WO2012122756A1 - 一种工程机械后处理再生控制方法及装置 - Google Patents

一种工程机械后处理再生控制方法及装置 Download PDF

Info

Publication number
WO2012122756A1
WO2012122756A1 PCT/CN2011/076252 CN2011076252W WO2012122756A1 WO 2012122756 A1 WO2012122756 A1 WO 2012122756A1 CN 2011076252 W CN2011076252 W CN 2011076252W WO 2012122756 A1 WO2012122756 A1 WO 2012122756A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
load
electromagnetic proportional
regeneration
construction machinery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2011/076252
Other languages
English (en)
French (fr)
Inventor
曹东辉
舒全禄
石向星
孙军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Sany Intelligent Control Equipment Co Ltd
Sany Heavy Machinery Ltd
Original Assignee
Hunan Sany Intelligent Control Equipment Co Ltd
Sany Heavy Machinery Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hunan Sany Intelligent Control Equipment Co Ltd, Sany Heavy Machinery Ltd filed Critical Hunan Sany Intelligent Control Equipment Co Ltd
Publication of WO2012122756A1 publication Critical patent/WO2012122756A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • 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
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • E02F9/2228—Control of flow rate; Load sensing arrangements using pressure-compensating valves including an electronic controller
    • 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
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2282—Systems using center bypass type changeover valves
    • 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
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems
    • 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
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • 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
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N9/00—Electrical control of exhaust gas treating apparatus
    • F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
    • F02D41/0245—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by increasing temperature of the exhaust gas leaving the engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
    • F02D2041/026—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus using an external load, e.g. by increasing generator load or by changing the gear ratio
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the present invention relates to a power control method, and in particular to a construction machine post-processing regeneration control method and apparatus.
  • the construction machinery mainly consists of a traveling device, a slewing device, a cab, a working device and a power device.
  • the power device is generally a diesel engine engine.
  • the diesel engine is an internal combustion engine that uses diesel as a fuel. After burning the fuel, the piston in the cylinder is pushed back and forth. Motion 0 converts the chemical energy in the fuel into mechanical energy that drives the vehicle's action. It has the advantages of high thermal efficiency, relatively high power and saving diesel fuel, and thus is widely used in the power plant of construction machinery.
  • An object of the present invention is to provide a construction machinery post-processing regeneration control method and apparatus, using the method, so that The load and the hydraulic system are independent of each other, and regeneration is not required to stop the work of the construction machinery, which improves the work efficiency.
  • the technical solution adopted by the present invention is: A construction machinery post-processing regeneration control method, when the construction machinery is in a light load or idle state, the exhaust temperature of the engine is lower than the automatic regeneration temperature.
  • the engine controller sends a signal to the main controller to increase the relief pressure of the electromagnetic proportional relief valve, increase the engine PTO port load, increase the engine exhaust temperature, and achieve regeneration.
  • An engineering machinery post-processing regeneration control device includes a loading pump and an electromagnetic proportional relief valve connected to the loading pump output port, the input port of the loading pump is connected to a PTO of the engineering machinery engine, and the electromagnetic ratio
  • the control end of the relief valve is connected to the engineering machinery main controller, and the oil return ports of the loading pump and the electromagnetic proportional relief valve are respectively connected to the oil tank.
  • the construction machinery is currently widely used, and both adopt a diesel engine, and a particulate filter (DPF) is installed at the exhaust end of the engine to filter out particles emitted by the engine, and the particulate filter
  • the control software is installed in the electronic control module of the engine controller.
  • the inside of the particulate filter is provided with a sensor, an inlet temperature sensor arranged before the oxidation catalytic converter (DOC), an outlet temperature sensor after the oxidation catalytic converter (DOC), and a pressure sensor before and after the DPF filter.
  • the DPF temperature and pressure status information feedback is transmitted to the engine controller, and the engine controller detects the particulate filter inlet and outlet temperature and pressure difference to determine the working state of the particulate filter, and simultaneously detects the particulate filter control switch, and the engine controller will The particulate filter and control switch information is transmitted to the main controller via the CAN bus.
  • the main controller adjusts the construction machinery according to the state of the particulate filter. When the engine is under light load or idle state, its exhaust temperature is lower than the regeneration temperature, the loading pump is installed at the PTO port of the engine, and the electromagnetic proportional relief valve is added to the output port of the loading pump to form an independent hydraulic load loading system.
  • the main controller adjusts the overflow pressure of the electromagnetic proportional relief valve to control the load, thereby improving the engine exhaust temperature and realizing regeneration.
  • the load needs to be small, and in the idle state, the load needs to be large.
