PROCESS FOR CONTROLLING THE PROPORTION OF AIR IN A

专利名称：PROCESS FOR CONTROLLING THE

PROPORTION OF AIR IN A HOT EXHAUST-GAS STREAM, AND OXYGEN PROBE FOR USEIN THE PROCESS

发明人：LEISTRITZ, Klaus申请号：EP91907551.0申请日：19910422公开号：EP0483303A1公开日：19920506

摘要： The method of controlling the air-fuel mixture in a spark ignition engine havingat least one cylinder, in particular a motor for a motor vehicle, is used to obtain anoptimal use of a catalyst (18) having a probe placed in a hot stream of exhaust gas (20)containing carbon monoxide, nitrogen oxides and hydrocarbons. measuring signalsemitted by the sensor are processed by means of an electronic device, into controlsignals for the regulation and the ignition of the mixture. The oxygen content of theexhaust gas stream (20) is measured in the combustion chamber of the cylinders, afterthe outlet valve in the cylinder head or in the individual exhaust pipes (12) in theprotection zone a deflector device (40) aerodynamic, smooth by means of an oxygenprobe (24) in resistive ceramic, capable of withstanding temperatures up to about 1300 °C and a response time of the order of a millisecond, without reference atmosphere. Theoxygen sensor (24) has an electrical conductivity depending on the oxygen partialpressure. It is in the form of a thin diffusion layer, which constitutes the sensing layer (32)of semiconductor disposed titanate on a small support (30) made of ceramic.

申请人：Klaus Leistritz Engineering AG

地址：Granitweg 6 CH-8006 Zürich CH

国籍：CH

代理机构：Breiter, Heinz

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