WO2014167893A1 - 摩擦要素の温度警告装置及び温度警告方法 - Google Patents
摩擦要素の温度警告装置及び温度警告方法 Download PDFInfo
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- WO2014167893A1 WO2014167893A1 PCT/JP2014/053133 JP2014053133W WO2014167893A1 WO 2014167893 A1 WO2014167893 A1 WO 2014167893A1 JP 2014053133 W JP2014053133 W JP 2014053133W WO 2014167893 A1 WO2014167893 A1 WO 2014167893A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control 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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D48/00—External control of clutches
- F16D48/06—Control by electric or electronic means, e.g. of fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/72—Inputs being a function of gearing status dependent on oil characteristics, e.g. temperature, viscosity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/304—Signal inputs from the clutch
- F16D2500/30404—Clutch temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/30—Signal inputs
- F16D2500/316—Other signal inputs not covered by the groups above
- F16D2500/3166—Detection of an elapsed period of time
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/50—Problem to be solved by the control system
- F16D2500/51—Relating safety
- F16D2500/5104—Preventing failures
- F16D2500/5106—Overheat protection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/71—Actions
- F16D2500/7101—Driver alarm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2500/00—External control of clutches by electric or electronic means
- F16D2500/70—Details about the implementation of the control system
- F16D2500/71—Actions
- F16D2500/7101—Driver alarm
- F16D2500/7103—Acoustic alarms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/68—Inputs being a function of gearing status
- F16H59/72—Inputs being a function of gearing status dependent on oil characteristics, e.g. temperature, viscosity
- F16H2059/725—Sensing or calculating temperature of friction devices, e.g. clutches to prevent overheating of friction linings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control 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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1208—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures with diagnostic check cycles; Monitoring of failures
- F16H2061/1216—Display or indication of detected failures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control 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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1256—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected
- F16H2061/1276—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures characterised by the parts or units where malfunctioning was assumed or detected the failing part is a friction device, e.g. clutches or brakes
Definitions
- the present invention relates to a technique for issuing a warning according to the temperature of the friction element.
- the heat resistance of the friction element depends on whether the friction element has experienced baking above the maximum temperature, and a friction element with no baking experience is more resistant to heat than a friction element with baking experience. .
- An object of the present invention is to appropriately give a warning when the friction element becomes high temperature.
- a friction element temperature warning device that issues a warning in accordance with the temperature of a friction element disposed between a power source and a drive wheel, and the temperature of the friction element is an upper limit temperature.
- a warning issuing means for issuing a warning when the temperature exceeds the upper limit temperature, and a time from when the temperature of the friction element exceeds the upper limit temperature until the warning issuing means issues a warning.
- a warning alarm timing adjusting means for making the temperature of the friction element longer than the case where the temperature of the friction element exceeds the upper limit temperature for the second time or later.
- a friction element temperature warning method corresponding to the above aspect is provided.
- the time until the warning is issued becomes longer. Accordingly, a warning can be issued at a more appropriate timing according to the heat resistance of the friction element.
- FIG. 1 is a schematic configuration diagram of a hybrid vehicle.
- FIG. 2 is an example of the mode switching map.
- FIG. 3 is a flowchart showing the contents of the setting process of the temperature output value of the second clutch.
- FIG. 4 is a flowchart showing the contents of the update process of the burning history.
- FIG. 5 is a flowchart showing the content of the second clutch protection process.
- FIG. 1 is an overall configuration diagram of a hybrid vehicle (hereinafter referred to as a vehicle) 100.
- vehicle 100 includes an engine 1, a first clutch 2, a motor generator (hereinafter referred to as MG) 3, a first oil pump 4, a second oil pump 5, a second clutch 6, and a transmission 7. , Drive wheels 8, a power source controller 50, and a power train controller 51.
- MG motor generator
- Engine 1 is an internal combustion engine that uses gasoline, diesel, or the like as fuel, and the rotational speed, torque, and the like are controlled based on a command from power source controller 50.
- the first clutch 2 is a normally open hydraulic clutch interposed between the engine 1 and the MG 3.
- the first clutch 2 is engaged / released by the hydraulic pressure adjusted by the hydraulic control valve unit 71 using the discharge pressure of the first oil pump 4 or the second oil pump 5 as a source pressure based on a command from the power train controller 51.
- the state is controlled.
- a dry multi-plate clutch is used as the first clutch 2.
