HyPACE Hybrid Petrol Advanced Combustion Engine

Transcription

1 HyPACE Hybrid Petrl Advanced Cmbustin Engine UniCEG 5 th September 18 Adrian Cper, Phil Stansfield, Jnathan Hall, Mike Bassett & Simn Reader MAHLE Pwertrain Limited Jnathan Hartland & Li Ca Jaguar Land Rver Andrew Taylr BrgWarner Turb Systems 1

2 Cnsrtium MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

3 Cnsrtium HyPACE Aims: Apply a nvel cmbinatin f technlgies t achieve: 1% vehicle fuel ecnmy benefit Specific utput f 9-1 kw/l Maximise area f λ = 1 peratin Target applicatin in MHEV & PHEV platfrms Evaluate after treatment systems t meet frthcming requirements 3 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

4 Engine Jaguar Land Rver Ingenium.l TGDI Revised intake prt BrgWarner eturb HP & LP EGR* * Supplied by BrgWarner Emissins Systems MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

5 Schematic Main Thrttle Frm Charge Air Cler (CAC) BrgWarner Turb 8V eturb Variable Gemetry Turbine External wastegate Cated cmpressr wheel Adaptr Cler High Pressure EGR* Shut-ff wastegate in adaptr Lw-temp cler Pst cler valve WG * Supplied by BrgWarner Emissins Systems BASELINE AFTERTREATMENT WG T CAC Lw Pressure EGR* Mid-catalyst take-ff Lw-temp cler Pst cler valve * Supplied by BrgWarner Emissins Systems Cler MAHLE Flexible ECU Cntrl f all systems 5 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

6 Brg Warner eturb Electrical assistance Imprved transient respnse Electrical generatin Waste energy recvery Specificatin: System Vltage Peak Current Capability Cntinuus Rating Peak Rating Cmpressr Turbine Maximum Turb Speed Cmpressr Outlet Temperature Turbine Inlet Temperature Wastegate 8V A pk A rms, 1kW maximum 8A rms, 1kW maximum 55mm 5mm Variable Gemetry Turbine BV5, rpm C Maximum 15 C Maximum Wastegate with eactuatr MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

7 Brg Warner eturb Cmpressr Similar t baseline Imprved peak efficiency Imprved mass flw capability Turbine Baseline equivalent t VTG % clsed VTG allws wide range f peratin Main cmpressr pressure rati [-] Cmpressr Maps HyPACE Cmpressr Baseline Cmpressr Nrmalised Turbine Flw [-] Turbine Maps 1% 8% % % % VTG Psitin [% Open] % HyPACE Turbine Baseline Turbine Crrected mass flw rate [kg/s] Expansin Rati [-] 7 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

8 Testing Optimisatin f full-lad perfrmance & bsted regin Transient respnse Waste energy recvery ptential f eturb in drive-cycle regin 5 BSFC [g/whr] Lambda 5 BMEP [bar] 15 1 BMEP [bar] NEDC WLTP RDE Engine Speed [rpm] Engine Speed [rpm] 8 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

9 Transient Respnse Lad step: 15rpm 1-9% Trque Cntrl : Instantaneus pedal and eturb speed demand Maximum mtr trque limited Results + Mtr trque - 1-9% time 7% reductin with maximum assistance Trque [Nm] Trque 35Nm 9% Knee-pint 1%.8s.s.8s.95s 1.s.s Turb Speed [rpm] eturb Pwer [kw] eturb Pwer Time [s] eturb Speed Time [s] Time [s] Baseline.Nm Baseline Limit.Nm.Nm Baseline Limit.Nm.Nm.Nm Baseline Limit.Nm.Nm.Nm.8Nm Baseline Limit.Nm.Nm.Nm.8Nm 1.Nm Baseline Limit.Nm.Nm.Nm.8Nm 1.Nm 1.Nm Baseline Limit 9 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

10 Transient Respnse Increasing electrical assistance Faster 1 9% trque time 7% maximum assistance Mst f benefit available at 1Nm limit Impressive trque rise rates demnstrated Prprtinal t maximum eturb pwer Ttal energy used ver transients similar Transient Time 3.5 Trque Rise Rate 5 1 eturb 1-9% Trque Time [s] Baseline transient time eturb Trque Limit [Nm] Trque Rise Rate [Nm/s] Baseline trque rise rate eturb Trque Limit [Nm] Maximum eturb Pwer [kw] Maximum Electrical eturb Energy Pwer Used [kj] [kw] Maximum Pwer Ttal Energy eturb Trque Limit [Nm] 1 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

