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Title:
A RECIPROCATING INTERNAL COMBUSTION ENGINE PISTON-CYLINDER-CONNECTING ROD ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2015/176649
Kind Code:
A1
Abstract:
Disclosed are a connecting rod (340) and a coil spring seal (1011) for sealing a piston-cylinder assembly in a reciprocating internal combustion engine. The connecting rod (340) is provided without leading to a large inertia for the connecting rod (340) while the connecting rod (340) is configured to withstand a large torque due to the misalignment among centers of a piston pin (630), a crank pin (640) and a crankshaft. The connecting rod (340) can be integrated with a piston (310) to form an assembly. The coil spring seal (1011) is configured to seal both the piston (310) and a cylinder in the piston-cylinder assembly. The coil spring seal (1011) has three layers (1012,1013,1014) of coil rings with different inner and outer diameters, providing a sealing function and an absorption of vibrations and lateral movements caused by the misalignments between the piston and the cylinder under high speed stroke motion. The helical structure (1001) of the coil spring seal (1011) generates a negligible friction on the sealing contact surface and reduces scratching on the cylinder internal wall. The sealing of both the piston (310) and the cylinder reduces seepage. The result is a cleaner engine with more efficient power output.

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Inventors:
KO STANLEY MOON KAI (CN)
Application Number:
PCT/CN2015/079288
Publication Date:
November 26, 2015
Filing Date:
May 19, 2015
Export Citation:
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Assignee:
NEO MECHANICS LTD (CN)
International Classes:
F16C7/02; F02F5/00
Domestic Patent References:
WO2012079513A12012-06-21
WO2012113350A12012-08-30
Foreign References:
US5560332A1996-10-01
CN202937445U2013-05-15
CN202937798U2013-05-15
CN202937392U2013-05-15
CN103429936A2013-12-04
US20120216673A12012-08-30
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (Zhongguancun Intellectual Property BuildingBlock B, No.21 Haidian South Road, Haidian, Beijing 0, CN)
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