Technology. The ECO System uses E85, a renewable fuel already in distribution.

The system injects E85 directly into the intake manifold airflow of any diesel engine.

The process is called Reactive Charge Compression Ignition (RCCI). RCCI has recently been studied by the Department of Energy’s Oak Ridge National Lab and by the University of Wisconsin. The published results of those studies show similar fuel efficiency gains and emission reductions to ECO Fueling’s lab results.

Independent tests by Ricardo US and Horiba Instruments (Global Emissions Test equipment providers) have demonstrated up to a 10% increase in fuel economy with higher torque and horsepower. Tests also show reductions of particulate matter (PM) of up to 30% and nitrous oxides (NOx) by approximately 20%. The fuel economy tests have been verified on three Class 8 trucks with upwards of 700,000 cumulative road-driven miles with actual fuel economy improvements of between 5%-10% being recorded.

A key feature of our solution is that it is not only compatible with current emission control solutions, such as Urea-based Selective Catalyst Reduction (SCR) and Diesel Particulate Filters, (DPF) but it also reduces the operational demands on both. By utilizing E85, we are positioned to integrate our system with the latest development in SCR, which utilizes E85, rather than hazardous ammonia based fluids.

An overview of the ECO System

E85 (or ethanol) is contained in a fuel tank separate from the diesel fuel and is atomized and mixed with the air-stream just prior to injection into the combustion chamber. The technology provides benefits in the following manners:
E85 is injected into the combustion chamber at a lean air to fuel ratio, providing enhanced combustion of the diesel fuel through RCCI, and as such there is a more efficient and complete burn.2. Improved thermal cycle efficiency provides a lower temperature within the cylinder. The lower the temperature, the less wear on the engine and its components, along with lower net emissions.

Unlike diesel, which is a pure hydrocarbon, E85 contains a hydroxyl group (oxygen-hydrogen) that provides bound oxygen directly into the fuel mixture. The higher hydroxyl concentration within the fuel provided by the ethanol, the greater the reduction in particulate matter.

The system is also designed to avoid limiting the operation of a truck in the event of a system failure. If any problem occurs with the system, including a depleted E85 fuel tank, the system will shut itself down. In this failure mode, the truck can still be operated like a regular diesel vehicle.