DUAL-CONNECTION CRANK-PISTON MECHANISM

WIPO Patent Application WO/2023/123871

A1

The present invention relates to the technical field of power plants, and in particular to a dual-connection crank-piston mechanism comprising a cylinder body, a piston, a crankshaft, and a rack. The piston and the crankshaft are hingedly connected to two connecting rods therebetween. Hinged ends of the inner connecting rod and the outer connecting rod are both hingedly connected to a slider or a swing arm. The slider is slidably connected to a guide rail. The swing arm is hingedly connected to the rack. The other end of the outer connecting rod is hingedly connected to the crankshaft handle. The stroke of the piston is greater than twice the length of the crankshaft handle. The upward running speed and the downward running speed of the piston have a 1.4- to 3-fold difference. The use of the two serially arranged connecting rods reduces the lateral force borne by the piston and prolongs the service life of the engine while realizing different speeds and times between upward and downward runs. The working angle of the crankshaft reaches 210-270 degrees, thus providing a higher power efficiency and smoother running for the mechanism.

SUN XIN (CN)

PCT/CN2022/097380

July 06, 2023

June 07, 2022

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SUN XIN (CN)

F02B75/04; F02D15/02

CN114278432A	2022-04-05
US20100132671A1	2010-06-03
JP2003083102A	2003-03-19
JP2005003093A	2005-01-06
US20180195434A1	2018-07-12
US20140060319A1	2014-03-06
DE19504735A1	1996-08-08
US20180216520A1	2018-08-02
JP2003201875A	2003-07-18

SHENZHEN KAYMING PATENT OFFICE (GENERAL PARTNERSHIP) (CN)

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