10th Symposium "The Working Process of the Internal Combustion Engine"
Otto Engines at High Load Tests
Authors
Ernst Winklhofer, Paul Kapus, Claus Knorz, Josef Moik, AVL List GmbH, Graz
Year
2005
Summary
BMEP targets of 20 bar are common practice for modern turbocharged SI engines and test engines have proven levels far beyond this limit. What about the risk such engines bear with respect to long term combustion stability? What are the mechanisms to be especially observed in such high load engines in order to prohibit irregular combustion and thermal breakdown events? The paper uses experimental examples to demonstrate irregular ignition and combustion mechanisms linked to mixture formation, lube oil circulation and thermal load. This results in practical advice for • Interpretation of engine damage patterns • Measurement techniques for high risk engine tests • Sensors for measurement and control of high load durability tests.
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