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Mechanism for adjusting pressure difference of inlet and outlet of EGR pipeline

A technology of inlet and outlet pressure difference and adjustment mechanism, which is applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of smaller inlet and outlet of EGR pipeline, less EGR components, and inability to achieve fuel-saving effect, etc. The effect of reducing pump air loss and cooling loss, improving fuel consumption and reducing effective flow area

Inactive Publication Date: 2016-11-09
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the engine load increases, the pressure difference between the inlet and outlet of the EGR pipe continues to decrease, so that the EGR components that actually enter the cylinder to participate in combustion are very small, and better fuel-saving effects cannot be achieved.

Method used

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  • Mechanism for adjusting pressure difference of inlet and outlet of EGR pipeline
  • Mechanism for adjusting pressure difference of inlet and outlet of EGR pipeline
  • Mechanism for adjusting pressure difference of inlet and outlet of EGR pipeline

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing, the present invention will be further described:

[0027] Figure 1 to Figure 4 Shown is an EGR pipeline inlet and outlet pressure difference adjustment mechanism, including the adjustment mechanism assembly 1 . The adjustment mechanism assembly 1 includes a valve body 11, a baffle plate 12, a rotating shaft 13, a rocker arm 16 and a pull rod 17, such as figure 1 and figure 2 As shown; the baffle plate 12 is arranged in the valve body 11 through the rotating shaft 13, the baffle plate 12 is arranged on the rotating shaft 13, the two ends of the rotating shaft 13 are respectively arranged in the valve body 11 through the bearing 14, and the baffle plate 12 is arranged on the rotating shaft 13 It can rotate 90 degrees with the rotating shaft 13 as the central axis. One end of the rotating shaft 13 stretches out of the valve body 11 and is rigidly connected to one end of the rocking arm 16 , and the other end of the rocki...

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Abstract

The invention relates to a mechanism for adjusting the pressure difference of an inlet and an outlet of an EGR pipeline. The mechanism is characterized by comprising a valve body (11), a baffle (12), a rotary shaft (13), a rocking arm (16) and a pull rod (17); the baffle (12) is arranged in the valve body (11) through the rotary shaft (13), and the baffle (12) can rotate by 90 degrees along with the rotary shaft (13) with the rotary shaft (13) as the center axis; the end head of one end of the rotary shaft (13) stretches out of the valve body (11) to be rigidly connected with one end of the rocking arm (16), and the other end of the rocking arm (16) is rotationally connected with one end of the pull rod (17); and the pull rod (17) drives the rotary shaft (13) to rotate through the rocking arm (16) to drive the baffle (12) to rotate by a certain angle in the valve body (11), therefore, the effective flow area in the valve body (11) is changed to change exhaust resistance, and finally the pressure at the EGR inlet is changed. Different pressure differences can be provided according to different loads of an engine, the EGR rate can reach a design value, and a more remarkable oil-saving effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of automobile engines, and in particular relates to an EGR pipeline inlet and outlet pressure difference adjustment mechanism. Background technique [0002] The fourth-stage fuel consumption limit standard officially implemented on January 1, 2016. By 2020, the average fuel consumption of passenger cars produced by all car companies will drop from 6.9L / 100km (third stage) in 2015 to 5.0L / 100km (fourth stage), with an average annual decline of about 6.2%. In order to reduce fuel consumption, many main engine manufacturers have invested a lot of research and development costs to develop fuel-saving technologies. The external exhaust gas circulation technology (EGR technology) is not only low in cost, but also has a significant fuel saving effect, and has been applied to internal combustion engines by more and more main engine manufacturers. According to the exhaust gas intake position and intake position, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M26/13F02M26/52
Inventor 陈伟国王伟金晖李玉琦
Owner CHERY AUTOMOBILE CO LTD
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