Device universal for low-temperature start of diesel engine

The invention discloses a device universal for low-temperature start of a diesel engine. The device comprises an air compressor 8, a burning chamber 2, a spiral heating pipe 1, a gas expansion chamber 5, an oil burning device 10, a cold air pipe 11, a hot air pipe 12, air outgoing pipes 13, a shell 9 and an air incoming filter 7. The device is characterized in that the oil burning device 10 and the burning chamber 2 are arranged parallelly, a ventilation hole 201 is formed in the burning chamber 2, the spiral heating pipe 1 is positioned in the burning chamber 2, an air inlet 101 of the spiral heating pipe is connected with an air outlet 801 of the air compressor through the cold air pipe 11, an air outlet 102 of the spiral heating pipe is connected with an air inlet 501 of the gas expansion chamber through the hot air pipe 12, and one or multiple gas expansion chamber air outlets 502 are formed in the gas expansion chamber 5 and connected with the air outgoing pipes 3. The device preheats engine oil, the inside of the engine, diesel oil, cooling liquid and a diesel engine air filter at the same time respectively and has the advantages of good preheating effect, high universality, low electricity consumption, convenience in carrying and the like.