Abstract: A carbon deposition eliminating method includes the steps of: a) providing an exhaust pipe having a waste gas inlet and an air inlet at one end and an exhaust gas purifier at the other end and a combustion chamber on the middle, b) using a sensor to detect the pressure of the waste gas in the combustion chamber, c) enabling an automatic control system to open the air inlet for guiding outside fresh air into the combustion chamber when the waste gas pressure in the combustion chamber is high, d) starting a flamethrower to heat the combustion chamber to about 350° C.˜600° C., e) enabling the heated high temperature waste gas to pass through the exhaust gas purifier and to carry cumulated carbon away from the exhaust gas purifier, and f) enabling the automatic control system to close the air inlet and to open the waste gas inlet for letting engine exhaust gas to pass through the exhaust pipe when the waste gas pressure in the combustion chamber drops below the predetermined pressure level.

Abstract: A heating system includes a heater installed in between the exhaust pipe and exhaust purifier of a diesel engine to heat the exhaust purifier in burning out cumulative carbon, a backpressure sensor for detecting the backpressure in the heater, a temperature sensor for detecting the temperature in the exhaust purifier, a fuel system for supplying a fuel mixture to the heater, an air compressor controllable to compress air into the fuel system to mix with a condensed fuel gas in the fuel system into a fuel mixture for delivery to the heater, and a computer controller electrically connected with the backpressure sensor and the temperature sensor for controlling the operation of the air compressor subject to the backpressure level detected by the backpressure sensor and the temperature detected by the temperature sensor.