Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Dual-voltage driving circuit provided with natural gas injection solenoid valves

A drive circuit and solenoid valve technology, applied in fuel injection devices, engine components, engine control, etc., can solve the problems of low reliability, low control frequency, and low precision, and achieve low cost, simple drive circuit structure, and ease of use. Extend the effect of the application

Inactive Publication Date: 2018-07-20
FUZHOU UNIV
View PDF7 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the drive circuit is simple to implement, it has problems such as low reliability, low control frequency, and low precision.

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
  • Dual-voltage driving circuit provided with natural gas injection solenoid valves
  • Dual-voltage driving circuit provided with natural gas injection solenoid valves
  • Dual-voltage driving circuit provided with natural gas injection solenoid valves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0017] The dual-pressure drive circuit of the natural gas injection solenoid valve of the present invention includes two high-low side drive circuits and a current sampling circuit to drive two solenoid valves for natural gas injection; the two high-low side drive circuits include a high-voltage high-side drive circuit, The first cylinder selection low-side drive circuit, the low-voltage high-side drive circuit, and the second cylinder selection low-side drive circuit, wherein the high-voltage high-side drive circuit 1 is connected to the high-voltage power supply of the external power supply module 8, and is also connected to the first solenoid valve respectively. 2 is connected to the second solenoid valve 6; the low-voltage high-side drive circuit 5 is connected to the low-voltage power supply of the external power module 8, and is also...

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 relates to a dual-voltage driving circuit provided with natural gas injection solenoid valves. The dual-voltage driving circuit comprises two paths of high-side and low-side driving circuits, a current sampling circuit and the two solenoid valves for driving natural gas injection. The high-voltage high-side driving circuit is connected with a high-voltage power supply of an externalpower module and also is connected with the first solenoid valve and the second solenoid valve. The low-voltage high-side driving circuit is a lower-voltage power supply of the external power module and is also connected with the first solenoid valve and the second solenoid valve. The first selected cylinder low-side driving circuit is connected with the first solenoid valve. The second selected cylinder low-side driving circuit is connected with the second solenoid valve. The first solenoid valve and the second solenoid valve are connected with the current sampling circuit. The two paths of high-side and low-side driving circuits and the current sampling circuit are all connected with a control unit. The dual-voltage driving circuit achieves high-precision control over the natural gas injection solenoid valves at high frequency and is simple in structure and low in cost and facilitates extensive application.

Description

technical field [0001] The invention relates to a solenoid valve injection drive circuit for a natural gas (liquefied natural gas) / diesel dual-fuel engine, which belongs to the technical field of electronically controlled engine hardware systems, in particular to a dual-pressure drive circuit for a natural gas injection solenoid valve. Background technique [0002] In traditional high-side and low-side solenoid valve drive circuits, each solenoid valve shares a high-side drive circuit, including a high-side drive power supply and a high-side power drive tube. Each solenoid valve has a low-side drive circuit, the main device is a low-side power triode, and sampling resistors are usually set at the common end of each solenoid valve. When working, the driving current is adjusted by changing the duty cycle of the high-side power transistor control pulse, and the cylinder selection function is realized by selecting the low-side power transistor. Although the driving circuit is s...

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 Applications(China)
IPC IPC(8): F02M51/06F02D19/06
CPCF02D19/0647F02M51/061Y02T10/30
Inventor 彭育辉陈祥榛汤家有
Owner FUZHOU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com