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

Marine dual-fuel/gas engine multipoint multi-stage injection system

A gas engine and injection system technology, which is applied to combustion engines, machines/engines, internal combustion piston engines, etc. It can improve the accuracy of gas injection control, improve power performance, and improve the uniformity of fuel distribution.

Active Publication Date: 2014-05-14
HARBIN ENG UNIV
View PDF8 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Compared with single-point injection, the above-mentioned patents have the advantages of high control accuracy, better economy and lower emissions. However, when using a separate injection valve for each cylinder to supply air, it is impossible to take into account both the high-speed and heavy-load conditions of the engine and the low-speed The gas injection flow rate and precision requirements in light load conditions make the engine economy and emission worse

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
  • Marine dual-fuel/gas engine multipoint multi-stage injection system
  • Marine dual-fuel/gas engine multipoint multi-stage injection system
  • Marine dual-fuel/gas engine multipoint multi-stage injection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Attached below Figure 1-5b The present invention is further described.

[0023] A marine dual-fuel / gas engine gas multi-point multi-stage injection system mainly includes a gas fuel storage and supply system, a gas multi-point multi-stage injection assembly and a control system 16.

[0024] The gas fuel storage and supply system is mainly composed of gas fuel storage device 15, fuel supply pipeline, filter 14, pressure regulating device 12 and switch solenoid valve 13;

[0025] The gas multi-point multi-stage injection assembly is composed of a gas rail pipe 9, a gas pressure stabilizing chamber 8, a gas collector 6 and an air injection valve group 7. The gas rail pipe 9 is fixed on the engine and connected with the gas stabilizing chamber 8. The gas injection valve group 7 is assembled in the gas plenum chamber 8 and installed on the gas collector 6 which is installed on the intake manifold 3 .

[0026] The control system 16 is connected with each gas injection valv...

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 the field of fuel injection devices and control, in particular to a marine dual-fuel / gas engine multipoint multi-stage injection system. The marine dual-fuel / gas engine multipoint multi-stage injection system comprises an air cylinder, an intake valve, an intake manifold, an exhaust valve, an exhaust manifold, a gas collector, an injection valve block, a pressure stabilizing cavity, an air rail pipe, a gas pressure sensor, a gas temperature sensor, a pressure regulator, an on-off solenoid valve, a filter, a gas storage unit, a control system and a lambda sensor. The injection valve block can be used to solve problems about development, modification and matching of dual-fuel or gas engines, gas supply requirements for high flow under high load and high revolution speed and small flow under low load of the engines can be met, gas injection control precision of the dual-fuel / gas engines is increased, fuel distribution uniformity of different cylinders is improved, and thus dynamic property, economical efficiency and emission performance of the engines are improved.

Description

technical field [0001] The invention relates to the field of fuel injection devices and controls, in particular to a multi-point multi-stage fuel gas injection system for a marine dual-fuel / gas engine. Background technique [0002] With the depletion of traditional fossil energy, a high-quality alternative fuel - natural gas is gradually being valued by countries all over the world. The dual-fuel / gas multi-point injection engine is a form of technical application of alternative energy sources. At present, there are still many technical problems to be solved. First, due to the large number of diesel engine models and wide power ranges in existing ships, the existing diesel engine It is impossible to use the existing single jet valve in the market to match each type of engine when carrying out dual-fuel transformation; secondly, the dual-fuel / gas multi-point injection engine requires the gas supply system to be able to operate in a short time under high-load and high-speed con...

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): F02D19/06F02B69/04
CPCY02T10/30
Inventor 杨立平石兴超宋恩哲姚崇孟亚刚靖海国
Owner HARBIN ENG 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