WO2013141069A1 - 車両の動力伝達機構の制御装置 - Google Patents
車両の動力伝達機構の制御装置 Download PDFInfo
- Publication number
- WO2013141069A1 WO2013141069A1 PCT/JP2013/056725 JP2013056725W WO2013141069A1 WO 2013141069 A1 WO2013141069 A1 WO 2013141069A1 JP 2013056725 W JP2013056725 W JP 2013056725W WO 2013141069 A1 WO2013141069 A1 WO 2013141069A1
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- WIPO (PCT)
- Prior art keywords
- clutch
- engagement force
- change rate
- correction
- transmission mechanism
- Prior art date
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Classifications
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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
- F16H61/14—Control of torque converter lock-up clutches
- F16H61/143—Control of torque converter lock-up clutches using electric control means
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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
- 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
- F16D2500/3042—Signal inputs from the clutch from the output shaft
- F16D2500/30426—Speed of the output shaft
- F16D2500/30428—Speed change rate of the output shaft
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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
- F16D2500/502—Relating the clutch
- F16D2500/50293—Reduction of vibrations
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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
- F16H57/00—General details of gearing
- F16H57/0006—Vibration-damping or noise reducing means specially adapted for gearings
- F16H2057/0012—Vibration-damping or noise reducing means specially adapted for gearings for reducing drive line oscillations
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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
- F16H59/36—Inputs being a function of speed
- F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
- F16H2059/465—Detecting slip, e.g. clutch slip ratio
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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
- F16H61/14—Control of torque converter lock-up clutches
- F16H61/143—Control of torque converter lock-up clutches using electric control means
- F16H2061/145—Control of torque converter lock-up clutches using electric control means for controlling slip, e.g. approaching target slip value
Definitions
- the present invention relates to a control device for a power transmission mechanism of a vehicle, and more specifically to a device that suppresses vibration (judder) of a clutch of the power transmission mechanism of the vehicle.
- a power transmission mechanism such as an automatic transmission having an input shaft connected to a drive source mounted on the vehicle and an output shaft connected to the input shaft via a hydraulic clutch
- the clutch of the power transmission mechanism is engaged. Vibration (judder) may occur due to the differential rotation of the output, giving a sense of discomfort to the occupant. This vibration becomes more prominent as the clutch deteriorates.
- An object of the present invention is to solve the above-described problems, and in a vehicle having a power transmission mechanism having an output shaft connected via a clutch to an input shaft connected to a vehicle-mounted drive source, differential input / output rotation of the clutch
- Another object of the present invention is to provide a control device for a power transmission mechanism of a vehicle that suppresses vibration caused by the above.
- a drive source mounted on a vehicle, an input shaft connected to the drive source, and an output shaft connected to the input shaft via a clutch, And a clutch engaging force adjusting means for adjusting the engaging force of the clutch of the power transmitting mechanism, and the engaging force is adjusted by the clutch engaging force adjusting means.
- clutch output rotation change rate calculation means for calculating an output rotation change rate of the clutch, and the calculated output of the clutch
- the clutch engagement force adjusted by the clutch engagement force adjusting means is corrected to decrease, while the calculated output rotation change of the clutch is corrected.
- a clutch engagement force correction means for correcting increase the engaging force of the clutch.
- the clutch engagement force correction means corrects the clutch engagement force to decrease as the calculated output rotation change rate of the clutch increases in absolute value. Alternatively, the increase correction amount is increased.
- the clutch engagement force correction means reverses the calculated output rotation rate change of the clutch from a positive value to a negative value or from a negative value to a positive value. After that, the reduction correction or increase correction of the engagement force of the clutch is stopped until the first predetermined time elapses.
- the clutch engagement force correction means corrects the engagement force of the clutch via the hydraulic oil supplied to the clutch, and the calculation is performed. After the clutch output rotation change rate is reversed from a positive value to a negative value or from a negative value to a positive value, after a second predetermined time longer than the first predetermined time has elapsed, the clutch engagement force reduction correction or The increase correction is stopped.
- the clutch engagement force correction means determines whether or not the calculated output rotation change rate of the clutch is within a predetermined range. And a decrease correction or an increase correction of the engagement force of the clutch is stopped when the rotation change rate range determining means determines that the output rotation change rate of the clutch is within a predetermined range.
- the clutch engagement force correction means corrects the engagement force of the clutch via hydraulic oil supplied to the clutch, and the predetermined range is It is configured to be changed based on at least the temperature of the hydraulic oil supplied to the clutch.
- the clutch engagement force correction means corrects a decrease in engagement force of the clutch by multiplying the calculated output rotation change rate of the clutch by a gain, or The amount of increase correction is calculated.
