JP5668451B2 - Automatic control manual transmission and control method thereof - Google Patents

Description

  The present invention relates to an automatic control manual transmission capable of adding a warm-up promoting function with a minimum improvement to a conventional automatic control manual transmission (ATM) and a control method therefor.

  Along with the increasing demands for reducing fuel consumption, vehicle transmissions (transmissions) are also required to be highly efficient, and automated manual transmission is no exception. It is coming. This automatic control type manual transmission is different from the automatic transmission (AT) in that the operation system is automatically controlled (automatic) with the conventional manual transmission (MT) mechanism unchanged. It has the same structure as a manual transmission.

  As one of the methods for improving the efficiency of this automatic control type manual transmission, as shown in FIGS. 5 and 6, when warming up, the input shaft 11, the output shaft 12, the auxiliary shaft 13, And the method of reducing the stirring resistance by the auxiliary gear 13a of the lubricating oil A stored in the oil pan 14 by increasing the oil temperature of the lubricating oil A that lubricates the main gears 11a, 12a, the auxiliary gear 13a, etc. is proposed. Has been.

  As a method for raising the temperature of the lubricating oil A, an electric heater 51 is provided inside the oil pan 14 as shown in FIG. 5 and is controlled by a control device (heater controller) 53 based on the detection value of the temperature sensor 52. There is a method of heating the lubricating oil A using the electric heater system 50.

Further, as shown in FIG. 6, an exhaust gas branch passage 62 is provided in the exhaust pipe 61, the exhaust gas G is guided to the heat exchanger 64 through the flow rate adjusting valve 63, and the oil provided in the lubricating oil pipe 15 is provided. The lubricating oil A is guided from the pump 15 a to the heat exchanger 64, and the lubricating oil A is heated by the heat of the exhaust gas G. The amount of heating is flowed by the control device (controller) 66 based on the detected value of the temperature sensor 65. There is also a method of heating the lubricating oil A using a heat exchanger system 60 that adjusts by controlling the adjusting valve 63.

  In this connection, in order to supply lubricating oil of the appropriate temperature to the oil pan of the transmission, a heat storage tank is provided outside the transmission, and heating means such as an electric heater is provided in the heat storage tank so that the low temperature stored in the oil pan is stored. A lubricating oil temperature control device has been proposed in which the lubricating oil and the high-temperature lubricating oil stored in the heat storage tank are selectively supplied to the transmission via a strainer that filters the lubricating oil (for example, Patent Document 1). reference.).

  However, when an electric heater, a heat exchanger with exhaust gas, a heat storage tank, or the like is provided, there is a problem that new parts and significant design changes are required.

JP 2010-196788 A

  The present invention has been made in view of the above situation, and an object of the present invention is to automatically add a warm-up promoting function with a minimum improvement to a conventional automatic control manual transmission (ATM). It is to provide a control type manual transmission and a control method thereof.

In order to achieve the above object, an automatic control type manual transmission according to the present invention is an automatic control type manual transmission having a selection drive device for selecting a shift fork to be driven. A lubricating oil supply mechanism for circulating the lubricating oil between the inside of the case and a transmission temperature detecting means; a shift position detecting means for detecting the position of the shift fork; and a control device, the control device comprising: When it is determined that the temperature detected by the transmission temperature detection means is lower than a preset warm-up determination temperature and the shift control detected by the shift position detection means is not performing shift control, by supplying a driving power to drive the select-purpose drive unit and heated by the heat generated by the drive power the Configured to lubricating oil inside the recto drive device to perform control of circulating in the interior of the gear case.

  Note that the case where the shift control is not performed refers to a state in which the shift-up and shift-down control is not performed, that is, a state where the gear position is fixed at an arbitrary gear stage or neutral.

  According to this configuration, when the automatic control type manual transmission is warmed up, the driving power is supplied to the selection driving device. The heat generated by the driving power raises the temperature of the lubricating oil inside the selection driving device. The warmed-up lubricating oil can be circulated inside the gear case (gear box) of the automatic control manual transmission to promote warming up of the automatic control manual transmission.

