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. 12, 2015
Filed:
Nov. 25, 2010
Tadakazu Naritomi, Kouza-gun, JP;
Tamae Kobayashi, Atsugi, JP;
Shigeatsu Saka, Tsu, JP;
Hiroo Aoki, Obu, JP;
Tadakazu Naritomi, Kouza-gun, JP;
Tamae Kobayashi, Atsugi, JP;
Shigeatsu Saka, Tsu, JP;
Hiroo Aoki, Obu, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Aichi Machine Industry Co., Ltd., Nagoya, JP;
Abstract
A three cylinder engine includes a vibration alleviation unit for alleviating vibrations in a vehicle. The vibration alleviation unit is disposed at least one of upon the crankshaft and upon a part that operates in unison with the crankshaft. The three cylinder is supported by engine mounts that are positioned upon at least both ends of the engine in the direction of the crankshaft axis. Given that Kand Krepresent spring constants of one of the engine mounts in the pitch and yaw directions of the crankshaft, Mand Mrepresent components of a primary couple that occurs in the three cylinder engine in the pitch and yaw directions, and Mrepresents the sum of Mand M, then spring constants of the engine mounts are set such that K>Kand the vibration alleviation unit is set so as to satisfy the condition 0 <M/M<0.5.