11 Waste Energy Recvery Test Methd: sites eturb fixed speed VTG psitin swept CVVL t cntrl lad Results: Maximum electrical generatin Up t 7kW generated Further Analysis: 3rpm 1Nm 3rpm 75Nm Trque [Nm] Maximum eturb Pwer Generatin [kw] Knck Limit 1 Baseline Trque Curve 5 Unassisted Run-up Line eturb Recvery Sweeps Discussin Pints Engine Speed [rpm] 11 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

12 Waste Energy Recvery 3rpm 1Nm Electricity generated as VTG clsed 1.9kW peak Cnstant phasing up t 1.5kW IVC later t maintain lad BSFC Mechanical increases due t higher lsses BSFC Cmbined flat until knck limited N additinal benefit with reduced turb speed eturb Pwer BSFC Mechanical [% delta] eturb Pwer Clse VTG at cnstant turb speed t generate pwer VTG Psitin [% Clsed] BSFC Mechanical VTG Psitin [% Clsed] 5%MFB [ ATDCF] BSFC Cmbined [% delta] Cmbustin Phasing VTG Psitin [% Clsed] BSFC Cmbined VTG Psitin [% Clsed] Inlet Valve Clsing Angle Delta [ ] Inlet Valve Clsing VTG Psitin [% Clsed] Baseline Baseline Fixed Turb Baseline Fixed Speeds: Turb Baseline Fixed Speeds: Turb 8,rpm Fixed Speeds: Turb 8,rpm Speeds: 8,rpm 58,rpm 58,rpm 8,rpm 58,rpm 8,rpm 8,rpm38, rpm Knck Limited Knck Limited Plenum Pressure [kpa] Plenum Pressure VTG Psitin [% Clsed] 1 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

13 Waste Energy Recvery 3rpm 75Nm Initial sweep lad limited N scpe t reduce turb speed Turb speed increased Up t 7kW generated Increased Miller cycle benefit Phasing imprved % BSFC Mechanical ~7kW BSFC cmbined at baseline BSFC eturb Pwer BSFC Mechanical [% delta] eturb Pwer %MFB [ ATDCF] VTG Psitin [% Clsed] VTG Psitin [% Clsed] BSFC Mechanical Baseline Fixed Baseline Turb Baseline Speeds: Fixed Turb Baseline Fixed Speeds: 18, Turb Fixed Speeds: rpm Turb 18, Speeds: 115,rpm 18, 18, 115,rpm 15,rpm 115,rpm15,rpm 135,rpm VTG Psitin [% Clsed] BSFC Cmbined [% delta] Cmbustin Phasing BSFC Cmbined VTG Psitin [% Clsed] Inlet Valve Clsing Angle Delta [ ] Plenum Pressure [kpa] Inlet Valve Clsing 3 Maximum trapped mass VTG Psitin [% Clsed] Plenum Pressure VTG Psitin [% Clsed] 13 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

14 Vehicle Mdelling Drive cycle calculatins: Ptential f eturb fr waste energy recvery 35 Drive Cycle Residency Over Maximum eturb Pwer Generatin [kw] Baseline Trque Curve NEDC WLTP MAHLE RDE NEDC WLTP NEDC 3 Mdel: Jaguar F-PACE 8-speed autmatic gearbx + Vehicle mass fr PHEV Trque [Nm] Drive cycles: NEDC WLTP MAHLE RDE Engine Speed [rpm] 1 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

15 HyPACE Hybrid Petrl Advance Cmbustin Engine Vehicle Mdelling 15 WLTP <3e [g/kwhr] esfc RDE <3 [g/kwhr] esfc Electrical deplyment Electrical deplyment Electrical deplyment Trque [Nm] 5 Trque [Nm] NEDC < [g/kwhr] esfc Trque [Nm] Assumptins 9% efficiency Electrical drive replaces highest BSFC pints Catalyst heating and cld pints excluded Results Up t 3% cycle benefit predicted Ptential fr higher benefits: Lwer pwer t weight rati Dwnsizing Engine Speed [RPM] MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September Engine Speed [RPM] Engine Speed [RPM]

16 Summary Imprved transient respnse, 7% reductin Ptential fr up t -3% cycle benefit frm eturb waste energy recvery Trque [Nm] Electrical deplyment -3% Benefit Engine Speed [RPM] Transient Perfrmance 35 3 Trque [Nm] Time [s] 1 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18

17 Thank yu fr yur kind attentin Questins? 17 MAHLE Pwertrain Ltd., Research & Advanced Engineering, Adrian Cper, 1-September-18