- a power transmission mechanism having at least an input shaft connected to a drive source mounted on a vehicle and an output shaft connected to the input shaft via a clutch, and an engagement force of the clutch are adjusted.
- a clutch engagement force adjusting means for transmitting the drive force output from the drive source to the drive wheels via the clutch with the engagement force adjusted.
- the rate of change is calculated, and when the calculated output rotation change rate of the clutch is a positive value, the clutch engaging force is decreased and corrected, while when the calculated output rotation rate of change of the clutch is a negative value, the clutch engaging force is corrected. Therefore, the clutch vibration can be detected from the clutch output rotation rate of change, and the clutch output rotation rate of change is positive, in other words, the differential rotation of the clutch is reduced. If the clutch output rotation rate is negative, in other words, if the clutch differential rotation is increasing, the clutch engagement force is increased to correct the clutch differential rotation. Therefore, the vibration of the clutch can be effectively suppressed.
- the control apparatus for a vehicle power transmission mechanism according to claim 2 is configured such that the amount of decrease or increase correction of the engagement force of the clutch is increased as the calculated output rotation change rate of the clutch is larger in absolute value. Therefore, in addition to the effects described above, the differential rotation of the clutch can be maintained at a more appropriate value.
- the vehicle power transmission mechanism control device determines whether or not the calculated output rotation change rate of the clutch is within a predetermined range, and it is determined that the output rotation change rate of the clutch is within the predetermined range.
- the predetermined range is reduced to facilitate correction for vibrations of a predetermined level or more. In a region where vibration is unlikely to occur, it is possible to make the correction difficult by enlarging the predetermined range, so that unnecessary correction can be avoided and necessary correction can be reliably performed.
- the clutch engaging force is corrected via the hydraulic oil supplied to the clutch, and at least the predetermined range is the temperature of the hydraulic oil supplied to the clutch.
- the clutch engagement force correction means multiplies the calculated clutch output rotation change rate by a gain to reduce or increase the clutch engagement force. Since the configuration is such that the amount is calculated, in addition to the effects described above, the amount of correction can be calculated appropriately.
- FIG. 1 is an overall view schematically showing a control device for a power transmission mechanism of a vehicle according to the present invention. It is a flowchart which shows operation
- FIG. 3 is an explanatory diagram showing a clutch output rotation speed and a clutch output rotation change rate calculated in the flowchart of FIG. 2.
- 2 is an explanatory diagram explaining the processing of the flow chart.
- FIG. 3 is an explanatory diagram showing a characteristic of a clutch correction command pressure with respect to a clutch output rotation change rate calculated by the processing of the flowchart of FIG. 2. 2 is an explanatory view similar to FIG. 5, showing the first and second predetermined times used in the processing of the flow chart.
- FIG. 1 is an overall view schematically showing a control device for a vehicle power transmission mechanism according to this embodiment.
- reference numeral 1 denotes a vehicle, and a power transmission mechanism 2 is mounted on the vehicle 1.
- the power transmission mechanism 2 includes an automatic transmission, more specifically, a continuously variable transmission CVT (hereinafter referred to as “CVT”) 10 and the like.
- the CVT 10 shifts the output of the engine (drive source) 12 and transmits it to the left and right drive wheels (front wheels) WL and WR via the differential mechanism D.
- the engine 12 is composed of, for example, a spark ignition type four-cylinder internal combustion engine using gasoline as fuel.
- the CVT 10 has an input shaft 14, an output shaft 16, and an intermediate shaft 18 provided in parallel to each other, and is housed in the CVT case 10 a together with the differential mechanism D.
- the input shaft 14 is connected to the engine 12, more specifically, to the output shaft (crankshaft) 12b of the engine 12 via a coupling mechanism CP.
- the input shaft 14 is provided with a drive pulley 20 of the CVT 10.
- the drive pulley 20 is provided so that it cannot move relative to the input shaft 14 and cannot move in the axial direction.
- the drive pulley 20 cannot move relative to the input shaft 14 and can move in the axial direction relative to the fixed pulley half 20a.
- the movable pulley half 20b The movable pulley half 20b.
- a drive pulley width adjusting mechanism 22 that adjusts the pulley width (in other words, the side pressure) of the drive pulley 20 according to the supplied hydraulic pressure (hydraulic oil pressure) is provided on the side of the movable pulley half 20b.
- the drive pulley width adjusting mechanism 22 includes a cylinder wall 22a provided on the side of the movable pulley half 20b, a cylinder chamber 22b formed between the cylinder wall 22a and the movable pulley half 20b, and a cylinder chamber 22b. And a return spring 22c that urges the movable pulley half 20b toward the fixed pulley half 20a at all times.
