Diesel engine air inlet preheating mechanism for low-temperature environment

The invention discloses a diesel engine air inlet preheating mechanism for a low-temperature environment, and belongs to the technical field of diesel engine air inflow, the diesel engine air inlet preheating mechanism comprises an air inlet pipe, a heating wire is arranged in the air inlet pipe, and the side wall of the air inlet pipe is provided with an air outlet channel distributed in the axial direction of the air inlet pipe; the air outlet pipe can be communicated with different positions of the air outlet channel, and the driving assembly is used for controlling the air outlet pipe to move; the blocking piece can synchronously move along with the air outlet pipe, and the blocking piece is located in or can extend into the air inlet pipe; the sealing sleeve is connected to the outer side of the air inlet pipe in a sleeving mode and can deform, one end of the sealing sleeve is connected with the outer wall of the air inlet pipe in a sealed mode, the other end of the sealing sleeve and the air outlet pipe