发明申请
US20100005783A1 DEVICE FOR MONITORING AN EXHAUST GAS CATALYTIC CONVERTER FOR AN INTERNAL COMBUSTION ENGINE 审中-公开
用于监测用于内燃机的排气变换器的装置

DEVICE FOR MONITORING AN EXHAUST GAS CATALYTIC CONVERTER FOR AN INTERNAL COMBUSTION ENGINE
摘要:
A device for monitoring an exhaust gas catalytic converter in the exhaust system of an internal combustion engine, includes a measuring apparatus that is arranged in the exhaust system in such a way that, in the greatest part of the operating range of the internal combustion engine, it assumes a temperature that is correlated with a temperature of the exhaust gas catalytic converter. The measuring apparatus has a temperature-sensitive component with a temperature-dependent characteristic component parameter that changes either abruptly at a predetermined transition temperature or temperature range, or continuously in a predetermined way as a function of the temperature. A control and evaluation unit connected to the measuring arrangement detects the characteristic component parameter and/or a change in the latter, and correlates it with an aging state of the exhaust gas catalytic converter.
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