- a driven pulley 24 is provided on the output shaft 16.
- the driven pulley 24 is provided on the output shaft 16 so as not to rotate relative to the output shaft 16 so as not to move in the axial direction.
- the movable pulley half 24b The movable pulley half 24b.
- a driven pulley width adjusting mechanism 26 that adjusts the pulley width (side pressure) of the driven pulley 24 according to the supplied hydraulic pressure is provided on the side of the movable pulley half 24b.
- the driven pulley width adjusting mechanism 26 includes a cylinder wall 26a provided on the side of the movable pulley half 24b, a cylinder chamber 26b formed between the cylinder wall 26a and the movable pulley half 24b, and a cylinder chamber 26b. And a return spring 26c that urges the movable pulley half 24b in a direction to always approach the fixed pulley half 24a.
- a metal V-shaped belt (power transmission element) 30 is wound between the drive pulley 20 and the driven pulley 24.
- the belt 30 has a large number of elements connected by a ring-shaped member (not shown), and the V-shaped surface formed on each element is in contact with the pulley surfaces of the drive pulley 20 and the driven pulley 24 and is pressed strongly from both sides. Is transmitted from the drive pulley 20 to the driven pulley 24.
- a planetary gear mechanism 32 is provided on the input shaft 14.
- the planetary gear mechanism 32 includes a sun gear 34 that is spline-fitted to the input shaft 14 and rotates integrally with the input shaft 14, a ring gear 36 that is integrally formed with the fixed pulley half 20 a of the drive pulley 20, and the input shaft 14.
- a planetary carrier 40 is provided so as to be rotatable relative to the planetary carrier 40, and a plurality of planetary gears 42 are rotatably supported by the planetary carrier 40.
- Each planetary gear 42 always meshes with both the sun gear 34 and the ring gear 36.
- An FWD (forward) clutch 44 is provided between the sun gear 34 and the ring gear 36, and an RVS (reverse) brake clutch 46 is provided between the planetary carrier 40 and the case 10a.
- the FWD clutch 44 moves the clutch piston 44b to the left in FIG. 1 against the spring force of the return spring 44c, so that the friction plate and the ring gear on the sun gear 34 side are moved.
- the sun gear 34 and the ring gear 36 are engaged with each other by engaging the friction plate 36 on the 36 side (in-gear), thereby enabling the vehicle 1 to travel forward.
- the RVS brake clutch 46 is supplied with hydraulic oil to the cylinder chamber 46a, and moves the brake piston 46b to the left in FIG. 1 against the spring force of the return spring 46c, so that the friction plate and the planetary carrier on the case 10a side are moved.
- the case 10a and the planetary carrier 40 are coupled to each other by engaging the friction plate on the 40 side, thereby enabling the vehicle 1 to travel backward.
- the output shaft 16 is provided with a start (start) clutch (the above-described “clutch”) 52 together with the intermediate shaft drive gear 50.
- the starting clutch 52 is supplied with hydraulic oil to the cylinder chamber 52a, and moves the clutch piston 52b against the spring force of the return spring 52c, thereby causing a friction plate on the output shaft 16 side and a friction plate on the intermediate shaft drive gear 50 side. And the output shaft 16 and the intermediate shaft drive gear 50 are coupled.
- the intermediate shaft 18 is provided with an intermediate shaft driven gear 54 and a DF (differential) drive gear 56.
- the intermediate shaft driven gear 54 and the DF drive gear 56 are both fixedly provided on the intermediate shaft 18, and the intermediate shaft driven gear 54 always meshes with the intermediate shaft drive gear 50.
- the DF drive gear 56 always meshes with a DF driven gear 58 fixed to the case Dc.
- the left and right drive shafts 60 are fixed to the differential mechanism D, and the left and right drive wheels WL and WR are attached to the ends thereof.
- the DF driven gear 58 is always meshed with the DF drive gear 56, and the entire case Dc rotates around the left and right drive shafts 60 as the intermediate shaft 18 rotates.
- the pulley width is changed by increasing / decreasing the side pressures of both pulleys of the drive pulley 20 and the driven pulley 24, and the winding radius of the belt 30 with respect to both the pulleys 20, 24 is changed.
- a desired gear ratio according to the pulley ratio) can be obtained steplessly.
- the power transmission mechanism 2 includes the CVT 10, the FWD clutch 44, the RVS brake clutch 46, and the start clutch 52.
- the engagement / disengagement is performed by controlling the pressure (hydraulic pressure) of the hydraulic fluid supplied to the cylinder chambers 22b, 26b, 44a, 46a, 52a via the hydraulic control device 62.
