Regeneration system of exhaustion particulate collector
A particle trap and regeneration system technology, which is applied in the direction of exhaust devices, machines/engines, noise reduction devices, etc., can solve the problems of increasing the working frequency of the regeneration system, the regeneration effect is not very good, and the regeneration effect is not very good, and the regeneration time is reached Short, fast, even heating effect
Active Publication Date: 2011-09-21
CHERY AUTOMOBILE CO LTD
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Problems solved by technology
In addition, the size of the current traps is relatively large, which poses a challenge to the layout of the entire vehicle
Due to the difference in the structure of the collector, some adopt the method of reverse blowing, and then collect it twice and burn it in the collector. This structure is simple and the cost is low, but the regeneration effect is not very good. Some use resistance Heating and burning the trapped particles, this heating method is limited by the heating principle, it takes a long time to completely burn the particles or set a lower back pressure value, and it is not very ideal to increase the working frequency of the regeneration system
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[0011] like figure 1 As shown, an exhaust particulate trap regeneration system includes a heater integrated in the particulate trap that works on the principle of electric eddy current, which consists of a metal filter element or a specially treated electric The special ceramic filter element 8 and the coil 7 are composed of eddy current and rapid heating. The particulate filter regeneration system also has a normally closed secondary air pump 3, a pressure sensor 1, a frequency converter 5 and a matching ECU2. The secondary air pump 3, the pressure sensor 1, and the electromagnetic switch 4 are respectively electrically connected to the ECU2. The eddy current heater works through the alternating current generated by the vehicle itself and converted by the frequency converter 5. The frequency converter 5 and the vehicle AC power supply are connected by the electromagnetic switch 4, and the opening and closing of the electromagnetic switch 4 is controlled by the ECU2. The hea...
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The invention discloses a regeneration system of an exhaust particulate catcher, which comprises a heater which is integrated in the exhaust particulate catcher, works according to an electric eddy-current principle, and consists of a metal filter element or a special ceramic filter element which is specially processed and can quickly emit heat by generating electric eddy-current in an alternating magnetic field and a coil, and also comprises a normally-closed secondary air pump, a pressure sensor, a frequency converter and a matched ECU; the secondary air pump, the pressure sensor and an electromagnetic switch are respectively electrically connected with the ECU. As the electric eddy-current heater is adopted and ECU closed loop control is used as an auxiliary, particulate loading when needing regeneration is set by setting the threshold value of pressure, when the pressure exceeds the set threshold value, the ECU supplies power to the secondary air pump directly or to the frequency converter by the electromagnetic switch so as to supply power to the heater indirectly. Under high-temperature environment generated by the heater, the captured particulates generate combustion reaction with oxygen in the supplied air, thus causing the regeneration of the catcher.
Description
technical field [0001] The invention relates to a vehicle exhaust particulate trap regeneration system, in particular to a diesel engine vehicle exhaust particulate trap regeneration system. Background technique [0002] Diesel vehicles are becoming more and more popular among consumers because of their economy and environmental protection. At this stage, dieselization of automobiles has become a trend. Under current emission regulations, particulate emission requirements can be met by arranging an oxidation-type catalytic converter. However, in order to meet stricter emission regulations, a particulate filter must be installed, otherwise the particulate emission is difficult to meet the requirements. It is necessary to regenerate the installed trap, otherwise the whole vehicle cannot work due to poor exhaust. At this stage, many regeneration methods have been proposed, each with its own advantages and disadvantages. In some cases, an oxidation-type catalytic converter is...
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IPC IPC(8): F01N3/023
Inventor 黄成成
Owner CHERY AUTOMOBILE CO LTD