Hydraulic amplifying type ultrahigh-pressure fuel supply device
A technology of fuel supply and hydraulic amplification, which is applied in the direction of fuel injection device, measuring device, charging system, etc. It can solve the problems of low fuel supply efficiency of fuel supply device, difficulty in increasing fuel injection pressure, and easy overheating of fuel, so as to improve the fuel supply. Oil efficiency and waste reduction effects
Inactive Publication Date: 2015-09-02
CHINA NORTH ENGINE INST TIANJIN
View PDF6 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] In order to solve the problems of low fuel supply efficiency of the fuel supply device, easy overheating of fuel oil, and difficulty in increasing fuel injection pressure in the above-mentioned fuel spray characteristic test, the present invention proposes a hydraulically amplified ultra-high pressure fuel supply device, which can realize ultra-high spray oil pressure (300MPa), and can better adapt to the test conditions of low injection interval
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
[0025] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0026] The present invention is a hydraulic amplification type ultra-high pressure fuel supply device, such as figure 1 As shown, it includes a hydraulic oil pump 2, a hydraulic oil tank 15, a pressure regulating valve 13, a fuel oil tank 7, an electronically controlled valve 8, a pressure amplification chamber 9, an electronically controlled three-way valve 10 and a controller 3,
[0027] like figure 2 As shown, there is a T-shaped piston 17 in the pressure amplification chamber 9, the upper part is the small piston head, and the lower part is the large piston head; The side of the small head of the piston can form several times the liquid pressure on the side of the large head of the piston; the side wall surfaces at both ends of the piston 17 are in contact with the inner wall surfaces of the T-shaped cavity in the pressure amplificatio...
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
The invention provides a hydraulic amplifying type ultrahigh-pressure fuel supply device. The hydraulic amplifying type ultrahigh-pressure fuel supply device comprises a hydraulic oil tank, a fuel oil tank, an electric control valve, a pressure amplifying cavity and an electric control three-way valve. A T-shaped piston is arranged in the pressure amplifying cavity, a return spring is arranged in the pressure amplifying cavity, and the pressure amplifying cavity is provided with a hydraulic oil inlet and outlet, a high-pressure oil outlet, a fuel oil inlet and an oil discharge outlet. the fuel oil inlet is communicated with the fuel oil tank via the electric control valve, the hydraulic oil inlet and outlet is communicated with the oil supply pipeline of the hydraulic oil tank via the electric control three-way valve, and the oil discharge outlet is communicated with an oil return pipeline of the hydraulic oil tank, and the high-pressure oil outlet is communicated with an oil injector. The hydraulic amplifying type ultrahigh-pressure fuel supply device has the advantages that by changing pressure in a low-pressure cavity, fuel oil pressure in the high-pressure cavity is adjustable continuously, and pressure value is not over 300 MPa. In addition, the hydraulic amplifying type ultrahigh-pressure fuel supply device can supply fuel oil according to needs without continuous operation when used for atomizing characteristic test with low injection intervals, waste of high-pressure fuel oil is reduced and oil supply efficiency is improved.
Description
technical field [0001] The invention belongs to the technical field of engine fuel supply, and in particular relates to a hydraulic amplification type ultra-high pressure fuel supply device. Background technique [0002] Reducing pollutant emissions and improving fuel economy are two major challenges facing the field of internal combustion engines. Among the many solutions, the use of high-pressure common rail to supply fuel and increase fuel injection pressure is an important technical route. Higher injection pressure helps the crushing process of fuel, which can improve the atomization quality of fuel, promote the full mixing of fuel and air, and improve the combustion effect in the engine cylinder, which can significantly improve the power, economy and emission of the engine. sex. Especially for diesel engines, in order to meet the increasingly stringent emission regulations, the fuel injection pressure of the high-pressure common rail fuel injection system has been incr...
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 IPC IPC(8): F02M65/00F02M63/00
Inventor 白洪林王丽康强永平于波李云广刘玮檀丽宏尹艳君樊巨廷蔡忠周
Owner CHINA NORTH ENGINE INST TIANJIN
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap