| 摘要 |
<p>PURPOSE:To miniaturize an exhaust emission control device while preventing the discharge of the ingredient of exhaust particulates and the like into the atmosphere so as to enable the device to be mounted on a small car and the like. CONSTITUTION:Filters B1, B2 are installed in an exhaust gas passage A in parallel rows and also control valves C1, C2 for controlling exhaust gas flow to respective filters are installed. Heaters H1, H2 are provided in respective filters. In the case of collection in a running area for receiving small amount of exhaust gas, the exhaust gas is introduced into two filters B1, B2 alternately and in the case of collection in a running area for receiving a large amount of exhaust gas, the exhaust gas is introduced into two filters B1, B2 simultaneously. In the case of regeneration in the running area for receiving a small exhaust amount, the filters B1, B2 on the control valve opening side are regenerated by the electricity transmission to the heater H1, H2 just before the time of judging a regeneration timing and in the running area for receiving a large exhaust gas amount, the exhaust gas is introduced to both filters B1, B2 simultaneously so as to regenerate the filters.</p> |
