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Piston assembly

A technology of assemblies and pistons, applied to pistons, engine components, machines/engines, etc., can solve problems such as increasing the overall complexity of piston assemblies

Inactive Publication Date: 2013-01-23
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Also, cooling oil passages can add to the overall complexity of the piston assembly

Method used

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Embodiment Construction

[0045] Reference in the specification to "an exemplary instance," "an example," or similar language means that a particular feature, structure, or characteristic described in connection with an exemplary method is included in at least one instance. The appearances of the phrase "in an instance" or similar forms of language in various places in the specification do not necessarily all refer to the same instance or example.

[0046] Various exemplary illustrations are provided herein with respect to piston assemblies and methods of manufacture thereof. An exemplary piston assembly may include a piston crown having a banded portion defining a cooling oil gallery and a strut extending away from the banded portion to define a toggle pin bore. The piston may further include a piston skirt assembly secured to the strut. The piston skirt assembly may comprise two separate parts each having a closure plate integrally formed with said part, wherein the closure plate substantially close...

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Abstract

A cylinder liner for an internal combustion engine and a method of making the same are disclosed. The cylinder liner may generally include a cylindrical body configured to receive a piston assembly. The cylindrical body may further include a main body portion configured for selective engagement with an engine bore, and an upper flange configured to support the cylindrical body within the engine bore. The cylindrical body may also define an undulating cooling gallery adjacent the upper flange. The undulating cooling gallery generally defines a single coolant flow path extending about a perimeter of the cylindrical body.

Description

technical field [0001] The present invention relates to piston assemblies for internal combustion engines. Background technique [0002] Manufacturers are always looking to increase the power output and fuel efficiency of their products. One method generally used to increase efficiency and power is to reduce the oscillating masses of the engine (eg, pistons, connecting rods, and other moving parts of the engine). Engine power can also be increased by increasing the compression ratio of the engine. Raising the compression ratio of an engine also generally increases the pressure and temperature within the combustion chamber during operation. [0003] As a result, the engine, and particularly the pistons, experience increased stress due to these weight decreases and pressure and temperature increases associated with engine operation. Therefore, piston cooling is increasingly important in order to withstand the increased stresses under such operating conditions over the life ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F3/00F02F3/22
CPCF02F3/003F02F3/22F02F3/00Y10T29/49826
Inventor D·加布利艾M·T·拉博M·L·威尔德G·赵
Owner MAHLE INT GMBH
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