- the hydraulic control device 62 is driven by the engine 12 to pump hydraulic oil from the reservoir 62a and discharge it to the oil passage 62b, and a group of electromagnetic control valves arranged in the oil passage 62b to switch the flow and pressure of the hydraulic oil. 62d.
- the group of electromagnetic control valves 62d includes a linear solenoid valve (normally open type) that controls the hydraulic pressure supplied to the cylinder chambers 22b and 26b of the drive pulley width adjusting mechanism 22 and the driven pulley width adjusting mechanism 26, and an FWD clutch 44.
- a shift solenoid valve that controls the hydraulic pressure supplied to the cylinder chambers 44a and 46a of the RVS brake clutch 46 and a linear solenoid valve that controls the hydraulic pressure supplied to the cylinder chamber 52a of the start clutch 52 are included.
- the throttle valve (not shown) arranged in the intake system of the engine 12 is disconnected from the accelerator pedal arranged on the vehicle driver's seat floor and connected to a DBW (Drive (By Wire) mechanism 64,
- the actuator (stepping motor) 64a is opened and closed.
- the intake air metered by the throttle valve in the engine 12 flows through an intake manifold (not shown), mixes with fuel injected from the injector 66 near the intake port of each cylinder to form an air-fuel mixture, and the intake valve opens. When it is done, it flows into a combustion chamber (not shown). The air-fuel mixture is ignited and combusted in the combustion chamber, and after driving the piston to rotate the output shaft 12b, it is discharged to the outside of the engine 12 as exhaust.
- a crank angle sensor 68 is provided near the cam shaft (not shown) of the engine 12 and outputs a signal indicating the engine speed NE for each predetermined crank angle position of the piston.
- an absolute pressure sensor 70 is provided downstream of the throttle valve to output a signal proportional to the intake pipe pressure (engine load) PBA.
- a water temperature sensor 72 is provided near a cooling water passage (not shown) of the engine 12 to generate an output corresponding to the cooling water temperature TW, and an intake air temperature sensor 74 is provided at an appropriate position upstream of the throttle valve. An output corresponding to the intake air temperature TA is generated.
- a throttle opening sensor 76 is provided in the vicinity of the stepping motor 64a of the DBW mechanism 64 to output a signal proportional to the throttle opening TH.
- an oil temperature sensor 78 is provided in the reservoir 62a and the like to generate an output indicating the temperature of hydraulic oil (ATF) supplied to the CVT 10.
- an NDR sensor 80 is provided in the vicinity of the drive pulley 20 to output a pulse signal corresponding to the rotational speed of the drive pulley 20 (the input rotational speed NDR of the CVT), and an NDN sensor 82 in the vicinity of the driven pulley 24. And outputs a pulse signal indicating the rotational speed of the driven pulley 24 (CVT output rotational speed NDN).
- a vehicle speed sensor 84 is provided in the vicinity of the drive shaft 60, and the vehicle speed (traveling speed of the vehicle 1) V or the rotational speed of the intermediate shaft 18 (in other words, the output rotational speed of the start clutch 52) through the rotational speed of the drive shaft 60.
- a pulse signal indicating is output.
- the NDR sensor 80, the NDN sensor 82, and the vehicle speed sensor 84 are composed of a magnetoelectric conversion element such as a magnetic pickup, and a magnetic field formed by a plurality of protrusions arranged around the drive / driven pulleys 20 and 24 and the intermediate shaft 18. A plurality of pulse signals are output per one rotation in accordance with the crossing.
- an accelerator opening sensor 86 is provided in the vicinity of the accelerator pedal of the vehicle driver's seat and outputs a signal indicating the accelerator opening AP corresponding to the driver's accelerator pedal operation amount.
- the output of the crank angle sensor 68 and the like described above is sent to an ECU (Electronic Control Unit) 90.
- the ECU 90 includes a microcomputer 90a, and the sensor output described above is input to the microcomputer 90a.
- the microcomputer 90a controls the operation of the engine 12 based on the sensor output, and controls the operations of the CVT 10, the FWD clutch 44, the RVS brake clutch 46, and the start clutch 52 through adjustment of the engagement force by supplying and discharging hydraulic oil. .
- the engine (drive source) 12 mounted on the vehicle 1, the input shaft 14 connected to the engine 12, and the input shaft 14 are connected to each other via the start clutch (clutch) 52.
- FIG. 2 is a flowchart showing the operation of the above-described apparatus, more specifically, the operation of the ECU 90.
- the clutch output rotational speed (the output rotational speed of the clutch 52, more precisely, the rotational speed of the intermediate shaft 18) is calculated. “S” indicates a processing step in the flowchart of FIG.
