CN111910706A - Output power control method and system for excavator in air conditioner refrigeration mode - Google Patents
Output power control method and system for excavator in air conditioner refrigeration mode Download PDFInfo
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- CN111910706A CN111910706A CN202010920976.6A CN202010920976A CN111910706A CN 111910706 A CN111910706 A CN 111910706A CN 202010920976 A CN202010920976 A CN 202010920976A CN 111910706 A CN111910706 A CN 111910706A
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- engine
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- output
- hydraulic oil
- air conditioner
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2004—Control mechanisms, e.g. control levers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses an output power control method and system under an air conditioner refrigeration mode of an excavator, which comprises the following steps: according to the working state of the air-conditioning refrigeration mode of the excavator, the working pressure of the air-conditioning compressor is obtained, the output flow of the hydraulic oil is controlled by controlling the output rotating speed and the hydraulic oil discharge capacity of the power device, and the power device is controlled to drive the air-conditioning compressor to work at the target output power. The output rotating speed and the hydraulic oil discharge capacity of the power device are controlled by the complete machine controller, so that the power device is controlled to drive the air conditioner compressor to work with target output power, the power loss caused by the rotation of the air conditioner compressor is accurately controlled, the power loss of an engine is reduced, and the oil consumption is reduced.
Description
Technical Field
The invention relates to the technical field of excavator mechanical control, in particular to an output power control method and system for an excavator in an air conditioner refrigeration mode.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The rated net power of the engine of the excavator consists of all components consuming power, one part of the power of the engine is used for radiating heat of a fan of the engine, one part of the power of the engine drives a generator to work, one part of the power of the engine is used for working an air conditioner, the other part of the power of the engine is used for internal loss of the engine, namely the engine overcomes the work done by friction, and the rest part of the power of the engine is real hydraulic power; namely: hydraulic power is the internal loss of engine power, fan, generator, air conditioner and engine.
The air conditioner only needs the engine to drive the compressor to do work during the refrigeration work, and the compressor idles in the rest time, but the inventor finds that the power loss of the engine in the refrigeration mode of the air conditioner cannot be controlled by the existing technical scheme, so that the power of the engine is wasted, and certain loss exists in the oil consumption of the excavator.
Disclosure of Invention
In order to solve the problems, the invention provides an output power control method and system for an excavator in an air conditioning refrigeration mode.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides an output power control method in an air conditioning refrigeration mode of an excavator, including:
according to the working state of the air-conditioning refrigeration mode of the excavator, the working pressure of the air-conditioning compressor is obtained, the output flow of the hydraulic oil is controlled by controlling the output rotating speed and the hydraulic oil discharge capacity of the power device, and the power device is controlled to drive the air-conditioning compressor to work at the target output power.
In a second aspect, the present invention provides an output power control system in an air conditioning cooling mode of an excavator, including: the whole machine controller, the air conditioner controller and the power device;
the whole machine controller receives the working pressure of the air-conditioning compressor in the air-conditioning refrigeration mode of the excavator, which is sent by the air-conditioning controller;
and the whole machine controller controls the output flow of the hydraulic oil by controlling the output rotating speed and the hydraulic oil discharge capacity of the power device according to the working pressure of the compressor, so that the power device is controlled to drive the air conditioner compressor to work at the target output power.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the output power of the engine is accurately regulated and controlled by controlling the output flow of the hydraulic oil, the output power of the engine is ensured to be within a preset range, the control on the output flow of the hydraulic oil is realized by controlling the output rotating speed of the engine and the hydraulic oil discharge capacity of a main pump, the power loss caused by the rotation of the air compressor can be accurately controlled, the power of the engine can be accurately controlled, the power loss of the engine is reduced, and the oil consumption is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a flowchart of an output power control method in an air conditioning refrigeration mode of an excavator according to embodiment 1 of the present invention;
fig. 2 is a structural diagram of an output power control system in an air-conditioning refrigeration mode of an excavator according to embodiment 2 of the present invention.
The specific implementation mode is as follows:
the invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should be understood that the terms "comprises" and "comprising", and any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example 1
As shown in fig. 1, the present embodiment provides a method for controlling output power in an air-conditioning cooling mode of an excavator, including:
according to the working state of the air-conditioning refrigeration mode of the excavator, the working pressure of the air-conditioning compressor is obtained, the output flow of the hydraulic oil is controlled by controlling the output rotating speed and the hydraulic oil discharge capacity of the power device, and the power device is controlled to drive the air-conditioning compressor to work at the target output power.
