Emission, adsorption and desorption system for cold start of automobile and control method

An adsorption-desorption and cold-starting technology, which is applied to exhaust devices, engine components, machines/engines, etc., can solve problems such as poor temperature resistance of adsorption materials, impact on vehicle economy of adsorption-desorption systems, and complex desorption control strategies. , to achieve the effect of reducing emissions

Active Publication Date: 2016-09-21
BEIJING UNIV OF TECH
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Problems solved by technology

But so far, there are very few products that really apply adsorption technology to the control of automobile cold start emissions, mainly due to the poor temperature resista

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  • Emission, adsorption and desorption system for cold start of automobile and control method

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing and specific embodiment the present invention will be further described:

[0015] The system includes an intake pipe 1, an air filter device 2, and an engine 3. The air filter device 2 is connected to the engine 3 through the engine intake pipe 1; the primary three-way catalytic converter 4 is connected in series with the secondary three-way catalytic converter 18 and passed through the exhaust The pipe 5 is connected with the engine 3; the adsorption pipe 9 is connected in parallel with the exhaust pipe 5, wherein the exhaust pipe 5 is provided with a first valve 7, and the adsorption pipe 9 is provided with a second valve 10 and a one-way valve 15. An adsorption device 13 is arranged between the second valve 10 and the one-way valve 15, and an adsorption device external pipeline 14 is arranged outside the adsorption device 13, wherein, the outer surface of the adsorption device 13 is a material with good thermal conductivi...

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Abstract

The invention discloses an emission, adsorption and desorption system for cold start of an automobile and a control method, belonging to the field of internal combustion engines. After an engine (3) is started, exhausted gases at a cold start stage of an automobile engine pass through an adsorption device (13) and then are exhausted by an exhaust pipe (5) by controlling opening-closing states of various valves; after the cold start stage is ended, the adsorption device (13) is enabled to be positioned in a bypass state; after a first-stage three-way catalytic converter (4) and a second-stage three-way catalytic converter (18) separately reach working temperatures, high-temperature tail gases of the automobile engine are enabled to heat the outer surface of the adsorption device (13) through an external pipeline (14) of the adsorption device, and pollutants adsorbed in the device are enabled to be gradually desorbed; and the pollutants adsorbed in the adsorption device (13) are brought back to the engine (3) for burning by using negative pressure generated by vacuum degree of an engine intake manifold (1) and air entering from a desorption air inlet pipeline (17), thereby achieving the aims of saving energy and reducing emission.

Description

technical field [0001] The invention provides an adsorption and desorption system and a control method for automobile cold start emission, which belong to the field of internal combustion engines. Background technique [0002] With the rapid increase in the number of automobiles, automobile emissions have aggravated air pollution and environmental degradation. Automobile emissions have become one of the main sources of urban air pollution. Reducing pollutant gas emissions during engine cold start has become one of the important issues to be solved urgently for the continued development of internal combustion engines. one. The latest national standards, the country will implement the fifth phase of national motor vehicle emission standards on January 1, 2018, and Beijing will implement the fifth phase of national motor vehicle emission standards ahead of schedule on January 1, 2016. The National V standard is equivalent to the Euro V standard of the European Union. The Europ...

Claims

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Application Information

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IPC IPC(8): F01N3/08
CPCF01N3/0807F01N3/0814F01N3/0835F01N3/0842F01N3/0857F01N3/0871F01N3/0885
Inventor 纪常伟徐溥言汪硕峰余梦辉王兵林深
Owner BEIJING UNIV OF TECH
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