Engine system and filter regeneration method in diesel engine

Engine system and filter regeneration method in diesel engine

  • CN 100,532,799 C
  • Filed: 09/17/2004
  • Issued: 08/26/2009
  • Est. Priority Date: 09/18/2003
  • Status: Active Grant
First Claim
Patent Images

1. engine system comprises:

  • Diesel engine (1);

    Be connected to the exhaust passage (3) of motor (1);

    Be arranged on the diesel engine particulate matter filter (4) on the exhaust passage (3), the diesel engine particulate matter that comprises in its capture in flue gas is so that diesel engine particulate matter is accumulated in wherein;

    Be couple to the temperature control equipment (8) of motor (1), this temperature control equipment is regulated the exhaust gas temperature of motor (1);

    AndBe couple to the controller (11) of temperature control equipment (8), this controller (11) is used for;

    When the regeneration that arrives diesel engine particulate matter filter (4) regularly, begin the Regeneration Treatment of diesel engine particulate matter filter (4) by control temperature control equipment (8) rising exhaust gas temperature;

    Target exhaust gas temperature during the Regeneration Treatment is set, when guaranteeing during even temperature at diesel engine particulate matter filter (4) is owing to Regeneration Treatment that motor (1) enters idling conditions and raises, the temperature of diesel engine particulate matter filter (4) also is no more than the temperature upper limit of diesel engine particulate matter filter (4);

    AndControl temperature control equipment (8), exhaust gas temperature being controlled to the target exhaust gas temperature,Wherein, controller (11) also is used for;

    Diesel engine particulate matter cumulant in the estimation diesel engine particulate matter filter (4);

    The maximum temperature of motor (1) diesel engine particulate matter filter (4) when being transformed into idling conditions during the prediction Regeneration Treatment;

    AndAccording to the diesel engine particulate matter cumulant of estimation target exhaust gas temperature during the Regeneration Treatment is set, so that the maximum temperature of the diesel engine particulate matter filter (4) of prediction is no more than the temperature upper limit of filter (4).

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