EGR.pdf - 2018 South Korea’s BMW Engine Fire Case Study Save Group About the case ● ● ● ● Early March 2018 6 BMW fires confirmed(2007-2014

EGR.pdf - 2018 South Korea’s BMW Engine Fire Case Study...

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2018 South Korea’s BMW Engine Fire Case Study Save Group
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About the case Early March 2018, 6 BMW fires confirmed (2007-2014 models) In 2015, 7 cases in a month (fuel pump defect and 29,000 cars recalled) Main reason of fire: EGR cooler cracking Investigation team suggesting BMW aware of defects beforehand OCt 2015: Head office discussed design change Internal documents on EGR cooler cracking found dating to 2017 Recall of 42 models >106,000 vehicles in South Korea >200,000 units in Europe, Germany, UK, France, Italy
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Causes of the fire Root cause: EGR cooler leakage Conditions for thermal event Coolant leak from EGR High vehicle mileage Driving conditions (constant high speed) Bypass valve open
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EXHAUST RECIRCULATION SYSTEM (EGR) Exhaust gas recirculation (EGR) is an emission control technology allowing significant NOx emission reductions from most types of diesel engines: from light-duty engines through medium- and heavy-duty engine applications right up to low-speed, two-stroke marine engines.
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