WO2018177370A1 - 变速器液压系统、控制方法及车辆 - Google Patents

变速器液压系统、控制方法及车辆 Download PDF

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WO2018177370A1
WO2018177370A1 PCT/CN2018/081083 CN2018081083W WO2018177370A1 WO 2018177370 A1 WO2018177370 A1 WO 2018177370A1 CN 2018081083 W CN2018081083 W CN 2018081083W WO 2018177370 A1 WO2018177370 A1 WO 2018177370A1
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Prior art keywords
flow
demand
hydraulic system
flow rate
lubrication
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PCT/CN2018/081083
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English (en)
French (fr)
Inventor
王建华
曹永宏
刘化雪
王超
赵运珠
戴良顺
刘婧
张立浦
曲海军
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长城汽车股份有限公司
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Publication of WO2018177370A1 publication Critical patent/WO2018177370A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021Generation or control of line pressure
    • F16H61/0025Supply of control fluid; Pumps therefore
    • F16H61/0028Supply of control fluid; Pumps therefore using a single pump driven by different power sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/02Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
    • F16H61/0262Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic
    • F16H61/0265Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being hydraulic for gearshift control, e.g. control functions for performing shifting or generation of shift signals
    • F16H61/0267Layout of hydraulic control circuits, e.g. arrangement of valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H61/00Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021Generation or control of line pressure
    • F16H2061/0037Generation or control of line pressure characterised by controlled fluid supply to lubrication circuits of the gearing

Definitions

  • the invention relates to the technical field of automobiles, and in particular to a transmission hydraulic system, a control method and a vehicle.
  • the present invention aims to propose a control method for a transmission hydraulic system, which has the advantages of low energy consumption and high fuel economy, and is safe and reliable, and improves ride comfort of the vehicle.
  • a control method for a transmission hydraulic system comprising: obtaining a total pressure to flow demand in a hydraulic system and a total cooling lubrication demand for a flow; determining the total pressure Whether the demand for flow is greater than zero; if so, controlling the electronic pump to supply oil to the pressure circuit; otherwise, controlling the electronic pump to supply oil to the lubrication circuit; when the electronic pump supplies oil to the lubrication circuit, according to the clutch
  • the need for cooling lubrication determines the flow and corrects the flow based on the correction factor.
  • the determining the flow rate according to the requirement of the clutch cooling lubrication, and correcting the flow rate according to the correction coefficient comprises: determining the flow rate according to the requirement of the clutch cooling lubrication; according to the main oil pressure and the rotation speed of the cooling system And the temperature obtains the correction coefficient; the flow rate is corrected according to the correction coefficient.
  • the control method of the transmission hydraulic system of the invention provides hydraulic oil to the hydraulic system in real time and effectively through the reasonable on-demand control of the flow rate, thereby improving the efficiency of the mechanical pump, reducing energy waste, providing greater pressure and more for the hydraulic system.
  • the flow ensures the safe and reliable operation of the transmission hydraulic system.
  • a second object of the present invention is to provide a control method for a transmission hydraulic system which has the advantages of low energy consumption and high fuel economy, and is safe and reliable, and improves ride comfort of the vehicle.
  • a control method for a transmission hydraulic system wherein the transmission hydraulic system is cooperatively driven by an electronic pump and a mechanical pump, the method comprising: obtaining a total pressure to flow demand in the hydraulic system and a total cooling lubrication demand for the flow; Whether the demand of the total flow is greater than the rated flow of the mechanical pump; if so, whether the demand of the total pressure for the flow is greater than the rated flow of the mechanical pump; if so, controlling the electronic pump to supply the pressure circuit Otherwise, the electronic pump is controlled to supply oil to the lubrication circuit; when the electronic pump supplies oil to the lubrication circuit, the flow rate is determined according to the requirement of the clutch cooling lubrication, and the flow rate is corrected according to the correction coefficient.
  • the determining the flow rate according to the requirement of the clutch cooling lubrication, and correcting the flow rate according to the correction coefficient comprises: determining the flow rate according to the requirement of the clutch cooling lubrication; according to the main oil pressure and the rotation speed of the cooling system And the temperature obtains the correction coefficient; the flow rate is corrected according to the correction coefficient.
  • the total flow demand is the sum of the total pressure versus flow demand and the total cooling lubrication demand for flow.
  • the electronic pump can assist the mechanical pump to work efficiently in the automatic transmission with the mechanical pump, reduce the displacement of the mechanical pump, and supply the hydraulic pump to the hydraulic system as needed to improve the fuel economy of the whole tank.
  • the electronic pump assists or independently provides the hydraulic system pressure and flow in the conventional power transmission.
  • the hybrid system can also meet the pressure and flow requirements of the hydraulic system.
  • the electronic pump output flow is turned on as needed, and according to the actual situation.
  • the demand provides pressure and the switching of the cooling and lubrication flow, so that the electronic pump can reach the optimal working state and exert the maximum capacity of the electronic pump to ensure the safe and reliable operation of the transmission hydraulic system.
  • a third object of the present invention is to provide a transmission hydraulic system which has the advantages of low energy consumption and high fuel economy, and is safe and reliable, and improves ride comfort of the vehicle.
