公开(公告)号：US10337367B2

公开(公告)日：2019-07-02

申请号：US15801309

申请日：2017-11-01

Applicant: CHONGQING RATO TECHNOLOGY CO., LTD.

Inventor： Ke Chen ,  Tao Jiang

IPC: F01M3/00 ,  F01M11/06 ,  F01M1/04 ,  F01M9/10 ,  F01M13/00 ,  F01M11/02 ,  F01M1/06

Abstract: A four-stroke engine lubrication system comprises: an engine body in which a crank shaft chamber and an air valve distribution chamber are arranged; a cylinder head cover fixed onto the engine and communicated with the atmosphere; and an oil storage tank which is configured to store lubricating oil, arranged on the engine body, located at one side of a cam, and provided with an oil mist generation device therein, wherein an oil outlet passage of the oil mist generation device communicates the oil storage tank with the crank shaft chamber via an oil outlet pipe; the crank shaft chamber is communicated with the air valve distribution chamber via a check valve; the air valve distribution chamber is communicated with the oil storage tank via a pipe; the air valve distribution chamber is communicated with the cylinder head cover; and the cylinder head cover is communicated with the oil storage tank.

公开(公告)号：US10267223B2

公开(公告)日：2019-04-23

申请号：US15801321

申请日：2017-11-01

Applicant: CHONGQING RATO TECHNOLOGY CO., LTD.

Inventor： Ke Chen ,  Heguangnan Zhi ,  Jianguo Bai ,  Tao Jiang

IPC: F02B75/02 ,  F01L1/18 ,  F01M11/00 ,  F01M1/04 ,  F01M11/04 ,  F01M11/06 ,  F01L1/02 ,  F16N19/00 ,  F02B63/02 ,  F01M9/06 ,  F01M9/10 ,  F02B33/18

Abstract: The present utility model discloses a portable four-stroke engine, comprising: an engine body, a flywheel and an oil storage tank, wherein an air valve distribution chamber and a crank shaft chamber are arranged in the engine; a crank shaft is arranged in the crank shaft chamber, and is connected to the flywheel; the oil storage tank is arranged on the engine body, located above the flywheel, and configured to store lubricating oil; a cam and a rocker arm mechanism are arranged in the air valve distribution chamber; and the cam is configured to drive the rocker arm mechanism. The portable four-stroke engine provided by the present utility model has a small volume and therefore has better operation performance.