- MG3 is a synchronous rotating electrical machine that is arranged in series with the engine 1, has a permanent magnet embedded in a rotor, and a stator coil wound around a stator, and constitutes a power source of the vehicle 100 together with the engine 1.
- the MG 3 is controlled by applying a three-phase alternating current generated by the inverter 9 based on a command from the power source controller 50.
- the MG 3 can operate as an electric motor that is rotationally driven by the supply of electric power from the battery 10. Further, when the rotor receives rotational energy from the engine 1 or the drive wheel 8, the MG 3 functions as a generator that generates electromotive force at both ends of the stator coil and can charge the battery 10.
- the first oil pump 4 is a vane pump that operates when the rotation of the MG 3 is transmitted via the belt 4b.
- the first oil pump 4 sucks up the hydraulic oil stored in the oil pan 72 of the transmission 7 and supplies the hydraulic pressure to the hydraulic control valve unit 71.
- the second oil pump 5 is an electric oil pump that operates by receiving power from the battery 10.
- the second oil pump 5 is driven when the amount of oil is insufficient with only the first oil pump 4 based on a command from the power train controller 51, and the oil pump 72 is transmitted to the oil pan 72 of the transmission 7 in the same manner as the first oil pump 4.
- the stored hydraulic fluid is sucked up and the hydraulic pressure is supplied to the hydraulic control valve unit 71.
- the second clutch 6 is interposed between the MG 3 and the transmission 7 and the drive wheel 8.
- the second clutch is engaged and disengaged by the hydraulic pressure adjusted by the hydraulic control valve unit 71 using the discharge pressure of the first oil pump 4 or the second oil pump 5 as a base pressure based on a command from the power train controller 51. Be controlled.
- the second clutch 6 for example, a normally open wet multi-plate clutch is used.
- the transmission 7 is a stepped transmission of 7 forward speeds and 1 reverse speed composed of a plurality of planetary gear mechanisms and a plurality of friction elements (clutch or brake) for realizing the shift speed.
- a target gear position is set based on the vehicle speed and the accelerator opening, and the gear position is realized from the hydraulic control valve unit 71 so that the combination of the friction elements in the engaged state corresponds to the target gear position. This is done by controlling the hydraulic pressure supplied to the plurality of friction elements.
- a differential 12 is connected to the output shaft of the transmission 7 via a final reduction gear mechanism (not shown), and a drive wheel 8 is connected to the differential 12 via a drive shaft 13.
- the power source controller 50 and the power train controller 51 are connected by a CAN and can pass various signals through the CAN. As a signal passed from the power train controller 51 to the power source controller 50, there is a temperature output value TCL2OUT of the second clutch 6 as described later. In a situation where the second clutch 6 is at a high temperature, the power source controller 50 turns on the warning lamp 56 and performs torque-down control of the engine 1 and the MG 3 as necessary.
- the power train controller 51 switches between the EV mode and the HEV mode as the operation mode of the vehicle 100 with reference to the mode switching map shown in FIG.
- EV mode is a mode in which the first clutch 2 is disengaged and only MG3 is used as a drive source.
- the EV mode is selected when the required driving force is low and the amount of charge of the battery 10 is sufficient.
- the HEV mode is a mode in which the first clutch 2 is engaged and the engine 1 and the MG 3 are used as driving sources.
- the HEV mode is selected when the required driving force is high or when the charge amount of the battery 10 is insufficient.
- the switching line from the EV mode to the HEV mode is set at a higher vehicle speed side and a larger accelerator opening than the switching line from the HEV mode to the EV mode so that the switching between the EV mode and the HEV mode is not hunting.
- the power train The controller 51 performs WSC control that starts and stops while slipping the second clutch 6.
- the powertrain controller 51 When the select position of the transmission 7 is switched from a non-travel position (N, P, etc.) to a travel position (D, R, etc.) and the vehicle 100 starts, the powertrain controller 51 The hydraulic pressure supplied to the clutch 6 is gradually increased, and the second clutch 6 is gradually engaged while slipping. When the vehicle speed reaches VSP1, the powertrain controller 51 completely engages the second clutch 6 and ends the WSC control.
- the powertrain controller 51 receives the second clutch.
- the hydraulic pressure supplied to 6 is gradually reduced, and the second clutch 6 is gradually released while slipping.
- the power train controller 51 completely releases the second clutch 6 and ends the WSC control.
- the temperature of the second clutch 6 is monitored.
- the warning lamp 56 is lit to alert the driver, and if necessary, the engine 1 and the MG 3 Therefore, it is necessary to protect the second clutch 6 from seizing and burning.
