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The U.S. Federal Emission Standards ruled that particulate emissions from '87 models should be no more than 0.20 g/mile for passenger cars and 0.26 g/mile for light-duty trucks. A complete ceramic swirl chamber with a heat insulating air gap has been developed to meet the above standards without sacrificing fuel economy or power output. The whole process by which the ceramic swirl chamber was developed will be described: optimization of materials, design, manufacturing, and the method and system of quality control. The results of long term durability tests will be described, which demonstrate the chamber's excellent reliability.