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Piston

A piston and skirt technology, applied in the field of pistons, can solve the problems of efficiency loss, cylinder bite, increase the contact force between piston and cylinder bore, etc., and achieve the effects of reducing emissions, improving performance and efficiency, and reducing sway angle

Active Publication Date: 2010-10-06
GE分配动力股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, thermal expansion of the piston material increases the contact force between the piston and cylinder bore, resulting in high friction, which can result in loss of efficiency and possible seizure of the piston in the cylinder bore

Method used

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Embodiment Construction

[0027] refer to Figure 1A -B, the piston 100 can reciprocate in the cylinder bore 205 of the engine 200 (a part of the engine 200 has been removed from Figure 1A removed for a better view of piston 100). A layer of hydrodynamic oil or other lubricant may be applied to portions of the cylinder wall 210 to reduce friction between the piston 100 and the cylinder wall 210 . The piston 100 may be pivotally engaged with the piston rod 102 using a pin 104 . In this case, the piston 100 is pivotable relative to the rod 102 about a pivot or pin axis 105 . The pin connection allows the piston 100 to transmit force to or receive force from the piston rod 102 as the piston 100 reciprocates within the cylinder bore 205 . In certain embodiments, piston 100 is constructed in whole or in part of aluminum or aluminum alloys, carbon (e.g., carbon fiber and carbon / carbon), iron, steel, or other suitable materials, and may include combinations of the foregoing or other materials. .

[0028...

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PUM

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Abstract

A number of embodiments of a piston 100 may have a shape that provides enhanced piston guidance. In such embodiments, the piston shape may include an axial profile that is configured to provide certain thrust load characteristics.

Description

[0001] Statement Regarding Federally Funded Research and Development [0002] The U.S. Government grants a paid-up license and limited rights to this invention to require the patentee to licensed to others under the terms, as provided by the terms of DE-FC-02-01CH11080 awarded by the Department of Energy Sample. [0003] References to related applications [0004] This application claims priority to US Patent Application Serial No. 11 / 265,870, filed November 3, 2005, and US Patent Application Serial No. 11 / 265,948, filed November 3, 2005, both entitled "Pistons." technical field [0005] This invention relates to pistons for use in engines and the like. Background technique [0006] Various types of engines use pistons in cylinder bores. Each piston is reciprocable within its associated cylinder bore when a portion of the outer peripheral surface of the piston is guided by the cylinder wall. The piston may include a piston skirt that is shaped to bear against the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J1/04F02F3/02
CPCF16J1/04
Inventor R·J·多纳林
Owner GE分配动力股份有限公司
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