发明名称 EXHAUST GAS AFTER-TREATMENT DEVICE FOR DIESEL ENGINE
摘要 <p><P>PROBLEM TO BE SOLVED: To reduce quantity of electricity to be used and reduce temperature of exhaust gas when particulate matter (PM) accumulated in a diesel particulate filter (DPF) is burned by an electric heater and the DPF is regenerated in a diesel engine equipped with the DPF. <P>SOLUTION: This exhaust gas after-treatment device is provided with a heated air supply device supplying heated air to an upstream side of the DPF 7 during regeneration in an exhaust system of the diesel engine. The heated air supply device includes a blower 71 pressurizing and feeding air sucked from an intake pipe of the diesel engine, an exhaust heat recovery heat exchanger 72, and the electric heater 73, and recovers exhaust heat at a downstream side of the DPF 7 and pre-heats air before reaching the electric heater 73 when the DPF 7 is recovered. Electricity consumption of the electric heater is reduced and temperature of exhaust gas is dropped thereby. The engine control device 11 includes a means for operating accumulated PM quantity, and electricity supply time of the electric heater 73 is determined based on the operation value. <P>COPYRIGHT: (C)2010,JPO&INPIT</p>
申请公布号 JP2010138717(A) 申请公布日期 2010.06.24
申请号 JP20080313411 申请日期 2008.12.09
申请人 ISUZU MOTORS LTD 发明人 ISHIKAWA NAOYA
分类号 F01N3/02;B01D46/42;F01N5/02 主分类号 F01N3/02
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