Diesel engine exhaust purifier

Abstract

A diesel engine exhaust purifier includes a burner system having a metal barrel mounted in the exhaust pipe of a diesel vehicle and a flame thrower mounted in the metal barrel, pressure sensors mounted in the front and rear ends of the metal barrel, a precious metal catalyzer converter type filter system mounted in the metal barrel for removing solid matters from engine exhaust gas and a microcontroller electrically connected to the power supply system of the diesel vehicle for driving the pump-operated fuel tank of the flame thrower to deliver forced fuel out of a fuel nozzle and an auto igniter to ignite the mist of fuel discharged out of the fuel nozzle for burning out cumulated carbon subject to the detection of the pressure sensors.

1 . An exhaust pipe purifier installed in the exhaust pipe of a diesel vehicle to eliminate cumulated carbon from the exhaust pipe, comprising:
 a burner system, said burner system comprising a metal barrel mounted in said exhaust pipe, a flame thrower mounted in said metal barrel, said flame thrower comprising a pump-operated fuel tank, a fuel nozzle adapted to spray a fuel into a mist, a fuel pipe adapted to guide a fuel from said pump-operated fuel tank to said fuel nozzle for spraying into a mist, and an auto igniter adapted to discharge sparks for burning the mist of fuel discharged out of said fuel nozzle,   a first pressure sensor mounted in said metal barrel near a front end thereof;   a second pressure sensor mounted in said metal barrel near a rear end thereof;   a filter system mounted in said metal barrel between said burner system and said second pressure sensor and adapted to remove solid matters from engine exhaust gas; and   a microcontroller electrically connected to the power supply system of the diesel vehicle and electrically connected to said first pressure sensor and said second pressure sensor and said burner system and adapted to control the operation of said pump-operated fuel tank and said auto igniter subject to pressure detection of said first pressure sensor and said second pressure sensor.   
     
     
         2 . The exhaust pipe purifier as claimed in  claim 1 , wherein said filter system comprises a straight through precious metal catalyzer type ceramic filter element and a nested precious metal catalyzer type ceramic filter connected in series.