Exhaust gas system

Claim 1

A DEVICE FOR PURIFYING UNBURNED EXHAUSE GASES GENERATED BY AN INTERNAL COMBUSTION ENGINE AND THE LIKE COMPRISING AN EXHAUST GAS SUPPLY LINE, AN EJECTOR FORMED IN THE EXHAUST SUPPLY LINE INCUDING A CONVERGING NOZZLE SECTION AND A DIVERGING DISCHARGE SECTION ARRANGED IN COAXIAL ALIGNMENTTHEREWITH, A CATALYST CONDUIT CONNECTED TO THE DIVERGENT SECTION OF SAID EJECTOR AND HAVING A CATALYST THEREIN DISPOSED THEREACROSS TO LIE IN THE STREAM OF GASES PASSING THERETHROUGH, A HEATER HAVING MEANS FOR BURING FUEL AND AIR FOR GENERATING HIGH TEMPERATURE GASES, FIRST CONDUIT MEANS CONNECTING SAID HEATER TO SAID EXHAUST LINE BETWEEN THE CONVERGING AND DIVERGING SECTIONS OF SAID NOZZLE AT A LOCATION TO EFFECT SUCKING OF SID HIGH TEMPERATURE GASES INTO THE EXHAUST LINE BY THE PASSAGE OF EXHAUST GASES THROUGHSAID NOZZLE CONVERGING SECTION INTO SAID NOZZLE DIVERGING SECTION, SECOND CONDUIT MEANS FOR DELIVERING AIR TO SAID EXHAUST LINE, FIRST AND SECOND VALVE MEANS RESPECTIVELY CONTROLLING A FLOW OF HIGH TEMPERATURE GASES THROUGH SAID FIRST CONDUIT MEANS AND FLOW OF AIR THROUGH SAID SECOND CONDUIT MEANS; AND TEMPERATURE RESPONSIVE MEANS EFVFECTIVE TO SENSE THE TEMPERATURE ADJACENT SAID CATALYST, AND CONTROLLING OPERATION OF SAID FIRST AND SECOND VALVE MEANS TO REGULATE THE RELATIVE QUANTITIES OF SAID HIGH TEMPERATURE GASES AND SAID AIR FLOWING TO SAID EXHAUST LINE TO MAINTAIN THE TEMPERATURE ADJACENT SAID CATALYST AT A VALUE AT LEAST EQUAL TO THE TEMPERATURE AT WHICH SAID CATALYST BECOMES ACTIVE AND LESS THAN A VALUE AT WHICH THE CATALYST WILL BE DAMAGED.

Claim 2

A DEVICE FOR PURIFYING UNBURNED EXHAUSE GASES GENERATED BY AN INTERNAL COMBUSTION ENGINE AND THE LIKE COMPRISING AN EXHAUST GAS SUPPLY LINE, AN EJECTOR FORMED IN THE EXHAUST SUPPLY LINE INCUDING A CONVERGING NOZZLE SECTION AND A DIVERGING DISCHARGE SECTION ARRANGED IN COAXIAL ALIGNMENTTHEREWITH, A CATALYST CONDUIT CONNECTED TO THE DIVERGENT SECTION OF SAID EJECTOR AND HAVING A CATALYST THEREIN DISPOSED THEREACROSS TO LIE IN THE STREAM OF GASES PASSING THERETHROUGH, A HEATER HAVING MEANS FOR BURING FUEL AND AIR FOR GENERATING HIGH TEMPERATURE GASES, FIRST CONDUIT MEANS CONNECTING SAID HEATER TO SAID EXHAUST LINE BETWEEN THE CONVERGING AND DIVERGING SECTIONS OF SAID NOZZLE AT A LOCATION TO EFFECT SUCKING OF SID HIGH TEMPERATURE GASES INTO THE EXHAUST LINE BY THE PASSAGE OF EXHAUST GASES THROUGHSAID NOZZLE CONVERGING SECTION INTO SAID NOZZLE DIVERGING SECTION, SECOND CONDUIT MEANS FOR DELIVERING AIR TO SAID EXHAUST LINE, FIRST AND SECOND VALVE MEANS RESPECTIVELY CONTROLLING A FLOW OF HIGH TEMPERATURE GASES THROUGH SAID FIRST CONDUIT MEANS AND FLOW OF AIR THROUGH SAID SECOND CONDUIT MEANS; AND TEMPERATURE RESPONSIVE MEANS EFVFECTIVE TO SENSE THE TEMPERATURE ADJACENT SAID CATALYST, AND CONTROLLING OPERATION OF SAID FIRST AND SECOND VALVE MEANS TO REGULATE THE RELATIVE QUANTITIES OF SAID HIGH TEMPERATURE GASES AND SAID AIR FLOWING TO SAID EXHAUST LINE TO MAINTAIN THE TEMPERATURE ADJACENT SAID CATALYST AT A VALUE AT LEAST EQUAL TO THE TEMPERATURE AT WHICH SAID CATALYST BECOMES ACTIVE AND LESS THAN A VALUE AT WHICH THE CATALYST WILL BE DAMAGED.