Diesel engine exhaust purifying device
The present invention relates to a device for purifying exhaust gas of diesel engines for removing particulate matters from the exhaust gas. A device for purifying exhaust gas of a diesel engine equipped with a continuous regeneration type diesel particulate filter arranged in the exhaust gas passag...
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| Format | Patent |
| Language | English |
| Published |
30.11.2004
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| Online Access | Get full text |
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| Summary: | The present invention relates to a device for purifying exhaust gas of diesel engines for removing particulate matters from the exhaust gas.
A device for purifying exhaust gas of a diesel engine equipped with a continuous regeneration type diesel particulate filter arranged in the exhaust gas passage of the engine. The device includes an intake air shutter arranged in the intake air passage of the engine, an exhaust gas temperature region detector for detecting an exhaust gas temperature region of the engine, a controller for controlling the opening degree of the intake air shutter when the exhaust gas temperature region of the engine, detected by the exhaust gas temperature region detector, is lower than a predetermined temperature region, and an exhaust valve-operating mechanism equipped with an exhaust gas introduction mechanism for opening the exhaust valve of the engine for a short period of time during the intake stroke of a cylinder of the diesel engine, to introduce exhaust gas into the cylinder. |
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