They have converted an old heavy shunter into a hybrid , slashing its fuel consumption by 40-50 % , according to klaus hiller , who is in charge of the project .

公司相关项目负责人klaushiller称，他们已经将一部旧式的重型调列车头改装为混合动力的型号，使其燃料消耗量猛降40-50%。