MACRO Valve, L.L.C.


Advancing Automotive Technology

Providing A New Generation of Technology





How it works

Clean Air

Rotary Cartridge Valve - RCV Technology

By 1996, 97% of pollutants had been removed from auto emission using current technology. Attempts to remove the remainder will be cost prohibitive adding an estimated $2,000 to the cost of a new car. However, the Rotary Cartridge Valve has added value above and beyond the performance gains already cited. In the area of pollution, RCV technology is capable of reducing pollutants in addition to those already met by existing technologies.

An Addition to Clean Air

Improved combustion, as is the case with the Rotary Cartridge Valve, will reduce pollutants another 10% simply through effective burn cycles. The cost for this change over is not only minute compared to what is being suggested, it actually improves the performance of the engine and provides other benefits as well.

The benefit from using RCV technology to limit pollution is not only acceptable, it could significantly impact the progress of reducing pollution through the RCV introduction into the new car market in addition to the replacement of exiting poppet valves.

Please review the following articles in understanding the financial, social and health costs in pollution.  A 10% reduction in emissions through improved combustion using the RCV technology would translate into millions, if not billions, when considering the financial, social and health costs detailed below.

California Environmental Protection Agency - Air Resources Board

Daven Oswalt, Jerry Martin/Allan Hirsch (916) 322-2990

ARB Auto Pollution Reduction Program Proves Cost-Effective

"By 2003 new vehicles sold in California will emit only 25 percent of the most harmful pollutants which come from 1994 vehicles," said ARB Chairman John Dunlap.

Dunlap noted that the pollution benefit gains are particularly impressive considering that emissions from cars and light trucks have already been reduced by more than 90 percent from 1966 through 1994.

For the full article

Cars and Air Pollution  - National Center for Policy Analysis

Presented paper by Joseph Bast President of The Heartland Institute.

Automobiles and other forms of transportation are responsible for approximately one-third of man-made nitrogen oxide and volatile organic compound emissions, one-fifth of particulate emissions, two-thirds of carbon monoxide emissions, and less than 5 percent of sulfur dioxide emissions.

These numbers are large enough to warrant serious attention by environmentalists, and no one disagrees that cleaning up auto emissions would help improve urban air quality. Less widely acknowledged, however, is the considerable progress that already has been made in reducing the rate at which individual cars produce pollution. Indeed, this record is one of the most dramatic and unsung environmental success stories of the 1980s and 1990s. Consider the following accomplishments:

  • Today's new cars emit 97 percent less hydrocarbons, 96 percent less carbon monoxide, and 90 percent less nitrogen oxide than those built twenty years ago.
  • Cars purchased in the 1990s will emit about 80 percent less hydrocarbons and 60 percent less nitrogen oxide during their lifetimes, even though they will be owned longer and driven farther.
  • Between 1970 and 1991, total highway vehicle emissions of hydrocarbons dropped 66 percent, carbon monoxide emissions by 59 percent, and nitrogen oxide emissions by 21 percent despite the doubling of vehicle miles traveled.
  • Emission standards for the U.S. auto fleet are more strict than those of other countries. For example, for the model years 1981-1988, the average emissions for cars sold by General Motors in the U.S. equaled emissions of the lowest-emitting Japanese cars sold in the U.S.
  • In the European Community, catalytic converters were required in most new cars beginning in 1993; the U.S. has required them in new cars since 1975.

    Current trends in technology and public policy ensure that air pollution from cars will continue to decline through the 1990s and beyond:

  • Since it takes about 15 years for a passenger car fleet to turn over, fewer than one-third of all the motor vehicles on the road today were built to meet stricter air pollution standards.
  • Between 1987 and 2000, the natural rate of turnover in the domestic auto and truck fleet will produce further reductions of 50 percent in hydrocarbon emissions, 52 percent in carbon monoxide emissions, and 34 percent in nitrogen oxide emissions, without any changes in current emission standards for cars and trucks.
  • Beginning in 1995, in accordance with the 1990 Clean Air Act Amendments, oil companies began selling reformulated gasoline in the nine cities with the worst ozone problems. The new gasoline will cut vehicle emissions of hydrocarbons and air toxins by at least 15 percent, and all lead and other heavy metals will be removed.

    As reviewed in the National Center for Policy Analysis article:


RCV - A Pollution Example

1996 Estimated Daily Pollution Statewide for the State of California.

The chart below shows the levels, sources of pollution by categories and the types of pollutants as measured in tons per day. The two categories of On Road and Other Mobile Sources combined show the effect of the internal combustion engine. These two combined account for 56% of all the pollution statewide in California alone.

The internal combustion engine creates 21,340 tons of pollution in California. The ten percent reduction possible with the Rotary Combustion Value would eliminate 2,134 tons per day in California alone.




A Report from the International Center for Technology Assessment

This report by the International Center for Technology Assessment (CTA) identifies and quantifies the many external costs of using motor vehicles and the internal combustion engine that are not reflected in the retail price Americans pay for gasoline. They cite,

  • $39 billion to $600 billion spent annually dealing with air pollution due to the internal combustion engine world wide.
  • $29.3 to $542.4 billion for annual uncompensated health costs .
  • $3 to $27.5 billion in the area of Global warming.


For a copy of the full report, contact: CTA at 202-547-9359, or


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