Converter for catalytic exhaust gas cleaning

Abstract

Abstract A HOUSING HAVING AB INPUT FOR EXHAUST GAS AND AN AUTPUT FOR EMITTING THE CLEAN EXHAUST GAS, THE HOUSING IS MADE FROM A MATERIAL HAVING A HIGH POSITIVE COEFFICIENT OF EXPANSION UNDER HEAT, A CATALYZATOR BODY PLACED IN THE HOUSING AND BEING SECURED IN IT AT ONE END THEREOF DOWNSTREAM OF THE GAS FLOW AND BEING MADE FROM A MATERIAL HAVING A LOW COEFFICIENT OF EXPANSION UNDER HEAT, THE CATALYZATOR BODY AND THE HOUSING BEING ARRANGED FOR RELATIVE MOVEMENT WITH RESPECT TO EACH OTHER UNDER HEAT EXPANSION OF THE HOUSING EXCEPT FOR THE SECURED PORTION OF THE CATALYZATOR BODY, A BYPASS CONDUIT HAVING AN INPUT OPENING TO HOUSING AT A REGION UPSTREAM OF THE EXHAUST GASFLOWAND ADAPTED TO CONNECT THE INPUT TO THE HOUSING WITH THE OUTPUT THEREOF WHEN THE INPUT OPENINGS OF SUCH PIPE CONDUIT IS OPENED, THE CATALYZATOR BODY IS MOUNTED IN THE HOUSING FOR COVERING THE INPUT OPENING OF THE BYPASS CONDUIT AT A PREDETERMINED RANGE OF TEMPERATURES OF THE EXHAUST GAS AND THEREBY FORCING THE EXHAUST GAS TO PASS THROUGH THE CATALYZATOR TO THE INPUT OF THE HOUSING THE CATALYZATOR UNCOVERING THE INPUT OF THE HOUSING AT LEAST PARTLY AND THEREAFTER INCREASINGLY UNCOVERING IT ABOVE A PREDETERMINED TEMPERATURE RANGE OF THE GASES WHEN THE HOUSING MOVES UNDER HEAT EXPANSION RELATIVE TO THE CATALYZATOR.

Inventors

• 👤 H Heitland

Bibliographic Details