Control method for an exhaust gas purification system and an exhaust gas purification system
一种废气净化系统、控制方法的技术，应用在电气控制、化学仪器和方法、分离方法等方向，能够解决误认为发动机、发动机变低等问题，达到避免过热的效果
Inactive Publication Date: 2005-10-12
ISUZU MOTORS LTD
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Problems solved by technology
[0011] During manual regeneration, since the driver presses the manual regeneration switch to regenerate, if the information that the cooling water temperature rises is issued in advance, even if the water temperature of the water temperature gauge rises, the possibility of engine failure will be reduced, but when the vehicle is running In the case of driving automatic regeneration in which forced regeneration is automatically performed, since the driver does not know whether it is in the process of forced regeneration control, when the water temperature of the water temperature gauge rises, it is likely to be mistaken for engine failure.
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[0028] Taking an exhaust gas purification system including a continuous regeneration type DPF device composed of an oxidation catalyst and a filter with catalyst as an example, the control method and the exhaust gas purification system according to the embodiment of the present invention will be described with reference to the drawings.
[0029] figure 1 The configuration of the exhaust gas purification system 1 for an internal combustion engine according to the present embodiment is shown. The structure of this exhaust gas purification system 1 is that a continuous regeneration type DPF device 13 is provided on an exhaust passage 12 connected to an exhaust manifold 11 of a diesel engine 10 . The continuous regenerative DPF device 13 is configured to have an oxidation catalyst 13a on the upstream side and a catalyst-attached filter 13b on the downstream side.
[0030] The oxidation catalyst 13a is formed by loading an oxidation catalyst such as platinum (Pt) on a support such a...
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The invention provides an exhaust emission control system and a method for controlling the same capable of avoiding driver's misunderstanding of occurrence of engine trouble with seeing abnormal rise of a water temperature meter by preventing the water temperature meter at a driver's seat from abnormally rising during forced regeneration of DPF in an exhaust emission control system provided with a DPF device. Operation of an exhaust temperature rising means 351C is canceled if engine cooling water temperature Tw detected by a cooling water temperature detecting device 37C exceeds predetermined water temperature Tw1, Tw2 for judgment during forced regeneration control of a filter using the exhaust temperature rising means 351C.
Description
technical field [0001] The present invention relates to a control method and an exhaust gas purification system for purifying particulate matter (PM) in the exhaust gas of internal combustion engines such as diesel engines by using a continuous regeneration type diesel particulate filter (DPF) device. Background technique [0002] The emission of particulate matter (PM: Particulate Matter, hereinafter referred to as "PM") from diesel internal combustion engines, together with NOx, CO, and HC, has stricter restrictions year by year. A particulate filter (DPF: Diesel Particulate Filter, hereinafter referred to as DPF) is a technology that traps this PM to reduce the amount of PM discharged to the outside. There are DPF devices and continuous regeneration DPF devices loaded with catalysts. [0003] However, in these continuous regeneration DPF devices, when the exhaust gas temperature is above about 350°C, the PM captured by the DPF is continuously burned and purified, and the ...
Claims
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IPC IPC(8): F02D9/04B01D46/42B01D53/94F01N3/02F01N3/023F01N3/24F02D41/02F02D41/04
CPCF02D41/029F01N3/0231F01N3/0235F02D41/0245F02D41/047F02D41/1446F02D2041/228F02D2200/0812F02D2250/11Y02T10/26Y02T10/12
Inventor 饭塚彰内田直实佐藤等益子达夫土田穰
Owner ISUZU MOTORS LTD