  • the specific loading load is determined according to the on-site commissioning of the construction machinery.
  • the present invention has the following advantages over the prior art:
  • the invention connects the electromagnetic proportional relief valve to the loading pump output port by loading the pump in the PTO connection of the engine, and adjusting the overflow pressure of the electromagnetic proportional relief valve through the main controller when the engineering machine is in an idle or light load state. , increase the engine load, thereby increasing the engine exhaust temperature to achieve regeneration, so that the construction machinery does not need to stop the operation when regenerating, improving the working efficiency;
  • the present invention is independent of the loading load on the PTO port of the engine, and the loading load system and the engineering machinery hydraulic load system are independent of each other, and do not affect each other, and there is no need to make large-scale changes to the existing hydraulic system;
  • the invention has simple structure, convenient operation, and is easy to implement, and is suitable for popularization and use.
  • DRAWINGS 1 is a schematic structural diagram of a DPF according to Embodiment 1 of the present invention.
  • Embodiment 1 of the present invention is a schematic block diagram of Embodiment 1 of the present invention.
  • FIG. 3 is a schematic structural view of a hydraulic system according to Embodiment 1 of the present invention.
  • Embodiment 1 of the present invention is a schematic flow chart of Embodiment 1 of the present invention.
  • FIG. 5 is a schematic structural diagram of a regeneration control apparatus according to Embodiment 1 of the present invention.
  • Embodiment 1 Referring to Figures 1 to 5, an engineering machinery post-processing regeneration control method, when the construction machine is in a light load or idle state, the exhaust temperature of the engine is lower than the automatic regeneration temperature, and the engine controller The main controller sends a signal to increase the relief pressure of the electromagnetic proportional relief valve, increase the engine PTO port load, increase the engine exhaust temperature, and achieve regeneration.
  • An engineering machinery post-processing regeneration control device includes a loading pump and an electromagnetic proportional relief valve connected to the loading pump output port, the input port of the loading pump is connected with the PTO of the engineering machinery engine, and the electromagnetic ratio The control end of the relief valve is connected to the engineering machinery main controller, and the oil return ports of the loading pump and the electromagnetic proportional relief valve are respectively connected to the oil tank.
  • the NO in the exhaust gas is oxidized to N02 by using a catalyst in an oxidation catalytic converter (DOC), and then N02 is used in the DPF to capture oxygen.
  • PM refers to the particle, Particulate Matter
  • the temperature before the DOC must reach 250 °C or higher
  • the temperature in the T1 is detected by the engine controller
  • the temperature before the DPF must be reached. Above 500 °C, it can be fully regenerated.
  • the temperature in T2 is detected by the engine controller.
  • the differential pressure sensor P1 is installed at the front and rear of the DPF.
  • the engine controller determines the degree of clogging of the DPF by detecting the value of PI, and issues the regeneration request.
  • the engine controller detects the temperature and pressure signals in the DPF device.
  • the T1 temperature is lower than 250 ° C, and the catalyst in the DOC cannot react normally, which cannot be realized.
  • the regeneration of the DPF requires an additional load.
  • the engine controller sends a "regeneration auxiliary signal" to the main controller, asking the main controller to increase the load, and simultaneously sending a regeneration icon to the display for display, and the driver to the DPF regeneration switch. Take the appropriate action.
  • the main controller After receiving the signal, the main controller outputs a PWM (Pulse-Width Modulation) signal to adjust the relief pressure of the electromagnetic proportional relief valve to a target value, so that the engine PTO port increases the required load and increases the exhaust.
  • PWM Pulse-Width Modulation
  • the engine controller sends an end signal to the main controller, the main control The relief pressure of the relief valve is reduced to zero and the load is stopped.
  • the hydraulic main circuit device of the construction machine includes: a variable capacity hydraulic pressure driven by the engine 1.
  • the main pump 2 and the pilot pump 3 of a constant capacity, the pilot pump 3 is connected with the safety valve 7, and the 8, 9, 10 remote control valve controls the opening of the flow control valve according to the displacement of the handle, and the hydraulic main pump 2
  • the discharged pressure oil drives a plurality of actuators such as the hydraulic motor 13, the hydraulic cylinders 16, 17 to operate.
  • the loading load circuit is composed of the engine 1, the main pump PTO port 4, the loading pump 5 is installed on the PTO port 4 of the engine, and the electromagnetic proportional relief valve 6 is installed on the pipeline of the loading pump 5, when the main controller receives the "loading signal" After that, the PWM signal is output, and the relief pressure of the electromagnetic proportional relief valve 6 is adjusted to achieve hydraulic loading.
  • the main controller detects whether the loading signal is, if any, adjusts the overflow pressure of the PTO loading pump to a target value, and increases the required hydraulic load; if not, adjusts the PTO loading.
  • the pump has an overflow pressure of 0 and does not load.
  • the main controller detects the engine output power. If the engine output power is less than 70% of the total power, continue to detect the load signal. If not, disconnect the PTO.
  • the port electromagnetic proportional relief valve, end loading, if any, continue to load; if the engine output power is higher than 70%, directly load the electromagnetic proportional relief valve current to end loading.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Description

