Carbon deposition elimination method

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.

1 . A carbon deposition eliminating method, comprising the steps of:
 a) providing an exhaust pipe, said exhaust pipe comprising an input end and an output end, a waste gas inlet and an air inlet provided at said input end, an exhaust gas purifier disposed in said output end, and a combustion chamber in communication between said waste gas inlet and said air inlet at said input end and said exhaust gas purifier in said output end;   b) using a sensor to detect the pressure of the waste gas being delivered through said combustion chamber toward said exhaust-gas purifier;   c) enabling an automatic control system to open said air inlet for guiding outside fresh air into said combustion chamber when the pressure of the waste gas being delivered through said combustion chamber toward said exhaust-gas purifier surpasses a predetermined pressure level;   d) starting a flamethrower to project a long controllable stream of fire into said combustion chamber to heat said combustion chamber to a temperature range of 350° C.˜600° C.;   e) enabling the heated waste gas to pass from said combustion chamber through said exhaust gas purifier toward said output end of said exhaust pipe to remove cumulated carbon from said exhaust gas purifier; and   f) enabling said automatic control system to close said air inlet and to open said waste gas inlet for guiding a waste gas from a diesel engine into said combustion chamber toward said output end of said exhaust pipe via said exhaust gas purifier when the pressure of the waste gas pressure of the waste gas being delivered through said combustion chamber toward said exhaust-gas purifier drops below said predetermined pressure level.   
   
   
       2 . The carbon deposition eliminating method as claimed in  claim 1 , wherein said automatic control system is provided with a timer and a milometer for enabling a user to set a predetermined time interval and a predetermined mileage so that when the set predetermined time internal is up or when the travel distance of the vehicle in which said exhaust pipe is installed reaches the set mileage, said automatic control system opens said air inlet and closes said waste gas inlet and then turns on said flamethrower. 
   
   
       3 . The carbon deposition eliminating method as claimed in  claim 1 , wherein said air inlet has mounted therein a one-way valve to prohibit reverse flow of intake air; said waste gas inlet has mounted therein a one-way valve to prohibit reverse flow of intake waste gas. 
   
   
       4 . The carbon deposition eliminating method as claimed in  claim 1 , wherein said sensor is a backpressure sensor. 
   
   
       5 . The carbon deposition eliminating method as claimed in  claim 1 , wherein said exhaust gas purifier is a honeycomb novel metal catalyst converter.