Automotive internal combustion engine
AssigneeNissan Motor Co., Ltd.
InventorsYoshimasa Hayashi, Yoshikazu Hayakawa, Naoki Ogawa
Life of this patent
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Abstract
An automotive internal combustion engine comprises a cylinder block having at its bottom section a plurality of main bearing supporting sections, a bearing beam structure secured to the cylinder block bottom section and including a plurality of main bearing caps each cooperating with a main bearing supporting section of the cylinder block, and a beam section securely connecting the main bearing caps with each other, and a support arm disposed on an end portion of the bearing beam structure and rigidly connected to the lower section of a transmission bell housing, thereby effectively suppressing the angular displacement of the cylinder block relative to the transmission bell housing.
Claims9
An internal combustion engine for an automotive vehicle having a transmission with a bell housing connected to said engine, said bell housing having a peripheral section which defines a bell mouth, said engine comprising:
- a cylinder block having a bottom section comprising a plurality of main bearing supports;
- a bearing beam structure secured to the bottom section of said cylinder block and including a plurality of main bearing caps which cooperate with said plurality of main bearing supports, and a beam section for securely connecting said main bearing caps together;
- and
- a support arm projecting from an end portion of said bearing beam structure closest to the transmission, and extending downwardly relative to said cylinder block, said support arm being rigidly connected only to a lower section of said bell mouth which is spaced from said cylinder block and only below a plane through which said beam section extends.
Dependencies are inferred from the claim text.