Mercedes Benz

******************************************************************** 2010 Mercedes Benz E 63 AMG Sedan (212.077) V8-6.3L (156.985) Copyright ? 2013, ALLDATA 10.52SS Page 1 Vehicle: All Technical Service Bulletins Description of the Adaptive Mixture Control as Part of Lambda Control Description of the adaptive mixture control as part of the lambda control The catalytic after treatment of the exhaust gas using a closed loop three way catalytic converter has proven to be a highly effective means of meeting the current low emission limits. Approximately 14.7 kg of air are required for complete combustion of 1 kg of gasoline. The excess air factor lambda is used to define this A/F ratio. The engine must be operated within a very narrow range in which lambda = 1 +/- 0.005 . Such precision can only be achieved with precise closed loop control of the A/F mixture with a lambda oxygen sensor installed upstream of the converter. A second lambda sensor downstream of the catal...