  • a transmission hydraulic system the transmission hydraulic system being driven by an electronic pump, the hydraulic system comprising: a first acquisition module for acquiring a total pressure to flow demand in the hydraulic system and a total cooling lubrication requirement for flow; a first judging module, configured to determine whether the demand of the total pressure on the flow is greater than zero; the first control module is configured to control the electronic pump to supply oil to the pressure circuit when the total pressure versus flow demand is greater than zero, Otherwise, the electronic pump is controlled to supply oil to the lubrication circuit, and when the electronic pump supplies oil to the lubrication circuit, the flow rate is determined according to the need for clutch cooling lubrication, and the flow rate is corrected according to a correction factor.
  • the first control module is configured to: determine a flow rate according to a requirement of the clutch cooling lubrication; obtain the correction coefficient according to a main oil pressure, a rotation speed, and a temperature of the cooling system; The flow rate is corrected.
  • the transmission hydraulic system has the same advantages as the control method of the transmission hydraulic system of the first aspect described above with respect to the prior art, and details are not described herein again.
  • a fourth object of the present invention is to provide a transmission hydraulic system which has the advantages of low energy consumption and high fuel economy, and is safe and reliable, and improves ride comfort of the vehicle.
  • a transmission hydraulic system is cooperatively driven by an electronic pump and a mechanical pump, the hydraulic system comprising: a second acquisition module for obtaining a total pressure versus flow demand in the hydraulic system and a total cooling lubrication pair
  • the second determination module is configured to determine whether the demand of the total flow is greater than the rated flow of the mechanical pump; and the second control module is configured to further determine when the demand of the total flow is greater than the rated flow of the mechanical pump Whether the demand of the total pressure on the flow rate is greater than the rated flow rate of the mechanical pump, and controlling the electronic pump to supply oil to the pressure circuit when the demand of the total pressure versus the flow rate is greater than the rated flow rate of the mechanical pump; otherwise, the control station
  • the electronic pump supplies oil to the lubrication circuit, and when the electronic pump supplies oil to the lubrication circuit, the flow rate is determined according to the requirements of the clutch cooling lubrication, and the flow rate is corrected according to the correction coefficient.
  • the second control module is configured to: determine a flow rate according to a requirement of the clutch cooling lubrication; obtain the correction coefficient according to a main oil pressure, a rotation speed, and a temperature of the cooling system; The flow is corrected.
  • a fifth object of the present invention is to provide a vehicle which has the advantages of low energy consumption and high fuel economy, and is safe and reliable, and improves ride comfort.
  • a vehicle provided with a transmission hydraulic system as described in any of the above embodiments.
  • the described vehicle has the same advantages as the above-described transmission hydraulic system with respect to the prior art, and details are not described herein again.
  • FIG. 1 is a flow chart of a method of controlling a transmission hydraulic system according to an embodiment of the present invention
  • FIG. 2 is a detailed flowchart of a control method of a transmission hydraulic system according to an embodiment of an aspect of the present invention
  • FIG. 3 is a flow chart of a control method of a transmission hydraulic system according to an embodiment of another aspect of the present invention.
  • FIG. 4 is a detailed flowchart of a control method of a transmission hydraulic system according to an embodiment of another aspect of the present invention.
  • Figure 5 is a block diagram showing the structure of a transmission hydraulic system according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a transmission hydraulic system according to another embodiment of the present invention.
  • FIG. 1 is a flow chart of a method of controlling a transmission hydraulic system in accordance with one embodiment of the present invention.
  • a control method of a transmission hydraulic system according to an embodiment of the present invention, wherein the transmission hydraulic system is driven by an electronic pump, and the transmission is an automatic transmission. Therefore, the transmission hydraulic system is an automatic transmission hydraulic system, also referred to as an automatic transmission hydraulic control system. Control methods include:
  • S102 Determine whether the total pressure demand for the flow is greater than zero.
  • the clutch pressure versus flow demand, the shift pressure demand for flow, and the other pressure versus flow demand in the automatic transmission hydraulic control system are the total pressure versus flow requirements in the hydraulic system;
  • the demand for clutch cooling lubrication flow, the demand for gear, shaft and bearing lubrication flow, and the demand for other lubrication cooling flow are the total cooling lubrication flow requirements in the hydraulic system.
  • the total transmission pressure of the automatic transmission hydraulic system under certain working conditions.
  • the sum of the demand and the total cooling lubrication demand for the flow is the total flow demand in the current state. If the total flow demand is greater than 0 in the current state, the control electronic pump starts to work.
  • a switching valve is used in the hydraulic system to control whether the output flow of the electronic pump flows into the pressure oil circuit or into the cooling oil circuit (ie, the lubrication circuit).
  • the switching valve controls the electronic pump to provide flow to the hydraulic system, otherwise the switching valve controls the electronic pump to provide pressure oil to the hydraulic system.
  • the control method of the transmission hydraulic system provides hydraulic oil to the hydraulic system in real time and effectively through the reasonable on-demand control of the flow rate, thereby improving the efficiency of the mechanical pump, reducing energy waste, and providing greater pressure to the hydraulic system. And more flow, ensuring safe and reliable operation of the transmission hydraulic system.
