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:
Apr. 28, 1992
Filed:
Feb. 20, 1991
Huei-Huay Huang, Hsinchu, TW;
Abstract
An electromagnetic auxiliary exhausting device enabling a two-stroke engine to have an improved scavenging efficiency and an improved combustion efficiency is provided. The device includes an electromagnetic valve mounted on the engine cylinder, an actuator, and a controller responsive to an operating condition of the engine for controlling the actuator. The valve includes a movable valve needle component having a first seat surface, an immovable valve body having a second corresponding seat surface, a spring for tightly matching the seat surfaces against each other, and a coil energizable by a current pulse outputted from the actuator to result in an electromagnetic force capable of overcoming the force effected by the spring.