Power controller and method for hydraulic power system

A technology of hydraulic power system and power control, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve the problems of neglecting the power matching between the hydraulic system and the power source, and failing to realize the power matching of the power transmission system, so as to achieve good power characteristics. , good energy saving effect

Inactive Publication Date: 2008-01-23
SANY HEAVY IND CO LTD (CN)
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, although the load-sensing control realizes the real-time matching of the power of the hydraulic system and the external load, and achieves the goal of high efficiency and energy sa

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
  • Power controller and method for hydraulic power system
  • Power controller and method for hydraulic power system
  • Power controller and method for hydraulic power system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040]The power control device of the hydraulic power system provided by the present invention is based on the hydraulic system under the load sensitive control mode in the prior art. The basic working principle of the hydraulic system will be described first below. Please refer to Figure 1, which shows the schematic diagram of the hydraulic system.

[0041] As shown in the figure, the main pump 102 of the hydraulic system is driven by the engine (not shown), extracts hydraulic oil from the oil tank 101, and supplies oil to the oil circuit through the outlet of the main pump 102, and the outlet of the main pump 102 The pipeline is also connected to the right oil chamber of the pump variable mechanism 103 . Main pump 102 outlet parallel main valve 104, main valve 105; These two main valves all comprise pressure reducing valve and throttling valve in series, main valve 104 comprises pressure reducing valve 1041, throttle valve 1042; Main valve 105 comprises pressure reducing va...

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 discloses a power controlling device and way for a hydraulic power system, which is used for a hydraulic power system for which an engine supplies power, and comprises a main-pump pressure sensor arranged at the outlet of the main pump of the hydraulic system for detecting the system pressure, a pilot pressure sensor arranged at the outlet of the pilot handle for detecting the pilot pressure; a load calculator for receiving the output values from the main-pump pressure sensor and the pilot pressure sensor, and calculating the demanded load power; a throttle setter for receiving the demanded load power and selecting the corresponding control strategy depending upon the demanded load power and the current operation condition of the machine, determining the openness setpoint for the engine throttle and outputting the setpoint to the throttle to control the engine throttle according to the control strategy and actual demanded load power. The device in the invention can control the engine to work on a proper operation point, so that the power output matches with the power demand for the engine, and optimal energy saving can be achieved.

Description

technical field [0001] The invention relates to the hydraulic field, in particular to a power control device of a hydraulic power system. The invention also provides a power control method of the hydraulic power system. Background technique [0002] In construction machinery, hydraulic power systems are mostly used to perform mechanical operations. In order to better realize the control of mechanical operations, it is necessary to implement appropriate power control devices for hydraulic power systems. [0003] In the traditional throttling control system, the hydraulic system keeps the flow of the main pump constant, and the handle controls the main valve core to take out one oil from the total flow for the actuator to work, and the remaining oil heats up. This system actually only uses a part of the hydraulic oil as the oil for actual work, resulting in low system efficiency. [0004] In order to realize the real-time matching of the power of the hydraulic system and th...

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): F02D29/04
Inventor 曹显利李翠英
Owner SANY HEAVY IND CO LTD (CN)
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
PatSnap group products

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