Combustion chamber structure in engines
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United States of America Patent
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Oct 26, 1999
Grant Date -
N/A
app pub date -
Dec 15, 1997
filing date -
Jan 21, 1997
priority date (Note) -
Expired
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Abstract
To minimize an increase in friction during the compression stroke, a part of the force to compress the air in the main combustion chamber is stored as a spring force to prevent an excess rise of compressed air pressure in the main combustion chamber and to keep low the pressure difference between the main combustion chamber and the pre-combustion chamber. The spring force stored in the spring is recovered as a work during the power stroke to reduce the energy that is used in the form of friction and heat, thereby improving the utilization of air in the main combustion chamber, increasing the combustion speed in the main combustion chamber, shortening the combustion period. By applying the spring force stored in the spring to the piston as a work, the fuel cost is reduced.
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