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As a result of the trend toward higher ignition pressures as a means of increasing combustion engine efficiency, connecting rods are also exposed to ever higher loads. To support engine developments such as supercharging and turbocharging, Frauenthal Powertrain and Georgsmarienhütte steel mill have developed a crackable forging material with improved yield strength and higher fatigue. Higher fatigue strength makes cross-sectional reductions possible with equivalent buckle and fracture resistance - or alternatively makes the connecting rod more resilient with the same dimensions. The goal is to enable the efficiency and performance increase of internal combustion engines without investing in costly new connecting rod geometries. ...
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