  Further, it is possible to provide a warm-up promoting mechanism with the minimum addition of components constituting a lubricating oil supply mechanism that circulates lubricating oil between the select driving device and the inside of the gear case. The warm-up acceleration using this warm-up acceleration mechanism can reduce the viscous resistance when the temperature of the lubricating oil is rapidly increased and the lubricating oil is agitated. Can be reduced. Moreover, this warm-up promotion can suppress the deterioration of the shift feeling when the automatic control type manual transmission is cold.

In the above-described automatic control type manual transmission, driving device temperature detecting means for detecting the temperature of the selecting driving device is provided, and the temperature detected by the driving device temperature detecting means is higher than a preset overheat determination temperature. However, if the control is performed to stop the supply of the drive power to the selection drive device, overheating due to the drive of the selection drive device during warm-up can be prevented.
In the above-described automatic control type manual transmission, when the control device supplies driving power for the selection drive device to promote warm-up, a deceleration operation of a vehicle equipped with the automatic control type manual transmission When the control is performed so that the amount of the driving power is increased and all or part of the driving power is covered by the regenerative power of the auxiliary motor generator of the internal combustion engine of the vehicle , It becomes possible to cover all or part of the power consumed by the driving device with the generated power of the alternator increased by ACG regeneration or the like, and the fuel consumption can be suppressed.

A control method for an automatic control type manual transmission according to the present invention for achieving the above-described object includes a selection drive device for selecting a shift fork to be driven, an interior of the selection drive device, and an interior of a gear case. A lubricating oil supply mechanism for circulating lubricating oil between them, a transmission temperature detecting means, a shift position detecting means for detecting the position of the shift fork, and a drive device temperature detection for detecting the temperature of the select drive device And a control method of an automatic control type manual transmission provided with a control device, wherein the temperature detected by the transmission temperature detecting means is lower than a preset warm-up determination temperature and detected by the shift position detecting means If the shift control is determined to not made by the shift position, electric drive that drives the select drive device By supplying a method characterized by circulating inside the lubricant to the inside of the gear case of the select drive apparatus heated by heat generated by the driving power.

  According to this method, when the automatic control type manual transmission is warmed up, the driving power is supplied to the selection driving device, and the heat generated by the driving power raises the temperature of the lubricating oil inside the selection driving device. It is possible to promote the warm-up of the automatic control type manual transmission by circulating the heated lubricating oil inside the automatic control type manual transmission.

  In addition, a warm-up promoting mechanism can be provided with a minimum number of parts constituting a lubricating oil supply mechanism that circulates lubricating oil between the select drive device and the inside of the gear case. As the warm-up is accelerated, the viscous resistance can be reduced when the temperature of the lubricating oil is rapidly increased to stir the lubricating oil, so that the transmission loss during the cold time of the automatically controlled manual transmission can be reduced. Moreover, this warm-up promotion can suppress the deterioration of the shift feeling when the automatic control type manual transmission is cold.

  In the control method of the automatic control type manual transmission described above, when the temperature detected by the drive device temperature detection means is higher than a preset overheat determination temperature, supply of drive power to the select drive device When the operation is stopped, overheating due to the drive of the selection drive device during warm-up can be prevented.

Further, in the control method of the automatic control type manual transmission described above, the deceleration operation of the vehicle equipped with the automatic control type manual transmission when the driving power of the selection drive device is supplied to promote warm-up. A drive device for selection , wherein the amount of the drive power is increased to cover all or part of the drive power with the regenerative power of the auxiliary motor generator of the internal combustion engine of the vehicle. It becomes possible to cover all or part of the electric power consumed by the generator with the generated power of the alternator increased by ACG regeneration or the like, and the fuel consumption can be suppressed.

  According to the automatic control type manual transmission and the control method therefor according to the present invention, it is possible to provide a warm-up promotion mechanism with a minimum number of parts. Since the viscous resistance when the lubricating oil is stirred by raising the temperature of the automatic control manual transmission can be reduced, the transmission loss during cold can be reduced. Moreover, this warm-up promotion can suppress the deterioration of the shift feeling when the automatic control type manual transmission is cold.

