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:
Jul. 02, 1991
Filed:
Nov. 02, 1989
Toshiharu Nogi, Katsuta, JP;
Teruo Yamauchi, Farmington Hills, MI (US);
Yoshishige Ohyama, Katsuta, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An air injector is provided in the vicinity of a fuel injector. By the fuel injector and the air injector, the droplet diameter of a gasoline spray included an air-fuel mixture supplied to a cylinder of the engine is controlled. When the fuel injector is operated during a suction stroke of a gasoline engine, the droplet diameter of the gasoline spray supplied to a portion if the cylinder in a vicinity of a discharge electrode of a spark plug is controlled to have a predetermined value, such as substantially 40 .mu.m. Since the droplet diameter of the gasoline spray is controlled voluntarily, the air-fuel mixture of the gasoline spray size having a good ignition characteristic property is distributed selectively in the vicinity of the discharge electrode of the spark plug. A stable ignition condition for the engine is maintained without the occurrence of knocking, and an engine having a high thermal efficiency is obtained.