(HELSINKI) — Technology group Wartsila is introducing another four methanol engines to its marine propulsion portfolio, setting a new industry benchmark with the broadest selection of methanol engines currently on the market. In addition to the Wartsila 32 methanol engine launched last year, the company has added the new Wartsila 20, Wartsila 31, Wartsila 46F and Wartsila 46TS to its…