1 is a diagram showing a configuration of an automatic control type manual transmission according to a first embodiment of the present invention. It is a figure which shows the structure of the automatic control type manual transmission of 2nd Embodiment which concerns on this invention. It is a figure which shows the flow of the lubricating oil in the drive device for selection concerning this invention. It is a figure which shows an example of the control flow regarding the control method of the automatic control type manual transmission which concerns on this invention. It is a figure which shows the structure of the automatic control type manual transmission of a prior art. It is a figure which shows the other structure of the automatic control type manual transmission of a prior art.

  Hereinafter, an automatic control type manual transmission and a control method thereof according to embodiments of the present invention will be described with reference to the drawings.

  This automatic manual transmission (AMT) is different from the automatic transmission (AT) in that the operating system is automatically controlled (automatic) while the conventional manual transmission (MT) mechanism remains unchanged. The clutch and gear case (gear box) itself have the same structure as the manual transmission (MT).

  As shown in FIG. 1, this automatic control type manual transmission 10 is formed with an input shaft 11, an output shaft 12, and a countershaft 13 inside a gear case (gear box) 10a enclosing the whole. . The axial center direction of the input shaft 11 and the axial center direction of the output shaft 12 are arranged on the same straight line, and the auxiliary shaft 13 is arranged in parallel to the input shaft 11 and the output shaft 12.

The input shaft 11 is provided with a main gear 11a, the output shaft 12 is provided with a main gear 12a, and the sub shaft 13 is provided with a sub gear 13a. When the main gear 11a of the input shaft 11 and the sub gear 13a of the sub shaft 13 are engaged with each other, and another sub gear 13a of the sub shaft 13 is engaged with the main gear 12a of the output shaft 12, the rotation of the input shaft 11 is performed. It is transmitted to the output shaft 12 through the auxiliary shaft 13. Further, the ratio of the rotational speed of the input shaft 11 and the rotational speed of the output shaft, that is, the amplification as a transmission , is determined by the gear ratio of the main gear 11a and the auxiliary gear 13a and the gear ratio of the auxiliary gear 13a and the main gear 12a. The ratio is determined.

  The speed change mechanism unit 17 is provided with a selection driving device 18 for selecting a shift fork to be driven in order to rearrange the gears. As shown in FIG. 3, the selection driving device 18 includes a selection solenoid 18b in a case 18a and a moving member 18c such as a movable iron core that moves in the direction of the arrow depending on whether or not driving power is supplied to the selection solenoid 18b. The link mechanism 18d is connected to the moving member 18c, and the shift lever 18e is moved by the link mechanism 18d. By shifting the shift lever 18e, the shift shaft 16 can be shifted and the shift fork to be driven can be selected. Instead of moving the moving member 18c with the select solenoid 18b, the moving member 18c can be moved with an electric motor. During gear-in, that is, when the gear position is fixed at an arbitrary gear stage, even if power for driving is supplied to the select solenoid 18b, the position of the shift lever 18e does not change because it is blocked. .

  Further, a position sensor 16a which is a shift position detecting means for detecting the shift position of the shift fork is provided. The position sensor 16a is a means for detecting the position of each shift fork, and there are a number corresponding to the number of shift forks. These position sensors 16a determine whether or not a speed change operation is being performed. If the shift position detected by the position sensor 16a, that is, the position position is fixed at an arbitrary gear stage or neutral, it is determined that the shift control is not being performed, and the shift position detected by the position sensor 16a is arbitrary. If it is not fixed to the gear position or neutral, it is determined that the shift control is being performed.

  The lubricating oil supply mechanism supplies the lubricating oil A to the oil pan 14 provided on the lower side inside the gear case 10a and the shafts 11, 12, 13 and the like inside the gear case 10a from the oil pan 14. For this purpose, a lubricating oil pipe 15 and an oil pump 15a are provided.

  Furthermore, in the present invention, a lubricating oil supply mechanism for circulating the lubricating oil A between the selection driving device 18 and the inside of the gear case 10a is provided. That is, the lubricating oil pipe 15 is connected to the selection driving device 18, and the lubricating oil A flows into the selection driving device 18 so that the lubricating oil A is supplied from the selection driving device 18 to the inside of the gear case 10a. Form a road. FIG. 3 shows an example of the passage of the lubricating oil A inside the selection driving device 18.

  While driving power is being supplied to the select solenoid 18b of the select drive device 18, heat is generated by the current flowing through the select solenoid 18b, and the lubricating oil A is heated. And the temperature of the lubricating oil A in the oil pan 14 is increased.

