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Integrated EGR (exhaust gas recirculation) mixer

A mixer and EGR valve technology, applied in machines/engines, adding non-fuel substances to fuel, internal combustion piston engines, etc., can solve problems such as large vibration, aggravated pipeline vibration, increased pipeline fracture, etc., and achieve low system vibration , reduce the hidden danger of pipeline breakage, and reduce the effect of total cost

Inactive Publication Date: 2015-10-28
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the mass of the EGR valve seat and the EGR valve is relatively large, and they are only fixed to the EGR mixer by two bolts. During the operation of the engine, the vibration of the EGR valve seat and the mixer is relatively large, which intensifies the connection with the EGR valve. The vibration of the pipeline increases the hidden danger of pipeline fracture

Method used

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  • Integrated EGR (exhaust gas recirculation) mixer
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Embodiment Construction

[0020] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0021] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0022] Harmful emissions from engines are a major source of air pollution. With the increasing importance of environmental protection, the goal of reducing harmful emissions from engines has become an important direction for engine development in the world today. It is an important task for designers of diesel engines to carry out research on the control methods of harmful emissions from diesel engines. This article briefl...

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Abstract

The invention discloses an integrated EGR (exhaust gas recirculation) mixer. The integrated EGR mixer comprises an EGR valve seat part as well as a mixing and turbulence part, wherein an EGR valve mounting flange is arranged at the top end of the EGR valve seat part, and an exhaust gas inlet is formed in one side wall of the EGR valve seat part; the mixing and turbulence part and the EGR valve seat part are integrally formed, one side of the mixing and turbulence part is a gas mixer gas inlet side, and the other side of the mixing and turbulence part is an engine gas inlet connection pipe gas outlet side; a mixing and turbulence cavity is formed between the gas mixer gas inlet side and the engine gas inlet connection pipe gas outlet side, a mixing cavity is located in the upstream position of the mixing and turbulence cavity, and a mixing core is arranged in the mixing cavity, and a circular exhaust gas groove is formed in the peripheral side of the mixing core and communicated with the exhaust gas inlet of the EGR valve seat part through an exhaust gas runner; a turbulence cavity is formed in the downstream position of the mixing and turbulence cavity. The integrated EGR mixer integrates an EGR mixer, an EGR valve seat and a turbulator and is convenient to mount and small in system vibration, so that the hidden danger of pipeline breakage is reduced.

Description

technical field [0001] The invention relates to the field of exhaust gas recirculation, in particular to an integrated EGR mixer. Background technique [0002] The existing EGR valve seat is designed separately from the EGR mixer and spoiler, and is connected by gasket sealing and bolt fastening. For the seatless EGR valve, it is connected to the EGR valve through a casting or stamping connecting pipe, and then a spoiler is installed behind the connecting pipe. Due to the complicated structure, the EGR mixer is generally omitted or a simple EGR mixer is provided. The mixing effect is not ideal. [0003] At present, the split-type design structure is not compact enough. Compared with the integrated design, the direction of the connected pipeline will be more complicated, the length of the pipeline will increase, and the fixed position of the pipeline is not ideal, which makes the pipeline vibrate greatly and often breaks. Fault. Secondly, the EGR valve seat needs to be fix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/07
CPCY02T10/12
Inventor 王冲有罗浩锋张振平覃玉峰
Owner GUANGXI YUCHAI MASCH CO LTD
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