公开(公告)号：EP0579415A1

公开(公告)日：1994-01-19

申请号：EP93305128.6

申请日：1993-06-30

申请人： JOHNSON MATTHEY PUBLIC LIMITED COMPANY

发明人： Bennett, Christopher John ,  Waldram, Simon Patrick

IPC分类号： F01N3/20 ,  F01N3/28

CPC分类号： F01N3/2013 ,  F01N3/2892 ,  F01N3/30 ,  F02B1/04 ,  Y02T10/26

摘要： Apparatus for use in an engine exhaust system contains
   a catalyst (A) for the treatment of the exhaust gas in order to combat air pollution, and
   a non-catalytic heater (B,C) up-stream of the catalyst (A), to reduce the time it takes the catalyst (A) to reach its effective reaction temperature, the heater (B,C) having at least 15 heated channels per square cm, as measured at right angles to the gas flow through them, the heated channels being less than 1.0 cm in length, so that in operation the gas passes through the channels, and is thereby heated before it reaches the catalyst (A), the heater (B,C) being such that the heated gas leaving the channels has at least to some extent turbulent flow.

摘要翻译： 用于发动机排气系统的装置包含用于处理废气以消除空气污染的催化剂（A）和催化剂（A）上游的非催化加热器（B，C），至 减少催化剂（A）达到其有效反应温度所需的时间，加热器（B，C）具有与通过它们的气体流量成直角测量的每平方厘米至少15个加热通道，加热通道为 长度小于1.0cm，使得在操作中，气体通过通道，从而在其到达催化剂（A）之前被加热，加热器（B，C）使得离开通道的加热气体至少具有 在一定程度上紊流。