Exhaust gas recirculation device
A technology of exhaust gas recirculation and valve ring, which is applied in the direction of exhaust gas recirculation, charging system, engine components, etc., can solve the problems of exhaust gas affecting service life, EGR rate cannot be accurately controlled, EGR valve angle sensing error is large, etc., to improve The effects of followability, precise control of EGR rate, and strong performance stability
Pending Publication Date: 2022-04-08
渭南美益特发动机减排技术有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] Therefore, the present invention provides an exhaust gas recirculation device, which solves the problems that the EGR valve has a large angle induction error, the EGR rate cannot be accurately controlled, and the exhaust gas easily enters the EGR cavity and affects the service life.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0029] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] see figure 1 , figure 2 , image 3 and Figure 4 , provide an exhaust gas recirculation device, including a valve body 1, a valve chamber 2 is provided inside the valve body 1, and the valve chamber 2 is connected with an air inlet 3 and an air outlet 4, and the valve body 1 is provided with a valve ring 5 and a valve Rod 6, one end of the valve rod 6 is connected with a valve disc 7,...
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
Login to View More Abstract
According to the exhaust gas recirculation device, a valve cavity is formed in a valve body, the valve cavity is connected with an air inlet and an air outlet, a valve ring and a valve rod are arranged in the valve body, one end of the valve rod is connected with a valve clack, and an airflow channel is formed between the valve clack and the valve ring; the other end of the valve rod is connected with an executing mechanism; the executing mechanism is connected with a driving mechanism; the driving mechanism drives the valve rod to move through the executing mechanism, the valve rod moves to enable the size of the airflow channel between the valve clack and the valve ring to be changed, and the size change of the airflow channel changes the amount of waste gas flowing between the air inlet and the air outlet. A guide sleeve is arranged on the periphery of the valve rod; a carbon deposition scraper is arranged on the side, away from the valve clack, of the guide sleeve. And the valve rod penetrates through a central through opening of the carbon deposition scraper. A graphite sleeve is arranged on the side, away from the guide sleeve, of the carbon deposition scraper, and the valve rod penetrates through a center through opening of the graphite sleeve. Displacement of the valve rod can be accurately controlled, the following performance of the valve is improved, the EGR rate is accurately controlled, and the performance stability is high.
Description
technical field [0001] The invention relates to an exhaust gas recirculation device, which belongs to the technical field of engine exhaust emission recirculation. Background technique [0002] Exhaust gas recirculation, or "EGR" technology, is a low-cost, small engine modification that can effectively reduce NO X The control method for emission and fuel consumption reduction requires different EGR rates when the engine works under different working conditions, that is, the amount of exhaust gas is different, so the flow of EGR needs to be controlled. [0003] Applying EGR to a gasoline engine can increase the intake air volume accordingly. The increase of the EGR rate can reduce the throttling loss of the gasoline engine under low-to-medium load conditions, and reduce the fuel consumption rate of the gasoline engine. According to different engine and EGR control strategies, the effective fuel consumption rate can be 3%-8% reduction. [0004] Since the exhaust gas recircul...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): F02M26/54F02M26/66F02M26/65
Inventor 景建周杨晓明姜晓鹏
Owner 渭南美益特发动机减排技术有限公司