  • determining the flow rate according to the requirement of the clutch cooling lubrication, and correcting the flow rate according to the correction coefficient includes: determining the flow rate according to the requirement of the clutch cooling lubrication; obtaining a correction coefficient according to the main oil pressure, the rotation speed and the temperature of the cooling system; The coefficient corrects the flow.
  • the cooling lubrication of the clutch in the dual clutch automatic transmission is critical.
  • the amount of lubricating oil has a great relationship with the cooling and lubricating effect of the clutch, the service life of the clutch, and the driving comfort.
  • the control of the flow may be accomplished by a clutch cooling lubrication control valve (ie, an electronic valve).
  • the flow demand of the clutch is calculated according to the transmission oil temperature and the clutch slip motor power. After the demand is obtained, the current value of the electronic valve and the corresponding actual flow rate can be controlled by looking up the table according to the demand, and then the theoretical flow rate is compared. The actual flow rate is adjusted by a correction factor (such as main oil pressure offset, speed offset, temperature offset, etc.) to meet the demand for clutch cooling lubrication flow.
  • a correction factor such as main oil pressure offset, speed offset, temperature offset, etc.
  • the main oil pressure offset means that under some operating conditions, the clutch lubrication flow demand may not be met by looking up the table, and the main oil pressure needs to be increased accordingly to increase the clutch lubrication flow to meet the demand and improve safety;
  • Offset refers to biasing different lubrication solenoid currents at different speeds to meet the flow demand at different speeds, and avoiding excessive oil to improve efficiency;
  • temperature offset means that lubrication flow may be required at low temperatures. It is necessary to bias the lubrication solenoid current (down) to meet the cooling and lubrication requirements.
  • the control method of the transmission hydraulic system according to the embodiment of the invention can accurately control the clutch cooling and lubricating flow, thereby effectively satisfying the clutch cooling and lubrication flow demand, ensuring the safety and reliability of the clutch, thereby effectively improving the driving comfort of the vehicle. Sex.
  • an embodiment of the present invention discloses a control method for a transmission hydraulic system.
  • the transmission hydraulic system is driven by an electronic pump and a mechanical pump to supply oil.
  • the control method includes:
  • S301 Acquire the total pressure to flow demand in the hydraulic system and the total cooling lubrication demand for the flow. It should be noted that the total flow demand is the sum of the total pressure versus flow demand and the total cooling lubrication demand for the flow.
  • S302 Determine whether the demand of the total flow is greater than the rated flow of the mechanical pump.
  • a switching valve in the hydraulic system controls whether the output flow of the electronic pump enters the pressure oil path or enters the cooling oil circuit. That is, if the total pressure versus flow demand is greater than the rated flow of the mechanical pump, the control electronic pump supplies oil to the pressure circuit, otherwise, the control electronic pump supplies oil to the lubrication circuit.
  • the electronic pump can assist the mechanical pump to work efficiently in the automatic transmission with the mechanical pump, reduce the displacement of the mechanical pump, and supply the hydraulic pump to the hydraulic system as needed, thereby improving the whole
  • the electronic pump assists or independently provides the hydraulic system pressure and flow in the conventional power transmission.
  • the pressure and flow demand of the hydraulic system can also be taken into account in the hybrid system, and the output flow of the electronic pump is turned on as needed.
  • the pressure and the cooling and lubricating flow are switched, so that the electronic pump reaches the optimal working state, and the maximum capacity of the electronic pump is exerted to ensure the safe and reliable operation of the transmission hydraulic system.
  • determining the flow rate according to the demand of the clutch cooling lubrication, and correcting the flow rate according to the correction coefficient comprises: determining the flow rate according to the requirement of the clutch cooling lubrication; according to the main oil pressure, the rotational speed and the temperature of the cooling system Obtaining the correction coefficient; correcting the flow rate according to the correction coefficient.
  • the cooling lubrication of the clutch in the dual clutch automatic transmission is critical.
  • the amount of lubricating oil has a great relationship with the cooling and lubricating effect of the clutch, the service life of the clutch, and the driving comfort.
  • the control of the flow may be accomplished by a clutch cooling lubrication control valve (ie, an electronic valve).
  • the flow demand of the clutch is calculated according to the transmission oil temperature and the clutch slip motor power. After the demand is obtained, the current value of the electronic valve and the corresponding actual flow rate can be controlled by looking up the table according to the demand, and then the theoretical flow rate is compared. The actual flow rate is adjusted by a correction factor (such as main oil pressure offset, speed offset, temperature offset, etc.) to meet the demand for clutch cooling lubrication flow.
  • a correction factor such as main oil pressure offset, speed offset, temperature offset, etc.
  • the main oil pressure offset means that under some operating conditions, the clutch lubrication flow demand may not be met by looking up the table, and the main oil pressure needs to be increased accordingly to increase the clutch lubrication flow to meet the demand and improve safety;
  • Offset refers to biasing different lubrication solenoid currents at different speeds to meet the flow demand at different speeds, and avoiding excessive oil to improve efficiency;
  • temperature offset means that lubrication flow may be required at low temperatures. It is necessary to bias the lubrication solenoid current (down) to meet the cooling and lubrication requirements.
