Lambda sensors

The Modern Oxygen Sensor | A 5Vehicle emissions are a major factor in the design ofnew vehicles. Bosch research and development in thearea of engine management system and producttechnology has seen the introduction of “Broadband”oxygen sensors, providing increased scope of operationof the oxygen sensor for control of mixture valuesoutside of the normal control range. Recent years haveseen many changes in the Australian vehicle market. Inearly 2006, stringent Euro III vehicle emission standardswere implemented, further assisting in the reduction ofharmful vehicle emissions and greenhouse gasemissions from motor vehicles. Due to this requirement,there is a significant increase in the amount of newvehicles utilising “Broadband” oxygen sensor technologyas well as the implementation of Control (pre catalyst)and Diagnosis (post catalyst) oxygen sensor systemconfiguration, resulting in an increase in the number ofoxygen sensors installed in the vehicle. The monitoringand function of the oxygen sensor is now more thanever a major influence in engine management systemoperation. More focus must be placed on the regulartesting and replacement of faulty oxygen sensors tomaintain optimal vehicle performance.Diesel powered cars now make up approximately 20% ofall new passenger vehicle sales. Many of these moderncommon rail diesel systems also utilise the latest designevolution of Bosch “Broadband” oxygen sensor, the LSU4.9 series. These units provide fast accurate data to theengine management system, are able to withstand thedifferent environmental conditions experienced withdiesel applications as well as offering superior servicelife.2009 | 2010 Bosch Automotive Aftermarket