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:
Mar. 27, 1990
Filed:
Apr. 05, 1989
Takeshi Kageyama, Aki, JP;
Arata Matsue, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A cylinder block reinforcement construction for an engine includes a reinforcement member fixed to a skirt portion of a cylinder block of the half-skirt type and fastened to each of bearing caps bearing the crankshaft of the engine. The reinforcement member is formed in a platelike configuration and a substantially dishlike sectional shape and includes a bottom face portion, side face portions rising from both side ends of the bottom face portion, and flange portions provided at upper edges of the side face portions so as to be fastened to the skirt portion. The reinforcement member is provided, at positions corresponding to respective of the bearing caps and spaced in the axial direction of the crankshaft, with protuberant portions for attachment to respective of the bearing caps. The bottom face portion may be provided with bottom vent holes, each being provided between adjacent of the protuberant portions at a position corresponding to the respective cylinder. The area of each bottom hole at a location where the piston disposed directly thereabove is accompanied by an adjacent piston reciprocated in phase therewith is greater than the area of bottom holes at other locations.