20240053296. Method for Operating a Wide-Band Lambda Probe simplified abstract (Robert Bosch GmbH)
Method for Operating a Wide-Band Lambda Probe
Organization Name
Inventor(s)
Bernhard Ledermann of Weil Der Stadt (DE)
Ralf Zimmerschied of Darmstadt (DE)
Method for Operating a Wide-Band Lambda Probe - A simplified explanation of the abstract
This abstract first appeared for US patent application 20240053296 titled 'Method for Operating a Wide-Band Lambda Probe
Simplified Explanation
The method described in the patent application involves controlling the Nernst voltage of a wide-band lambda probe to a predefined setpoint value by adjusting the pump voltage and/or pump current. This is achieved by measuring the pump voltage and/or pump current, as well as the lambda value, and forming measured value pairs based on these measurements. A regression line is then calculated based on the measured value pairs to approximate a predefined part of a reference characteristic curve of the pump voltage. The method also involves determining a pump current offset and/or lambda offset based on the regression line.
- The method involves controlling the Nernst voltage of a wide-band lambda probe by adjusting the pump voltage and/or pump current.
- Measured value pairs are formed based on measurements of the pump voltage, pump current, and lambda value.
- A regression line is calculated to approximate a predefined part of a reference characteristic curve of the pump voltage.
- Pump current offset and/or lambda offset are determined based on the regression line.
- Potential Applications
- Automotive industry for engine control systems
- Emission control systems in vehicles
- Problems Solved
- Precise control of Nernst voltage in wide-band lambda probes
- Improved accuracy in measuring and controlling air-fuel ratio in combustion engines
- Benefits
- Enhanced engine performance and fuel efficiency
- Reduced emissions and environmental impact
- Improved reliability and longevity of engine components
Original Abstract Submitted
a method for operating a wide-band lambda probe. the method includes controlling the nernst voltage to a predefined setpoint value by setting the pump voltage and/or the pump current, measuring the pump voltage and/or the pump current and/or the lambda value, forming measured value pairs based on measured measuring values of the pump voltage, the pump current and/or the lambda value, calculating a regression line based on the measured value pairs in order to approximate a predefined part of a reference characteristic curve of the pump voltage, and ascertaining a pump current offset and/or lambda offset based on the regression line.
