MARSHALL, Mich.–(BUSINESS WIRE)–Power management company Eaton announced today its newest Supercharger –
TVS2 – which improves vehicle manufacturers’ ability to deliver an
optimal single boosted application, or to pair this device with other
boosting technologies in order to deliver compound boosting solutions
for improved engine performance. The announcement came at the 20th
Supercharging Conference in Dresden, Germany.
“This latest innovation within our boosting portfolio delivers on the
key areas that our customers have the most interest in, including
efficiency, weight reduction, improved engine performance and the
ability to better package supercharger devices within existing and
future architectures,” said Brian Contat, product director, Boosting,
Eaton’s Vehicle Group. “With the demand for greater engine efficiency
and power density, products such as TVS2 are needed to satisfy the
requirements of these future powertrains.”
TVS2 technology builds on the heritage of Eaton’s supercharger portfolio
by delivering significant improvements in efficiency and increased
capability that have not previously been possible. The efficiency
improvements have been achieved through a rotor design that improves the
internal aerodynamics. Key elements of this new design include:
Rotor profile changes to reduce the clearance between the rotors
reducing internal leakage
Modifying the twist of the rotors to shift the peak efficiency to a
location that improves overall fuel economy
Adding new porting features that eliminate unnecessary compression of
Combined, these items deliver 10 to 16 percent improvement in isentropic
efficiency in the targeted operating zones compared to the TVS® R410
product. The efficiency improvement also reduces the power required to
drive the supercharger resulting in improved fuel economy.
The low speed airflow has been improved by more than 30 percent and
enables increased torque at low engine speed. This improved flow, along
with the supercharger’s benchmark transient response, will deliver
smooth and effortless acceleration. Combining TVS2 with a turbocharger
on gasoline engines can yield specific torque output greater than 240
Nm/L (177 lb-ft/L) with power output in excess of 190 hp/L (142 kW/L)
while maintaining the driving response of larger displacement engines.
As an example, a 2.0 liter engine equipped with a compound boost system
including a TVS2 supercharger could deliver greater than 480 Nm (350
lb-ft) of torque and 380 hp (283 kW). Such an engine could be utilized
in larger vehicles because of the excellent transient response and
airflow capability of TVS2.
TVS2 is more than 25 percent lighter compared to the previous generation
of product, incorporating many lightweight components and new interface
locations resulting in an overall smaller package. With increasing
boosting system complexities, mass reduction targets were a key goal of
A key application target of the TVS2 product is a Turbo-Super system
that requires the supercharger to operate in a high pressure environment
located after the turbocharger. TVS2 incorporates high pressure seals
that can withstand pressurized environments, along with an increased
airflow range that provides system level benefits and efficiency
optimization. To achieve the higher airflow range, TVS2 incorporates a
full ball bearing system that enables temporary speeds up to 30,000 rpm,
which is a 25 percent increase over current offerings.
The higher speeds and increased boost pressures created noise, vibration
and harshness (NVH) challenges, so the TVS2 design includes a new
backflow port that reduces noise without impacting airflow or
efficiency. A micro-perforated panel technology enables targeted noise
treatment, resulting in a decibel level improvement of up to 8 dB at low
TVS2 is part of the Vehicle Group’s total engine air management
portfolio, which includes several Supercharger offerings, engine valves
(including standard, exotic materials, and hollow technologies) and
advanced valve actuation technologies (cylinder deactivation, variable
valve lift, dynamic cylinder deactivation, and decompression engine
brake). Eaton’s hollow valves are used in boosted and/or downsized
applications due to their ability to withstand higher temperatures,
improve valvetrain dynamics, and reduce system weight by as much 10-15
percent per valve. Eaton is the world’s leading supplier of engine
valves for automotive and commercial vehicle applications.
With regulations throughout the world calling for improved fuel economy
and emission reductions, vehicle manufacturers are rapidly moving to
smaller displacement engines in order to meet these global requirements.
The challenge is to deliver smaller powertrains without a reduction in
overall vehicle performance. Suppliers of powertrain components – such
as Eaton – are working with customers to help them meet these challenges
through new products and systems that incorporate new designs, new
materials, advanced engineering and overall integration with the engine.
Eaton supplies Superchargers to leading vehicle manufacturers throughout
the world, including Audi, General Motors, Jaguar Land Rover and Volvo.
Eaton is a power management company with 2014 sales of $22.6 billion.
Eaton provides energy-efficient solutions that help our customers
effectively manage electrical, hydraulic and mechanical power more
efficiently, safely and sustainably. Eaton has approximately 102,000
employees and sells products to customers in more than 175 countries.
For more information, visit www.eaton.com.