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:
Aug. 18, 1998
Filed:
Jun. 02, 1995
Applicant:
Inventor:
Yoshiharu Isaka, Iwata, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02B / ; F02M / ;
U.S. Cl.
CPC ...
123308 ; 123432 ;
Abstract
A number of embodiments of induction systems for three-intake-valve-per-cylinder internal combustion engines, wherein the intake valves and the flow passages serving them are disposed so as to generate a tumble motion in the inducted intake charge. A number of embodiments of control valves are provided for redirecting the flow and increasing the tumble action under low-speed, low-load conditions. The control valve in each embodiment is journaled in the cylinder head at a position outwardly of the fasteners which secure the cylinder head to the cylinder block, but still quite close to the valve seats so as to provide maximum turbulence generation.