Rotapower® Engine Emissions

Cleaner Burning Engine for Carbon Fuels

Rotapower® Engine Emissions

Air pollution is a worldwide problem and the development of an ultra-clean burning fuel and engine combination has been the goal of many scientists and engineers for many decades. Freedom Motors has what it believes to be a great solution using an engine first conceived by Dr. Felix Wankel, and ethanol fuel (non-fossil fuel made from organic materials).

Tests carried out in conjunction with the Institute of Transportation Studies (ITS) at the University of California at Davis, and witnessed by members of the California Air Resources Board (CARB), saw the Rotapower® engine using gasoline as a fuel achieve hydrocarbon, carbon monoxide, and nitrous oxide emission levels well below those required to meet the Ultra Low Emission Vehicle (ULEV) standards for California. This was accomplished without exhaust after-treatment (catalytic converter) which had not been previously achieved with any other engine technology.

Recently, similar tests were carried out using ethanol as a fuel. It has proven to be the ideal fuel choice, including it's much more effective cooling of the rotor (high heat of vaporization). Using ethanol resulted in emissions well below the Super Ultra Low Emission Vehicle (SULEV) California standards again without exhaust after-treatment. The results of the earlier tests with gasoline and the recent tests with ethanol are tabulated as follows:

 

ULEV Data(Rotapower engine running on gasoline) SULEV Data(Rotapower engine running on ethanol)
Unburned hydrocarbons (HC)
.6 ppm = .0635 gm/hp-hr = .016 gm/mi
(40% of ULEV std.)
Unburned hydrocarbons (HC)
.5 ppm = .0043 gm/hp-hr = .002 gm/mi
(2% of SULEV std.)
Carbon monoxide (CO)
372 ppm = 1.24 gm/hp-hr = .31 gm/mi
(18% of ULEV std.)
Carbon monoxide (CO)
9 ppm = .03 gm/hp-hr = .013 gm/mi
(1.3% of SULEV std.)
Nitrogen oxide (NOx)
100 ppm = .65 gm/hp-hr = .16 gm/mi
(80% of ULEV std.)
Nitrogen oxide (NOx)
3 ppm = .016 gm/hp-hr = .007 gm/mi
(35% of SULEV std.)
Emission levels are below the California Ultra Low Emissions Vehicle (ULEV) standards when adjusted for an automobile traveling at a steady 70 miles per hour. Emission levels are below the California Super Ultra Low Emissions Vehicle (SULEV) standards when adjusted for an automobile traveling at a steady 70 miles per hour.