Burner system for detoxification or cleaning the exhaust gases of an internal combustion engine

A burner system for cleaning exhaust gases in the exhaust line of an internal combustion engine comprising a catalytic converter, a fuel injection system, a burner means including a combustion chamber for supplying combustion gases to the catalytic converter, a fuel line connected to the fuel injection system and the burner means to supply fuel from the fuel injection system to the burner means, a fuel regulator in said fuel line, secondary air supply means for supplying secondary air to said burner means, said secondary air supply means comprising an air pump for producing compressed air in an amount in excess of the amount needed for combustion of fuel in the combustion chamber, an air line connecting said air pump to said burner means, a pressure regulator connected to said air line to provide flow of secondary air from the air pump to the burner means at substantially constant pressure, and means for subjecting said pressure regulator to pressure prevailing in the combustion chamber so that said substantially constant flow of secondary air passes to said burner means, and a further line connected to said pressure regulator to convey excess air produced by the air pump to said exhaust gases, and an electronic control means connected to at least one of said regulators for controlling the same in response to pressure in said burner means.