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The "connecting rod technology" adopted by the connecting rod of Mercedes-Benz M274 engine is an advanced technology in the world today and has been widely used abroad. The project connecting rod big head structure is simple, the small head adopts wedge design, reducing the weight of the connecting rod itself, and the I-beam design of the rod body enhances the strength and balance force of the connecting rod, so the weight of the connecting rod is reduced under the requirement of ensuring the strength and stress of the connecting rod, thus reducing the weight of the engine.
Main parameters:
(1) Forging weight tolerance: ±1.25%;
(2) Forging hardness: HB302 ~ 341;
(3) Dimensional accuracy: ±0.30mm;
(4) Metallographic structure: pearlite + ferrite ferrite content does not exceed 10% of the total grain size of 5 ~ 8;
(5) Decarbonization layer: less than 0.15mm.
