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:
May. 07, 2002
Filed:
Jan. 29, 2001
Yoshiyuki Umino, Saitama, JP;
Tatsuya Sagano, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A variable intake apparatus for an in-line four-cylinder internal combustion engine includes a rotary valve provided between an intermediate portion along the length of four air intake passages to and an intake air collecting chamber and a control means switching the rotary valve in triple stages in response to the engine speed. The control means is constructed such that at a low speed range, communications are blocked off between the adjacent intake passageways and and and , at an intermediate speed range, communications are established between pairs of intake passageways and and , and at a high speed range, communications are established not only between the adjacent intake passages and and and , but also between the respective air intake passageways to and the intake collecting chamber