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Waste Heat Recovery from Combustion Engines Gunnar Latz PhD Student

Waste Heat Recovery from Combustion Engines Gunnar Latz PhD Student Chalmers University of Technology. Energirelaterad fordonsforskning Göteborg 09.10.2014. Project facts. Program : Fordonsstrategisk Forskning och Innovation (FFI) Project start/end : 01/2014 – 06/2015 (2. Phase)

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Waste Heat Recovery from Combustion Engines Gunnar Latz PhD Student

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  1. Waste Heat Recovery from Combustion Engines Gunnar Latz PhD Student Chalmers University ofTechnology Energirelaterad fordonsforskning Göteborg 09.10.2014

  2. Project facts • Program:FordonsstrategiskForskningoch Innovation (FFI) • Project start/end:01/2014 – 06/2015 (2. Phase) • Project leader:Ingemar Denbratt, Chalmers • Budget:1.195 kSEK per university (2014)

  3. Project organisation The project is performed and coordinated by the three Swedish competence centers in combustiontechnology KCFP (Lund University) Kompetenscentrum Förbränningsprocesser CCGEx (KTH) CompetenceCenter for Gas Exchange CERC (Chalmers) CombustionEngine Research Center Volvo Car Corporation

  4. Motivation – Energy balance ~21 % Coolant and radiation Fuel Energy (100 %) Mechanical Energy ~42 % 46 % ~11 % ~15 % ~11 % Heat recovery Charge air cooler (200°C) Exhaust gas (250°C) EGR (450°C) Source: GT-Power model for Volvo MD13 engine

  5. Project goals • Evaluation of different heat-recovery technologies • Identifying gaps in knowledge for the respective technology • Creating simulation models and validate them by means of experiments or available experimental data • Providing scenarios for the applicability both in light duty and heavy duty vehicles

  6. CCGEx Project: Turbocompound PhD Student: Habib Aghaali (sinceMarch 2012, before: Gustav Ericsson) Senior researcher: Hans-Erik Ångström

  7. Fuelconsumptionimprovement [%] Turbocompound + DividedExhaustPeriod (DEP) + ExternallyDividedExhaustPeriod (ExDEP)  Potential to decrease fuel consumption up to 4 %

  8. CERC Project: RankineCycle PhD Student: Gunnar Latz Senior researcher: Sven Andersson, Karin Munch

  9. Simulation models Experiments Design data Evaporator Waste heat (e.g. exhaust gas) Expansion device Fluid pump Work output Rankine Cycle Condenser Validation data  Potential todecreasefuelconsumption by 4 – 6 %

  10. KCFP Project: Humid Air Motor (HAM) PhD Student:Prakash Narayanan (sinceOctober 2011, before: Mengqin Shen) Senior researcher: Martin Tunér, Per Tunestål

  11. Engine Humidifier • Reduced in-cylinder temperatures  Reduction of NOx • Benefits of the HAM concept over conventional EGR engine: • Lower heat losses • “Free” vapor expansion over the turbine • Reduction of in-cylinder pumping losses  Potential todecreasefuelconsumptionupto ~8% (best operating point)

  12. Thank you for your attention!

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