ABB named Morten Wierod as its new chief executive, the Swiss engineering group said on Friday, replacing industry veteran Bjorn Rosengren who has led an overhaul of the electrification and robotics company.Wierod, the head of ABB's electrification business, will replace Rosengren, effective Aug. 1, the Zurich-based company said.Rosengren, who joined ABB in 2020, will retire at the end of the year