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Development of the Volvo Lambda-Sond System
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English
Abstract
Volvo has developed the first production emission control system to fully utilize a three-way catalyst. Called the “Volvo Lambda-sond system”, it is applied to the 4-cylinder in-line B21 engine, and employs three essential new components - an exhaust gas composition sensor, an additional feed-back loop to the continuous fuel injection system, and the catalyst. Outstanding certification results were achieved, especially for NOx, combined with good driveability, power output, and fuel economy. The development and performance of the system, and the test procedures used, are described in detail, and its future potential and limitations are discussed.
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Topic
Citation
Engh, G. and Wallman, S., "Development of the Volvo Lambda-Sond System," SAE Technical Paper 770295, 1977, https://doi.org/10.4271/770295.Also In
References
- Rivard J. G. “Closed Loop Electronic Fuel Injection Control of the Internal Combustion Engine” SAE Paper 730005 International Automotive Engineering Congress Detroit, Michigan 1973
- Gorille I. Rittmannsberger N. Werner P. “Bosch Electronic Fuel Injection with Closed Loop Control” Paper 750368 SAE International Congress Detroit February 1975
- Fleming W. J. Howarth D. S. Eddy D. S. “Sensor for On-Vehicle Detection of Engine Exhaust Gas Composition” SAE Paper 730575 May 1973
- Dueker H. Friese K. H. Haecker W. D. “Ceramic Aspects of the Bosch Lambda-Sensor” SAE Paper 750223 February 1975
- Fleming W. J. “Sensitivity of the Zirconia Oxygen Sensor to Temperature and Flow Rate of Exhaust Gas” SAE Paper 760020 February 1976
- Zechnall R. Bauman G. Eisele H. SAE National Automobile Engineering Meeting
- Cohn J. G. Mannion W. A. Thompson C. E. Hansel J. G. “Effect of Three Way Conversion Catalyst Operation on the Chemical State of Automotive Sulfur Emissions” SAE Paper 750096 February 1975