Austin Tree Service works hard to be as environmentally friendly as possible. We care about the environment. One of the ways we show that is by using diesel exhaust fluid on our chipper trucks. Diesel exhaust fluid (DEF) is a non-hazardous solution made up of 32.5% urea and 67.5% de-ionized water.
What is Diesel Exhaust Fluid?
DEF is clear, nontoxic, nonflammable and non-explosive. It’s also sprayed into the exhaust stream of diesel vehicles to break down dangerous emissions into harmless nitrogen and water. The system that does this is called Selective Catalytic Reduction (SCR) and can be found on 2010 and later model trucks. DEF is not a fuel additive and never comes into contact with the diesel itself. It is stored in a separate tank.
How does Diesel Exhaust Fluid Get into the Truck’s System?
Diesel Exhaust Fluid, as we mentioned before, is stored in another tank, separate from the diesel fuel, on board the vehicle. It’s injected into the exhaust stream by a metering system. The injection rate depends largely on the specific after-treatment system you have. It’s typically 2-6% of diesel consumption volume. The low dosing rate ensures long fluid refill intervals and minimizes the tank’s size. An electronic oil control unit will then adjust the addition of fluid in accordance with parameters as engine operating temperature and speed.
How should you store Diesel Exhaust Fluid?
It’s recommended that DEF be stored in cool, dry and well-ventilated area that is out of direct sunlight. As of 2013, a number of truck stops have added DEF pumps in which diesel exhaust fluid is administered at pumps similarly to diesel and often located adjacent to fuel pumps such that the vehicle operator can fill up on both without moving the truck.
3 Ways Diesel Exhaust Fluid is Good for the Environment
- DEF helps eliminate NOx, an element in exhaust that has been blamed for acid rain, smog and raising the overall greenhouse gases on the planet.
- DEF won’t evaporate into ammonia unless you get 120 degree days for two years straight. It’s safe.
- Urea, the active ingredient in DEF, is used in fertilizers, plastics and animal feed. It’s less toxic than other fluids in a truck including the seemingly innocuous windshield washing fluid.
Austin Tree Service takes the environment seriously. We care about it and you. Give us a call today and know that we are a green company. You can feel good about using us for all your tree care needs.