Two-stroke engine for realizing turbulent flow scavenging by adopting filter screen on square hole in left box body

• Main Authors: SU KE, FU TIANBO, HU JINGRONG, YE XIAOBEI
• Format: Patent
• Language: Chinese; English
• Published: 02.11.2016
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; WEAPONS

The invention relates to a two-stroke engine for realizing turbulent flow scavenging by adopting a filter screen on a square hole in a left box body. The square hole is formed in the left box body, and is a through hole. Noise reduction holes are formed in a square frame of a buffer frame, so that the noise reduction process of airflow is that the airflow enters the noise reduction holes to be compressed and overflows from the noise reduction holes to expand; a raised bump with an elliptic periphery is arranged in the middle of a square plate, containing a plurality of filter holes, of a filter screen arranged on the buffer frame; the curve of the external contour part of the raised bump is a section of a logarithmic spiral; and the cross section of a piston, the external contour of a valve disk of a carburetor, the valve disk of the carburetor, the inner wall of an air inlet passage of the carburetor, and the inner walls of an air inlet passage and an air outlet passage of the engine are a section of the log