Unlock instant, AI-driven research and patent intelligence for your innovation.

A controllable egr system with integrated egr valve

A technology of EGR valve and sector valve, applied in the field of EGR system, can solve the problems of not being able to use cold and hot EGR at the same time, not having the throttling function before the vortex, and not being able to realize the EGR rate.

Active Publication Date: 2020-10-27
DONGFENG COMML VEHICLE CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] First of all, this design can only realize cold EGR or hot EGR, and cannot use cold and hot EGR at the same time, resulting in limited adjustment range of EGR temperature and EGR rate;
[0005] Secondly, this design does not have a throttle function before the vortex, and cannot adjust the EGR driving pressure difference, so that a higher EGR rate cannot be achieved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A controllable egr system with integrated egr valve
  • A controllable egr system with integrated egr valve
  • A controllable egr system with integrated egr valve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] see Figure 1 to Figure 6 , a controllable EGR system integrating an EGR valve, including an engine 2, a compressor 1 and a turbine 3, a plurality of cylinders 21 are arranged inside the engine 2, and the compressor 1 is connected to the engine 2 through an intake manifold 22 The other end of the engine 2 communicates with the turbine 3 through the exhaust manifold 23; the controllable EGR system also includes a cooler 4, an integrated EGR valve 5 and a mixer 6, and the integrated EGR valve 5 includes exhaust The inlet 51 communicates with the hot EGR outlet 52, the cold EGR outlet 53, and the turbine outlet 54. The exhaust inlet 51 communicates with the engine 2 through the exhaust manifold 23, and the turbine outlet 54 communicates with the intake end of the turbine 3. The EGR outlet 53 communicates with the intake end of the cooler 4, the outlet end of the cooler 4, the hot EGR outlet 52, and the outlet end of the compressor 1 all communicate with the inlet end of th...

Embodiment 2

[0054] Basic content is the same as embodiment 1, the difference is:

[0055] The gas outlet of the cooler 4 communicates with the inlet of the cold one-way valve 40 , the gas outlet of the cold one-way valve 40 communicates with the inlet of the mixer 6 , and the hot EGR outlet 52 communicates with the hot one-way valve 50 The air inlet port of the thermal check valve 50 communicates with the air inlet end of the mixer 6 .

Embodiment 3

[0057] Basic content is the same as embodiment 1, the difference is:

[0058] The integrated EGR valve 5 includes a valve housing 55 and a valve inner cavity 56 provided therein. The top of the valve housing 55 is provided with an exhaust inlet 51, and the right side of the valve housing 55 is provided with a turbine outlet 54. The left side of the body 55 is provided with a cold EGR outlet 53 and a hot EGR outlet 52 arranged up and down, and the exhaust inlet 51, the hot EGR outlet 52, the cold EGR outlet 53, and the turbine outlet 54 are all communicated with the valve cavity 56; The inside of the valve cavity 56 is provided with a fan-shaped valve plate 57 which is wide outside and narrow inside. The outer end of the fan-shaped valve plate 57 rotates along the wall of the valve cavity 56. Set, the length of the fan-shaped valve plate 57 is less than the radius of the cross section of the valve cavity 56; the area of ​​the exhaust inlet 51 is less than or equal to the covera...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a system with an integrated EGR valve capable of controlling EGR. The system involves the integrated EGR valve, an engine, a gas compressor, a turbine, a cooler and a mixer, wherein the gas compressor communicates with one end of the engine through a gas inlet manifold, the other end of the engine communicates with the turbine through an exhaust manifold, the integrated EGRvalve comprises an exhaust inlet, a hot EGR outlet, a cold EGR outlet and a turbine outlet, and the exhaust inlet communicates with the hot EGR outlet, the cold EGR outlet and the turbine outlet; theexhaust inlet communicates with the engine through the exhaust manifold, the turbine outlet communicates with the gas inlet end of the turbine, the cold EGR outlet communicates with the gas inlet endof the cooler, the gas outlet end of the cooler, the hot EGR outlet and the gas outlet end of the gas compressor all communicate with the gas inlet end of the mixer, and the gas outlet end of the mixer communicates with the engine through the gas inlet manifold. The system not only increases the EGR rate and expands the EGR temperature adjusting range, but also has pre-vortex throttling capacity.

Description

technical field [0001] The invention relates to an EGR system, which belongs to the technical field of engine exhaust gas recirculation, and in particular relates to a controllable EGR system with an integrated EGR valve, which is specifically suitable for improving the EGR rate and the adjustment range of EGR temperature, and has the capability of throttling before the vortex . Background technique [0002] EGR is the exhaust gas recirculation system, which refers to introducing part of the exhaust gas of the engine into the cylinder to reduce the combustion temperature in the cylinder, thereby reducing NOx emissions. EGR is divided into cold EGR and hot EGR. Cold EGR refers to using a cooler to cool part of the exhaust gas and then introduces it into the cylinder. Hot EGR refers to the exhaust gas directly entering the cylinder without passing through the cooler. The temperature of cold EGR is lower than that of hot EGR, which can Realize lower in-cylinder combustion temp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F02M26/05F02M26/71F02M26/28F02M26/33
CPCF02M26/05F02M26/28F02M26/33F02M26/71
Inventor 陈珏李智陈伟建徐敏刘亚萌胡晶晶
Owner DONGFENG COMML VEHICLE CO LTD