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Liebherr and Tula Join Research Activities

Switzerland–(BUSINESS WIRE)–At the International Engine Congress in
Baden-Baden (Germany), Liebherr-Components AG and U.S.-based Tula Technology
presented the results of their joint study on heavy machinery. Together, the
companies carried out research on reducing greenhouse gases (GHG) and
nitrogen oxides (NOX) produced by heavy-duty equipment. Based on
simulations, Tula’s diesel Dynamic Skip Fire (dDSFT) software allows the
reduction of NOX tailpipe emissions by 41% and carbon dioxide (CO2) by 9.5%.
For this study, Liebherr Machines Bulle SA provided its D966 engine that
operates in a variety of applications, like mobile or maritime cranes and
wheel loaders.

The results of the new study indicate Tula’s diesel Dynamic Skip Fire
(dDSFT) was effective in reducing tailpipe emissions of nitrogen oxides
(NOx) by 41% and carbon dioxide (CO2) by 9.5% in a Liebherr D966 engine
operating a mobile crane.

The results of the research could influence the development or manufacturing
of off-road equipment worldwide in a positive way. Therefore,
Liebherr-Components will continue its activities in designing a “proof of
concept” hardware for the integration of Tula’s dDSF software into their
engine system. The D966, a very compact 13.5L 6-cylinder diesel engine, will
also be used in further tests. In the next step, Liebherr will consider the
integration of the dDSF software into other engines in its portfolio.

“Liebherr is a forward-thinking company focusing already today on the
challenges that customers around the world will face tomorrow,” says Ulrich
Weiss, Managing Director for Research and Development of Combustion Engines
at Liebherr Machines Bulle SA. “The reduction of greenhouse gases and
nitrogen oxide emissions is the goal that we strive to achieve, while
continuously improving our engine’s performance.” The results of the joint
study indicate that dDSF plays an important role in addressing these
challenges, being part of future solutions, which will help in reaching zero

Efficient engine operation and low level of tailpipe emissions

R. Scott Bailey, the President and Chief Executive Officer of Tula
Technology, explains: “At Tula, we are driven by a passion to increase
efficiency in engines and motors of all types and also improve the
environment. While there are existing regulations to reduce emissions in
off-road machinery and vehicles, more stringent standards are expected
within the decade. To comply, equipment manufacturers need solutions like
our patented dDSF software to operate engines more efficiently and produce
dramatically lower levels of tailpipe emissions.”

Tula’s technologies provide cost-effective solutions that are proven to
increase engine efficiency. In series production since 2018, Dynamic Skip
Fire (DSFR) uses patented algorithms that choose to skip or fire individual
cylinders dynamically to meet an engine’s torque demands. This enables
near-peak engine efficiency for cleaner burning, as well as more
fuel-efficient vehicles. Noise and vibration are proactively mitigated by
manipulating the firing pattern and cylinder loading. As a result, DSF has
been deployed in more than 1.5 million passenger vehicles to date. The
released study adds to the growing list of successful applications of Tula’s
technology for diesel dDSF, including passenger cars, commercial vehicles
and heavy machinery – with its main goal to reduce GHG and NOX as major
contributors to global warming.

About Tula Technology, Inc.

Silicon Valley-based Tula Technology provides innovative award-winning
software controls to optimize propulsion efficiency and emissions across the
mobility spectrum, including gasoline-powered, diesel, alternative fuel,
hybrid, and electric vehicles. Tula’s culture of innovation has resulted in
breakthrough technologies and a robust global patent portfolio of more than
380 patents issued and pending. Tula Technology is a privately held company
backed by Sequoia Capital, Sigma Partners, Khosla Ventures, GM Ventures,
BorgWarner and Franklin Templeton. More information is available at

About Liebherr-Components AG

In this segment, the Liebherr Group specialises in the development, design,
and manufacturing of high-performance components in the field of mechanical,
hydraulic and electric drive and control technology. Liebherr-Component
Technologies AG, based in Bulle (Switzerland), coordinates all activities in
the Components product segment. The extensive product range includes
combustion engines, injection systems, engine control units, axial piston
pumps and motors, hydraulic cylinders, slewing bearings, gearboxes and
winches, switchgear, electronic and power electronics components, and
software. The high-quality components are used in cranes and earthmoving
machinery, in the mining industry, maritime applications, wind turbines,
automotive engineering or in aviation and transport technology. Synergy
effects in other product segments of the Liebherr Group are used to drive
continuous technological development.

About the Liebherr Group

The Liebherr Group is a family-run technology company with a highly
diversified product portfolio. The company is one of the largest
construction equipment manufacturers in the world. It also provides
high-quality and user-oriented products and services in a wide range of
other areas. The Liebherr Group includes over 140 companies across all
continents. In 2020, it employed around 48,000 staff and achieved combined
revenues of over 10.3 billion euros. Liebherr was founded in Kirchdorf an
der Iller in Southern Germany in 1949. Since then, the employees have been
pursuing the goal of achieving continuous technological innovation, and
bringing industry-leading solutions to its customers.

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