Apparatus and method for positioning a connecting rod relative components underlying a cylinder of an engine block

Patent metadata

Field	Value
Publication number	US-11224946-B2
Application number	US-201917256859-A
Country	US
Kind code	B2
Filing date	Jun 21, 2019
Priority date	Jul 2, 2018
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

An apparatus is provided for positioning a connecting rod relative to one or more components underlying a cylinder of an engine block, in tandem with assembling a cylinder liner to the cylinder of the engine block. The apparatus has a holder mechanism releasably holding a bottom end of the cylinder liner. A portion of the holder mechanism is configured to extend beyond the bottom end of the cylinder liner to define a groove that is disposed parallel to a circumference of the cylinder liner. A link pivotally connects the cylinder liner to the connecting rod. The link includes a first end defining a pin that is slidably engaged with the groove of the holder mechanism and a second end that defines an opening therethrough. The opening facilitates insertion of a fastener for releasably securing the link to a bottom end of the connecting rod.

First claim

The invention claimed is:

1. An apparatus for positioning a connecting rod relative to one or more components underlying a cylinder of an engine block in tandem with assembling a cylinder liner to the cylinder of the engine block, the apparatus comprising:
a holder mechanism releasably holding a bottom end of the cylinder liner, wherein a portion of the holder mechanism is configured to extend beyond the bottom end of the cylinder liner to define a groove disposed parallel to a circumference of the cylinder liner;
a link pivotally connecting the cylinder liner to the connecting rod, the link comprising:
a first end defining a pin slidably engaged with the groove of the holder mechanism; and
a second end distal from the first end, the second end defining an opening therethrough, the opening configured to facilitate insertion of a fastener for releasably securing the link to a bottom end of the connecting rod.

2. The apparatus of claim 1 , wherein movement of the bottom end of the connecting rod is coterminous with movement of the pin along the groove.

3. The apparatus of claim 1 , wherein the groove has a curvilinear profile.

4. The apparatus of claim 3 , wherein movement of the pin follows the curvilinear profile of the groove such that the second end of the link is biased to move the bottom end of the connecting rod in at least one of:
a direction parallel to an axis of the cylinder liner and a direction about the axis of the cylinder liner.

5. The apparatus of claim 1 , wherein the link has a mid-portion arcuately shaped so as to be disposed parallel to the circumference of the cylinder liner.

6. The apparatus of claim 1 , wherein the holder mechanism is positioned, to releasably hold the bottom end of the cylinder liner, at a pre-determined location on the circumference of the cylinder liner.

7. The apparatus of claim 6 , wherein the pre-determined location on the circumference of the cylinder liner at which the holder mechanism is positioned corresponds to an initial position of the bottom end of the connecting rod so that the bottom end of the connecting rod traverses an angular range about the axis of the cylinder liner towards a desired final position.

8. The apparatus of claim 7 , wherein the bottom end of the connecting rod moves through the angular range without coming into contact with the one or more components underlying the cylinder.

9. A method for positioning a connecting rod relative to one or more components underlying a cylinder of an engine block in tandem with assembling a cylinder liner to the cylinder of the engine block, the method comprising:
providing a holder mechanism for releasably holding a bottom end of the cylinder liner,
defining a groove within a portion of the holder mechanism that extends beyond the bottom end of the cylinder liner, the groove disposed parallel to a circumference of the cylinder liner;
providing a link having a first end defining a pin slidably engaged with the groove of the holder mechanism and a second end defining an opening to facilitate insertion of a fastener for releasably securing the link to a bottom end of the connecting rod; and
urging the pin to follow a profile of the groove such that the second end of the link is biased to move the bottom end of the connecting rod while preventing the bottom end of the connecting rod from coming into contact with the one or more components underlying the cylinder.

10. The method of claim 9 , wherein the groove has a curvilinear profile.

11. The method of claim 10 , wherein movement of the pin follows the curvilinear profile of the groove such that the second end of the link is biased to move the bottom end of the connecting rod in at least one of:
a direction parallel to an axis of the cylinder liner and a direction about the axis of the cylinder liner.

12. The method of claim 9 , wherein movement of the bottom end of the connecting rod is coterminous with movement of the pin along the groove.

13. The method of claim 9 , wherein the link is arcuately shaped so as to be disposed parallel to the circumference of the cylinder liner.

14. The method of claim 9 , wherein the holder mechanism is positioned, to releasably hold the bottom end of the cylinder liner, at a pre-determined location on the circumference of the cylinder liner.

15. The method of claim 14 , wherein the pre-determined location on the circumference of the cylinder liner at which the holder mechanism is positioned corresponds to an initial position of the bottom end of the connecting rod so that the bottom end of the connecting rod moves through an angular range about the axis of the cylinder liner towards a desired final position.

Assignees

• Caterpillar Energy Solutions Gmbh

Inventors

• Guisasola Inigo

Classifications

• F23R2900/00018

  Manufacturing combustion chamber liners or subparts · CPC title

• B25B27/0035

  for motor-vehicles (wrenches for mounting or dismounting wheels B60B29/003) · CPC title

• F02F7/0021

  Construction · CPC title

• B25B27/06

  inserting or withdrawing sleeves or bearing races · CPC title

• B23P19/043 Primary

  for inserting piston-connecting rods assemblies in cylinders · CPC title