Further, the supply of the lubricating oil A to the shafts 11, 12, 13 and the gears 11a, 12a, 13a, etc. inside the gear case 10a is not limited to the supply from the lubricating oil pipe 15 and the selection driving device 18. The lubricating oil A is supplied from the oil pump 15a to the output shaft 12, or the auxiliary gear 13a scrapes out the lubricating oil A accumulated in the oil pan 14, so that the upper shafts 11, 12, 13 and the gears 11a, It is also performed by supplying lubricating oil to 12a, 13a and the like.

  Furthermore, the first temperature sensor 21 as a transmission temperature detection means, the second temperature sensor 22 as a drive device temperature detection means, and a control device (including a driver) 23 are provided. The first temperature sensor 21 detects the oil temperature Tt of the lubricating oil A in the lubricating oil pipe 15. The second temperature sensor 22 detects the oil temperature Ts of the lubricating oil A in the selection drive device 18. The control device 23 is usually incorporated in a control device that controls the entire vehicle including the engine (internal combustion engine), the automatic control manual transmission 10, and the like.

  In the automatic control type manual transmission 10 according to the first embodiment, as a warm-up promoting mechanism, an addition to the automatic control type manual transmission of the prior art is an extended portion of the lubricating oil pipe 15 connected to the selection drive unit 18. And a configuration in which the lubricant A is supplied into the gear case 10a from the selection driving device 18, a first temperature sensor 21 as a transmission temperature detecting means, and a second temperature sensor 22 as a driving device temperature detecting means, The control device 23 is obtained. A shift position sensor 16a, a control circuit, or the like provided in a conventional automatic control type manual transmission may be used.

  Next, an automatic control type manual transmission 10A according to a second embodiment shown in FIG. 2 will be described. In this automatic control type manual transmission 10A, a current detection means 22A provided for the power source of the selection driving device 18 is used. In this case, since the resistance value against energization increases as the temperature of the solenoid of the selection driving device 18 and the copper wire in the motor increases, the overheating of the selection driving device 18 is performed using the relationship that the current decreases. Can be detected.

  The automatic control type manual transmission 10A of the second embodiment is otherwise the same as the automatic control type manual transmission 10 of the first embodiment. In the automatic control type manual transmission 10A according to the second embodiment, as a warm-up promoting mechanism, an addition to the automatic control type manual transmission of the prior art is an extended portion of the lubricating oil pipe 15 connected to the selection drive unit 18. And a configuration in which the lubricant A is supplied from the select driving device 18 into the gear case 10a, a first temperature sensor 21 that is a transmission temperature detecting means, a current detecting means 22A, and a control device 23.

A control method in the automatic control type manual transmission 10, 10A having the above configuration will be described. This control method is performed according to the control flow illustrated in FIG. The control flow of FIG. 4 is called from the advanced control flow when the engine is started, and starts from the control flow of FIG. 4, that is, executes steps S11 to S14 or steps S11 to S15. After returning to the advanced control flow, the control flow shown in FIG. 4 is repeated after being called from the advanced control flow.

  When the control flow in FIG. 4 starts, it is determined in step S11 whether the transmission temperature Tt detected by the first temperature sensor 21 serving as transmission temperature detection means is lower than a preset warm-up determination temperature Th. Determine. If it is determined in step S11 that the transmission temperature Tt is lower than the warm-up determination temperature Th (YES), the process goes to step S12. If the transmission temperature Tt is equal to or higher than the warm-up determination temperature Th (NO), the process goes to step S15. Then, the driving of the selection driving device 18 is stopped and the process returns. The warm-up determination temperature Th is set to a temperature in the range of 40 ° C. to 80 ° C., for example, 60 ° C.

  In step S12, it is determined whether or not the shift position detected by the position sensor 16a, which is a shift position detecting means, is under shift control. If it is determined in step S12 that the shift control is not being performed (NO), the process goes to step S13. If the shift control is being performed (YES), the process goes to step S15, and the drive of the selection drive unit 18 is stopped and the process returns.