- the clutch output speed is calculated by measuring the time interval of the pulse signal output from the vehicle speed sensor 84.
- FIG. 3 is an explanatory diagram showing a pulse signal output from the vehicle speed sensor 84.
- the time interval of the rising edge of the pulse train is used in the conventional measurement method, but in this embodiment, the clutch output rotation speed is calculated using the time interval of the falling edge in addition to this.
- the clutch output rotational speed may be calculated using the time interval between the rising edges of the pulse train and the time interval between the rising edges and the falling edges.
- the process then proceeds to S12 to calculate the clutch output rotation change rate (output rotation change rate of the clutch 52).
- the clutch output rotation change rate is calculated by obtaining a differential value of the clutch output rotation speed calculated in S10.
- Fig. 5 shows the clutch output rotation speed and the clutch output rotation change rate.
- this processing is performed by using a value obtained by multiplying the rotation change rate by a gain (proportional gain) in accordance with the sign of the clutch output rotation change rate as a clutch correction command pressure (amount of decrease correction or increase correction). ).
- FIG. 6 is a time chart for explaining the operation of the apparatus according to this embodiment.
- the vibration is caused by the differential rotation of the input and output of the clutch 52 as described above. ) May cause the passenger to feel uncomfortable. This vibration becomes more prominent as the clutch 52 deteriorates.
- the input / output differential rotation of the clutch 52 is indicated by the output rotation speed of the clutch 52.
- the vibration of the clutch 52 also increases due to the torsion of the drive shaft 60 on which the vehicle speed sensor 84 is disposed, and is influenced by the friction coefficient (friction coefficient of the friction plate) ⁇ of the clutch 52, and the input / output of the clutch 52. This occurs in a state in which the differential rotation increases and the friction coefficient ⁇ decreases.
- the clutch output rotation change rate is obtained from the clutch output rotation speed, and when the calculated clutch output rotation change rate is a positive value, the differential rotation between the input and output of the clutch 52 decreases, and the friction coefficient ⁇ Therefore, the clutch correction command pressure is calculated so as to correct the clutch engagement force to be decreased.
- the value is negative, the input / output differential rotation of the clutch 52 increases and the friction coefficient ⁇ decreases.
- the clutch correction command pressure is calculated so that the engagement force is increased and corrected.
- FIG. 7 is an explanatory diagram showing the characteristics of the clutch correction command pressure with respect to the clutch output rotation change rate.
- the clutch correction command pressure is calculated so as to increase as the clutch output rotation change rate increases, whether the correction is a decrease correction or an increase correction. That is, the clutch correction command pressure is calculated such that the amount of decrease correction or increase correction increases as the clutch output rotation change rate increases in absolute value.
- the clutch correction command pressure is calculated by multiplying the clutch output rotation change rate by the gain, and the gain is also changed depending on whether the change rate is positive or negative.
- Figure 8 shows the threshold range. As shown in the figure, the threshold value is set to small positive and negative (up and down) values th1 and th2 centered on zero of the clutch output rotation change rate, and the threshold range is divided by these upper and lower values th1 and th2. Means a range.
- the reason for making such a determination in S20 is to perform the necessary corrections while avoiding unnecessary corrections. That is, the vibration of the clutch 52 differs depending on the temperature (oil temperature) TATF of the hydraulic oil ATF supplied to the clutch 52 and also depends on the rotation speed (vehicle speed V) of the output shaft 16.
- the threshold range is set narrow in a region where vibration is likely to occur based on the oil temperature and vehicle speed, at least the oil temperature (that is, clutch F / B control is easy to be executed), while the region where vibration is difficult to occur. Then, it is changed so that it is wide (that is, the clutch F / B control is easily stopped, in other words, unnecessary control is avoided).
- the range is reduced in the region where vibration is likely to occur to compensate for vibration above a predetermined level.
- the threshold range is configured to be changed based on the oil temperature and vehicle speed, at least the temperature of the hydraulic oil supplied to the clutch 52, unnecessary correction can be avoided more reliably, while necessary correction can be made. This is because it can be performed more reliably.
- the second predetermined time elapses, that is, the clutch output rotation change rate is determined to be out of the threshold value range. It is determined whether or not a predetermined time has elapsed.
- FIG. 8 shows the second predetermined time. The second predetermined time is set to a value longer (larger) than the first predetermined time.
- the clutch F / B control is performed by outputting the clutch correction command pressure obtained by multiplying the clutch output rotation change rate by the gain so that the phase of the clutch output rotation change rate is reversed.
- the clutch output rotation change rate repeats reversal from a positive value to a negative value or from a negative value to a positive value as shown in the figure, but it is determined that the clutch output rotation change rate is out of the threshold range. It means that one of the upper and lower values th1 and th2 has been exceeded by inverting to a value or inverting from a negative value to a positive value.
