Cummins and Tula Study of Diesel Dynamic Skip Fire (dDSF™) Shows 74% Reduction in NOx Emissions
April 13 2021 - 6:00AM
Business Wire
5% Reduction in CO2 Emissions Also Verified
in Low-Load Cycle
Cummins Inc. (NYSE: CMI) and Tula Technology, Inc., a leader in
propulsion efficiency, announced today at the Society of Automotive
Engineers World Congress in Detroit the results of their
collaborative study on the effectiveness of Tula’s diesel Dynamic
Skip Fire (dDSF™) in reducing nitrogen oxides (NOx) and carbon
dioxide (CO2) emissions on a Cummins X15 HD Efficiency Series
diesel engine.
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Cummins’ X15 Efficiency Series 6-cylinder
diesel engine enhanced with Tula’s diesel Dynamic Skip Fire (dDSF)
(Photo: Business Wire)
Low-load cycle performance was estimated with a well-calibrated
powertrain simulation tool to accurately capture the low-load
system operation and emissions. This system showed a 74 percent
reduction in NOx and a 5 percent reduction in CO2 compared with
today’s clean diesel technologies. In comparison with current
engine technologies and modifications to the thermal management
techniques, dDSF saved 20% in fuel, validating dDSF as a more
fuel-efficient means of reducing NOx.
Cummins and Tula demonstrated the positive dDSF results in a
Class 8 truck powered by a Cummins X15 HD engine. The dDSF test
results highlight a promising technical advancement for an industry
seeking strategies to address future, more stringent NOx emissions
regulations for diesel engines.
“Our mission at Cummins is to make people’s lives better by
powering a more prosperous world, and we accomplish this through
innovation,” said Lisa Farrell, Director, Accelerated Technology
Center for Cummins Inc. “Tula’s dDSF technology provides
significant benefits to reducing NOx and CO2 emissions under
low-load vehicle operation, which will aid our efforts to produce
more reliable, more powerful engines while meeting our
environmental goals.”
“NOx standards are becoming progressively more stringent for
diesel engines, and meeting those standards is increasingly
challenging, even for a class-leading, efficient engine like the
Cummins X15 HD,” said R. Scott Bailey, president and CEO of Tula
Technology. “Our dDSF is a powerful and unique technology that
enables original equipment manufacturers to significantly reduce
NOx emissions that contribute to smog while simultaneously reducing
fuel consumption and greenhouse gas production. We appreciate the
opportunity to work with Cummins to demonstrate the capability of
our technology.”
Dynamic Skip Fire is an advanced cylinder deactivation control
strategy that makes decisions for an engine’s cylinders on an
individual basis to best meet torque demands while saving fuel and
maintaining performance. Tula’s original Dynamic Skip Fire (DSF®)
software has been shown to significantly reduce CO2 emissions in
gasoline engines and has been in production since 2018 with more
than one million vehicles on the road. dDSF is the Dynamic
Skip Fire application for diesel engines.
About Cummins Inc.
Cummins Inc., a global power leader, is a corporation of
complementary business segments that design, manufacture,
distribute and service a broad portfolio of power solutions. The
company’s products range from diesel, natural gas, electric and
hybrid powertrains and powertrain-related components including
filtration, aftertreatment, turbochargers, fuel systems, controls
systems, air handling systems, automated transmissions, electric
power generation systems, batteries, electrified power systems,
hydrogen generation and fuel cell products. Headquartered in
Columbus, Indiana (U.S.), since its founding in 1919, Cummins
employs approximately 57,825 people committed to powering a more
prosperous world through three global corporate responsibility
priorities critical to healthy communities: education, environment
and equality of opportunity. Cummins serves its customers online,
through a network of company-owned and independent distributor
locations, and through thousands of dealer locations worldwide and
earned about $1.8 billion on sales of $19.8 billion in 2020. See
how Cummins is powering a world that’s always on by accessing news
releases and more information at
https://www.cummins.com/always-on.
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
technology and a robust global patent portfolio of more than 340
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 www.tulatech.com.
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Cummins Inc. Jon Mills Director, External Communications
Jon.mills@cummins.com Tula Technology, Inc. Ram Subramanian
Principal Marketing Strategist ram@tulatech.com Media:
Financial Profiles, Inc. Debbie Douglas Senior Vice President
ddouglas@finprofiles.com (949) 375-3436
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