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Simulation and Validation of the V-Charge Mechanical Variable Drive Boosting System
14th September 2016
Richard Dunne BEng
Business Development Manager
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Torotrak Offer Three Technologies to Improve Performance, Fuel Efficiency and Emissions
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Summary of Contents
• What is V-Charge?
• 1.0L V-Charge EcoBoost – Introduction
• 1.0L V-Charge EcoBoost – Results
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Future Automotive Powertrain Technology is
Driven by Emission Legislation
• The Internal Combustion Engine (ICE) is
the largest source of vehicle emissions
• “Boosting” an Internal Combustion Engine
allows greater power output from smaller
engines
• Conventional “Boosting” systems
compromise fuel economy and / or
driveability
• This has driven Torotrak to develop the
solution known as V-Charge
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V-Charge is the Solution
Traction
Epicyclic
3rd Party
Compressor
20W Linear
Actuator
Toroidal
Variator
FEAD Pulley
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Summary of Contents
• What is V-Charge?
• 1.0L V-Charge EcoBoost – Introduction
• 1.0L V-Charge EcoBoost – Results
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V-Charge has been Independently Validated the
Simulated V-Charge Performance and Driveability• Collaborative InnovateUK part funded project
• Project partners, included:
• Torotrak Group – Lead Partner
• University of Bath – Simulation & Dyno Testing
• Ford Motor Company
• Global Tier 1 Boosting Supplier
• Base engine: 1.0L Ford Fox (EcoBoost) engine
• 2 stage “Super-Turbo” boosting configuration
• Project included On-Engine dyno and in vehicle
testing
• Ford Focus demonstrator vehicle on-show at
LCV (Skid Pan #19)
• Ford S-Max demonstrator vehicle available to
drive later in 2016
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Torotrak Targeted 1.5L Torque and Power Output From
a 1.0L Engine (140Nm @ 1000rpm & 240Nm @ 1400rpm)
60
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260
60 80 100 120 140 160 180 200
En
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Nm
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Engine Power (HP)
Current Focus 1.0L EcoBoost Current Focus / S-Max 1.5L EcoBoost
1.0L V-Charge EcoBoost Target
60
80
100
120
140
160
180
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220
240
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0 1000 2000 3000 4000 5000 6000
En
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Nm
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Engine Speed (RPM)
Standard 1.0L EcoBoost Original Project Target
Standard 1.5L EcoBoost
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Summary of Contents
• What is V-Charge?
• 1.0L V-Charge EcoBoost – Introduction
• 1.0L V-Charge EcoBoost – Results
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0 20 40 60 80 100 120 140
Delt
a B
SFC
%
Engine Torque (Nm)
WLTC Part-Load BSFC “Mini-Map” Comparison
Between a Standard 1.0L and the V-Charge 1.0L
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10 11
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1000 1500 2000 2500 3000 3500
En
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e T
orq
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Nm
)
Engine Speed (rpm)
Standard 1.0L EcoBoost Original Project Target
Standard 1.5L EcoBoost Mini-Map Data Points Mini-Map
1 - 4
Mini-Map
5 - 9
Mini-Map
10 - 14
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500 1500 2500 3500 4500 5500 6500
En
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Nm
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Engine Speed (rpm)
Standard 1.0L EcoBoost Original Project Target
Standard 1.5L EcoBoost V-Charge 1.0L EcoBoost
A.At 1000rpm V-Charge
delivers:
• 145Nm Steady State
• 200Nm Transient
B. V-Charge achieved the
target of 240Nm (Steady
State) from 1400rpm
C. Additional investigation
is ongoing to resolve the
power restriction
The V-Charge 1.0L Engine Outperformed the
Original 1.5L Engine Torque Targets
STEADY STATE
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V-Charge is a Mechanical Variable Drive
Supercharger that Delivers Controllable On-
Demand High Power Boosting
• High air power capacity: up to 17kW
• Rapid ratio change capability: <400 ms
• Low power actuation system: 20W
• Wide CVT variable speed range: 10x ratio
spread (0.28-2.8)
• No external clutch required
• Excellent NVH characteristics: no attenuation
required
• Low integration & system cost
• V-Charge enables aggressive downsizing
and downspeeding of engines for CO2
reduction without performance or fuel
economy compromise
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Thank-youRichard DunneBusiness Development Manager – Torotrak Group
Direct: +44 (0) 1327 855198
Mobile: +44 (0) 7534 870686
Email: [email protected]
Address: Units 4-6, Silverstone Technology Park, Northamptonshire, NN12 8GX