一种工程机械后处理再生控制方法及装置 技术领域
[0001] 本发明涉及一种动力控制方法， 具体涉及一种工程机械后处理再生控制方法及装 置。
5 背景技术
[0002] 目前， 在建筑、 水利等工程领域， 各类施工机械开始被广泛的使用， 诸如挖掘机、 起重机、 推土机等等， 这类用于工程建设的施工机械统称为工程机械。 工程机械主要由行走 装置、 回转装置、 驾驶室、 工作装置及动力装置组成， 其动力装置普遍是采用柴油发动机 机， 柴油发动机是采用柴油作为燃料的内燃机， 通过燃烧燃油后推动气缸内活塞作往返运动 0 来将燃油中的化学能量转换成为驱动车辆动作的机械能量， 其具有热效率高， 功率比较大并 且节省柴油的优点， 因而被广泛的应用在工程机械的动力装置中。
[0003] 工程机械在实际的使用中， 其柴油发动机不可避免的会排放出大量的尾气， 尾气中 含有微粒物质 （PM) 对环境的污染较大， 随着人们对环境保护意识的逐渐增加， 控制挖掘 机柴油发动机尾气中微粒物质的排放是一个需要克服的重要问题， 所以通过尾气后处理方式 5 消减柴油发动机微粒物质排放是必不可少的。 通过在发动机的排气端设置微粒过滤器 (DPF) 是控制柴油发动机尾气微粒物质较为有效的手段之一， 微粒过滤器主要是先对柴油 发动机排放的尾气中携带的微粒实行物理捕集， 一段时间后再实行再生处理， 将捕集到的微 粒物质进行清理， 以减小其对柴油发动机性能的影响。
[0004] 采用 DPF虽然能有效的对尾气中的微粒进行控制， 但也存在一定的不足， 就是在工
：° 程机械怠速和低负荷工作时， 载荷不是很大， 发动机尾气温度低， DPF不能自我清理再生， 需要强制进行清理， 这样就需要额外增加负荷， 目前增加负荷是通过在液压系统回路中增加 电磁切换阀或节流阀来实现， 同时工程机械必须停止作业， 因为再生负荷与正常工作液压负 荷相互干扰， 影响机械的正常作业， 同时增加上述阀门后， 会提高整个液压系统的能耗。 还 有一种方式是从主泵 PTO 口外接一个齿轮泵， 再连接一个比例溢流阀， 构成独立的液压辅
:5 助加载系统， 但该方式也存在弊端， 当机器在轻负荷再生过程中， 驾驶员又进行重负荷作 业， 这是主泵的吸收功率会大于发动机的输出功率， 会引起主泵与发动机联接的联轴器磨 损， 降低其使用寿命。
发明内容
[0005] 本发明目的是提供一种工程机械后处理再生控制方法及装置， 使用该方法， 使得加 载负荷与液压系统相互独立， 进行再生无须工程机械停止作业， 提高了工作效率。
[0006] 为达到上述目的， 本发明采用的技术方案是： 一种工程机械后处理再生控制方法， 当工程机械处于轻负荷或怠速状态时， 此时发动机的排气温度低于自动再生温度， 发动机控 制器向主控制器发送信号， 提高电磁比例溢流阀的溢流压力， 增加发动机 PTO 口负荷， 提 高发动机的排气温度， 实现再生。
[0007] 一种工程机械后处理再生控制装置， 包括一加载泵及与加载泵输出口连接的电磁比 例溢流阀， 所述加载泵的输入口与工程机械发动机的 PTO连接， 所述电磁比例溢流阀的控 制端与工程机械主控制器连接， 所述加载泵及电磁比例溢流阀的回油口分别与油箱连接。
