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.
Development of the Volvo Lambda-Sond System
Sae Technical Papers
1977 International Automotive Engineering Congress and Exposition ; 1977
1977-02-01
Conference paper
English
Development of the Volvo Lambda-Sond System
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