Page 11 - Methods For Monitoring And Diagnosing The Efficiency Of Catalytic Converters A Patent - oriented Survey

x Methods for Monitoring and Diagnosing the Efficiency of Catalytic Converters

1.6 Honda Motor Co. Ltd. 13 1
Engines with mtrltiple cylinder groups 143
1.7 Hitachi Ltd. 145
Pltrrality of catalytic converters arranged in series
k the exhairst pipe 157
1.8 Mazda Motor Corporation 161
Engines with mwlt iple cylinder groups 165
1.9 Siemens Automotive SA - Siemens AG 169
1.10 NGK Spark Plug Co. 175
1.1 1 Suzuki Motor Corporation 179
1. I2 Mitsubishi Motors Corporation - Mitsubishi Electric Corporation 187
1.13 Nissan Motor Co. Ltd. 197
Engines wi th mwltiple cylinder groirps 206
1.14 General Motors Corp. 207
Pl~walify of catalytic converters arranged lit series
in the exha~rst pipe 212
1.15 Fuji Heavy Industries Ltd. 213
1. I6 Other methods 215
0 Lucas Industries Public Ltd Co. 215
e Magneti Marelli S.p.A. 216
e Pierburg GmbH & Co. KG 217
e Bayerische Motoren Werke AG 217
e The United States Environmental Protection Agency 218
a Weegen, Rainer 219
e HAT Auto S.p.A. 220
e Volkswagen AG 22 1
0 Roth-Technik GmbH & Co. Forschung fir Automobil- und
Umwelttechniek 22 1
e Unisia Jecs Corp. 22 1
Engines with midtiple cylinder groups 222
0 FEV Motortechnik GmbH & Co. 223
a Hyundai Motor Co. 223
a Osaka Gas Co. Ltd. 224
e Automobiles Peugeot - Automobiles Citroen 225
I3igines with midt iple cylinder groups 225
e Volvo AB 226
e Denso Corp. 226
0 VDO Adolf Schindling AG 228
0 Regie Nationale des Wsines Renault SA 228
e Deutsche Fernsprecher GmbH Marburg 230
Other methods 23 0

Part Two: Catalytic Converter Functionality Diagnosis by Means of
Temperature Measurements 23 1