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. 23, 1986
Filed:
Apr. 11, 1985
Suehiro Urabe, Yokohoma, JP;
Yoshio Iwasa, Nagareyama, JP;
Nissan Motor Co., Ltd., , JP;
Abstract
Each combustion chamber of the engine is communicated with (a) first and second induction passages which are dimensioned to produce an optimal ramming effect during high speed and (b) a third passage which provides good ramming during low engine speed operation. The first and second induction passages are provided with flow control valves which can be opened simultaneously or in a step-wise manner as the engine speed moves from a low speed range into a high speed one. The third passage is arranged to merge with the first so that during idling and the like, the flow of air therefrom enters the combustion chamber in a manner which produces a strong swirl and promotes good atomization of the fuel injected into the first passage by a fuel injector.