Providing A New Generation of Technology


RCV Introduction


How It Works

Clean Air




Rotary Cartridge Valve

The Rotary Cartridge Valve (RCV) provides a series of overall benefits when compared to the conventional poppet valve currently used in internal combustion engine. Improvements include engine performance and mileage, while at the same time reducing emissions, overall weight and maintenance costs.

Patent No. - 5839399 

RCV's Major Strength - Performance

The increase in performance comes from simple elegance and a rule of physics. A body in motion is more efficient maintaining that motion (rotary) than one that changes its direction (up and down as in the poppet valve). Additionally, the flow of air through the rotary valve is significantly improved (both in volume and flow characteristics) and as a result increases the performance of the engine. For a complete list of all the benefits, see benefits.

Another significant benefit of the RCV technology is that it provides variable torque capability across the entire RPM curve. Conventional poppet valve engines (found in today's cars) have a maximum torque that is achieved only at a specific RPM. With MACRO Industries' new RCV technology, the torque performance can be varied throughout the RPM range of the engine. The timing of the intake and exhaust openings of the valves is dynamically adjusted based on demand. The benefit of variable timing is dynamic performance depending upon the demand characteristics of the task. In the case of the automobile, highway and city driving have different demand requirements and variable valve timing allows the engine to get the best performance and fuel economy in each case. Traditional engines usually have a single point or specific RPM that achieves the best performance and economy.


New Generation Technology

The RCV represents one of the new generation of advances in technology that are radically changing the performance, cost, and impact of transportation. RCV has the potential of providing continuous adjustments to the valves, maximizing torque across the range of RPM generated from the engine. Beyond the immediate increase of power, RCV will take advance of another new generation of technology, the CVT or Continuous Variable Transmission. This transmission is also designed to provide maximum torque by continuously altering gearing from the engine to drive wheels through variable pulleys and belt. This eliminates individual gears and reduces the transmission to three moving parts. Together these technologies would significantly improve performance while reducing costs in the future.

Major Strengths

  • Improved Combustion - provides more power, cleaner burns, less waste of fuel and resulting pollutants.
  • Improved Air Flow - increased air flow, superior volume and vortex characteristics virtually eliminating strangulation of airway into the cylinders.
  • Simplified Valve Operation - reduction in parts and accompanying reduction in weight.
  • Less Maintenance - simpler design and fewer parts equates with less to maintain and reduction in oil to moving parts
  • Variable Torque - unlike traditional valves timed to a single open/close cycle, RCV can be continuously adjusted to variable positions allowing added control of power. 
  • Lower Costs -  production and rapid retrofitting for existing on the road vehicles.


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