Auxiliary air flow control device

A flow control device, secondary air technology, applied in exhaust devices, mufflers, engine components, etc., can solve problems such as affecting the natural environment, damage, and catalysts that cannot be effectively restored, so as to protect the ozone layer, protect the environment, and reduce acid rain. the harmful effect of

Inactive Publication Date: 2009-05-13
上海钊辉科技有限公司 +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned negative pressure control valve still cannot accurately control the flow rate of the secondary air into the exhaust gas discharge end, resulting in the inability of the catalyst to effectively reduce NO X phenomenon, so that it is discharged into the outside atmosphere, causing acid rain and the main factor of destroying the ozone layer, affecting the natural environment

Method used

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  • Auxiliary air flow control device
  • Auxiliary air flow control device
  • Auxiliary air flow control device

Examples

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Embodiment Construction

[0055] In the following, the structural composition and the effect that can be produced of the secondary air flow control device of the present invention are described in detail as follows with preferred embodiments in conjunction with the accompanying drawings:

[0056] First look at Fig. 1 and Fig. 1 a, it is the disposition schematic diagram of the first embodiment of the present invention, and this secondary air flow control device 2 is arranged between an air intake end 10 of an engine 1 and an exhaust gas discharge end 12; In practice, the air intake port 10 is an air filter communicated with the engine intake manifold 11, the exhaust gas discharge port 12 is the exhaust manifold of the engine 1, and a muffler 9 and at least one catalytic converter 91 connected in series; the exhaust negative pressure of the exhaust gas from the exhaust manifold of the engine 1 drives the secondary air to be supplied from the air intake end 10 to the exhaust gas discharge end 12. Coopera...

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Abstract

The invention discloses a secondary air flow control device which is arranged between an intake end and an exhaust end of an engine. The air flow control device comprises a device body. The inside of the device body is provided with an air chamber. An intake pipe which is communicated with the intake end, and an exhaust pipe which is communicated with the exhaust end are arranged on the device body. The intake pipe is communicated with the exhaust end by the air chamber. The inside of the air chamber is provided with a bearing seat and has at least one vent. The inside of device body or the bearing seat is pivoted with a moving part which has at least one choke and a shielding part which control the open area of the vent. The moving part is connected with a throttle lead wire which draws the moving piece to rotate and reset to allow the choke and the shielding part to control the open area of the vent to control secondary air flow precisely. The device allow NOX and CO to be reduced effectively in the presence of a catalyst, thereby protecting the ozone layer, reducing hazards caused by acid rain and effectively protecting the environment.

Description

technical field [0001] The invention relates to a secondary air flow control device, in particular to a secondary air supply channel arranged at the exhaust gas discharge end of an engine to control the flow rate device for introducing the secondary air into the exhaust gas discharge end of the engine. The secondary air refers to the air extracted from the fresh air outside to be introduced into the engine exhaust exhaust end, which is different from the primary air used for mixing the engine gas. Background technique [0002] Catalytic converters for general engines coat (attach) a catalyst on a metal cylinder, and use noble metals containing Pd and Pt in the catalyst to oxidize harmful CO and HC in the exhaust gas into harmless CO 2 and H 2 O, or use the noble metal containing Rh in the catalyst to reduce the harmful NO in the exhaust gas X Revert to harmless N 2 and O 2 , to purify the engine exhaust gas, thereby reducing the impact of exhaust gas on the quality of th...

Claims

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Application Information

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IPC IPC(8): F01N3/30
Inventor 吴家武许丕圣吴孝忠
Owner 上海钊辉科技有限公司
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