| 摘要 |
<p>Internal combustion engine with considerably reduced output of hydrocarbons in exhaust gases has its cylinder head cavity coated with synthetic resin, which is thermally stable at normal engine operating temperature, pref. a fluorocarbon, P.T.F.E. hexafluoropropylene or trifluorochloroethylene of thickness between 0.013-0.025 mm.</p> |
