Exhaust treatment system
A technology for exhaust gas treatment and exhaust pipe, applied in the direction of exhaust gas treatment, electronic control of exhaust gas treatment device, exhaust device, etc., can solve the problems of increasing harmful substance concentration, increasing fuel consumption rate, increasing mass fraction, etc. Achieve the effect of reducing emission increase, advancing working time, and shortening light-off time
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[0027] Example one:
[0028] Such as figure 1 As shown, an exhaust treatment system includes: a compressor 2, an injector 8, an exhaust pipe 7 and a controller 11. The compressor 2 and the injector 8 are connected by pipelines, the exhaust pipe 7 is installed on the injector 8, and the controller 11 is electrically connected with the compressor 2 through the first control line 12. The compressor 2 is an electrically driven compressor, and the controller 11 can select PLC, single-chip microcomputer or other logic controllers or control circuits.
[0029] When in use, the exhaust pipe 7 is respectively connected to the engine 6 and the catalytic converter 9 through pipelines. The compressor 2 compresses and pushes the air in the environment to the injector 8, and the injector 8 injects the pressurized air into the exhaust pipe 7. This air is mixed with the exhaust gas from the engine 6 in the exhaust pipe 7 and then flows to the catalytic converter 9 for oxidation reduction treatme...
Example Embodiment
[0033] Example two
[0034] An exhaust gas treatment system is improved on the basis of Embodiment 1. The compressor 2 and the injector 8 are no longer directly connected, but a first valve 3 is installed between the compressor 2 and the injector 8. The first valve 3 is connected to the compressor 2 and the ejector 8 through a pipeline, and the first valve 3 is also electrically connected to the controller 11 through a control line. The other structure is the same as the first embodiment. The advantage of this design is that the controller 11 can directly adjust the opening of the first valve 3 to adjust the air flow. The first valve 3 adds a controllable point to the entire system, thereby improving the controllability and stability of the exhaust gas treatment system.
Example Embodiment
[0035] Example three
[0036] Such as figure 1 As shown, an exhaust treatment system is improved on the basis of the first embodiment. The compressor 2 and the ejector 8 are no longer directly connected, but a stabilizer is installed between the compressor 2 and the ejector 8. The chamber 4 and the surge chamber 4 are respectively connected to the compressor 2 and the ejector 8 through pipelines, and the other structures are the same as those in the first embodiment. The function of the surge chamber 4 is to gather airflow and stabilize the system pressure. Preferably, a first pressure sensor 21 is provided in the surge chamber 4, and the first pressure sensor 21 is electrically connected to the controller 11 through the second detection line 18. The pressure value in the surge chamber 4 is acquired by the first pressure sensor 21 and fed back to the controller 11. The controller 11 compares the pressure value of the surge chamber 4 with the standard value, outputs a control si...
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