The utility model discloses an
excavator engine
plateau supercharging air inlet
system and
engineering machinery, and belongs to the technical field of
engineering machinery excavators, the
excavator engine
plateau supercharging air inlet
system comprises a one-way valve, a fan, an
air filter and a
turbocharger, the
air filter, the one-way valve and the
turbocharger are sequentially communicated along the air inlet direction, an air inlet of the fan is communicated with one end of a fan air suction
pipe, and an air outlet of the fan is communicated with the other end of the fan air suction
pipe. The other end of the fan air suction
pipe is communicated between the
air filter and the one-way valve, an air outlet of the fan is communicated with one end of the fan air outlet pipe, and the other end of the fan air outlet pipe is communicated between the
turbocharger and the one-way valve. The device is suitable for
plateau working conditions of the
excavator, main pump power does not need to be reduced, working efficiency is guaranteed, and performance waste is avoided.