WO2011111434A1 - 自動変速機の油圧制御装置 - Google Patents
自動変速機の油圧制御装置 Download PDFInfo
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- WO2011111434A1 WO2011111434A1 PCT/JP2011/051793 JP2011051793W WO2011111434A1 WO 2011111434 A1 WO2011111434 A1 WO 2011111434A1 JP 2011051793 W JP2011051793 W JP 2011051793W WO 2011111434 A1 WO2011111434 A1 WO 2011111434A1
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- Prior art keywords
- pressure
- oil passage
- range
- valve
- hydraulic
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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
- F16H61/04—Smoothing ratio shift
- F16H61/0437—Smoothing ratio shift by using electrical signals
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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
- F16H61/02—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 characterised by the signals used
- F16H61/0202—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 characterised by the signals used the signals being electric
- F16H61/0204—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0206—Layout of electro-hydraulic control circuits, e.g. arrangement of valves
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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
- F16H61/04—Smoothing ratio shift
- F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
- F16H61/061—Smoothing ratio shift by controlling rate of change of fluid pressure 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
- 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
- F16H61/04—Smoothing ratio shift
- F16H2061/0481—Smoothing ratio shift during range shift from drive (D) or reverse (R) to neutral (N)
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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
- F16H61/04—Smoothing ratio shift
- F16H2061/0485—Smoothing ratio shift during range shift from neutral (N) to reverse (R)
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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
- F16H61/04—Smoothing ratio shift
- F16H2061/0488—Smoothing ratio shift during range shift from neutral (N) to drive (D)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20012—Multiple controlled elements
- Y10T74/20018—Transmission control
- Y10T74/20024—Fluid actuator
Definitions
- the present invention relates to a hydraulic control device for an automatic transmission mounted on a vehicle or the like, and more specifically, a hydraulic control for an automatic transmission that can switch an oil path for discharging hydraulic pressure from a hydraulic servo of a friction engagement element. Relates to the device.
- each shift stage is formed by controlling the rotation state of each rotation element of the transmission gear mechanism by the engagement state of a plurality of friction engagement elements.
- the engagement pressure of the plurality of friction engagement elements is controlled by electrically adjusting the engagement pressure using a solenoid valve and supplying the pressure to the hydraulic servo of each friction engagement element.
- the present invention provides a hydraulic control device for an automatic transmission that is less likely to come off when the RN is switched with respect to the discharge of the hydraulic pressure from the second hydraulic servo of the second friction engagement element. It is intended to provide.
- the present invention includes a first hydraulic servo (41) of a first friction engagement element (C-3) supplied with oil in a reverse range (R) and a forward range (D), and the reverse And a second hydraulic servo (42) of a second friction engagement element (B-2) to which oil is supplied in a range (R) and a neutral range (N), and a hydraulic control device for an automatic transmission (3)
- a manual valve (MV) having an input port (MVb) to which line pressure (P L ) is input and an output port (MVd) for outputting the input line pressure (P L ) as a reverse range pressure (P REV )
- a linear solenoid (SLC3) that regulates the line pressure (P L ) and outputs it as a working hydraulic pressure (P SLC3 );
- a first switching unit (21, S1) for switching and outputting the hydraulic pressure supplied from the linear solenoid (SLC3) to the first hydraulic servo (41) and the second hydraulic servo (42
- the second switching unit (22, S2) and the third switching unit (22, S2) include a single switching valve (22) and the switching valve ( 22) It is characterized by comprising a solenoid valve (S2) for switching.
- the third switching unit communicates the second hydraulic servo and the discharge delay oil passage so that the manual valve is in the forward range or the reverse range.
- the hydraulic pressure of the second hydraulic servo is discharged through the delay oil passage.
- the hydraulic pressure can be maintained slowly by the second hydraulic servo, and in the forward range where there is a risk of oil leakage if held, it can be quickly extracted via the reverse range pressure oil passage. it can. That is, the discharge delay oil passage and the reverse range pressure oil passage can be used properly according to the switching state of the manual valve.