- FIG. 3 is a flowchart showing the contents of the setting process of the temperature output value TCL2OUT of the second clutch 6, which is repeatedly executed in the powertrain controller 51.
- the powertrain controller 51 determines whether the baking history BCOUNT is zero.
- the baking history BCOUNT is a value for counting the number of times that the temperature calculation value TCL2CAL of the second clutch 6 has exceeded the upper limit temperature HTEMP2 (eg, 320 ° C.) by the process shown in FIG.
- the upper limit temperature HTEMP2 is an upper limit value of a temperature range in which the second clutch 6 can be held without being burned and causing burnout. Even if the second clutch 6 becomes higher than the upper limit temperature HTEMP2, the second clutch 6 is not seized immediately and does not cause burnout. However, when the state of the upper limit temperature HTEMP2 or higher continues, the second clutch 6 becomes seized and burns out. If 0 is stored in the baking history BCOUNT, the process proceeds to S2.
- the power train controller 51 determines whether the temperature calculation value TCL2CAL of the second clutch 6 is lower than the limit temperature HTEMP1 (for example, 560 ° C.).
- the temperature calculation value TCL2CAL of the second clutch 6 calculates the heat generation amount of the second clutch 6 based on the rotational speed difference of the second clutch 6 and the input torque to the second clutch 6, and the calculated heat generation amount, second Calculation can be performed based on the amount of heat released from the clutch 6 or the like.
- the limit temperature HTEMP1 is a temperature at which it is necessary to immediately lower the temperature of the second clutch 6 in order to seize the second clutch 6 and protect the burnout from prevention. If the temperature calculation value TCL2CAL of the second clutch 6 is lower than the limit temperature HTEMP1, the process proceeds to S3.
- the powertrain controller 51 determines whether the value of the flag STATUS is 0. Since the initial value of the flag STATUS is 0, the process proceeds to S4 at the first execution.
- the powertrain controller 51 determines whether the temperature calculation value TCL2CAL of the second clutch 6 is equal to or higher than the upper limit temperature HTEMP2. If the temperature calculation value TCL2CAL of the second clutch 6 is equal to or higher than the upper limit temperature HTEMP2, the process proceeds to S5.
- the powertrain controller 51 counts the first timer.
- the first timer is a timer that measures a time during which the state continues after the temperature calculation value TCL2CAL of the second clutch 6 becomes equal to or higher than the upper limit temperature HTEMP2.
- the powertrain controller 51 determines whether the value of the first timer has exceeded a predetermined time T1 (for example, 5 seconds). If the value of the first timer does not exceed the predetermined time T1, the process proceeds to S8, and the power train controller 51 sets a constant value (for example, several times lower than the upper limit temperature HTEMP2 as the temperature output value TCL2OUT of the second clutch 6). 315 ° C.) to the power source controller 50. On the other hand, when the value of the first timer exceeds the predetermined time T1, the process proceeds to S7, the powertrain controller 51 sets the flag STATUS to 1, and sets the temperature calculation value TCL2CAL of the second clutch 6 to The temperature output value TCL2OUT of the second clutch 6 is output to the power source controller 50.
- a predetermined time T1 for example, 5 seconds.
- the process proceeds to S9 and 1 is set in the flag STATUS.
- the power train controller 51 outputs the temperature calculation value TCL2CAL of the second clutch 6 to the power source controller 50 as the temperature output value TCL2OUT of the second clutch 6.
- the temperature calculation value TCL2CAL of the second clutch 6 is lower than the upper limit temperature HTEMP2 instead of the temperature calculation value TCL2CAL of the second clutch 6 until the predetermined time T1 elapses after the temperature calculation value TCL2CAL exceeds the upper limit temperature HTEMP2.
- a constant value (pseudo temperature) is output to the power source controller 50 as the temperature output value TCL2OUT of the second clutch 6.
- FIG. 4 is a flowchart showing the contents of the update process of the baking history BCOUNT, which is repeatedly executed in the powertrain controller 51.
- the powertrain controller 51 determines whether the flag F1 is 1. Since the initial value of the flag F1 is 0, the process proceeds to S22 at the first execution.
- the power train controller 51 determines whether the temperature calculation value TCL2CAL of the second clutch 6 is higher than the upper limit temperature HTEMP2. If it is determined that the temperature calculation value TCL2CAL of the second clutch 6 is higher than the upper limit temperature HTEMP2, the process proceeds to S23, and 1 is set in the flag F1.
