Slide 1


Throughout our history, DCL has continually achieved new milestones. We credit our success to our unwavering commitment to exceeding customer requirements and expectations, industry-leading expertise and the loyalty of our customers worldwide.

Select one of the milestones below for more information. Some milestones link to other sections of the DCL website which contain more detailed information, this is indicated by a Click to learn more ▶ link.


DCL is founded as Diesel Controls Limited, a family owned company, with aims to manufacture and sell high quality "exhaust purifiers" for mobile diesel vehicles used in underground mining worldwide.



  • DCL sells its first exhaust purifier for diesel mining vehicles to Denison Mining.
  • The first fabrication shop is opened in Toronto, Ontario, Canada.
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DCL sells one of the first diesel particulate filters (DPF) for a mining vehicle to Kidd Creek Mining in Timmins, Ontario, Canada.


Fixing Machine

DCL creates its first engine test cell for the development of emission controls.


Operations expand to include a chemical shop and catalyst coating area.

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Brick wall with 3 men

DCL sells its first catalyst for stationary natural gas engines.


Diesel Controls Limited becomes DCL International Inc. The name change reflects the company's growth and entrance into the alternate fuel vehicle (Liquefied petroleum gas - LPG) and stationary engine markets.



DCL partners with Siemens to install the first Selective Catalytic Reduction (SCR) system on an off-road vehicle.


The DCL product line expands to include SCR systems for stationary engines.


Operations expand to include metal catalyst substrate manufacturing

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Operations expand further to include high temperature, vacuum brazing of metal substrates

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Low emission zone


DCL is one of the first companies to introduce metallic partial flow pDPFs for OEM and retrofit in European Low Emission Zones (LEZ).


  • DCL is among the first companies to obtain a California Air Resources Board (CARB) verification for a passive diesel particulate filter for off-road engines
  • Dcl Usa DCL America Inc. is established and the sales team expands into new markets, including Volatile Organic Compounds (VOC), and fuel cells.


  • Road WarriorDCL introduces aftermarket DPFs for model year 2007-2009 diesel trucks, under Roadwarrior brand.
  • Dcl Europe DCL Europe GmbH is established and a headquarters is opened in Frankfurt, Germany, followed by expansion of European based sales and technical support staff.


  • DCL partners with H+H Umwelt und Industrietechnik (Hargesheim, Germany) to form AeriNOx Inc. to supply Selective Catalytic Reduction (SCR) technology to the North American stationary engine market.


  • Roadwarrior aftermarket Diesel Particulate Filters (DPFs) and Diesel Oxidation Catalyst (DOC) for on-road trucks is established as an independent company.
  • DCL expands US operations further, adding heavy-duty manufacturing facility and sales office in Houston, TX.
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