- the clutch output rotation change rate is repeatedly reversed between a positive value and a negative value
- the clutch F / B is limited only when the clutch output rotation change rate continuously exceeds the threshold range.
- a second predetermined time that is longer than the first predetermined time has elapsed after the clutch output rotation change rate has reversed from a positive value to a negative value or from a negative value to a positive value and exceeds either of the upper and lower values th1 and th2.
- the clutch F / B control is stopped in order to prevent the clutch F / B control from resulting in an increase in vibration due to a response delay of the hydraulic oil.
- the second predetermined time is a value that takes into account the response delay of the hydraulic oil, it is inevitably set to a value that is longer than the first predetermined time for noise removal, and the operation such as the oil temperature It is set freely depending on the oil response.
- the differential rotation of the input / output of the clutch 52 is shown by the output rotational speed of the clutch 52 detected from the output of the vehicle speed sensor 84.
- the clutch 52 detected from the output of the NDN sensor 82 is added.
- the input / output differential rotation of the clutch 52 may be directly calculated using the input rotation speed.
- the drive source (engine) 12 mounted on the vehicle 1, the input shaft 14 connected to the drive source, and the input shaft via the clutch (starting clutch) 52.
- a power transmission mechanism (CVT10) 2 having at least an output shaft 16 to be connected, and clutch engagement force adjusting means (ECU 90) for adjusting the clutch engagement force of the power transmission mechanism 2 are output from the drive source.
- the output rotation change rate of the clutch A clutch output rotation change rate calculating means (ECU 90, S10, S12) for calculating the clutch output, and when the calculated output rotation change rate of the clutch is a positive value, Clutch engagement force correction means for correcting the clutch engagement force that is adjusted by the H engagement force adjustment means to be decreased while increasing the clutch engagement force when the calculated output rotation change rate of the clutch is negative.
- the clutch vibration can be detected from the clutch output rotation change rate, and the output rotation change rate corresponding to the clutch output rotation change rate is a positive value.
- the differential rotation is decreasing, the clutch engagement force is corrected to decrease.
- the output rotation change rate is negative, in other words, when the differential rotation of the clutch 52 is increasing, the clutch engagement force is corrected to increase.
- the differential rotation of the clutch 52 can be held at an appropriate value, and therefore the vibration of the clutch 52 can be effectively suppressed.
- the clutch 52 is not limited to a hydraulic type as long as it is limited to this configuration.
- the clutch engagement force correction means increases the amount of decrease or increase correction of the engagement force of the clutch as the calculated output rotation change rate of the clutch is larger in absolute value (ECU 90, S36 to S40). Since it comprised, in addition to an above-described effect, the differential rotation of the clutch 52 can be hold
- the clutch engagement force correcting means may be configured such that the first predetermined time elapses after the calculated output rotation change rate of the clutch is reversed from a positive value to a negative value or from a negative value to a positive value. Since the reduction correction or increase correction of the engagement force is stopped (ECU 90, S20, S26 to S30, S18), in addition to the above-described effects, unnecessary correction due to noise is avoided. be able to.
- the clutch engagement force correction means corrects the engagement force of the clutch via the hydraulic oil supplied to the clutch, and the calculated output rotation change rate of the clutch is from a positive value to a negative value or from a negative value. After reversing to a positive value, after a second predetermined time longer than the first predetermined time elapses, the decrease correction or increase correction of the engagement force of the clutch is stopped (ECU 90, S20, S26 to S34). Therefore, in addition to the above-described effects, it is possible to avoid the result of increasing the vibration of the clutch 52 due to the response delay of the hydraulic oil by performing the correction.
- the clutch engagement force correction means includes rotation change rate range determination means (ECU 90, S20) for determining whether the calculated output rotation change rate of the clutch is within a predetermined range (threshold range).
- the clutch engagement force decrease correction or increase correction is stopped (ECU 90, S22 to S24).
- unnecessary correction can be avoided, and necessary correction can be reliably performed. That is, by setting a predetermined range according to whether or not the clutch 52 is susceptible to vibration, for example, in a region where vibration is likely to occur, the predetermined range may be reduced to facilitate correction of vibration above a predetermined level. In a region where vibration is unlikely to occur, it is possible to enlarge the predetermined range and make it difficult to correct, thereby avoiding unnecessary correction and ensuring necessary correction.
- the clutch engagement force correction means corrects the engagement force of the clutch via the hydraulic oil supplied to the clutch, and the predetermined range is changed based on at least the temperature of the hydraulic oil supplied to the clutch 52. Since it is configured as described above, in addition to the effects described above, unnecessary correction can be avoided more reliably, while necessary correction can be more reliably performed.
