Unitary ladder frame and cyulinder block structure and engine bl

Internal-combustion engines – Frame construction – Horizontal cylinder

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123195R, F02F 700

Patent

active

053579224

ABSTRACT:
A cylinder block for reducing engine vibrations and noises comprises a plurality of cylinder bores, a flared skirt portion integrally molded with a lower part of the cylinder block, and a curved ladder frame portion integrally molded with a lower part of said skirt portion. The unitary molded skirt and ladder frame structure is formed in a generally gutter configuration and defines a chamber adapted to accommodate therein a bearing block mounted to a lower portion of the cylinder block. Further, the unitary molded skirt and ladder frame structure is isolated from the bearing block.

REFERENCES:
patent: 4644911 (1987-02-01), Hidaka et al.
patent: 4669432 (1987-06-01), Harada
patent: 4878469 (1989-11-01), Hayashi et al.
patent: 5016584 (1991-05-01), Inoue et al.

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