  • the control method of the transmission hydraulic system according to the embodiment of the invention can accurately control the clutch cooling and lubricating flow, thereby effectively satisfying the clutch cooling and lubrication flow demand, ensuring the safety and reliability of the clutch, thereby effectively improving the driving comfort of the vehicle. Sex.
  • FIG. 5 is a block diagram showing the structure of a transmission hydraulic system in accordance with one embodiment of the present invention.
  • a transmission hydraulic system according to an embodiment of the present invention includes a first acquisition module 510, a first determination module 520, and a first control module 530.
  • the first obtaining module 510 is configured to acquire a total pressure to flow demand in the hydraulic system and a total cooling lubrication requirement for the flow; the first determining module 520 is configured to determine whether the total pressure to the flow demand is greater than zero;
  • the control module 530 is configured to control the electronic pump to supply oil to the pressure circuit when the total pressure versus flow demand is greater than zero, otherwise, the electronic pump is controlled to supply oil to the lubrication circuit, and when the electronic pump is a lubrication circuit
  • the flow rate is determined according to the requirements of clutch cooling lubrication, and the flow rate is corrected according to the correction coefficient.
  • the transmission hydraulic system according to the embodiment of the present invention effectively supplies hydraulic oil to the hydraulic system in real time through reasonable on-demand control of the flow rate, thereby improving the efficiency of the mechanical pump, reducing energy waste, providing greater pressure and more for the hydraulic system.
  • the flow ensures the safe and reliable operation of the transmission hydraulic system.
  • the first control module 530 is configured to: determine a flow rate according to the requirement of the clutch cooling lubrication; obtain the correction coefficient according to a main oil pressure, a rotation speed, and a temperature of the cooling system; and the flow rate according to the correction coefficient Make corrections.
  • the clutch cooling and lubricating flow can be accurately controlled, thereby effectively meeting the clutch cooling and lubrication flow demand, ensuring the safety and reliability of the clutch, and thereby effectively improving the driving comfort of the vehicle.
  • an embodiment of the present invention discloses a transmission hydraulic system including: a second acquisition module 610, a second determination module 620, and a second control module 630.
  • the second obtaining module 610 is configured to obtain a total pressure to flow demand in the hydraulic system and a total cooling lubrication demand for the flow; the second determining module 620 is configured to determine whether the total flow demand is greater than the mechanical pump rated flow; The control module 630 is configured to further determine whether the demand of the total pressure for the flow rate is greater than the rated flow rate of the mechanical pump when the demand of the total flow rate is greater than the rated flow rate of the mechanical pump, and the demand for the flow at the total pressure Controlling the electronic pump to supply oil to the pressure circuit when greater than the rated flow rate of the mechanical pump; otherwise, controlling the electronic pump to supply oil to the lubrication circuit, and when the electronic pump supplies oil to the lubrication circuit, cooling according to the clutch cooling
  • the demand determines the traffic and corrects the traffic based on the correction factor.
  • the electronic pump can assist the mechanical pump to work efficiently in the automatic transmission with the mechanical pump, so that the mechanical pump displacement is reduced, the electronic pump supplies oil to the hydraulic system as needed, and improves the fuel economy of the entire tank.
  • the electronic pump assists or independently provides the hydraulic system pressure and flow in the conventional power transmission.
  • the hybrid system can also meet the pressure and flow requirements of the hydraulic system.
  • the electronic pump output flow is turned on as needed, and according to the actual situation.
  • the demand provides pressure and the switching of the cooling and lubrication flow, so that the electronic pump reaches the optimal working state, and the maximum capacity of the electronic pump is exerted to ensure the safe and reliable operation of the transmission hydraulic system.
  • the second control module 630 is configured to: determine a flow rate according to the requirement of the clutch cooling lubrication; obtain the correction coefficient according to a main oil pressure, a rotation speed, and a temperature of the cooling system; and the flow rate according to the correction coefficient Make corrections.
  • the clutch cooling and lubricating flow can be accurately controlled, thereby effectively meeting the clutch cooling and lubrication flow demand, ensuring the safety and reliability of the clutch, and thereby effectively improving the driving comfort of the vehicle.
  • an embodiment of the present invention discloses a vehicle comprising: the transmission hydraulic system of any of the above embodiments.
  • the vehicle has the advantages of low energy consumption and high fuel economy, and is safe and reliable, improving ride comfort.

