F - Mech Eng,Light,Heat,Weapons – 02 – F
Patent
F - Mech Eng,Light,Heat,Weapons
02
F
F02F 7/00 (2006.01) F02B 61/02 (2006.01) F02F 1/00 (2006.01) F16C 9/02 (2006.01) F16M 1/025 (2006.01)
Patent
CA 2472573
An engine fastening structure in which a crankcase and a cylinder body are provided as separate units, so that the crankcase and the cylinder body are connected together with connecting bolts, characterized in that the crankcase 2 is constructed in such a manner that an iron alloy bearing member 12b for supporting a crankshaft bearing is insert cast in an aluminum alloy, and in that connecting boss portions 12c are integrally formed on both sides of the iron alloy bearing member 12b which are situated opposite across a cylinder axis as viewed in a direction in which the crankshaft extends in such a manner as to extend toward a cylinder body side, so that the connecting bolts 30a are screwed into the connecting boss portions 12c, respectively.
Dans une structure de fixation de moteur comprenant un carter de vilebrequin et un corps de cylindre séparés, accouplés par le biais de boulons d'accouplement, un carter de vilebrequin (2) est construit de sorte qu'un élément de palier (12b) en ferro-alliage soutenant un palier d'arbre de vilebrequin est enveloppé dans une pièce moulée en alliage d'aluminium, des bossages d'accouplement (12c) s'étendant vers le corps de cylindre et étant formés d'une seule pièce des deux côtés de l'élément de palier (12b) en ferro-alliage, l'axe de cylindre étant situé entre les deux, vu dans la direction de l'arbre de carter, et les boulons d'accouplement (30a) étant insérés par le biais d'un filetage dans les bossages d'accouplement (12c).
Ito Masahiro
Utsumi Yoji
G. Ronald Bell & Associates
Yamaha Hatsudoki Kabushiki Kaisha
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