| 摘要 |
1,213,206. Treating and silencing I. C. engine exhaust gases. AUTOMOBILES M. BERLIET March 20, 1968 [March 22, 1967; March 23, 1967] No. 13458/68. Heading F1B. [Also in Division B1] A filter for the exhaust gases of an I. C. engine is incorporated in the silencer housing 1 and comprises an annular mass 9 of alumina-silica wool enclosed between stainless steel mesh cylinders 7, 8 the whole being sufficiently close to the exhaust manifold of the engine to cause soot particles retained by the wool to be burnt, at least when the engine is running on full load. A by-pass valve 15 - 20 opens if the pressure drop across the filter mass 9 rises sufficiently. The housing has an external sheath 13, of asbestos fabric, to retain heat, and a protective outer metal cover (not shown). The wool fibres are about 3Á in diameter and one inch long. |
