The utility model provides a through -flow diverter valve of turbine of can backing a car, relate to energy power equipment technical field, it includes outer quick -witted casket, inlayer machine casket and middle quick -witted casket, middle quick -witted casket becomes the white space with outer quick -witted box and is the by -pass air duct, middle quick -witted casket becomes the white space with inlayer machine box and is interior duct, be equipped with mechanism's actuating lever through anchor bolt in the outer quick -witted casket, mechanism's actuating lever passes through anchor bolt and is connected with mechanism connecting rod one end, mechanism's connecting rod other end passes through anchor bolt and mechanism's this body coupling of driver's valve, the driver's valve body swing joint of mechanism is on the quick -witted casket in centre, mechanism's this trunk circling of driver's valve overlap joint is on the quick -witted casket of skin, be in the primary importance, mechanism's this trunk circling of driver's valve overlap joint is on inlayer machine casket, be in the second place. Through -flow diverter valve of turbine of can backing a car can switch combustion engine inside air current, realizes the free turbine reversal, structure safe and reliable guarantees stable work under abominable operating mode, the leakproofness is good, guarantees when the mechanism is backed a car in the increase for the prototype power loss within 5%.