What is Diesel Exhaust Fluid? Diesel Exhaust Fluid (DEF) is a non-hazardous product that consists of 67.5% de-ionized water and 32.5% urea. It is not a fuel additive and cannot be combined with diesel fuel, but rather is contained in a dedicated tank for diesel engines and injected into the exhaust system using a Selective Catalytic Reduction (SCR) system.
Is DEF A Requirement? TheEPA is changing emissions standards for NOx emissions, particulate matter and other pollutants from diesel engines. DEF is used in the emissions systems on new diesel powered equipment to meet these standards.
How Does It Work? When DEF is injected into the exhaust using a SCR system, it combines with a catalyst to break down NOx into nitrogen and water. In addition to reducing emissions, the added benefits of this system are increased fuel efficienty and longer oil change intervals.
Does My Equipment Require DEF? Diesel powered vehicles and heavy equipment manufactured before 2009 do not require DEF or any retrofit. The chart below shows the scheduled implementation of diesel powered equipment requiring DEF.
|2009||Tier 2 Light Duty Trucks|
|2010||Heavy Duty Highway Trucks & Buses|
|2015||Fuel Based Ocean Going Vessels|
|2016||SCR Catalyst Based Ocean Going Vessels|
|2017||Locomotive and Marine|
How Much DEF Will I Use? Consumption is measured by a "dosing rate". Data from manufactures and field reports from actual users show usage at 2% - 3% of diesel fuel consumption.
Is all DEF the Same? No. Contaminated diesel exhaust fluid can quickly ruin your SCR system and void your warranty; shutting your equipment down and costing tens of thousands of dollars in repairs and downtime. That’s why TAC Energy has partnered exclusively with TerraCair to supply DEF that's certified by the American Petroleum Institute to meet the international performance and stringent quality standards that engine manufacturer service warranties specify must be used.
Impure DEF can quickly destroy your selective catalytic converter, shutting your diesel equipment down and costing thousands in repairs. Pictured is the result of contaminated diesel exhaust fluid on a Cummins catalyst.
TerraCair® Ultrapure Diesel Exhaust Fluid from TAC Energy meets the stringent product quality standards established by ISO 22241.
By 2017, most diesel powered equipment will require DEF to operate.
From easy pour bottles, tote systems, to tanker loads and everything in between, TAC Energy can develop, supply and maintain a dispensing solution that's optimized for you.
CLICK HERE for an in depth whitepaper on DEF
CLICK HERE to watch our DEF hub video