Mitsubishi Jidosha Kogyo Kabushiki Kaisha

Mitsubishi Jidosha Engineering Kabushiki Kaisha

Masayuki Kamo

Shinichi Murata

Kunitoshi Kajiwara

Daisuke Kitada

Yoshifumi Yamashita

Tomoya Bokkai

Tetsuro Miyashita

Shuji Nagano

Tetsushi Nagira

Satoshi Ando

A structure of a cylinder block includes the cylinder block having a number of cylinders; a plurality of bearing caps supporting a crankshaft along with the cylinder block; a bearing cap beam supporting each of the plural bearing caps; a number of cap bolts fastening the plural bearing caps and the bearing cap beam to the cylinder block; and beam bolts fixing the bearing cap beam to a skirt portion of the cylinder block; a plurality of baffles each of which protruding from the bearing cap beam along a rotation path of a part of the crankshaft; and a number of vertical walls engaging the plural bearing cap beam with the baffles in a vertical direction.

Structure of cylinder block for engine

A cylinder block in an engine including: the cylinder block; a plurality of bearing caps for supporting a crankshaft mounted to the cylinder block; a number of cap bolts fixing the plural bearing caps to the cylinder block; a plurality of bearing cap beams, disposed one beneath each of the plural bearing caps, supporting the plural bearing caps; and a number of beam bolts fixing the plural bearing cap beams to a skirt portion of the cylinder block, wherein each of the plural bearing cap beams and the corresponding one of the plural bearing cap are fixed to the cylinder block by two or more of the cap bolts, and two or more of the cap bolts and two or more beam bolts associated with a same one of the plural bearing cap beams are disposed at close proximity sequentially.

Cylinder block for engine

There is provided a V-type engine in which banks of an engine block are offset in the same direction as the rotational direction of a crankshaft so that the banks may be displaced toward an end of a vehicle body. On the offset side, engine accessory is mounted on a side of the engine block and below the banks. The width between the end of the engine accessory to which an impact is input first among component parts of the engine block and the end of the rear bank where the engine block moved due to the impact is abutted first on a vehicle body member is set to be shorter than in a conventional engine. Therefore, the crushable zone may be increased even in a limited engine compartment.

V-type engine

A structure for a camshaft includes a cam angle detecting element arranged to face a cam angle sensor and supported in a cantilever manner by a cam journal on the outer side of the cam journal. An extension journal between the cam journal and the cam angle detecting element is enlarged toward the cam journal such that the external diameter on the side of the cam journal may be larger than the external diameter on the side of the cam angle detecting element.

Camshaft structure

There is provided a V-type engine, in which deck cylinder parts of a cylinder block are offset in the same direction as a rotational direction of a crankshaft, and oil separation chambers are provided at an upper portion of the cylinder head displaced to a lower side by the offset. Therefore, an allowance in the axial direction of cylinders may be provided above a cylinder head of the deck cylinder parts on the lower side, and the capacity of the oil separation chambers is increased by the allowance so that the oil separation performance may be improved, while an increase in the total width and total height of an engine block is suppressed.

Growing community of inventors

Okazaki, Japan

Masayuki Kamo