Continental Automotive Gmbh

Cpt Group Gmbh

Vitesco Technologies Gmbh

Markus Hien

Denny Schädlich

Johannes Ante

Willibald Reitmeier

Ralf Moos

Martin Weinberger

Markus Dietrich

Katharina Burger

Gunter Hagen

Various embodiments include a catalyst measuring system for on-board diagnostics and for determining the aging of an SCR catalytic converter for a vehicle comprising: a processor; an SCR catalytic converter for purifying exhaust gas of the vehicle; a high-frequency sensor for determining the ammonia loading of the SCR catalytic converter; a NOx sensor for sensing the NOx concentration downstream of the SCR catalytic converter; and an ammonia dosing system for injecting ammonia into an exhaust system of the vehicle. The control device instructs the ammonia dosing system to inject ammonia selectively into the exhaust system at a plurality of different dosing rates. The control device evaluates data received from the NOx sensor and of the high-frequency sensor to calculate the ammonia dosing rate.

On-board diagnostics for an exhaust gas catalytic converter and detection of aging

A method and apparatus for compensates for oxygen sensor aging determines a correction of by measuring oxygen content above a specified threshold value and measuring current flowing through the sensor over time.

Method for operating an oxygen sensor, computer program product and oxygen sensor

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Bruck, Germany

Markus Hien