ZURICH (Reuters) -ABB will spin off its turbocharging business to its shareholders, the Swiss engineering and technology company said on Wednesday, with the aim of listing it on the SIX Swiss Stock Exchange in October. Shareholders will receive one share in the business, which ABB renamed Accelleron this year, for every 20 ABB shares they hold if the decision is approved at an extraordinary general meeting in September. The proposed spin-off is part of ABB’s strategy to simplify its portfolio and focus more on electrification and industrial automation. ABB, which reports second-quarter earning…