Cylinder block for engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsTakeshi Tsukahara, Yosuke Yamaguchi
Life of this patent
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Abstract
A cylinder block that can be used commonly in a longitudinally mounted engine and a transversely mounted engine without increasing a manufacturing cost. The cylinder block comprises an attachment flange joined to a transmission or a transaxle, and an oil pan or the oil pan and a ladder frame are attached to a lower end thereof. The attachment flange comprises: a first flange formed on an outer periphery thereof; a first joint surface formed on the first flange to be joined to a matching surface of the transmission; a second flange extending in the inner side of the first flange; and a second joint surface formed on the second flange to be joined to a matching surface of the transaxle.
Claims6
A cylinder block for a vehicular engine, comprising:
- an attachment flange that is configured to be joined to:
- a transmission that is arranged such that an input shaft of the transmission is aligned with a crankshaft of the engine to extend in a longitudinal direction of a vehicle, or
- a transaxle that is arranged such that an input shaft of the transaxle is aligned with the crankshaft of the engine to extend in a transverse direction of the vehicle;
- wherein
- an oil pan or the oil pan and a ladder frame are attached to a lower end of the cylinder block in a vertical direction,
- the attachment flange comprises:
- a first flange that is formed on a part of an outer periphery of the attachment flange including the lower end of the cylinder block;
- a first joint surface that is formed on the first flange, wherein when the cylinder block is joined to the transmission, the first joint surface is joined to a matching surface of the transmission opposed to the engine to be combined therewith;
- a branching section as a boundary between the attachment flange and the first flange in the outer periphery of the attachment flange;
- a second flange that branches off from the outer periphery that is closer to the attachment flange than the branching section to extend in an inner side of the first flange;
- a second joint surface that is formed on the second flange, wherein when the cylinder block is joined to the transaxle, the second joint surface is joined to a matching surface of the transaxle opposed to the engine to be combined therewith,
- a first rib that is formed integrally with the first joint surface of the first flange;
- and
- a second rib that is formed integrally with the second joint surface of the second flange,
- the first rib is connected to a rib for longitudinal arrangement formed along
- a matching surface of the oil pan that is joined to the matching surface of the transmission, or
- a matching surface of the ladder frame that is joined to the matching surface of the transmission, and
- the second rib is connected to a rib for transverse arrangement formed along
- the matching surface of the oil pan that is joined to the matching surface of the transaxle, or
- the matching surface of the ladder frame that is joined to the matching surface of the transaxle.
Dependencies are inferred from the claim text.