Consistent developm ent of hybrid vehicles at the engine-in-the-loop - PowerPoint PPT Presentation

Consistent developm ent of hybrid vehicles at the engine-in-the-loop testbed Maxim ilian Bier, Matthias Kluin, Prof. Dr. Christian Beidl I nstitute for I nternal Com bustion Engines and Pow ertrain System s Technische Universität Darm stadt apply & innovate 2 0 1 2 I PG Technology Conference 1 8 and 1 9 Septem ber 2 0 1 2 | Ettlingen 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 1

Content Motivation Development process and tools for hybrid powertrains Consistent hybrid operating strategy Testing methodologies for hybrid powertrains Application examples at the engine-in-the-loop testbed Summary 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 2

Strong I ncrease of Param eters in Hybrid Pow ertrains Usage scenario Powertrain Drivability/ Custom er requirem ents architecture fun-to-drive Vehicle param eters Hybrid Component Cost of ownership dimensions Pow ertrains Cost of sales Operating strategy Vehicle size 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 3

Efficient and Coordinated Developm ent of Hybrid Vehicles Efficiency in Developm ent Efficient Developm ent Efficient Operating • Few iteration steps • Trade-Off: • Lowest consumption • Few prototypes possible • Emission limits • Few test vehicles • Driveability • Durability • Determination and validation of optimal configurations • Sophisticated tuning in harmonizing strategy and concept (usage rate of installed components) Consistent Tools, Models and Control Functions 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 4

Content Motivation Development process and tools for hybrid powertrains Consistent hybrid operating strategy Testing methodologies for hybrid powertrains Application examples at the engine-in-the-loop testbed Summary 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 5

Developm ent Tools in the Developm ent Process Requirements System application Architecture System integration System tests Component dimensioning Component test Basic energy management Detailed function and component design 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 6

Architecture Definition and Com ponent Dim ensioning via Reverse Sim ulation Virtual Vehicle Environm ent Exhaust T Gas (t) system m Gas (t) n ICE (t) X Gas (t) T ICE (t) dv(t)/ dt ICE m Fuel (t) Vehicle Fuel α Incl. (t) kinetics tank Operating strategy (HCU) n EM (t) F Wheel (t) T EM (t) Driving EM profiles + Driving Powertrain v(t) P Bat (t) n EG (t) resis- Battery T EG (t) tance EG  Reverse Simulation:  Targets as inputs (velocity, torque, etc.)  Highly comparative results by open loop control  Simple models for fast simulation  Need for basic operating strategy 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 7

Developm ent Tools in the Developm ent Process Requirements System application Architecture System integration System tests Component dimensioning Component test Basic energy management Detailed function and component design 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 8

Detailed Forw ard Sim ulation v act Vehicle Model Driver Model Operating + - Driver Strategy Battery Input ~ = Environment ICE Clutch 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 9

Developm ent Tools in the Developm ent Process Requirements System application Architecture System integration System tests Component dimensioning Component test Basic energy management Detailed function and component design 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 10

Detailed Forw ard Sim ulation and Engine-in-the-Loop ( EiL) RT Simulation Platform v act Vehicle Model Driver Model Operating + - Driver Strategy Battery Input ~ = Environment Klemme 15, alpha TB Automation ICE Clutch System CAN n set Speed Control T meas. n act Converter Dyno MG2 ICE 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 11

Developm ent Tools in the Developm ent Process Requirements System application Architecture System integration System tests Component dimensioning Component test Basic energy management Detailed function and component design 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 12

X-in-the-Loop ( XiL) RT Simulation Platform v act Vehicle Model Driver Model Operating + - Driver Strategy Battery Input Environment Klemme 15, alpha TB Automation System CAN n set Speed Control T meas. n act Converter Battery ~ Simulator. = Dyno MG2 ICE 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 13

in-the-Loop-Sim ulation v act RT Simulation Platform Focus of VKM  Testbed set-up Vehicle Model Driver Model Operating + - Driver Strategy  Application Methods for Battery Input ~ = Operating Strategies Environment Klemme 15, alpha TB Automation ICE Clutch System CAN n ist n set Speed Control T meas. n act Converter Dyno MG2 Vehicle m odels at VKM: Operating Strategy:  Powersplit hybrid  Vehicle-realistic composition  P1 parallel hybrid  Depending on signals provided by real  P2 parallel hybrid components  Boosted Range Extender  Depending on powertrain and vehicle concept 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 14

Content Motivation Development process and tools for hybrid powertrains Consistent hybrid operating strategy Testing methodologies for hybrid powertrains Application examples at the engine-in-the-loop testbed Summary 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 15

Proposed Strategy Structure Operating Strategy Driving Operating Energy Managem ent Driver State State Feedback ( OP-Determ ination, Therm o Managem ent)  SOC  Driver input  Power in  Driver type Low  Road state low voltage Voltage Control of Dynam ics  Track system System  ICE OP information Control  T Cat  Trip  … information Power Auxilia- BCU ECU TCU Electr. ries - + 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 16

Proposed Strategy Structure: State Analysis Operating Strategy  Interpretation of sensor signals Driving Operating Energy Managem ent Driver  Communication with State State Feedback ( OP-Determ ination, Therm o Managem ent) Control Units  Virtual sensors  SOC  Driver input  Power in  Driver type Low  Road state low voltage Voltage Control of Dynam ics  Track system System  ICE OP information Control  T Cat  Trip  … information  Driver input interpretation  Communication with driver assistance systems  High potential for reuse of  Adaptation and prediction functions in different strategies functions 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 17

Proposed Strategy Structure: Operating Point Assignation Operating Strategy  Quasi-stationary  Basic operating point Driving Operating Energy Managem ent Driver Determination State State Feedback ( OP-Determ ination, Therm o Managem ent)  Conditioning functions  SOC  Driver input  Coordination in dynamic  Power in  Driver type Low manouvers:  Road state low voltage Voltage  Engine start Control of Dynam ics  Track system System  ICE OP information  Mode switch Control  T Cat  Trip  Gear shifting  … information  Coordinate power peaks  Facilitation of continuous evolution  Coordinate heat and parallel developm ent  Separation of test procedures provision with heat usage 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 18

Proposed Strategy Structure: Driver Feedback Operating Strategy  Advise for efficient Driving Operating Energy Managem ent Driver driving State State Feedback ( OP-Determ ination, Therm o Managem ent)  Range and Risk information  SOC  Driver input  Power in  Driver type Low  Road state low voltage Voltage Control of Dynam ics  Track system System  ICE OP information Control  T Cat  Trip  … information  High potential for reuse of functions in different strategies 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 19

Content Motivation Development process and tools for hybrid powertrains Consistent hybrid operating strategy Testing methodologies for hybrid powertrains Application examples at the engine-in-the-loop testbed Summary 19 September 2012 | Ettlingen | Institute for Internal Combustion Engines | Matthias Kluin | 20