Stevens, Davis, Miller & Mosher
Oxygen partial pressure measuring device suitably adapted for internal combustion engine exhaust gases
 An oxygen partial pressure measuring device for determining oxygen partial pressures in exhaust gases emitted from internal combustion engines comprises a metallic vessel mounted within an exhaust pipe of the engine and having an exhaust gas inlet facing to the exhaust gas flow and an exhaust gas outlet formed in a side surface of the vessel, an oxygen concentration cell shutting the exhaust gas out of the air in an air-tight manner, and a monolithic structure, what is called a honeycomb structure, located between the exhaust gas inlet and the oxygen concentration cell within the vessel for burning the exhaust gas. 
NGK Insulators, Ltd.
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inventional inventional inventional
Tetsuo Shigeo Shigetaka
Watanabe Soejima Wada