[0008] 上述技术方案中， 所述工程机械为目前普遍使用的， 均采用柴油发动机， 微粒过滤 器 （DPF) 安装在发动机的排气端， 用于过滤掉发动机排放出的微粒， 微粒过滤器的控制软 件安装于发动机控制器的电控模块中。 在微粒过滤器的内部设置有传感器， 设置在氧化催化 型转化器 （DOC ) 前的入口温度传感器， 氧化催化型转化器 （DOC ) 后的出口温度传感 器， DPF滤芯前后的压力传感器， 这些传感器将 DPF 的温度、 压力状态信息反馈传送到发 动机控制器， 发动机控制器检测微粒过滤器进、 出口温度及压力差， 来判断微粒过滤器的工 作状态， 同时检测微粒过滤器控制开关， 发动机控制器将微粒过滤器及控制开关信息通过 CAN 总线传送到主控制器， 主控制器根据微粒过滤器状态需要对工程机械进行相应调节。 当发动机处于轻负荷或怠速状态下时， 其排气温度低于再生温度， 在发动机的 PTO 口安装 加载泵， 在加载泵的输出口上增加电磁比例溢流阀， 形成独立的液压负荷加载系统， 通过主 控制器调节电磁比例溢流阀的溢流压力来控制负荷大小， 从而提高发动机排气温度， 实现再 生， 轻负荷状态下， 需要加载负荷较小， 怠速状态下， 需要加载负荷较大， 具体加载负荷根 据工程机械现场调试来确定。
[0009] 由于上述技术方案运用， 本发明与现有技术相比具有下列优点：
1. 本发明通过在发动机的 PTO连接加载泵， 与加载泵输出口连接电磁比例溢流阀， 当工程 机械处于怠速或轻负荷状态时， 通过主控制器调节电磁比例溢流阀的溢流压力， 增加发动机 负荷， 从而提高发动机排气温度实现再生， 使得工程机械进行再生时无须停止作业， 提高了 工作效率；
2. 本发明通过在发动机的 PTO 口外接加载负荷， 加载负荷体统与工程机械液压负荷系统相 互独立， 相互之间不会影响， 同时无须对现有液压系统进行大规模改变；
3. 本发明结构简单， 操作方便， 且易于实现， 适合推广使用。
附图说明 [0010] 图 1为本发明实施例一中 DPF结构示意图；
图 2为本发明实施例一的原理框图；
图 3为本发明实施例一中液压系统的结构示意图；
图 4为本发明实施例一的流程示意图；
图 5为本发明实施例一中再生控制装置结构示意图。
[0011] 其中： 1、 发动机； 2、 液压主泵； 3、 先导泵； 4、 主泵 PTO 口； 5、 加载泵； 6、 电 磁比例溢流阀； 7、 安全阀； 8、 9、 10、 遥控阀； 12、 14、 15、 流量控制阀； 13、 液压马 达； 16、 17、 液压油缸。
具体实施方式
[0012] 下面结合附图及实施例对本发明作进一步描述：
实施例一： 参见图 1至 5所示， 一种工程机械后处理再生控制方法， 当工程机械处于轻负荷 或怠速状态时， 此时发动机的排气温度低于自动再生温度， 发动机控制器向主控制器发送信 号， 提高电磁比例溢流阀的溢流压力， 增加发动机 PTO 口负荷， 提高发动机的排气温度， 实现再生。