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  • General Engineering & Computer Science (AREA)
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  • General Details Of Gearings (AREA)

Abstract

一种变速器液压系统、控制方法及车辆。控制方法包括:获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求(S101);判断所述总压力对流量的需求是否大于零(S102);如果是,则控制所述电子泵为压力回路供油,否则,控制所述电子泵为润滑回路供油(S103);当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正(S104)。所述方法具有能耗低且燃油经济性高的优点,并且安全可靠,提升车辆的乘坐舒适性。

Description

变速器液压系统、控制方法及车辆
相关申请的交叉引用
本申请要求长城汽车股份有限公司于2017年3月29日提交的、发明名称为“变速器液压系统、控制方法及车辆”的、中国专利申请号“201710198265.0”的优先权。
技术领域
本发明涉及汽车技术领域,特别涉及一种变速器液压系统、控制方法及车辆。
背景技术
目前,自动变速器中有三种情况:(1)大多没有电子泵,只有机械泵。为了满足液压系统的压力和流量需求,设计的机械泵排量相对较大,能量浪费比较大,效率不高;(2)只有电子泵而没有机械泵。只能给液压系统提供小压力和小流量需求,有些极限工况导致压力达不到或流量不足。(3)自动变速器中大多通过变速器油温和滑摩功率实现简单控制,缺乏控制精度。
发明内容
有鉴于此,本发明旨在提出一种变速器液压系统的控制方法,该方法具有能耗低且燃油经济性高的优点,并且安全可靠,提升车辆的乘坐舒适性。
为达到上述目的,本发明的技术方案是这样实现的:
一种变速器液压系统的控制方法,所述变速器液压系统由电子泵驱动供油,所述方法包括:获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求;判断所述总压力对流量的需求是否大于零;如果是,则控制所述电子泵为压力回路供油,否则,控制所述电子泵为润滑回路供油;当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
进一步的,所述根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正的步骤包括:根据所述离合器冷却润滑的需求确定流量;根据所述冷却系统的主油压、转速和温度得到所述修正系数;根据所述修正系数对所述流量进行修正。
本发明的变速器液压系统的控制方法,通过流量的合理的按需控制,实时有效地为液压系统提供液压油,进而提高机械泵效率,减少能量浪费,为液压系统提供更大的压力和更多的流量,保证了变速器液压系统安全可靠地运行。
本发明的第二个目的在于提出一种变速器液压系统的控制方法,该方法具有能耗低且燃油经济性高的优点,并且安全可靠,提升车辆的乘坐舒适性。
为达到上述目的,本发明的技术方案是这样实现的:
一种变速器液压系统的控制方法,所述变速器液压系统由电子泵和机械泵协同驱动供油,所述方法包括:获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求;判断总流量的需求是否大于机械泵的额定流量;如果是,则进一步判断所述总压力对流量的需求是否大于所述机械泵的额定流量;如果是,则控制所述电子泵为压力回路供油,否则,控制所述电子泵为润滑回路供油;当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
进一步的,所述根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正的步骤包括:根据所述离合器冷却润滑的需求确定流量;根据所述冷却系统的主油压、转速和温度得到所述修正系数;根据所述修正系数对所述流量进行修正。
进一步的,所述总流量的需求为所述总压力对流量的需求以及所述总冷却润滑对流量的需求之和。
本发明的变速器液压系统的控制方法,电子泵在有机械泵的自动变速器中可以辅助机械泵高效地工作,使机械泵排量降低,电子泵按需为液压系统供油,提高整箱燃油经济性,电子泵在常规动力变速器中协助或独立提供液压系统压力和流量,在混合动力系统中也可兼顾混合动力系统对液压系统压力和流量的需求,电子泵输出流量按需开启,并且按照实际需求提供压力和供冷却润滑流量的切换,使电子泵达到最佳工作状态,发挥出电子泵的最大能力,保证了变速器液压系统安全可靠地运行。
本发明的第三个目的在于提出一种变速器液压系统,该系统具有能耗低且燃油经济性高的优点,并且安全可靠,提升车辆的乘坐舒适性。
为达到上述目的,本发明的技术方案是这样实现的:
一种变速器液压系统,所述变速器液压系统由电子泵驱动供油,所述液压系统包括:第一获取模块,用于获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求;第一判断模块,用于判断所述总压力对流量的需求是否大于零;第一控制模块,用于在所述总压力对流量的需求大于零时控制所述电子泵为压力回路供油,否则,控制所述电子泵为润滑回路供油,以及当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
进一步度的,所述第一控制模块用于:根据所述离合器冷却润滑的需求确定流量;根据所述冷却系统的主油压、转速和温度得到所述修正系数;根据所述修正系数对所述流量进行修正。
所述的变速器液压系统与上述第一方面的变速器液压系统的控制方法相对于现有技术所具有的优势相同,在此不再赘述。
