Lambda sensors

Oxygen Sensor Type Code LSM 11 | D 7Data for Heater Applications cont.Manufacturing lambda tolerance in as-new state (standard deviation 1 s) atexhuast gas temperature of 220 º C and at flow rate of ~ 0.7 m/secat lambda = 1.30 < 0.013at lambda = 1.80 < 0.050Relative sensitivity - sensor voltage/lambda value delta at lambda = 1.300.65 mV/0.01Influence of the exhaust-gas temperature on sensor signal for a temperatureincrease 130 to 230 º C, at a flow rate < 0.7 m/sec, and lambda = 1.30 (delta lambda) < 0.01Influence of heater-voltage change +/- 10% of 12 V at exhaust gas temperatureof 220 º Cat lambda = 1.30; lambda delta change < +/- 0.009at lambda = 1.80; lambda delta change < +/- 0.035Response time at exhaust gas temperature = 220 º C and ~ 0.7 m/sec flow rate.As-new values for the 66% switching point; lambda jump = 1.10 < > 1.30for the jump in the “lean” directionfor the jump in the “rich” directionGuideline value for sensor’s “readiness for control” point to be reached afterswitching on oil burner and sensor heater; exhaust gas temperature ~ 220 º C;flow rate ~ 1.8 m/sec; lambda = 1.45; sensor in exhaust pipe dia. 170mm2.0 sec1.5 sec70 secSensor ageing (lambda value drift) in heating-oil exhaust gas after 1,000continuous burner operation with EL heating oil; measured at exhaust gastemperature of 220 º Cat lambda = 1.30; lambda delta change < +/- 0.012at lambda = 1.80; lambda delta change < +/- 0.052Sensor useful life at exhaust temperature of < 300 º CIn individual cases to bechecked by customer;guideline value ~ 10,000 hours(2) = See characteristic curves on page D42009 | 2010 Bosch Automotive Aftermarket