An Engine System Approach to Exhaust Waste Heat Recovery - EERE

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Summary-0.4%• Effect of lowercomponentefficienciesStack Recovery(4.0%)Port Insul.(0.5%)PipingIntercooling(0.5%)(1.3%)Strategy OptimizationHigh Eff.HP Turbine(2.0%)-0.7%• Used RND turbine• Mixed Flow ND will improve-0.5%• HP compressor ~ ½ ofgoal achieved• No change yet to LP compressor* Turbocompound or Bottoming CycleCompressors(0.7%)“Mid-Program” Proof-of-Concept Demo*High Eff.LP Turbine(1.0%)Thermal Eff.ImprovementDesign point demo - target: +9.0%Design point demo - achieved: +7.0%*Not commercially validated-0.4%• Used radial turbine map(better packaging vs axial)“Virtual” Demo:Engine Simulationusing measuredcomponentperformance mapsCaterpillar Non-Confidential
Port Insul.(0.5%)Piping(0.5%)SummaryIntercooling(1.3%)Stack Recovery(4.0%)Strategy OptimizationHigh Eff.HP Turbine(2.0%)Without theseelements, value ofturbocompound isjust 2%* Turbocompound or Bottoming CycleCompressors(0.7%)High Eff.LP Turbine(1.0%)“Mid-Program” Proof-of-Concept Demo*Thermal Eff.ImprovementDesign point demo - target: +9.0%Design point demo - achieved: +7.0%“Virtual” Demo:Engine Simulationusing measuredcomponentperformance maps*Not commercially validatedCaterpillar Non-Confidential
Page 2 and 3: DisclaimerThe work described in thi
Page 5 and 6: Program ObjectiveDevelop components
Page 7 and 8: An integrated system solutionto was
Page 9 and 10: AGENDA• EWHR Program Objectives,
Page 11 and 12: Technical Progress - HP Turbine +2%
Page 13 and 14: Technical Progress - HP Turbine +2%
Page 15 and 16: Technical Progress - LP TurbineTarg
Page 17 and 18: Technical Progress - Stack Recovery
Page 19: Technical Progress - Stack Recovery
Page 23: Caterpillar Thanks:Acknowledgements

An Engine System Approach to Exhaust Waste Heat Recovery - EERE

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