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Cylinder liner with chamfer and Anti-polishing cuff

A technology of cylinder liner and sleeve, applied in the direction of cylinder, cylinder head, machine/engine, etc., can solve problems such as increasing lubricating oil consumption

Active Publication Date: 2019-01-04
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A consequence of this buffing action is that the engine may be more susceptible to blown combustion gases into the crankcase around the piston and may further increase the consumption of lubricating oil channeled between the piston and liner

Method used

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  • Cylinder liner with chamfer and Anti-polishing cuff
  • Cylinder liner with chamfer and Anti-polishing cuff
  • Cylinder liner with chamfer and Anti-polishing cuff

Examples

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Embodiment Construction

[0010] Referring now to the drawings, in which like reference numerals indicate like elements, in figure 1 An internal combustion engine 100, such as a diesel combustion compression ignition engine or a gasoline combustion spark ignition engine, is shown for converting hydrocarbon-based fuel into mechanical power for powering a machine. As used herein, the term "machine" may refer to any machine that performs some type of operation associated with an industry such as mining, construction, agriculture, transportation, or any other industry known in the art. For example, the machine may be an earth moving machine such as a wheel loader, excavator, dump truck, backhoe, motor grader, material handler, etc. In other embodiments, the machine may be a stationary machine, such as a pump or compressor for inducing fluid flow, or a generator for generating off-grid electricity. Also, the tool can be connected to the machine. Such tools are used for a variety of tasks including, for ex...

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PUM

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Abstract

A cylinder liner assembly for inclusion in the cylinder bore (104) of an internal combustion engine (100) includes a sleeve-like cylinder liner (120) and an anti-polishing cuff (170) to scrape combustion deposits from a piston (106) reciprocally movable along an axis line (108) of the cylinder liner (120). A fire dam (160) may axially protrude from a first liner end (124) of the cylinder liner (120) and may have an obliquely angled chamfer (164) disposed therein circumscribing the axis line (108). To locate the anti-polishing ring (170) proximate to the top land of the piston (106) when at thetop dead center position, the anti-polishing ring (170) can include a cuff head (182) disposed at the first cuff end (174) that is generally triangular and has an angled undercut (182) correspondingto the obliquely angled chamfer (164). When mated, the chamfer (164) and angled undercut (182) abut against each other.

Description

technical field [0001] This patent disclosure relates generally to an internal combustion engine and, more particularly, to a method for removing hard carbon deposits and similar deposits that form on the upper lands or rims of pistons reciprocally disposed in the engine. Anti-polishing sleeves. Background technique [0002] Internal combustion engines are widely used to burn hydrocarbon-based fuels, such as diesel or gasoline, and convert the fuel's latent chemical energy into rotational or mechanical power that can be used for other tasks. A typical internal combustion engine includes an engine block having one or more cylinder bores disposed therein, each of which can slidably receive a piston connected to a crankshaft that can reciprocate within the cylinder bore to move. Combustion of fuel in the cylinder bore pushes the piston from a top dead center (TDC) position at one end of the cylinder bore toward a bottom dead center (BDC) position at the opposite end during th...

Claims

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Application Information

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IPC IPC(8): F02F1/00
CPCF02F1/004F02F1/18F02F2001/006B22D19/0009F02F1/16
Inventor B·摩根张舒T·R·麦克卢尔M·R·博查特
Owner CATERPILLAR INC
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