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:
Apr. 01, 2008
Filed:
May. 10, 2005
Masashi Yamaguchi, Yokohama, JP;
Satoru Ookuma, Yokohama, JP;
Masashi Yamaguchi, Yokohama, JP;
Satoru Ookuma, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An internal combustion engine connecting rod is designed with bolts having a minimum required strength. A strength safety factor Sfa is calculated based on an axial strength limit load Fof the bolt and the maximum load Fto be born by the bolt due to a piston inertia force (Sfa=F/F) acting on the connecting rod. A mating surface separation safety factor Sfb is calculated based on the tensile load (F−F) resulting from the piston inertia force and the load Fcarried by the bolts at a mating surface separation limit, i.e., the maximum bolt load Fat which the connecting rod main body and the cap remain in contact without separating (Sfb=F/(F−F)). The mating surface separation safety factor Sfb of the connecting rod is set to be equal to or larger than the strength safety factor Sfa of the bolts (Sfb≧Sfa).