  Note that the case where the shift control is not being performed is a state in which the shift-up and shift-down control is not performed, that is, a state where the gear position is fixed at an arbitrary gear stage or neutral. On the contrary, the case where the shift control is being performed is a state in which the upshift and the downshift control are being performed, that is, a state where the gear position is not fixed to an arbitrary gear stage or neutral.

  In step S13, it is determined whether or not the drive device temperature Ts detected by the second temperature sensor 22 as drive device temperature detection means is equal to or lower than a preset overheat determination temperature (overheat determination temperature) To. If it is determined in step S13 that the drive device temperature Ts is equal to or lower than the overheat determination temperature To (YES), the process proceeds to step S14 to drive the selection drive device 18, that is, the drive power is supplied and the process returns. If the drive device temperature Ts exceeds the overheat determination temperature To (NO), the process goes to step S15 to stop the drive of the selection drive device 18 and return. The overheat determination temperature To is set to a temperature in the range of 90 ° C. to 120 ° C., for example, 100 ° C.

  With this control, the temperature Tt detected by the transmission temperature detection means 21 is lower than the preset warm-up determination temperature Th, and the shift control is not performed by the shift position detected by the shift position detection means 22. When it is determined, it is possible to perform control for supplying driving power for driving the select driving device 18.

  It should be noted that while this gear shift control is not being performed and the gear-in is in progress, the gear shift position does not change even if the selection driving device 18 is driven, so that a gear shift failure such as gear disengagement or double meshing may not occur. Absent.

  In this state, if the driving power for driving the selection driving device 18 is supplied and the current is continuously supplied to the selection solenoid 18b, the selection solenoid 18b is in an extended state, but the shift position is not neutral. In this case, since the movement of the lever 18e of the select driving device 18 is restricted, a force is generated but the link mechanism 18d does not move. In the case of an electric motor, torque is continuously generated on either the expansion / contraction side.

Then, heat is generated by applying electricity to the coil of the select solenoid 18b (or in the electric motor). The heating value W is W = V ² / R, where V is the applied voltage and R is the coil resistance. The heat of this coil is transferred to the lubricating oil A flowing to the surroundings through a bobbin or the like wound with an insulated copper wire. In the case where there are a plurality of select driving devices 18, it is preferable to promote warm-up by applying electricity to the coils of all the select solenoids 18b (or in the electric motor) if the supplied power permits.

Further, when the temperature Ts detected by the drive unit temperature detecting means 22 is higher than the preset overheat judgment temperature To is to prevent overheating of the selection drive unit 18, the driving of the selection drive unit 18 Control to stop can be performed.

  According to the above-described automatic control type manual transmission 10, 10A and its control method, the warm-up promoting mechanism 20, 20A can be provided with the addition of a minimum number of parts, and the warm-up promoting mechanism 20, 20A using the warm-up promoting mechanism 20, 20A can be provided. By speeding up the machine, the temperature of the lubricating oil A is quickly raised and supplied into the gear case 10a, and the oil temperature of the lubricating oil A that lubricates the main gears 11a, 12a, the auxiliary gear 13a, and the like is quickly increased. Since the viscous resistance when the lubricating oil A stored in the pan 14 is agitated can be reduced, the transmission loss when the automatic control type manual transmission 10, 10A is cold can be reduced. Further, by reducing the stirring resistance by promoting the warming-up, it is possible to suppress the deterioration of the shift feeling when the automatic control type manual transmission 10, 10A is cold.

  In the warm-up promotion, a relatively large amount of power is consumed as drive power supplied to the select drive device 18 to raise the temperature of the lubricating oil A. Therefore, even during warm-up, the automatically controlled manual transmission 10, During the acceleration operation of the vehicle equipped with 10A, the drive power supplied to the select drive device 18 is decreased to weaken the function of the warm-up promotion mechanism, or the drive power is stopped and the function of the warm-up promotion mechanism is temporarily stopped. It is preferable to stop automatically.

  Further, during the deceleration operation of the vehicle, the driving power supplied to the select driving device 18 is increased to make the warm-up acceleration mechanism work strongly, or the power for ACG regeneration is used for the driving power. Is preferred.

