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1. 发明专利

JPH0763047A EXHAUST EMISSION CONTROL DEVICE 失效
公开(公告)号：JPH0763047A
公开(公告)日：1995-03-07
申请号：JP22957693
申请日：1993-08-24
申请人： MITSUBISHI MOTORS CORP , MIKUNI ADETSUKU KK , MIKUNI KOGYO KK
发明人： HASHIMOTO TORU , KURATANI SHINICHI , NAGASHIMA RON , OKADA KENJI , TAKAZAWA KOJI , TAKAMI KATSUSHI , KITO ICHIKAZU
IPC分类号： F01N3/20 , F01N3/36
摘要： PURPOSE:To accelerate the activation of a catalyst as well as to aim at the simplification of a device in terms of structure and the promotion of low-unit cost of production by igniting a burner simultaneously with engine starting, thereby heating the catalyst, and when a catalytic temperature has become more than the specified value, stopping a combustion of the burner. CONSTITUTION:An exhaust emission control device is provided with a catalytic chamber 12 set up in an exhaust pipe 10 and a burner 14 being installed in close proximity to the upstream of this catalytic chamber 12 and ignited simultaneously with the start of an engine 38. In addition, it is also provided with a branch pipe 18 being branched off from a fuel feed pipe 16 and feeding the burner 14 with fuel, an air blower 20 for feeding the burner 14 with air from the time of igniting the burner 14, a temperature detector 22 detecting a catalyst temperature, and a car-mounted electronic control unit 24, respectively. In this constitution, the burner 14 is ignited simultaneously with engine starting, heating the catalyst as specified, and when the catalytic temperature has become more than the specified value, the burner combustion is stopped. Thus, activation in the catalyst is accelerated, whereby simplification in this device and low-unit cost production are all well promotable.

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