本发明的第四个目的在于提出一种变速器液压系统,该系统具有能耗低且燃油经济性高的优点,并且安全可靠,提升车辆的乘坐舒适性。
为达到上述目的,本发明的技术方案是这样实现的:
一种变速器液压系统,所述变速器液压系统由电子泵和机械泵协同驱动供油,所述液压系统包括:第二获取模块,用于获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求;第二判断模块,用于判断总流量的需求是否大于机械泵的额定流量;第二控制模块,用于在所述总流量的需求大于机械泵的额定流量时,进一步判断所述总压力对流量的需求是否大于所述机械泵的额定流量,并在所述总压力对流量的需求大于所述机械泵的额定流量时控制所述电子泵为压力回路供油,否则,控制所述电子泵为润滑回路供油,以及当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
进一步的,所述第二控制模块用于:根据所述离合器冷却润滑的需求确定流量;根据所述冷却系统的主油压、转速和温度得到所述修正系数;根据所述修正系数对所述流量进行修正。
所述的变速器液压系统与上述的第二方面的变速器液压系统的控制方法相对于现有技术所具有的优势相同,在此不再赘述。
本发明的第五个个目的在于提出一种车辆,该车辆具有能耗低且燃油经济性高的优点,并且安全可靠,提升乘坐舒适性。
为达到上述目的,本发明的技术方案是这样实现的:
一种车辆,设置有如上述任意一个实施例所述的变速器液压系统。
所述的车辆与上述的变速器液压系统相对于现有技术所具有的优势相同,在此不再赘述。
附图说明
构成本发明的一部分的附图用来提供对本发明的进一步理解,本发明的示意性实施例及其说明用于解释本发明,并不构成对本发明的不当限定。在附图中:
图1为本发明一个方面的实施例所述的变速器液压系统的控制方法的流程图;
图2为本发明一个方面的实施例所述的变速器液压系统的控制方法的详细流程图;
图3为本发明另一个方面的实施例所述的变速器液压系统的控制方法的流程图;
图4为本发明另一个方面的实施例所述的变速器液压系统的控制方法的详细流程图;
图5为本发明一个实施例所述的变速器液压系统的结构框图;
图6为本发明另一个实施例所述的变速器液压系统的结构框图。
附图标记说明:
第一获取模块510、第一判断模块520、第一控制模块530、第二获取模块610、第二判断模块620、第二控制模块630。
具体实施方式
需要说明的是,在不冲突的情况下,本发明中的实施例及实施例中的特征可以相互组合。
下面将参考附图并结合实施例来详细说明本发明。
图1是根据本发明一个实施例的变速器液压系统的控制方法的流程图。
如图1所示,并结合图2,根据本发明一个实施例的变速器液压系统的控制方法,其中,变速器液压系统由电子泵驱动供油,变速器指自动变速器。因此,变速器液压系统为自动变速器液压系统,也称为自动变速器液压控制系统。控制方法包括:
S101:获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求。
S102:判断总压力对流量的需求是否大于零。
S103:如果是,则控制电子泵为压力回路供油,否则,控制电子泵为润滑回路供油。
S104:当电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对流量进行修正。
具体地说,如图2所示,自动变速器液压控制系统中离合器压力对流量的需求、换挡压力对流量的需求、其他压力对流量的需求之和为液压系统中总压力对流量的需求;离合器冷却润滑流量的需求、齿轮、轴和轴承润滑流量的需求、其他润滑冷却流量的需求之和为液压系统中总冷却润滑对流量的需求,自动变速器液压系统在一定工况下总压力对流量的需求与总冷却润滑对流量的需求之和为当前状态下总流量需求,如果当前状态下总流量需求大于0,则控制电子泵开始工作。
进一步来说,当判断需要电子泵工作后,液压系统中会利用一个切换阀控制电子泵的输出流量是流入压力油路还是流入冷却润滑油路(即:润滑回路)。如图2所示,当总冷却润滑对流量的需求大于0且总压力对流量的需求不大于0时切换阀控制电子泵为液压系统提供流量,否则切换阀控制电子泵为液压系统提供压力油。
根据本发明实施例的变速器液压系统的控制方法,通过流量的合理的按需控制,实时有效地为液压系统提供液压油,进而提高机械泵效率,减少能量浪费,为液压系统提供更大的压力和更多的流量,保证了变速器液压系统安全可靠地运行。
进一步地,根据离合器冷却润滑的需求确定流量,并根据修正系数对流量进行修正的步骤包括:根据离合器冷却润滑的需求确定流量;根据冷却系统的主油压、转速和温度得到修正系数;根据修正系数对流量进行修正。
具体而言,以双离合自动变速器中离合器为例,双离合自动变速器中离合器的冷却润滑至关重要。润滑油的多少对离合器的冷却润滑效果,离合器的使用寿命,驾驶舒适性等有很大关系。在本发明的一个实施例中,流量的控制可以是由离合器冷却润滑控制阀(即:电子阀)来实现。
再次结合图2,离合器的流量需求根据变速器油温和离合器滑摩功率等计算得出,得到需求之后,根据需求可以通过查表的方式控制电子阀的电流值和相应的实际流量,然后对比理论流量,通过修正系数(如主油压偏置、转速偏置、温度偏置等)调节实际流量,从而满足离合器冷却润滑流量的需求。
在以上描述中,主油压偏置指在一些工况下,通过查表可能不能满足离合器润滑流量需求,需要相应升高主油压来提高离合器润滑流量,以满足需求,提高安全性;转速偏置指在不同转速下,偏置不同的润滑电磁阀电流,满足不同转速下的流量需求,也避免过量的润滑油,以提高效率;温度偏置指在低温下有可能需要多的润滑流量,需要偏置润滑电磁阀电流(调小),来满足冷却润滑需求。
根据本发明实施例的变速器液压系统的控制方法,可以对离合器冷却润滑流量进行精准的控制,进而有效满足离合器冷却润滑流量需求,保证了离合器的安全性和可靠性,进而有效提升车辆的驾驶舒适性。
