driving clean technology

driving clean technology
The Emissions Challenge
Tier IV EU Emissions regulations (homogenised with US regulations)
The Emissions Challenge
Tier IVa Transient Emissions Testing (Non-Road Transient Cycle,
NRTC), 2011 for 1106E
Also, Lifetime Emissions Not to Exceed (NTE) Standards
US EPA estimates 1-3% vehicle purchase price increase for
equipment to meet T4 standards (up to $6,900 for a $230k 175hp
bulldozer)
Source: Automotive Council UK; Commercial Vehicle& Off-highway Low Carbon
Technology Roadmap
Source: Automotive Council UK; Commercial Vehicle& Off-highway Low Carbon
Technology Roadmap
Source: Automotive Council UK; Commercial Vehicle& Off-highway Low Carbon
Technology Roadmap
Concept Overview
Full Electric Turbocharger Technology
Splits a turbo in two:
Turbine Generator
Electric Compressor
Turbine-Generator
Power Electronics
and Control
•
•
•
Fully electric
Highly efficient
Power on demand
E-Supercharger
State 1: Acceleration
Stored energy
powers the
compressor
Energy Storage
Back-pressure
is minimised
Power Electronics
and Control
Turbine inertia
is not important
E-Supercharger
State 2: Charging
Energy Storage
Turbine-Generator
Power Electronics
and Control
Waste energy from the
exhaust is recovered and
stored
Turbine-Generator is
complimentary to VGT
Optimum exhaust energy
capture achieved through
variable speed turbine control
State 3: Steady-State
High-efficiency electrical
architecture transfers power
Turbine-Generator
Large turbine and
independent impeller
speeds
improve efficiency
Power Electronics
and Control
E-Supercharger
Optimised combustion due
to precise control of air
flow
Optimised Compressor Performance
Optimised Turbine Efficiency
Test Results
4.4L Off-Highway Diesel Engine
Boosted with FullElectricTT
Phase 1: Compressor Testing
Aeristech e-Booster
•
Boost 2.1bar
•
14kw Shaft Power
•
Speed 120krpm
•
Aerodynamic, ŋ = 76%
•
Inverter to Shaft Power
efficiency of 76 – 88%
e-Booster Acceleration (1)
Speed Range (krpm)
60 - 100
Boost (bar)
0.51
Time (s)
0.38
e-Booster Acceleration (2)
Data Set Speed Range (krpm)
1
75 - 115
2
90 - 115
3
75 - 115
1
Boost (bar)
0.62
0.43
0.65
2
Time (s)
0.50
0.40
0.60
3
Phase 2: Engine Testing
Using Conventional Turbo: Improved Response by Aggressive Fuelling
Load Step Response, 1200rpm
Aggressive Fuelling, Impact on Emissions
Load Step Response, 1200rpm
Retaining Standard Smoke Limit: Aeristech vs Conventional Turbo
Load Step Response, 1200rpm
Engine RPM
Throttle
Torque
Retaining Standard Smoke Limit: Aeristech vs Conventional Turbo
Load Step Response, 1200rpm
Pedal Position
Fuel Demand
Component Technologies
Motors, Generators, and
Control Technology
Patented Motor Control
Fastest Accelerating / Most Power Dense
Control by the millisecond
Compact, low mass, low inertia
Electrical efficiency nearing 95%
Example 33kW motor:
•
150,000 rpm
•
0.5 secs acceleration to operating speed
Electrical switching frequency is lower than
conventional motor drives delivering higher
efficiency and torque density. This allows
exceptionally accurate high-transient motor
control.
• Eliminates turbo lag
• Increases fuel efficiency
• Lowers emissions
• Affordable
• Fully electric air path control
FETT Development @ Aeristech
• 50+ hours running time across motor platforms
at speeds of up to 150krpm
• Supercharger efficiency mapping
• Power Electronics and Control System
Development for high transient response
• Engine test cell demonstrators:
• On-engine turbine generator testing
• Load step response engine testing
• Engine Modelling and ECU development
Aeristech and Partners’ Technical Competencies
Superchargers and
Turbine-Generators
Design
Thermal Design,
Rotor Dynamics,
Bearings,
ElectroMagnetics,
Lubrication, High
Temp Metallurgy
Bearing Suspension
/ Damping,
Rotor Geometry,
Stator Geometry,
Engine Modelling
Manufacture
/ Build
Housing Components, Rotor, Bearings,
Electro-Magnetics, Lubrication, Bearing
Suspension / Damping, Stator, Cooling
System, Spline manufacture
Advanced Materials (Ceramics)
Test
Test Motors, Rotordynamics, Durability,
Thermal range, Performance (Load,Speed),
Efficiency, Test Cell Evaluation
Control Units
Motor Control
Generator Control
Sensors, EMI
Communication
Power Electronics
Thermal
Management
ES Interface
Power Conversion
Battery Monitoring
Battery Pack
Component Sourcing, PCB Build
Miniaturised components, Thermal plates /
heat transfer surfaces
High Power Charge / Discharge
Thermal Monitoring
How can we Work Together?
• Engine Modelling
• Prototype design and development
• Control System & ECU Development
• Access to IP
• Access to Supply Chain
• Engine Testing
• Technical Programme Management
Development Strategy
Intellectual Property
• Patented (UK, pending elsewhere)
FullElectric turbocharging enabled by variable current and
frequency control
• Patent Pending (worldwide)
Control architecture capable of running high-speed motors
with orders of magnitude lower electrical switching frequency
• Intellectual Property in the Pipeline for Patent
Power handling, DC/DC conversion, etc.
Business model
• Aeristech is a developer of FullElectricTT. The business model is to partner
with existing automotive suppliers to license FullElectricTT the auto supply
chain within 2-3 years.
• Aeristech is accelerating the process by developing engine demonstrations
with engine and vehicle manufacturers. This offers trade buyers a platform
technology & ready customers.
• Trade Buyers or licensees will include engine manufacturers and turbo
manufacturers such as Honeywell, BorgWarner, Cummins, & others
including Continental and Bosch Mahle.
Bryn Richards
Chief Technical Officer
Mobile: +44 7906 517686
Email: bryn.richards@aeristech.co.uk
Unit G
Princes Drive Industrial Estate
Coventry Road
Kenilworth
Warwickshire CV8 2FD
Telephone: +44 1926 258422
Email: info@aeristech.co.uk
Web: www.aeristech.co.uk