The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 10, 2014
Filed:
Jan. 21, 2011
Kunimune Kawamura, Tokyo, JP;
Kunimune Kawamura, Tokyo, JP;
Yamabiko Corporation, Tokyo, JP;
Abstract
In a two-stroke internal combustion engine using air for scavenging its combustion chamber (), a scavenging passage () communicating with a crankcase () and a combustion chamber () is charged first with rich air-fuel mixture generated by a carburetor, next with lean air-fuel mixture, and next with air through an in-piston passage (). The lean air-fuel mixture is generated in the in-piston passageby diluting the air-fuel mixture with the air. In each scavenging stroke to scavenge the combustion chamber (), the combustion chamber () is supplied first with the air () and next with the lean air-fuel mixture () from the scavenging passage (). The use of the lean-air-fuel mixture () next to the air () contributes to reduce acceleration failure or engine stop caused by sudden acceleration.