- the clutch engagement force correction means is configured to calculate a decrease correction or increase correction amount (clutch correction command pressure) of the clutch engagement force by multiplying the calculated rate of change in output rotation of the clutch by a gain. Therefore, in addition to the effects described above, the amount of correction can be calculated appropriately.
- the starting clutch is disclosed as the clutch.
- the FWD clutch 44 may be used as long as it is a clutch that connects an input shaft connected to a drive source mounted on a vehicle and an output shaft.
- an RVS brake clutch 46 or a torque converter lock-up clutch.
- the engine is disclosed as a drive source.
- the present invention is not limited to this, and may be an electric motor or a hybrid of the electric motor and the engine.
- the power transmission mechanism including an automatic transmission (CVT) having a speed change function is shown. As long as the mechanism has an output shaft connected to the input shaft via a clutch, the speed change function need not be provided. You may add
- a power transmission mechanism having at least an input shaft connected to a drive source mounted on a vehicle and an output shaft connected thereto via a clutch (start clutch), and the clutch of the power transmission mechanism
- the clutch output rotation change rate is calculated, and when the calculated output shaft rotation change rate is a positive value, the adjusted clutch engagement force is reduced.
- the clutch engaging force is increased and corrected, so that the vibration caused by the differential rotation of the clutch input / output can be suppressed. it can.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Description
ッチを追加しても良い。
Claims (7)
- 車両に搭載される駆動源と、前記駆動源に接続される入力軸と前記入力軸にクラッチを介して接続される出力軸とを少なくとも有する動力伝達機構と、前記動力伝達機構のクラッチの係合力を調整するクラッチ係合力調整手段とを備え、前記駆動源から出力される駆動力を前記クラッチ係合力調整手段によって係合力が調整されたクラッチを介して駆動輪に伝達して走行する車両の動力伝達機構の制御装置において、前記クラッチの出力回転変化率を算出するクラッチ出力回転変化率算出手段と、前記算出されたクラッチの出力回転変化率が正値のときは前記クラッチ係合力調整手段によって調整されたクラッチの係合力を減少補正する一方、前記算出されたクラッチの出力回転変化率が負値のときは前記クラッチの係合力を増加補正するクラッチ係合力補正手段とを備えたことを特徴とする車両の動力伝達機構の制御装置。
- 前記クラッチ係合力補正手段は、前記算出されたクラッチの出力回転変化率が絶対値において大きいほど前記クラッチの係合力の減少補正または増加補正の量を大きくすることを特徴とする請求項1記載の車両の動力伝達機構の制御装置。
- 前記クラッチ係合力補正手段は、前記算出されたクラッチの出力回転変化率が正値から負値または負値から正値に反転した後、第1の所定時間が経過するまでは前記クラッチの係合力の減少補正または増加補正を停止することを特徴とする請求項1または2記載の車両の動力伝達機構の制御装置。
- 前記クラッチ係合力補正手段は前記クラッチに供給される作動油を介して前記クラッチの係合力を補正すると共に、前記算出されたクラッチの出力回転変化率が正値から負値または負値から正値に反転した後、前記第1の所定時間より長い第2の所定時間が経過した後は前記クラッチの係合力の減少補正または増加補正を停止することを特徴とする請求項3記載の車両の動力伝達機構の制御装置。
- 前記クラッチ係合力補正手段は、前記算出されたクラッチの出力回転変化率が所定範囲にあるか判定する回転変化率範囲判定手段を備えると共に、前記回転変化率範囲判定手段によって前記クラッチの出力回転変化率が所定範囲にあると判定されたときは前記クラッチの係合力の減少補正または増加補正を停止することを特徴とする請求項1から4のいずれかに記載の車両の動力伝達機構の制御装置。
- 前記クラッチ係合力補正手段は前記クラッチに供給される作動油を介して前記クラッチの係合力を補正すると共に、前記所定範囲は少なくとも前記クラッチに供給される作動油の温度に基づいて変更されることを特徴とする請求項5記載の車両の動力伝達機構の制御装置。
- 前記クラッチ係合力補正手段は、前記算出されたクラッチの出力回転変化率にゲインを乗じて前記クラッチの係合力の減少補正または増加補正の量を算出することを特徴とする請求項1から6のいずれかに記載の車両の動力伝達機構の制御装置。
Priority Applications (5)
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CN201380004459.2A CN104011419B (zh) | 2012-03-19 | 2013-03-12 | 车辆的动力传递机构的控制装置 |
US14/363,855 US9334953B2 (en) | 2012-03-19 | 2013-03-12 | Control apparatus for vehicle power transmission mechanism |
JP2014506148A JP5865484B2 (ja) | 2012-03-19 | 2013-03-12 | 車両の動力伝達機構の制御装置 |
