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:
Sep. 25, 1984
Filed:
Jul. 13, 1983
Taro Aoyama, Aichi, JP;
Yujiro Oshima, Aichi, JP;
Junichi Mizuta, Aichi, JP;
Kiyokazu Sunami, Aichi, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi, JP;
Abstract
A direct injection type internal combustion engine includes a centrifugal injector having its port facing a recess formed in a combustion chamber. The injector is arranged such that its axis of injection fails to intersect the central axis of the recess but extends at an inclination with respect to the same. In an embodiment typifying the invention, the following relationship is satisfied: ##EQU1## in which: D designates the maximum distance between facing sides of said recess; wherein with respect to a first transverse plane containing the location of the maximum distance D of said recess and a second plane intersecting said first transverse plane at a right angle, being parallel to the axis of sprays of the swirl injector and containing the center of the recess on the first transverse plane, .beta. designates the distance between the axis of sprays of said swirl injector and a second plane intersecting, at a right angle, a first transverse plane containing the location of the maximum distance D of said recess, said second plane being parallel to the axis of sprays of said swirl injector and containing the center of said recess on said first transverse plane; .theta. designates the angle contained between the axis of sprays of said swirl injector and the first transverse plane; and .theta..sub.s designates the angle of sprays of said swirl injector during fuel injection. The practice of the invention prevents the wall surface of the combustion chamber from being wetted with fuel, thereby improving the combustion phenomena and reducing the specific consumption.