[0013] 一种工程机械后处理再生控制装置， 包括一加载泵及与加载泵输出口连接的电磁比 例溢流阀， 所述加载泵的输入口与工程机械发动机的 PTO连接， 所述电磁比例溢流阀的控 制端与工程机械主控制器连接， 所述加载泵及电磁比例溢流阀的回油口分别与油箱连接。
[0014] 参见图 1 所示， 当发动机尾气从 DPF 的进口进入后， 先利用氧化催化型转化器 (DOC) 中的催化剂将排气中的 NO氧化为 N02， 然后在 DPF中利用 N02氧化捕集到的 PM (PM是指颗粒， Particulate Matter), 要使上述过程正常进行， 在 DOC前的温度必须达 到 250°C以上， 通过发动机控制器来检测 T1 中的温度， DPF前的温度必须达到 500°C以 上， 才能完全再生， 通过发动机控制器来检测 T2中的温度， DPF前后端的装有差压传感器 Pl， 发动机控制器通过检测 PI的值来判断 DPF的堵塞程度， 发出再生要求。
[0015] 参见图 2所示， 发动机控制器检测 DPF装置中的温度压力信号， 当机器在轻负荷作 业或怠速状态时， T1温度低于 250°C， DOC中的催化剂不能正常反应， 不能实现 DPF的再 生， 因此需要额外增加负荷， 这时发动机控制器发送 "再生辅助信号"给主控制器， 要求主 控制器增加负荷， 同时向显示器发送再生图标进行显示， 并使驾驶员对 DPF再生开关进行 相应操作。 主控制器收到此信号后， 输出 PWM (脉宽调制 Pulse- Width Modulation) 信号， 调节电磁比例溢流阀的溢流压力到一目标值， 使发动机 PTO 口增加所需要的负荷， 提高排 气温度， 实现 DPF再生， 当再生结束后， 发动机控制器发送结束信号给主控制器， 主控制 器将溢流阀的溢流压力降为 0， 停止加载。
[0016] 如图 3 所示， 表示搭载在本实施方式的工程机械上的液压主回路系统和液压辅助加 载回路系统， 工程机械的液压主回路装置包括： 由发动机 1驱动的可变容量的液压主泵 2和 定容量的先导泵 3， 先导泵 3与安全阀 7连接， 8、 9、 10遥控阀根据手柄位移大小来控制 12、 14、 15 流量控制阀的开度， 而液压主泵 2 排出的压力油驱动液压马达 13、 液压油缸 16、 17等多个执行元件进行工作。 加载负荷回路由发动机 1、 主泵 PTO 口 4组成， 在发动 机的 PTO口 4上安装加载泵 5， 在加载泵 5的管路上安装电磁比例溢流阀 6, 当主控制器接 受到 "加载信号"后， 输出 PWM信号， 调节电磁比例溢流阀阀 6的溢流压力来实现液压加 载。
[0017] 具体加载流程参见图 4， 主控制器检测加载信号有否， 如有， 则调节 PTO加载泵的 溢流压力到一目标值， 增加所需要的液压负荷； 如没有， 则调节 PTO加载泵的溢流压力为 0， 不进行加载。 为了使发动机在轻负荷作业模式进入重负荷作业模式避免动力不足， 主控 制器检测此时发动机输出功率， 如果发动机输出功率小于总功率的 70%， 再继续检测加载信 号， 如没有则断开 PTO 口电磁比例溢流阀， 结束加载， 如有则继续加载； 如果发动机输出 功率高于 70%， 则直接断开加载电磁比例溢流阀电流结束加载。