One part of the power of the engine is used for heat dissipation of an engine fan, one part of the power is used for driving the generator to work, one part of the power is used for air conditioning work, the other part of the power is the internal loss of the engine, namely, the engine overcomes the work done by friction, and the rest part of the power is the real hydraulic power, namely: the hydraulic power is the internal loss of an engine power, a fan, a generator, an air conditioner and the engine;
the excavator air conditioner only needs the engine to drive the compressor to work in the refrigeration mode, and the compressor idles in other modes.
As can be understood, the operating state of the air conditioner includes: ON, OFF, cooling, heating; in the embodiment, because the air conditioner needs to consume the power of the engine when refrigerating, the working state of the air conditioner is received, whether the air conditioner is in the refrigerating mode is judged, and if not, the power of the engine is not consumed; if yes, accurately controlling the power of the engine of the excavator, specifically:
according to the power, the pressure and the flow, the flow and the displacement and the rotating speed, the electromagnetic valve of the main pump is controlled through different currents according to the working pressure of the air-conditioning compressor and the target output power of the engine, the valve core of the electromagnetic valve is pushed to slide, and therefore the displacement of hydraulic oil in the main pump is controlled;
simultaneously, rotating at a target rotating speed through the engine by an engine controller;
the engine and the main pump form a power device, the main pump is driven by the engine, sucks hydraulic oil from a hydraulic oil tank and inputs the hydraulic oil into the execution element;
the output flow of the main pump is controlled by combining the discharge capacity of hydraulic oil and the output rotating speed of the engine, the output rated power of the engine is controlled, and the accurate control of the power of the whole machine is realized.
Example 2
As shown in fig. 2, the present embodiment provides an output power control system in an air conditioning cooling mode of an excavator, including: the system comprises a complete machine controller, an engine controller and an air conditioner control module;
the air conditioner control module is communicated with the whole machine control device through a CAN bus;
the air conditioner control module sends the working state of the air conditioner, namely ON, OFF, refrigeration or heating to the complete machine controller through the CAN bus, the complete machine controller judges according to the working state sent by the air conditioner module, and when the air conditioner is in a refrigeration mode, the air conditioner compressor works and consumes the power of an engine; when the air conditioner is in other working states, the power of the engine is not consumed;
the whole engine controller communicates with the engine controller through a CAN bus, and transmits a rotating speed signal to the engine controller through the CAN bus according to the required engine power, and the engine controller controls the rotating speed of the engine;
the whole machine controller directly drives a main pump electromagnetic valve through an electric signal to push a valve core of the electromagnetic valve to slide and control the discharge capacity of the pump;
according to the power, the pressure and the flow, the displacement and the rotating speed; the output flow of the main pump is controlled by combining the discharge capacity of hydraulic oil and the output rotating speed of the engine, the output rated power of the engine is controlled, and the accurate control of the power of the whole machine is realized.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. An output power control method under an air conditioner refrigeration mode of an excavator is characterized by comprising the following steps:
according to the working state of the air-conditioning refrigeration mode of the excavator, the working pressure of the air-conditioning compressor is obtained, the output flow of the hydraulic oil is controlled by controlling the output rotating speed and the hydraulic oil discharge capacity of the power device, and the power device is controlled to drive the air-conditioning compressor to work at the target output power.
2. The method as claimed in claim 1, wherein the power plant includes an engine and a main pump, and the engine drives the main pump to suck hydraulic oil from the hydraulic oil tank by controlling the output speed.
3. The method as claimed in claim 2, wherein the main pump is further controlled by a main pump solenoid valve, and the displacement of hydraulic oil in the main pump is controlled by controlling the sliding of a spool of the main pump solenoid valve.
4. The method as claimed in claim 2, wherein the output flow rate of the hydraulic oil in the main pump is obtained as a product of the output rotation speed of the engine and the displacement of the hydraulic oil, thereby controlling the output power of the engine.
