| 摘要 |
PROBLEM TO BE SOLVED: To improve a load capacity of a thrust bearing in an internal combustion engine. SOLUTION: A rearmost main bearing 5 of the internal combustion engine is arranged between a throw of a crankshaft and a thrust cam inside the thrust bearing. A thrust segment 20 is arranged between a forward facing sliding face 22 on the thrust cam and a rearward facing supporting face 18 on a fixed type main bearing housing. Within a circumferential area, the thrust cam 14 has a rotationally symmetric arc shaped recessed part 28 extending radially inward to a position of a height not exceeding an intermediate portion of the thrust segment 20.
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