Caterpillar Inc. Recognized as EPA Clean Air Excellence Award Winner

Cat® 3512E Tier 4 Dynamic Gas Blending (DGB)™ Engine Receives Clean Air Excellence Award from U.S. Environmental Protection Agency (EPA)

Deerfield, Illinois – Caterpillar Inc.  is proud to be a recipient of the U.S. Environmental Protection Agency's (EPA) Clean Air Excellence Award in the category of Clean Air Technology for the  Cat® 3512E Tier 4 DGB™ engine.  This is the 17th year that the EPA has recognized individuals and organizations for their innovative efforts with clean air projects.

In selecting recipients for the award, the EPA considers criteria such as the technology's ability to encourage a reduction in emissions, the innovative and unique quality of the technology, and positive efforts that promote continuous and sustainable outcomes. “Our winners’ inspirational dedication to environmental protection is a model for all of us, and we look forward to many more years of clean air innovation and collaboration,” said Anne Austin, Principal Deputy Assistant Administrator for EPA's Office of Air and Radiation.

The 3512E Tier 4 DGB well service engine enables operations to reduce diesel consumption and greenhouse gas (GHG) emissions while maintaining power, performance, and reliability. With this innovative dual-fuel technology, the engine automatically maximizes the amount of natural gas used to displace diesel and offers the industry's best diesel displacement rate of up to 85%.

"It is a great honor to be recognized by the EPA for our Cat 3512E Dynamic Gas Blending™ engine - the first and only DGB engine on the market certified to meet the U.S. EPA Tier 4 Final emission standards,” said Caterpillar Vice President Tana Utley.  “Many Caterpillar engineers, myself included, have built a career around the journey to reduce diesel emissions from heavy equipment to near-zero levels. Dynamic gas blending is another game-changing step on our journey to help customers meet their total cost of ownership and greenhouse gas reduction goals and build a better world.”    

Named "Engine of the Year" in 2019 by Diesel Progress, the 3512E DGB engine has more than 300,000 operating hours in the field. To meet the needs of the customer, Caterpillar offers both new factory sales of the 3512E DGB as well as retrofit kits to enable the use of DGB technology on existing 3512E diesel engines. To learn more about the engine, visit our website.

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About Caterpillar Oil & Gas

Caterpillar Oil & Gas, with headquarters in Houston, Texas, consolidates all the sales and service activities for Caterpillar Inc.’s oil and gas power solutions. Since the 1930s, Caterpillar has manufactured engines for the oilfield and today provides premier power solutions with outputs from 31 to 16,000 kW.  The sales and service network includes more than 2,100 dealer locations world-wide dedicated to support customers in the drilling, production, well service and gas compression segments. More information is available at:


About Caterpillar

Since 1925, Caterpillar Inc. has been helping our customers build a better world – making sustainable progress possible and driving positive change on every continent. With 2019 sales and revenues of $53.8 billion, Caterpillar is the world’s leading manufacturer of construction and mining equipment, diesel and natural gas engines, industrial gas turbines and diesel-electric locomotives. Services offered throughout the product life cycle, cutting-edge technology and decades of product expertise set Caterpillar apart, providing exceptional value to help our customers succeed. The company principally operates through three primary segments - Construction Industries, Resource Industries and Energy & Transportation - and provides financing and related services through its Financial Products segment. For more information, visit To connect on social media, visit

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