Claims

权利要求书
1. 一种工程机械后处理再生控制方法， 其特征在于： 当工程机械处于轻负荷或怠速状态 时， 此时发动机的排气温度低于自动再生温度， 发动机控制器向主控制器发送信号， 提高电 磁比例溢流阀的溢流压力， 增加发动机 PTO口负荷， 提高发动机的排气温度， 实现再生。
2. 一种工程机械后处理再生控制装置， 其特征在于： 包括一加载泵 (5)及与加载泵输出口 连接的电磁比例溢流阀 (6)，所述加载泵的输入口与工程机械发动机的 PTO连接，所述电磁比 例溢流阀的控制端与工程机械主控制器连接， 所述加载泵及电磁比例溢流阀的回油口分别与 油箱连接。
PCT/CN2011/076252 2011-03-17 2011-06-24 一种工程机械后处理再生控制方法及装置 Ceased WO2012122756A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2011100648862A CN102146832A (zh) 2011-03-17 2011-03-17 一种工程机械后处理再生控制方法及装置
CN201110064886.2 2011-03-17

Publications (1)

Publication Number Publication Date
WO2012122756A1 true WO2012122756A1 (zh) 2012-09-20

Family

ID=44421273

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/076252 Ceased WO2012122756A1 (zh) 2011-03-17 2011-06-24 一种工程机械后处理再生控制方法及装置

Country Status (2)

Country Link
CN (1) CN102146832A (zh)
WO (1) WO2012122756A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9186664B2 (en) 2011-11-08 2015-11-17 Shanghai Huaxing Digital Technology Co., Ltd. Intelligent post-treatment and regeneration control method for engineering machinery engine
US20220145589A1 (en) * 2020-11-09 2022-05-12 Caterpillar Inc. Hydraulic system and methods for an earthmoving machine

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102444449A (zh) * 2011-11-02 2012-05-09 上海三一重机有限公司 一种工程机械发动机微粒再生的负荷加载与能量回收系统
CN104033214A (zh) * 2013-03-07 2014-09-10 斗山工程机械（中国）有限公司 工程机械及其dpf再生系统
KR102130188B1 (ko) * 2016-12-28 2020-08-05 주식회사 두산 엔진식 지게차의 운전 중 dpf 재생 시스템 및 그 방법
CN110725730B (zh) * 2019-09-30 2023-08-18 江苏大学 一种基于双燃料技术的dpf再生控制系统及方法
CN113153494B (zh) * 2021-05-14 2023-05-26 中南林业科技大学 灰分自清洁壁流式球型微粒捕集器
CN113700539A (zh) * 2021-08-20 2021-11-26 上海柴油机股份有限公司 汽车吊发动机在pto模式下的dpf自动再生控制方法
CN114294077A (zh) * 2021-12-22 2022-04-08 徐州徐工挖掘机械有限公司 工程车辆和发动机后处理系统的过滤器再生方法
CN114458463A (zh) * 2022-01-29 2022-05-10 徐州徐工挖掘机械有限公司 一种工程机械排放的热管理系统、方法及工程机械

