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:
Jul. 25, 2006
Filed:
Oct. 01, 2004
Naoyuki Satou, Akishima, JP;
Fumiyuki Suzuki, Nagoya, JP;
Naoyuki Satou, Akishima, JP;
Fumiyuki Suzuki, Nagoya, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Aichi Machine Industry Co., Ltd., Nagoya, JP;
Abstract
A cylinder block for an internal combustion engine has a water jacket formed between cylindrically configured cylinder walls and a jacket sidewall. The cylinder walls is arranged to slideably retain pistons therein. The jacket sidewall is disposed around an external periphery of the cylinder walls. A pair of external block walls is provided on transverse sides of the cylinder block to extend almost an entire longitudinal length of the cylinder block. The external block walls are spaced apart from the jacket sidewall in a transverse direction to form gaps therebetween. The top end portions of the external block walls constitute an external flange portion of a top deck of the cylinder block. Thus, the rigidity of the top deck of the cylinder block is improved, and the sealing between the cylinder block and a cylinder head via a head gasket is improved.