- the powertrain controller 51 determines whether or not the temperature calculation value TCL2CAL of the second clutch 6 is lower than the burn end determination temperature HTEMP3 (for example, 300 ° C.) that is sufficiently lower than the upper limit temperature HTEMP2.
- the process proceeds to S25, 1 is added to the burn history BCOUNT, and 0 is set to the flag F.
- the burning history is calculated at the timing when the calculated temperature value TCL2CAL of the second clutch 6 exceeds the upper limit temperature HTEMP2 and then the calculated temperature value TCL2CAL of the second clutch 6 becomes lower than the burnout end determination temperature HTEMP3. 1 is added to BCOUNT.
- FIG. 5 is a flowchart showing the content of the protection process of the second clutch 6, which is repeatedly executed in the power source controller 50.
- the power source controller 50 determines whether or not the temperature output value TCL2OUT of the second clutch 6 received from the powertrain controller 51 exceeds the limit temperature HTEMP1. If the temperature output value TCL2OUT of the second clutch 6 exceeds the limit temperature HTEMP1, the process proceeds to S32, and the power source controller 50 turns on the warning lamp 56 and performs torque-down control of the engine 1 and MG3.
- the power source controller 50 determines whether or not the temperature output value TCL2OUT of the second clutch 6 exceeds the upper limit temperature HTEMP2. If the temperature output value TCL2OUT of the second clutch 6 exceeds the upper limit temperature HTEMP2, the process proceeds to S34.
- the power source controller 50 counts the second timer.
- the second timer is a timer that measures the time during which the state continues after the temperature output value TCL2OUT of the second clutch 6 exceeds the upper limit temperature HTEMP2.
- the power source controller 50 determines whether or not the second timer exceeds a predetermined time T2 (for example, 5 seconds). When the second timer exceeds the predetermined time T2, the process proceeds to S36, and the power source controller 50 turns on the warning lamp 56. If the second timer does not exceed the predetermined time T2, the process proceeds to S37, and the power source controller 50 does not light the warning lamp 56.
- a predetermined time T2 for example, 5 seconds
- the temperature calculation value TCL2CAL of the second clutch 6 exceeds the upper limit temperature HTEMP2 (YES in S1 of FIG. 3)
- the temperature calculation value TCL2CAL of the second clutch 6 remains unchanged as the temperature of the second clutch 6
- the constant value (pseudo temperature) lower than the upper limit temperature HTEMP2 is output as the temperature output value TCL2OUT of the second clutch 6 during the predetermined time T1 without being output as the output value TCL2OUT (S6 ⁇ S8 in FIG. 3).
- the state in which the temperature output value TCL2OUT of the second clutch 6 is lower than the upper limit temperature HTEMP2 continues until the predetermined time T1 elapses after the temperature calculation value TCL2CAL of the second clutch 6 exceeds the upper limit temperature HTEMP2 for the first time.
- the warning lamp 56 is not turned on (S33 ⁇ S37 in FIG. 5).
- the warning lamp 56 When the predetermined time T1 has elapsed, the warning lamp 56 outputs the temperature calculation value TCL2CAL of the second clutch 6 as the temperature output value TCL2OUT of the second clutch 6 (S6 ⁇ S7 in FIG. 3). The state where the temperature output value TCL2OUT of the two-clutch 6 exceeds the upper limit temperature HTEMP2 is lit for the first time after a predetermined time T2 (S35 ⁇ S36 in FIG. 5).
- the temperature calculation value TCL2CAL of the second clutch 6 exceeds the upper limit temperature HTEMP2 after the second time (NO in S1 of FIG. 3)
- the temperature calculation value TCL2CAL of the second clutch 6 is equal to the second clutch 6. Is output as a temperature output value TCL2OUT (S10 in FIG. 3). Therefore, when the temperature calculation value TCL2CAL of the second clutch 6 exceeds the upper limit temperature HTEMP2, the temperature output value TCL2OUT of the second clutch 6 also exceeds the upper limit temperature HTEMP2, and the warning lamp 56 is lit when the state continues for a predetermined time T2. (S35 ⁇ S36 in FIG. 5).
- the time from when the temperature calculation value TCL2CAL of the second clutch 6 exceeds the upper limit temperature HTEMP2 to when the warning lamp 56 is turned on is the first time that the temperature calculation value TCL2CAL of the second clutch 6 exceeds the upper limit temperature HTEMP2.
- the predetermined time T1 is longer than that in the second case.
