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:
Jun. 16, 1998
Filed:
Sep. 05, 1995
Noriaki Mitobe, Higashihiroshima, JP;
Isao Shimizu, Higashihiroshima, JP;
Kunitomo Minamitani, Kure, JP;
Yasuyoshi Hori, Kobe, JP;
Futoshi Nishioka, Hiroshima, JP;
Tetsushi Hosokai, Kure, JP;
Kenji Oka, Aki-gun, JP;
Hideshi Terao, Higashihiroshima, JP;
Misao Fujimoto, Higashihiroshima, JP;
Masaki Harada, Higashihiroshima, JP;
Mazda Motor Corporation, Hiroshima-ken, JP;
Abstract
A lean burn engine adapted to establish a specified air-fuel ratio leaner by predetermined rate than a stoichiometric air-fuel ratio in a range of low engine speeds and low engine loads is provided with an air intake system of a low speed type which provides a high charging efficiency in a range of low engine speeds and an exhaust system capable of eliminating a nitrogen oxide emission in the exhaust even during lean burning.