United Kingdom, Aug. 22 -- mtu engines from Rolls-Royce will soon be powering more high-speed trains in Saudi Arabia. The company has received a major order for 50 mtu Series 4000 engines from Stadler Bussnang AG, one of the world's largest manufacturers of rail vehicles. A total of ten trains will be in service in future and will travel at speeds of up to 200 km/h on the Dammam - Riyadh route. Until then, four trains will already have completed extensive test and approval runs in Europe and Saudi Arabia.The mtu Series 4000 engines will once again prove their reliability under the most demanding conditions. Since 2012, more than 70 12V 4000 engines have been in use in similar trains operated by Saudi Arabia Railways. A total of 50 12V 4000 ...