Cam follower assembly having swaged bushing

A cam follower and bushing technology, applied in the direction of cam follower, toothed components, manufacturing tools, etc., can solve the problems of expensive, deformation, excessive wear, etc.

Inactive Publication Date: 2015-07-15
ELECTRO-MOTIVE DIESEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, deformation caused by forged lock roller shafts can cause excessive wear and may require replacement of the roller shafts
In some cases this replacement can be expensive
Also, forged locking ends of roller shafts may not completely prevent axial movement of rolling elements and / or rollers
Axial movement of the rolling elements and / or rollers can cause the rollers to lock against the roller retainer, thereby causing premature wear and / or failure of the rollers

Method used

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  • Cam follower assembly having swaged bushing
  • Cam follower assembly having swaged bushing
  • Cam follower assembly having swaged bushing

Examples

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Embodiment Construction

[0013] figure 1 An exemplary engine 10 is shown. For purposes of disclosure, engine 10 is depicted and described as a two-stroke diesel engine. However, those skilled in the art will recognize that engine 10 may be any other type of internal combustion engine, such as a two-stroke or four-stroke gasoline engine or an engine powered by gaseous fuels.

[0014] Engine 10 may include an engine block 14 at least partially defining a plurality of cylinders 16 . A piston 18 may be slidably disposed within each cylinder 16 to reciprocate between a top dead center position and a bottom dead center position, and a cylinder head 20 may be associated with each cylinder 16 . Each cylinder 16 , piston 18 and cylinder head 20 may collectively at least partially define a combustion chamber 28 . A fuel injector assembly 36 may be disposed at least partially within each cylinder head 20 and configured to inject fuel into each respective combustion chamber 28 to support combustion of fuel wit...

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PUM

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Abstract

A cam follower assembly is disclosed. The cam follower assembly may include a forked body having a main bore, and a cam roller disposed within the main bore. The cam roller may include a hollow and generally cylindrical body having an outer surface configured to engage a camshaft. The cam follower assembly may also include a bushing having a generally cylindrical body having an outer surface configured to be press-fitted with the cam roller, a central bore formed within the generally cylindrical body of the bushing, and at least one swaged end configured to inhibit axial movement of the bushing. The cam follower assembly may further include an inner race disposed within the central bore of the bushing and configured to rotatably support the bushing.

Description

technical field [0001] The present invention relates generally to cam follower assemblies, and more particularly to cam follower assemblies having forged sleeves. Background technique [0002] Fuel injectors in internal combustion engines are typically driven by cam gear operatively connected to the engine's crankshaft. Rotation of the crankshaft causes corresponding rotation of a cam that drives one or more cam followers. Movement of the cam follower causes actuation of the fuel injector. The shape of the cam governs the timing and duration of fuel injection. Each cam follower may include, inter alia, a roller in contact with the cam, and a sleeve rotatably supporting the roller. [0003] An exemplary cam follower is disclosed in US Patent No. 7,703,984, issued April 27, 2010 to Watanabe et al. (the "'984 patent"). Specifically, the '984 patent discloses a rocker arm operatively connected at a first end to a valve and at a second end to a cam. At the second end, the ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/06
CPCF16B4/004F16H53/06Y10T74/2107
Inventor T·J·保尔森S·M·贝德纳茨
Owner ELECTRO-MOTIVE DIESEL
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