Exhaust gas processing device, exhaust gas processing system, method for controlling exhaust gas processing system, control program, and cylindrical tube
a technology of exhaust gas and processing device, which is applied in the direction of engine components, mechanical equipment, machines/engines, etc., can solve the problems of difficult to convert exhaust gas to uniform plasma, and inability to maintain the system. stable and high purification performan
Inactive Publication Date: 2015-04-02
KOKUSA ELECTRIC CO LTD
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Benefits of technology
The invention is a device and system for processing exhaust gas. It can purify exhaust gas to a high level of performance consistently. The method for controlling the system is also provided, along with a control program and a cylindrical tube. This helps to control the flow of exhaust gas and enhance purification performance. Overall, the invention helps to improve the efficiency and effectiveness of exhaust gas processing.
Problems solved by technology
Thus, the conventional exhaust gas processing systems require periodic maintenance.
Therefore, even if an exhaust gas flows between the plasma-generating electrodes, it is difficult to convert the exhaust gas to uniform plasma.
This makes it difficult to obtain high purification performance.
As mentioned above, it is difficult in the urea SCR system and the DPF system to keep purification performance high without maintenance.
Moreover, it is difficult in the barrier discharge plasma method to obtain stable and high purification performance.
These methods are hard to generate stable plasma in an atmosphere other than a vacuum atmosphere and are not suitable for processing an engine exhaust gas.
Method used
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Embodiment Construction
[0021]An exhaust gas processing system 100 according to an embodiment of the present invention will be described with reference to FIG. 1. FIG. 1 is an explanatory view schematically illustrating the exhaust gas processing system.
[0022]The exhaust gas processing system 100 according to the embodiment of the present invention is connected to an engine 101 mounted to a motor vehicle. In the present embodiment, it is assumed that the engine 101 is a diesel engine. The engine 101 emits an exhaust gas containing a NOx and PM during its operation.
[0023]An exhaust gas processing device 103 for purifying an exhaust gas is connected to the downstream side of the engine 101 through a first pipe 102. An exhaust port 106 is provided at the downstream side of the exhaust gas processing device 103, i.e., at the downstream side of the first pipe 102, through a second pipe 104 and a DPF 105. In other words, the exhaust gas processing device 103 is provided between the first pipe 102 and the second ...
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An exhaust gas processing system includes a cylindrical tube through which an exhaust gas of an engine passes, a sensor configured to detect information regarding the exhaust gas discharged from the engine, a coil antenna provided on an outer periphery of the cylindrical tube and connected to a high-frequency power supply, and a control unit configured to control output power of the high-frequency power supply. The control unit controls output power of the high-frequency power supply based on the information detected by the sensor.
Description
TECHNICAL FIELD[0001]The present invention relates to an exhaust gas processing device for purifying an exhaust gas discharged from an engine, an exhaust gas processing system, a method for controlling the exhaust gas processing system, a control program, and a cylindrical tube.BACKGROUND ART[0002]In a diesel engine, it is known that, due to a structural problem, a nitrogen oxide (NOx) and particulate matter (PM) are contained in an exhaust gas.[0003]As a method for reducing emission of a NOx, there is known an urea SCR (Selective Catalytic Reduction) system. In the urea SCR system, urea water (ammonia, NH3) is sprayed on the NOx. By the reaction of the urea water, the NOx is reduced into nitrogen (N2) and water (H2O), thereby reducing the emission amount of the NOx.[0004]As a method for reducing PM, there is known a diesel particulate filter (DPF) system. The DPF system is composed of a porous filter having a catalyst. The DPF system reduces the emission amount of PM by collecting ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F01N3/26F01N3/08F01N11/00F01N9/00
CPCF01N3/26F01N11/00F01N3/0892F01N9/00F01N3/021F01N3/0205F01N2560/026F01N2560/05F01N2560/06F01N2900/08Y02T10/12Y02T10/40
Inventor OGAWA, UNRYUTAKENAGA, KOTAROTAKAHASHI, KATSUMI
Owner KOKUSA ELECTRIC CO LTD