A force auto -change over device for double fuel vehicle

The utility model provides a force auto -change over device for double fuel vehicle relates to the double fuel vehicle. Force auto -change over device to include: have open position and closed position's switch spare, be used for making the vehicle switches to using the petrol drive, with switch spare signal connection's engine control ware is used for making the vehicle switches between methyl alcohol drive and petrol drive each other, the engine control ware makes the vehicle switch or keep using the petrol drive in response to switch spare is in open position, the engine control ware makes according to preset the vehicle between methyl alcohol drive and petrol drive mutual automatic switch -over in response to switch spare is in closed position, and with the power spare that switch spare is connected is used for doing switch spare provides the electric energy. Mark experimental, after sale under the failure diagnosis condition, the methyl alcohol car can use the petrol drive always. 本实用新型提供了种用于双燃料车辆的强制切换装置