portion to displace relative to the valve to move the valve head distal to the opening so as to allow fluid communication through the opening.

10. The apparatus of claim 9 , wherein a valve spring is communicatively connected to the valve, the valve spring configured to urge the valve head towards the opening so as to prevent fluid communication through the opening.

11. The apparatus of claim 8 , wherein a longitudinal length of the first linear portion is different than a longitudinal length of the second linear portion.

12. The apparatus of claim 8 , wherein a longitudinal length of the first linear portion is equal to a longitudinal length of the second linear portion.

13. The apparatus of claim 8 , further comprising:
a connector coupled to an end of the second linear portion, the connector anchoring the cam rocker lever to the sidewall of the engine.

14. The apparatus of claim 8 , wherein the cam lobe is coupled to a cam shaft, the cam shaft facilitating rotation of the cam lobe.

Assignees

• Cummins Inc

Inventors

• Jones John Peter

Classifications

• F01L1/30

  characterised by the provision of positively opened and closed valves, i.e. desmodromic valves · CPC title

• F01L1/185 Primary

  Overhead end-pivot rocking arms · CPC title

• F01L1/026

  Gear drive · CPC title

• F01L1/047

  Camshafts · CPC title

• F01L3/085

  Valve cages · CPC title