A dpf off-line regeneration temperature control system and control method
A technology of regeneration temperature and control system, applied in the direction of electronic control of exhaust treatment device, machine/engine, mechanical equipment, etc., can solve the problems of increasing exhaust pressure, insufficient active gas, etc., to reduce regeneration time, air flow, etc. The effect of uniform resistance and improved regeneration efficiency
Active Publication Date: 2022-01-11
JIANGSU UNIV
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Problems solved by technology
[0005] Patent CN-208734408U provides a method for online regeneration using NTP technology, but because the amount of active gas generated by online regeneration is insufficient, the active gas and exhaust share the main exhaust pipe to increase the exhaust pressure, and the active gas is exhausted Disadvantages such as rapid pyrolysis under high temperature atmosphere
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[0049] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0050] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand...
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The invention discloses a DPF off-line regeneration temperature control system and control method, and relates to the field of post-treatment of diesel engine exhaust, including a post-treatment system, a diversion system, a cooling system, a heating system, an NTP injection system, a voltage controller and a control module; The cooling system is used to cool the aftertreatment system and the NTP injection system; the voltage controller controls the generation of NTP generator gas by adjusting the voltage input to the NTP injection system; Between the processing systems, the gas output by the NTP injection system is heated and transported into the diversion system, which is diverted and rotated by the diversion system, and then enters the post-processing system; the control module is used to control the signals used to receive and process the system. The invention efficiently regenerates the DPF when the engine is stopped, so that the productivity of the active material is maintained at a high level, the decomposition of the active material is reduced, the oxidation rate of the particles in the DPF is increased, and the efficient off-line regeneration of the DPF is realized.
Description
technical field [0001] The invention relates to the field of exhaust aftertreatment of diesel engines. Specifically, it relates to a DPF off-line regeneration temperature control system and control method. Background technique [0002] Due to its good economy, reliability, power and high thermal efficiency, diesel engines are widely used in transportation, engineering and agricultural machinery generator sets and other fields. Different from gasoline engines, diesel engines have high PM and NOx emissions due to their high compression ratio and large average air-fuel ratio, and the harm of PM and NOx to humans cannot be ignored. PM with a smaller particle size will enter the body with people's breathing and cause damage to the heart and respiratory system. The composition of NOx in exhaust gas is mainly NO and NO 2 , NOx has a stimulating effect on the respiratory tract, which will damage the respiratory tract and cause pharyngeal discomfort, dry cough, etc. The chronic ef...
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IPC IPC(8): F01N3/023F01N3/027F01N3/029F01N9/00
CPCF01N3/0231F01N3/027F01N3/0293F01N9/002Y02T10/40
Inventor 蔡忆昔李顺利施蕴曦王为凯赵楠倪思佳
Owner JIANGSU UNIV