5. The utility model provides an output power control system under excavator air conditioner refrigeration mode which characterized in that includes: the whole machine controller, the air conditioner controller and the power device;
the whole machine controller receives the working pressure of the air-conditioning compressor in the air-conditioning refrigeration mode of the excavator, which is sent by the air-conditioning controller;
and the whole machine controller controls the output flow of the hydraulic oil by controlling the output rotating speed and the hydraulic oil discharge capacity of the power device according to the working pressure of the compressor, so that the power device is controlled to drive the air conditioner compressor to work at the target output power.
6. The system of claim 5, wherein the machine controller communicates with the air conditioner controller via a CAN bus to receive the operating status of the air conditioner sent by the air conditioner controller and determine whether the air conditioner is in the cooling mode, and if not, no engine power is consumed.
7. The system of claim 5, wherein the power plant comprises an engine and a main pump, the engine is driven by an engine controller, and the overall controller is connected to the engine controller and controls the engine to drive the main pump by output speed.
8. The system as claimed in claim 7, wherein the overall machine controller communicates with the engine controller via the CAN bus, and the engine controller is controlled to rotate the engine at the target speed.
9. The system of claim 7, wherein the machine controller directly drives the main pump solenoid valve to push the spool of the main pump solenoid valve to slide, thereby controlling the displacement of hydraulic oil in the main pump.
10. The system of claim 5, wherein the overall machine controller is configured to control the power output of the power plant by deriving the output flow of hydraulic oil based on the product of the output speed of the power plant and the displacement of hydraulic oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920976.6A CN111910706A (en) | 2020-09-04 | 2020-09-04 | Output power control method and system for excavator in air conditioner refrigeration mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010920976.6A CN111910706A (en) | 2020-09-04 | 2020-09-04 | Output power control method and system for excavator in air conditioner refrigeration mode |
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| CN111910706A true CN111910706A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010920976.6A Pending CN111910706A (en) | 2020-09-04 | 2020-09-04 | Output power control method and system for excavator in air conditioner refrigeration mode |
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| CN (1) | CN111910706A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854354A (en) * | 2021-01-12 | 2021-05-28 | 徐州徐工矿业机械有限公司 | Excavator environment self-adaptive control system and control method |
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| CN102322329A (en) * | 2011-08-17 | 2012-01-18 | 上海三一重机有限公司 | Intelligent control method of engine cooling fan for engineering machinery |
| CN104912783A (en) * | 2015-05-06 | 2015-09-16 | 安徽江淮汽车股份有限公司 | Method for controlling displacement of air condition compressor of automobile |
| CN105625497A (en) * | 2014-11-20 | 2016-06-01 | 斗山工程机械（中国）有限公司 | Control method and device for hydraulic oil fan rotating speed and excavator |
| CN107867146A (en) * | 2017-11-22 | 2018-04-03 | 徐工集团工程机械有限公司 | A kind of pressure regulating system of craneman's house hydraulic-driven air conditioner |
| CN108621748A (en) * | 2018-05-09 | 2018-10-09 | 安徽江淮汽车集团股份有限公司 | Double-compressor air-conditioning control system for refrigerator carriage |
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2020
- 2020-09-04 CN CN202010920976.6A patent/CN111910706A/en active Pending
Patent Citations (6)
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| KR100849502B1 (en) * | 2007-07-11 | 2008-07-31 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Control method of cooling fan speed of excavator |
| CN102322329A (en) * | 2011-08-17 | 2012-01-18 | 上海三一重机有限公司 | Intelligent control method of engine cooling fan for engineering machinery |
| CN105625497A (en) * | 2014-11-20 | 2016-06-01 | 斗山工程机械（中国）有限公司 | Control method and device for hydraulic oil fan rotating speed and excavator |
| CN104912783A (en) * | 2015-05-06 | 2015-09-16 | 安徽江淮汽车股份有限公司 | Method for controlling displacement of air condition compressor of automobile |
| CN107867146A (en) * | 2017-11-22 | 2018-04-03 | 徐工集团工程机械有限公司 | A kind of pressure regulating system of craneman's house hydraulic-driven air conditioner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854354A (en) * | 2021-01-12 | 2021-05-28 | 徐州徐工矿业机械有限公司 | Excavator environment self-adaptive control system and control method |
| CN112854354B (en) * | 2021-01-12 | 2022-08-05 | 徐州徐工矿业机械有限公司 | Excavator environment self-adaptive control system and control method |
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Application publication date: 20201110 |
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