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Automobile cold start exhaust absorption device

An adsorption device and cold start technology, which is applied in exhaust devices, mufflers, engine components, etc., can solve the problems of increased engine fuel consumption, limited fluorspar adsorption capacity, and inability to adsorb, and achieve the effect of reducing cold start emissions

Inactive Publication Date: 2008-04-23
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fluorspar adsorber is connected in series on the exhaust pipe to form a long-lasting back pressure and increase the fuel consumption of the engine, and the fluorspar adsorption capacity is limited, so it cannot absorb most of the HC from the cold start of the engine

Method used

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  • Automobile cold start exhaust absorption device
  • Automobile cold start exhaust absorption device

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Embodiment Construction

[0017] Attached below figure 1 , figure 2 Examples of the present invention will be described.

[0018] This embodiment mainly includes electronic control unit 1, engine 3, exhaust pipe 2, intake pipe 4, wherein, intake pipe 4, exhaust pipe 2 are connected with engine, and air intake pipe 4 is arranged in sequence along the air intake direction. The filter 6 and the throttle valve 5 are provided with a fourth valve 12 and a three-way catalytic converter 13 in sequence along the exhaust direction on the exhaust pipe 2, and the control unit 12 is connected with the fourth valve 12 and controls the opening of the fourth valve 12, and controls Unit 12 also receives engine speed signal 15 , engine coolant temperature signal 16 . Also include bypass pipe 17, first valve 9, second valve 10, third valve 11, activated carbon adsorber 8, bypass pipe 17 is connected in parallel on the exhaust pipe 2 of engine 3, bypass pipe 17 and exhaust The connecting points of the pipe 2 are respe...

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Abstract

The invention relates to a vehicle cool-start discharge absorber, wherein said device is parallel connected to the ventilate tube (2) of internal-combustion engine; the active carbon block is covered by sheet steel plate to form active carbon absorber (8); the electric controller (1) via obtained cooling water temperature signal (16) and the rotation speed signal (15), and relative control strategy, via opening or closing several electromagnetic valves, fixes the working condition of active carbon absorber (8), to absorb the discharged material in the cool-start process; when the engine is started, it uses vacuum of throttle valve (5) to release the stored discharge material of active carbon, into the inlet tube (4), to be burnt out in cylinder; when the engine is warm, said device will be bypass. With said invention, the HC discharge can be reduced 79%, CO can be reduced 40% and NOx can be reduced 50%.

Description

technical field [0001] The invention relates to an automobile cold start emission adsorption device, which belongs to the technical field of energy and environmental protection. Background technique [0002] With the rapid increase of the number of automobiles, automobile exhaust emissions have become the largest source of air pollution in big cities. In order to slow down the trend of air quality deterioration, vehicle exhaust emissions must be strictly controlled. As far as motor vehicle exhaust emission control standards are concerned, there are mainly American standards, Japanese standards and European standards in the world. China's road and use conditions are similar to those in Europe, so European standards are adopted. For the Euro 2 standard, the emission limit is lower and the emission in the first 40 seconds after starting is not counted. After 100 seconds, the oxygen sensor and the three-way catalytic converter are basically in normal working condition, and the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D9/08F01N3/031F01N3/00B01D53/04
Inventor 纪常伟何洪
Owner BEIJING UNIV OF TECH