如图3所示,并结合图4,本发明的实施例公开了一种变速器液压系统的控制方法,变速器液压系统由电子泵和机械泵协同驱动供油,控制方法包括:
S301:获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求。需要说明的是,总流量的需求为总压力对流量的需求以及总冷却润滑对流量的需求之和。
S302:判断总流量的需求是否大于机械泵的额定流量。
S303:如果是,则进一步判断总压力对流量的需求是否大于机械泵的额定流量。
S304:如果是,则控制电子泵为压力回路供油,否则,控制电子泵为润滑回路供油。
S305:当电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
具体而言,如图4所示,自动变速器液压系统中,如果当前状态下总流量需求大于当前状态下机械泵输出流量时,电子泵开始工作。
进一步地,在判断需要电子泵工作后,液压系统中的一个切换阀会控制电子泵的输出流量是进入压力油路还是进入冷却润滑油路。即:如果总压力对流量的需求大于机械泵的 额定流量,则控制电子泵为压力回路供油,否则,控制电子泵为润滑回路供油。
根据本发明实施例的变速器液压系统的控制方法,电子泵在有机械泵的自动变速器中可以辅助机械泵高效地工作,使机械泵排量降低,电子泵按需为液压系统供油,提高整箱燃油经济性,电子泵在常规动力变速器中协助或独立提供液压系统压力和流量,在混合动力系统中也可兼顾混合动力系统对液压系统压力和流量的需求,电子泵输出流量按需开启,并且按照实际需求提供压力和供冷却润滑流量的切换,使电子泵达到最佳工作状态,发挥出电子泵的最大能力,保证了变速器液压系统安全可靠地运行。
进一步地,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正的步骤包括:根据所述离合器冷却润滑的需求确定流量;根据所述冷却系统的主油压、转速和温度得到所述修正系数;根据所述修正系数对所述流量进行修正。
具体而言,以双离合自动变速器中离合器为例,双离合自动变速器中离合器的冷却润滑至关重要。润滑油的多少对离合器的冷却润滑效果,离合器的使用寿命,驾驶舒适性等有很大关系。在本发明的一个实施例中,流量的控制可以是由离合器冷却润滑控制阀(即:电子阀)来实现。
再次结合图4,离合器的流量需求根据变速器油温和离合器滑摩功率等计算得出,得到需求之后,根据需求可以通过查表的方式控制电子阀的电流值和相应的实际流量,然后对比理论流量,通过修正系数(如主油压偏置、转速偏置、温度偏置等)调节实际流量,从而满足离合器冷却润滑流量的需求。
在以上描述中,主油压偏置指在一些工况下,通过查表可能不能满足离合器润滑流量需求,需要相应升高主油压来提高离合器润滑流量,以满足需求,提高安全性;转速偏置指在不同转速下,偏置不同的润滑电磁阀电流,满足不同转速下的流量需求,也避免过量的润滑油,以提高效率;温度偏置指在低温下有可能需要多的润滑流量,需要偏置润滑电磁阀电流(调小),来满足冷却润滑需求。
根据本发明实施例的变速器液压系统的控制方法,可以对离合器冷却润滑流量进行精准的控制,进而有效满足离合器冷却润滑流量需求,保证了离合器的安全性和可靠性,进而有效提升车辆的驾驶舒适性。
图5是根据本发明一个实施例的变速器液压系统的结构框图。如图5所示,根据本发明一个实施例的变速器液压系统包括:第一获取模块510、第一判断模块520和第一控制模块530。
其中,第一获取模块510用于获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求;第一判断模块520用于判断所述总压力对流量的需求是否大于零;第一控制模块530用于在所述总压力对流量的需求大于零时控制所述电子泵为压力回路供油,否则, 控制所述电子泵为润滑回路供油,以及当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
根据本发明实施例的变速器液压系统,通过流量的合理的按需控制,实时有效地为液压系统提供液压油,进而提高机械泵效率,减少能量浪费,为液压系统提供更大的压力和更多的流量,保证了变速器液压系统安全可靠地运行。
进一步地,第一控制模块530用于:根据所述离合器冷却润滑的需求确定流量;根据所述冷却系统的主油压、转速和温度得到所述修正系数;根据所述修正系数对所述流量进行修正。
根据本发明实施例的变速器液压系统,可以对离合器冷却润滑流量进行精准的控制,进而有效满足离合器冷却润滑流量需求,保证了离合器的安全性和可靠性,进而有效提升车辆的驾驶舒适性。
需要说明的是,本发明实施例的变速器液压系统的具体实现方式与本发明的第一方面的实施例中的变速器液压系统的控制方法的具体实现方式类似,具体请参见方法部分的描述,为了减少荣誉,此处不做赘述。
如图6所示,本发明的实施例公开了一种变速器液压系统,包括:第二获取模块610、第二判断模块620和第二控制模块630。
其中,第二获取模块610用于获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求;第二判断模块620用于判断总流量的需求是否大于机械泵的额定流量;第二控制模块630用于在所述总流量的需求大于机械泵的额定流量时,进一步判断所述总压力对流量的需求是否大于所述机械泵的额定流量,并在所述总压力对流量的需求大于所述机械泵的额定流量时控制所述电子泵为压力回路供油,否则,控制所述电子泵为润滑回路供油,以及当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
根据本发明实施例的变速器液压系统,电子泵在有机械泵的自动变速器中可以辅助机械泵高效地工作,使机械泵排量降低,电子泵按需为液压系统供油,提高整箱燃油经济性,电子泵在常规动力变速器中协助或独立提供液压系统压力和流量,在混合动力系统中也可兼顾混合动力系统对液压系统压力和流量的需求,电子泵输出流量按需开启,并且按照实际需求提供压力和供冷却润滑流量的切换,使电子泵达到最佳工作状态,发挥出电子泵的最大能力,保证了变速器液压系统安全可靠地运行
