E-Turbo Technology

The growing trends toward hybridization opens up possibilities to transfer electric boosting technology from racetrack to road. Garrett is pioneering E-Turbo technology to deliver superior performance, fuel economy and emissions, by integrating state-of-the-art, ultra highspeed electric motors and power electronics into it’s turbocharger product families.

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INCREASED POWER & EFFICIENCY

Electric Turbo Innovation

Electrified Turbos show exciting potential and equal applicability in both light & commercial vehicles, in all fuels such as gasoline, diesel and natural gas (CNG)

Light Vehicle Gasoline

E-Turbo | A Key Technology for EU7

Garrett has created an E-Turbo demonstration vehicle that is a successful representation of how an electrified boosting solution can increase engine power and torque while allowing the engine to operate at Lambda 1, providing energy recuperation to the vehicle’s electrical system.

Electrifying a turbocharger removes the constraint of needing a small turbine with excellent efficiency to drive the compressor at low flow rates. Instead, it allows us to right size the turbine for Lambda 1 rated power.

Lambda 1 (or stoichiometric air/fuel ratio) is a key part of future Legislation.

Strong industry macros indicate that all forms of hybridization set to grow fast (MHEV, HEV, PHEV)

The technologies will be used to meet regional, national and local fuel economy and air quality targets

e.g. Europe
CO2 -15% by 2025, -37,5% by 2030 (vs 2020)
RDE – City, Extra Urban & Highway
City Access – Tolls & Parking Charges
Gasoline – Particulates & Lambda 1
Diesel – NOx & NH3

Powertrains must be hybridized to meet the fuel economy and emission targets of EU7

E-Turbo provides an integrated, compact and balanced solution that delivers the additional functionality of Energy Recuperation (Efficient energy Management / Positive effect on state of charge SOC). Any penalty in inertia can therefore be more than compensated for by an electric motor and the addition of a wide-range Compressor to improve low-end response and extend high-end performance simultaneously.

If you are interested to learn more, request to download the whitepaper below.

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Performance and CO2 potential at EU7 Boundary Conditions

Key Features

EU7 Mainstream Concept

  • Lambda 1Full Map @ 980°C
  • Engine Parameters (Power)16% Power
  • Engine Parameters (Torque)10,5% Torque
  • Transient4x Torque Gradient at 1500 rpm
  • Torque Consistency across Speed Range
  • Energy Management> 60% Kinetic energy recovery in a Tip Out (Current, Potential >100%)
  • RECUPERATION POTENTIAL (under investigation)
  • CO2 POTENTIAL (under investigation)

E-Turbo Key Benefits

Downsizing

eg. 3L --> 2L or 2L --> 1,5L
8 to 6 to 4 to 3 cylinders

Downspeeding

Shift Strategies
CO2 / Fuel savings

ENABLE Advanced Combustion

Λ1 , Lean, GDCI

HIGH EFFICIENCY AERODYNAMICS

New high efficiency concepts
Fewer constraints, wider design space

Recuperation & Turbocompounding

Harvest waste exhaust energy when available
(Based on “cost of energy”)

SMART HYBRIDISATION

Drive electrically when Engine inefficient
Drive on the Engine when Hybrid System efficient

Thermal Management

Cold start assist / Load control

TwoStage

Rematching & Transition

Energy Management

Manage State of Charge vs an eHorizon
Anticipate the road ahead

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