DE112013000322.8T DE112013000322T5 (de) | 2012-03-19 | 2013-03-12 | Steuervorrichtung für Fahrzeugleistungsübertragungsmechanismus |
IN4081CHN2014 IN2014CN04081A (ja) | 2012-03-19 | 2013-03-12 |
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JP2012-062588 | 2012-03-19 | ||
JP2012062588 | 2012-03-19 |
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WO2013141069A1 true WO2013141069A1 (ja) | 2013-09-26 |
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PCT/JP2013/056725 WO2013141069A1 (ja) | 2012-03-19 | 2013-03-12 | 車両の動力伝達機構の制御装置 |
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US (1) | US9334953B2 (ja) |
JP (1) | JP5865484B2 (ja) |
CN (1) | CN104011419B (ja) |
DE (1) | DE112013000322T5 (ja) |
IN (1) | IN2014CN04081A (ja) |
WO (1) | WO2013141069A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015068383A (ja) * | 2013-09-27 | 2015-04-13 | アイシン精機株式会社 | クラッチ制御装置およびクラッチ制御システム |
Families Citing this family (5)
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DE102014206183A1 (de) * | 2013-04-11 | 2014-10-16 | Schaeffler Technologies Gmbh & Co. Kg | Verfahren zur Verminderung von Rupfschwingungen einer Reibungskupplung in einem Antriebsstrang eines Kraftfahrzeugs |
US9457659B2 (en) * | 2014-12-17 | 2016-10-04 | Gm Global Technology Operations, Llc | Transmission with integrated power take-off |
KR101755797B1 (ko) * | 2015-06-26 | 2017-07-10 | 현대자동차주식회사 | Dct용 클러치 토크 학습방법 및 장치 |
JP6729615B2 (ja) * | 2018-03-02 | 2020-07-22 | トヨタ自動車株式会社 | 車両の制御装置 |
CN113124147A (zh) * | 2021-04-16 | 2021-07-16 | 山推工程机械股份有限公司 | 一种换挡控制方法、装置及工程机械 |
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JP3518648B2 (ja) | 1996-04-22 | 2004-04-12 | 日産自動車株式会社 | 自動変速機のロックアップ制御装置 |
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JP2010025214A (ja) * | 2008-07-18 | 2010-02-04 | Isuzu Motors Ltd | 流体伝動装置及び摩擦式クラッチを備えた車両用動力伝達装置 |
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2013
- 2013-03-12 JP JP2014506148A patent/JP5865484B2/ja not_active Expired - Fee Related
- 2013-03-12 US US14/363,855 patent/US9334953B2/en not_active Expired - Fee Related
- 2013-03-12 WO PCT/JP2013/056725 patent/WO2013141069A1/ja active Application Filing
- 2013-03-12 CN CN201380004459.2A patent/CN104011419B/zh active Active
- 2013-03-12 DE DE112013000322.8T patent/DE112013000322T5/de not_active Withdrawn
- 2013-03-12 IN IN4081CHN2014 patent/IN2014CN04081A/en unknown
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JPS6152427A (ja) * | 1984-08-17 | 1986-03-15 | Mitsubishi Motors Corp | スリップ式クラッチ装置の制御方法 |
JPH03121322A (ja) * | 1989-09-30 | 1991-05-23 | Suzuki Motor Corp | 連続可変変速機のクラッチ制御方法 |
JPH04171323A (ja) * | 1990-10-31 | 1992-06-18 | Suzuki Motor Corp | 自動発進クラッチ制御方法 |
JP2001241545A (ja) * | 2000-03-01 | 2001-09-07 | Unisia Jecs Corp | クラッチ制御装置 |
JP2004278769A (ja) * | 2003-03-19 | 2004-10-07 | Nissan Motor Co Ltd | マニュアルトランスミッションの自動変速制御装置 |
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JP2015068383A (ja) * | 2013-09-27 | 2015-04-13 | アイシン精機株式会社 | クラッチ制御装置およびクラッチ制御システム |
Also Published As
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CN104011419B (zh) | 2016-08-24 |
IN2014CN04081A (ja) | 2015-09-04 |
DE112013000322T5 (de) | 2014-08-21 |
US9334953B2 (en) | 2016-05-10 |
JPWO2013141069A1 (ja) | 2015-08-03 |
CN104011419A (zh) | 2014-08-27 |
US20140303863A1 (en) | 2014-10-09 |
JP5865484B2 (ja) | 2016-02-17 |
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