进一步地,第二控制模块630用于:根据所述离合器冷却润滑的需求确定流量;根据所述冷却系统的主油压、转速和温度得到所述修正系数;根据所述修正系数对所述流量进行修正。
根据本发明实施例的变速器液压系统,可以对离合器冷却润滑流量进行精准的控制,进而有效满足离合器冷却润滑流量需求,保证了离合器的安全性和可靠性,进而有效提升车辆的驾驶舒适性。
需要说明的是,本发明实施例的变速器液压系统的具体实现方式与本发明的第二方面的实施例中的变速器液压系统的控制方法的具体实现方式类似,具体请参见方法部分的描述,为了减少荣誉,此处不做赘述。
进一步地,本发明的实施例公开了一种车辆,包括:上述任意一个实施例中的变速器液压系统。该车辆具有能耗低且燃油经济性高的优点,并且安全可靠,提升乘坐舒适性。
另外,根据本发明实施例的车辆的其它构成以及作用对于本领域的普通技术人员而言都是已知的,为了减少冗余,此处不做赘述。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种变速器液压系统的控制方法,其特征在于,所述变速器液压系统由电子泵驱动供油,所述方法包括:
    获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求;
    判断所述总压力对流量的需求是否大于零;
    如果是,则控制所述电子泵为压力回路供油,否则,控制所述电子泵为润滑回路供油;
    当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
  2. 根据权利要求1所述的变速器液压系统的控制方法,其特征在于,所述根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正的步骤包括:
    根据所述离合器冷却润滑的需求确定流量;
    根据所述冷却系统的主油压、转速和温度得到所述修正系数;
    根据所述修正系数对所述流量进行修正。
  3. 一种变速器液压系统的控制方法,其特征在于,所述变速器液压系统由电子泵和机械泵协同驱动供油,所述方法包括:
    获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求;
    判断总流量的需求是否大于机械泵的额定流量;
    如果是,则进一步判断所述总压力对流量的需求是否大于所述机械泵的额定流量;
    如果是,则控制所述电子泵为压力回路供油,否则,控制所述电子泵为润滑回路供油;
    当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
  4. 根据权利要求3所述的变速器液压系统的控制方法,其特征在于,所述根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正的步骤包括:
    根据所述离合器冷却润滑的需求确定流量;
    根据所述冷却系统的主油压、转速和温度得到所述修正系数;
    根据所述修正系数对所述流量进行修正。
  5. 根据权利要求3或4所述的变速器液压系统的控制方法,其特征在于,所述总流量的需求为所述总压力对流量的需求以及所述总冷却润滑对流量的需求之和。
  6. 一种变速器液压系统,其特征在于,所述变速器液压系统由电子泵驱动供油,所述液压系统包括:
    第一获取模块,用于获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需 求;
    第一判断模块,用于判断所述总压力对流量的需求是否大于零;
    第一控制模块,用于在所述总压力对流量的需求大于零时控制所述电子泵为压力回路供油,否则,控制所述电子泵为润滑回路供油,以及当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
  7. 根据权利要求6所述的变速器液压系统,其特征在于,所述第一控制模块用于:
    根据所述离合器冷却润滑的需求确定流量;
    根据所述冷却系统的主油压、转速和温度得到所述修正系数;
    根据所述修正系数对所述流量进行修正。
  8. 一种变速器液压系统,其特征在于,所述变速器液压系统由电子泵和机械泵协同驱动供油,所述液压系统包括:
    第二获取模块,用于获取液压系统中总压力对流量的需求以及总冷却润滑对流量的需求;
    第二判断模块,用于判断总流量的需求是否大于机械泵的额定流量;
    第二控制模块,用于在所述总流量的需求大于机械泵的额定流量时,进一步判断所述总压力对流量的需求是否大于所述机械泵的额定流量,并在所述总压力对流量的需求大于所述机械泵的额定流量时控制所述电子泵为压力回路供油,否则,控制所述电子泵为润滑回路供油,以及当所述电子泵为润滑回路供油时,根据离合器冷却润滑的需求确定流量,并根据修正系数对所述流量进行修正。
  9. 根据权利要求8所述的变速器液压系统,其特征在于,所述第二控制模块用于:
    根据所述离合器冷却润滑的需求确定流量;
    根据所述冷却系统的主油压、转速和温度得到所述修正系数;
    根据所述修正系数对所述流量进行修正。
  10. 一种车辆,其特征在于,所述车辆设置有如权利要求6或7所述的发动机的变速器液压系统,或者,所述车辆设置有如权利要求8或9所述的发动机的变速器液压系统。
PCT/CN2018/081083 2017-03-29 2018-03-29 变速器液压系统、控制方法及车辆 WO2018177370A1 (zh)

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