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

Hybrid power full hydraulic loading machine hydraulic system based on pressure common rail system

A common rail system, hybrid technology, applied in the direction of earth mover/shovel, construction, etc., can solve the problems of insignificant energy saving effect, low energy recovery rate of oil-electric hybrid system, etc., to improve fuel economy, Simple structure and low emission effect

Inactive Publication Date: 2013-06-19
TIANJIN ENG MACHINERY INST
View PDF5 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a hydraulic system for a hybrid fully hydraulic loader based on a pressure common rail system to solve the problems of low energy recovery rate and inconspicuous energy-saving effect of an oil-electric hybrid power system

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
  • Hybrid power full hydraulic loading machine hydraulic system based on pressure common rail system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0038] combined with figure 1 Describe the second specific embodiment of the present invention, the traveling hydraulic mechanism 9 includes a traveling hydraulic pump or a hydraulic motor; the traveling hydraulic mechanism control assembly 7 is mechanically connected to the traveling hydraulic mechanism 9, and the hydraulic transformer control assembly is mechanically connected to the hydraulic transformer; The hydraulic transformer includes a first hydraulic transformer 16, a second hydraulic transformer 30 and a third hydraulic transformer 32; the first hydraulic transformer 16 is connected to the boom oil tank, the second hydraulic transformer 30 is connected to the bucket oil tank, and the third hydraulic transformer The hydraulic transformer 32 is connected to the steering oil tank. Other components and connections are the same as those in the first embodiment. The boom oil tank includes the first boom oil tank 15 and the second boom oil tank 28; the bucket oil tank inc...

specific Embodiment approach

[0039] combined with figure 1 Describe the third specific embodiment of the present invention, the oil inlet port of the constant pressure variable pump 24 is connected to the oil tank 23 through the second filter 21; the oil inlet port of the quantitative pump 2 is connected to the oil tank 23 through the first filter 22; the second one-way The oil outlet port of the valve 27 is connected to the oil tank 23 through the fifth filter 18 , and the oil inlet port of the third check valve 25 is connected to the oil tank 23 through the sixth filter 26 . Other components and connections are the same as those in the first embodiment.

[0040] combined with figure 1 Describe the fourth specific embodiment of the present invention, the control input end of the constant pressure variable pump 24 is connected with the first control output end of the central controller 17, and the control input end of the electromagnetic reversing valve 6 is connected with the second control output end o...

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 provides a hybrid power full hydraulic loading machine hydraulic system based on a pressure common rail system. The system is used for solving the problems that an existing hybrid power system is low in transmission efficiency, low in energy recycling rate and low in reusing rate. In the process of braking, a walking hydraulic pump or a motor works in a pump operating condition, braking kinetic energy of a loading machine is recycled and stored in a high-pressure hydraulic accumulator. In a working condition of descending of a movable arm cylinder, the pressure is changed through a hydraulic transformer, and hydraulic energy is stored in the high-pressure hydraulic accumulator. In the process of starting of a vehicle and lifting of the movable arm cylinder, the recycled hydraulic energy can supply power for the vehicle. An active stamping function of the hydraulic pump plays the role of adjusting operating conditions of an engine so that the engine works in the optimum economic zone, and meanwhile the defect that the high-pressure hydraulic accumulator is small in energy density is recovered. The hybrid power full hydraulic loading machine hydraulic system has the advantages of being low in complexity, good in sealing performance, compact in structure, light, low in manufacturing cost and not prone to be polluted.

Description

technical field [0001] The invention relates to a power system of a loader, in particular to a hydraulic system of a hybrid fully hydraulic loader based on a pressure common rail system. Background technique [0002] The loader needs to drive and perform loading operations. Part of the power of the engine drives the traveling mechanism through the hydraulic torque converter and gearbox, and the other part drives the hydraulic cylinder through the hydraulic pump to realize steering and loading. There are frequent start-stop and reciprocating movements during the operation of the loader. Due to the heavy weight of the whole machine, a large amount of energy will be released when decelerating and braking. This part of energy is usually consumed on the valve port of the hydraulic valve, which not only wastes energy, but also It will cause heat generation in the system and a reduction in component life. The transmission efficiency of the hydraulic transmission is low, especially...

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
IPC IPC(8): E02F9/20E02F9/22
Inventor 于安才
Owner TIANJIN ENG MACHINERY INST
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