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005337062A (ja) * 2004-05-25 2005-12-08 Toyota Industries Corp 排ガス浄化フィルタ再生装置
EP2022954A1 (en) * 2006-06-01 2009-02-11 Hitachi Construction Machinery Co., Ltd. Exhaust gas purifier of construction machine
CN101636562A (zh) * 2007-09-25 2010-01-27 日立建机株式会社 工程机械的废气净化系统
JP2010053723A (ja) * 2008-08-26 2010-03-11 Yanmar Co Ltd 排気浄化装置
CN101748766A (zh) * 2009-12-17 2010-06-23 三一重机有限公司 一种挖掘机执行机构的压力控制方法及其控制回路
CN101922341A (zh) * 2010-06-30 2010-12-22 三一重机有限公司 一种用于挖掘机的尾气监控处理方法及装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101526023A (zh) * 2008-03-05 2009-09-09 通用汽车环球科技运作公司 柴油机微粒过滤器扩展怠速再生
JP2009264315A (ja) * 2008-04-28 2009-11-12 Yanmar Co Ltd 排気ガス浄化装置
JP5037570B2 (ja) * 2009-07-02 2012-09-26 日立建機株式会社 作業機械

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005337062A (ja) * 2004-05-25 2005-12-08 Toyota Industries Corp 排ガス浄化フィルタ再生装置
EP2022954A1 (en) * 2006-06-01 2009-02-11 Hitachi Construction Machinery Co., Ltd. Exhaust gas purifier of construction machine
CN101636562A (zh) * 2007-09-25 2010-01-27 日立建机株式会社 工程机械的废气净化系统
JP2010053723A (ja) * 2008-08-26 2010-03-11 Yanmar Co Ltd 排気浄化装置
CN101748766A (zh) * 2009-12-17 2010-06-23 三一重机有限公司 一种挖掘机执行机构的压力控制方法及其控制回路
CN101922341A (zh) * 2010-06-30 2010-12-22 三一重机有限公司 一种用于挖掘机的尾气监控处理方法及装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9186664B2 (en) 2011-11-08 2015-11-17 Shanghai Huaxing Digital Technology Co., Ltd. Intelligent post-treatment and regeneration control method for engineering machinery engine
US20220145589A1 (en) * 2020-11-09 2022-05-12 Caterpillar Inc. Hydraulic system and methods for an earthmoving machine
US11649609B2 (en) * 2020-11-09 2023-05-16 Caterpillar Inc. Hydraulic system and methods for an earthmoving machine

Also Published As

Publication number Publication date
CN102146832A (zh) 2011-08-10

Similar Documents

Publication Publication Date Title
CN102146832A (zh) 一种工程机械后处理再生控制方法及装置
US8161736B2 (en) Exhaust gas cleaning system for engineering vehicle
EP2284368B1 (en) Exhaust gas purifier
CN101922341B (zh) 一种用于挖掘机的尾气监控处理方法及装置
US20120047883A1 (en) Exhaust gas cleaning system for engineering vehicle
CN101636562A (zh) 工程机械的废气净化系统
CN103597178A (zh) 工程机械
US8961668B2 (en) Exhaust gas purification system
JP2011127534A (ja) ハイブリッド式エンジン装置
KR20130067270A (ko) 작업기의 배기가스 정화 시스템
JP5471834B2 (ja) 排気ガス浄化システム
CN114370082B (zh) 一种电动装载机的自动怠速控制系统及方法
CN202768118U (zh) 一种基于气动隔膜泵的scr空气辅助式喷射系统
WO2013067802A1 (zh) 一种工程机械用发动机后处理再生的智能控制方法
CN116677483A (zh) 积碳清除控制系统、积碳清除控制方法及其控制装置
CN102031800B (zh) 一种挖掘机的混合动力再生控制方法及装置
JP6158127B2 (ja) ハイブリッド式エンジン装置
JP2008223612A (ja) 排気浄化装置
JP6147214B2 (ja) ハイブリッド式エンジン装置
JP6158126B2 (ja) ハイブリッド式駆動装置
CN102116185A (zh) 一种工程机械再生控制方法
CN104044468B (zh) 柴油驱动车辆制动能量的回收利用系统及其控制方法
US9850793B2 (en) Automatic regeneration control device for particulate filter
JP6207937B2 (ja) ショベル及びショベルの管理装置
JP2009191654A (ja) パティキュレートフィルタの再生方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11860955

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11860955

Country of ref document: EP

Kind code of ref document: A1