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:
Nov. 28, 2000
Filed:
Jun. 09, 1998
Applicant:
Inventors:
Hiroya Fujimoto, Zushi, JP;
Toshimitsu Matsuoka, Yokosuka, JP;
Assignee:
Nissan Motor Co., Ltd., Kanawaga-Ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
123 4174 ; 123 415 ; 1231932 ;
Abstract
In an engine cylinder block, a water jacket base wall is formed between a lower end of a water jacket outer wall and an intermediate part of a cylinder wall. A head bolt boss is formed in the water jacket outer wall for screwing in a head bolt. A thin part is formed in an intermediate part of the water jacket base wall. The rigidity of the water jacket base wall thereby falls, a force in the axial direction of the head bolt due to tightening of the head bolt or input of combustion pressure is absorbed by deformation of the water jacket base wall, and deformation of the cylinder wall is suppressed.