  By using the energy of ACG regeneration, the energy of the warm-up promoting mechanism can be obtained from the energy that the vehicle is wasted, and thereby the adverse effect on fuel consumption can be reduced. In other words, in ACG regeneration, during deceleration, part of the kinetic energy of the vehicle that becomes waste heat from the brakes during normal braking or engine braking that uses the pumping loss of the engine is converted into electricity by the alternator. By using the electric power generated by the ACG regeneration as part of the electric power of the warm-up promoting mechanism, energy loss due to deceleration can be suppressed.

  The automatically controlled manual transmission and the control method thereof according to the present invention can be provided with a warm-up promotion mechanism with a minimum number of parts added, and the temperature of the lubricating oil can be quickly adjusted by the warm-up promotion using this warm-up promotion mechanism. Since the viscous resistance when stirring the lubricating oil can be reduced, the transmission loss when the automatic control manual transmission is cold is reduced and the shift feeling when the automatic control manual transmission is cold is reduced. Therefore, it can be applied to vehicles such as trucks and buses.

10, 10A, 10X, 10Y Automatic control manual transmission (AMT)
10a Gear case (gearbox)
11 Input shaft 11a Main gear 12 Output shaft 12a Main gear 13 Sub shaft 13a Sub gear 14 Oil pan 15 Lubricating oil piping 15a Oil pump 16 Shift shaft 16a Position sensor (shift position detecting means)
17 Transmission mechanism 18 Selection drive device 20, 20A Warm-up acceleration mechanism 21 First temperature sensor (transmission temperature detection means)
22 Second temperature sensor (drive device temperature detection means)
22A Current detection means 23 Controller A Lubricating oil G Exhaust gas Th Warm-up determination temperature To Overheat determination temperature Ts Oil temperature of lubricating oil (drive device temperature)
Tt Lubricating oil temperature (transmission temperature)

Claims (6)

In an automatically controlled manual transmission equipped with a selection drive for selecting a shift fork to be driven,
Provided with a lubricating oil supply mechanism for circulating lubricating oil between the inside of the select driving device and the inside of the gear case, a transmission temperature detecting means, a shift position detecting means for detecting the position of the shift fork, Equipped with a control device,
The control device determines that the temperature detected by the transmission temperature detecting means is lower than a preset warm-up determination temperature, and that the shift control is not performed by the shift position detected by the shift position detecting means. Control for supplying drive power for driving the select drive device and circulating the lubricating oil inside the select drive device heated by the heat generated by the drive power inside the gear case. An automatic control type manual transmission characterized by   Drive device temperature detection means for detecting the temperature of the drive device for selection, and when the temperature detected by the drive device temperature detection means is higher than a preset overheat determination temperature, 2. The automatic control type manual transmission according to claim 1, wherein control for stopping the supply of driving power to the selection driving device is performed. When the control device is supplying drive power for the select drive device to promote warm-up, the amount of power for the drive power during deceleration operation of a vehicle equipped with the automatic control manual transmission The automatic control according to claim 1, wherein control is performed to cover all or part of the driving power with regenerative power of an auxiliary motor generator of an internal combustion engine of the vehicle. Manual transmission. A selection driving device for selecting a shift fork to be driven, a lubricating oil supply mechanism for circulating lubricating oil between the selection driving device and the gear case, transmission temperature detection means, and the shift fork In the control method of the automatic control type manual transmission provided with the shift position detecting means for detecting the position of the driving device, the driving device temperature detecting means for detecting the temperature of the driving device for selection, and the control device, the transmission temperature detecting means Drive for driving the selection drive device when it is determined that the detected temperature is lower than a preset warm-up determination temperature and the shift position detected by the shift position detecting means is not controlled. supplies use power, the internal lubricant the select drive device was heated by the heat generated by said driving power Giake The method of automatically controlled manual transmissions, wherein a circulating therein. 5. The supply of drive power to the select drive device is stopped when the temperature detected by the drive device temperature detection means becomes higher than a preset overheat determination temperature. Control method of automatic control manual transmission . While supplying driving power for the select driving device to promote warm-up, the amount of power for the driving power is increased during deceleration operation of a vehicle equipped with the automatic control manual transmission , 6. The control method for an automatically controlled manual transmission according to claim 4 , wherein all or part of the driving power is covered by regenerative power of an auxiliary motor generator of an internal combustion engine of the vehicle .

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