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:
Mar. 07, 1989
Filed:
Nov. 23, 1987
Willem Brinkman, Velp, NL;
Thomassen International B.V., Rheden, NL;
Abstract
A four-stroke cycle internal combustion engine including a scavenging air system to minimize the emission of oxides of nitrogen. The engine includes a scavenging valve to admit scavenging air into the cylinder, and the scavenging valve is so oriented as to cause scavenging air to flow radially toward the center of the cylinder. The inlet valve and valve seat are configured in such a way as to cause the air-fuel mixture to circulate circumferentially within the cylinder and a spark plug is provided to ignite the air-fuel mixture. Additionally, an air charging system is provided to pressurize the air that is introduced for scavenging purposes, and a portion of the air from the air charging system is conveyed to an air cooling system, within which the fuel is added to the air, whereupon the air-fuel mixture is cooled to a temperaturea below the temperature of the scavenging air.