- the heat resistance of the second clutch 6 differs depending on whether or not the second clutch 6 has experienced baking exceeding the upper limit temperature HTEMP2. If there is no baking, the heat resistance becomes high. If the temperature calculation value TCL2CAL of the second clutch 6 exceeds the upper limit temperature HTEMP2 for the first time, the time until the warning lamp 56 is turned on is lengthened. It becomes possible to call attention to the driver at an appropriate timing.
- the power for a predetermined time T1 is used.
- a constant value (pseudo temperature) lower than the upper limit temperature HTEMP2 is output from the train controller 51 to the power source controller 50 (S6 ⁇ S8 in FIG. 3). During this period, the temperature of the second clutch 6 is output to the power source controller 50 to the upper limit temperature HTEMP2. The method of making it recognize that it is lower than that was adopted.
- the above-described operation can be realized by changing only the control content (FIG. 3) on the power train controller 51 side without changing the control content (FIG. 5) on the power source controller 50 side.
- This method is particularly effective when there is a restriction in changing the control content on the power source controller 50 side.
- the predetermined time T2 may be changed depending on whether or not the temperature calculation value TCL2CAL of the second clutch 6 exceeds the upper limit temperature HTEMP2 for the first time. Similar control is possible.
- the driver is informed that the temperature of the second clutch 6 has become high by turning on the warning lamp 56, but other methods such as voice, warning sound, and display of a message on the display are used. You may make it inform.
- the friction element for monitoring the temperature is not limited to the second clutch 6, but may be a brake or clutch provided in another part, or a brake or clutch not subjected to WSC control.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Control Of Transmission Device (AREA)
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Abstract
Description
・第2クラッチ6の温度演算値TCL2CALが限界温度HTEMP1よりも高い場合
・第2クラッチ6の温度演算値TCL2CALが上限温度HTEMP2よりも低い場合
・第2クラッチ6の温度演算値TCL2CALが上限温度HTEMP2を超え、かつ、上限温度HTEMP2を超えてから所定時間T1が経過した場合
は、第2クラッチ6の温度演算値TCL2CALが、第2クラッチ6の温度出力値TCL2OUTとして動力源コントローラ50に出力される。
・第2クラッチ6の温度出力値TCL2OUTが限界温度HTEMP1を超えた場合
・第2クラッチ6の温度出力値TCL2OUTが上限温度HTEMP2を超え、その状態が所定時間T2継続した場合
は、警告灯56が点灯される。さらに、前者の場合にはエンジン1及びMG3のトルクダウン制御も合わせて行われ、第2クラッチ6の温度上昇が速やかに抑制される。
Claims (3)
- 動力源と駆動輪との間に配置される摩擦要素の温度に応じて警告を発報する摩擦要素温度警告装置であって、
前記摩擦要素の温度が上限温度を超えた場合に警告を発報する警告発報手段と、
前記摩擦要素の温度が前記上限温度を超えてから前記警告発報手段が警告を発報するまでの時間を、前記摩擦要素の温度が前記上限温度を超えたのが初めてである場合は前記摩擦要素の温度が前記上限温度を超えたのが2回目以降である場合よりも長くする警告発報タイミング調整手段と、
を備えた摩擦要素温度警告装置。 - 請求項1に記載の摩擦要素温度警告装置であって、
前記摩擦要素の温度を前記摩擦要素の動作状態に基づき演算し、前記摩擦要素の温度の演算値を前記警告発報手段に出力する摩擦要素温度演算出力手段を備え、
前記警告発報タイミング調整手段は、前記摩擦要素温度演算出力手段が、前記摩擦要素の温度の前記演算値が前記上限温度を初めて超えた場合に前記摩擦要素の温度の前記演算値に代えて前記上限温度よりも低い値を前記警告発報手段に所定時間出力することで構成される、
摩擦要素温度警告装置。 - 動力源と駆動輪との間に配置される摩擦要素の温度に応じて警告を発報する摩擦要素温度警告方法であって、
前記摩擦要素の温度が上限温度を超えた場合に警告を発報し、
前記摩擦要素の温度が前記上限温度を超えてから前記警告を発報するまでの時間を、前記摩擦要素の温度が前記上限温度を超えたのが初めてである場合は前記摩擦要素の温度が前記上限温度を超えたのが2回目以降である場合よりも長くする、
摩擦要素温度警告方法。
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US14/783,445 US9897202B2 (en) | 2013-04-10 | 2014-02-12 | Temperature warning device and temperature warning method of friction element |
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