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Connecting rod bolts with locating features

A technology of bolts and connecting rods, applied in the direction of screws, connecting components, threaded fasteners, etc., can solve problems such as bolt failure

Active Publication Date: 2016-06-08
ELECTRO-MOTIVE DIESEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Over time, the bolts of the '587 patent can still fail due to fretting wear and subsequent crack formation

Method used

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  • Connecting rod bolts with locating features
  • Connecting rod bolts with locating features
  • Connecting rod bolts with locating features

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] figure 1 Engine 102 is shown. engine 102 in figure 1 Depicted in and described herein as a diesel fueled internal combustion engine. However, it is contemplated that engine 102 may embody any other type of internal combustion engine, such as an engine powered by gasoline or gaseous fuel. It is contemplated that engine 102 may include any number of combustion chambers, which may be arranged in an "inline" configuration, a "V" configuration, or any other conventional configuration.

[0015] The engine 102 may include an engine block 104 at least partially defining a cylinder 108 and a cylinder liner 110 disposed within the cylinder 108 . A combustion chamber 112 may be formed within the cylinder liner 110 , and a piston 111 may be disposed to reciprocate in the combustion chamber 112 . Engine block 104 may also include combustion intake ports (not shown), air scavenging passages (not shown), and exhaust ports (not shown) that may communicate with combustion chamber 11...

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PUM

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Abstract

The invention provides a linkage bolt (123) for use with a linkage assembly (118). The connecting rod bolt may have a body (303) having a first end (302), a threaded second end (304) opposite the first end, and An outer surface (305) extending lengthwise from the end to the second end. The link bolt may also include a plurality of locating features (402, 502) having radii substantially aligned with the outer surface, and a plurality of gaps disposed on the outer surface between adjacent locating features Features (404, 504), wherein a distance from a center of the body to an outer surface of each clearance feature is smaller than a radius of the plurality of locating features. The link bolt may also have a head (212) connected to the first end of the body.

Description

technical field [0001] The present invention relates generally to connecting rod bolts, and more particularly to connecting rod bolts having locating features. Background technique [0002] Traditionally, connecting rods and covers in internal combustion engines are used to connect the pistons to the crankshaft. The connecting rod is attached to the cover with a plurality of bolts. There is minimal clearance between the bolt locating surface and the mating surface on the connecting rod and cover. During engine operation, the connecting rod may shift causing contact between the bolt and the rod. This contact and movement can cause fretting wear, causing the bolt and rod to microscopically weld together where their surfaces meet. Further movement of the bolt and rod can break these welds causing material damage - such as cracks / cracks. Since connecting rod bolts are highly tensile stressed members, any cracks can propagate and lead to failure of the bolt and rod. [0003]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16B35/04F01L1/46
CPCF16B35/041Y10T74/2162
Inventor A·G·福奇
Owner ELECTRO-MOTIVE DIESEL