초록

A reed valve assembly in which a gummous material coating is applied to the noise-propagating passageway of a secondary-air exhaust gas recombustion system for internal combustion engines.

대표청구항 ▼

In a secondary-air exhaust gas recombustion system for internal combustion engines having noise-propagating passageways, a reed valve assembly comprising, a reed valve case having a secondary-air supply port and a secondary-air outflow passage, a valve seat surrounding said secondary-air supply port

In a secondary-air exhaust gas recombustion system for internal combustion engines having noise-propagating passageways, a reed valve assembly comprising, a reed valve case having a secondary-air supply port and a secondary-air outflow passage, a valve seat surrounding said secondary-air supply port, a reed secured in said reed valve case covering said valve seat, a secondary-air supply means from said secondary air outflow passage to an exhaust gas recombustion means, and a coating of gummous material applied to the interior surface of the noise-propagating passageways including said reed valve case, said coating of gummous material being applied by the steps comprising, spreading an adhesive on the interior surface, applying a large number of short fibers to the adhesive-spread surfaces, and spraying the gummous coating material onto the fiber layer.