- the degree of freedom of the diameter of the orifice used in the delay portion is increased, so that the engagement of the friction engagement element at the time of switching between the reverse range, the neutral range, and the reverse range (RNR) is achieved. It is possible to smoothly shift to the engagement of the second friction engagement element when reducing the shock or switching to neutral.
- movement of the hydraulic control apparatus of the automatic transmission which concerns on 1st Embodiment. 3 is a time chart for explaining the operation at the time of RND switching of the hydraulic control device for the automatic transmission according to the first embodiment.
- 4 is a time chart for explaining the operation at the time of RN—R switching of the hydraulic control device for the automatic transmission according to the first embodiment.
- an automatic transmission 3 suitable for use in, for example, an FF type (front engine, front drive) vehicle has an input shaft 8 of the automatic transmission 3 that can be connected to an engine (not shown).
- the torque converter 4 and the automatic transmission mechanism 5 are provided around the axial direction of the input shaft 8.
- the torque converter 4 includes a pump impeller 4a connected to the input shaft 8 of the automatic transmission 3, and a turbine runner 4b to which the rotation of the pump impeller 4a is transmitted via a working fluid.
- the runner 4 b is connected to the input shaft 10 of the automatic transmission mechanism 5 disposed coaxially with the input shaft 8. Further, the torque converter 4 is provided with a lock-up clutch 7, and when the lock-up clutch 7 is engaged, the rotation of the input shaft 8 of the automatic transmission 3 causes the input shaft of the automatic transmission mechanism 5 to rotate. 10 is transmitted directly.
- the automatic transmission mechanism 5 includes a planetary gear SP and a planetary gear unit PU on the input shaft 10.
- the planetary gear SP is a so-called single pinion planetary gear that includes a sun gear S1, a carrier CR1, and a ring gear R1, and has a pinion P1 that meshes with the sun gear S1 and the ring gear R1.
- the planetary gear unit PU has a sun gear S2, a sun gear S3, a carrier CR2, and a ring gear R2 as four rotating elements.
- the long gearion PL that meshes with the sun gear S2 and the ring gear R2 and the sun gear S3.
- This is a so-called Ravigneaux type planetary gear that has meshing short pinions PS that mesh with each other.
- the sun gear S1 of the planetary gear SP is connected to a boss (not shown) that is integrally fixed to the transmission case 9, and the rotation is fixed.
- the ring gear R1 is in the same rotation as the rotation of the input shaft 10 (hereinafter referred to as “input rotation”). Further, the carrier CR1 is decelerated by the input rotation being decelerated by the fixed sun gear S1 and the input rotating ring gear R1, and the clutch C-1 (first friction engagement element) and the clutch C- 3 (third friction engagement element).
- the sun gear S2 of the planetary gear unit PU is connected to a brake B-1 formed of a band brake and can be fixed to the transmission case 9, and is connected to the clutch C-3.
- the sun gear S3 is connected to the clutch C-1, so that the decelerated rotation of the carrier CR1 can be input.
- the carrier CR2 is connected to a clutch C-2 (second friction engagement element) to which the rotation of the input shaft 10 is input, and the input rotation can be input via the clutch C-2. Further, it is connected to the one-way clutch F-1 and the brake B-2, and the rotation in one direction with respect to the transmission case 9 is restricted via the one-way clutch F-1, and via the brake B-2. The rotation can be fixed.
- the ring gear R2 is connected to a counter gear 11, and the counter gear 11 is connected to a drive wheel via a counter shaft and a differential device (not shown).
- hydraulic control device 1 1 for an automatic transmission according to the present invention.
- line pressure, secondary pressure, modulator pressure, the generation portion of the range pressure or the like are the same as those of a general automatic transmission hydraulic control device, and are well-known and will be described briefly.
- the hydraulic control device 1 1 may, for example, the manual valve MV, which will be described later oil pump which is not shown, the primary regulator valve comprises a secondary regulator valve, a solenoid modulator valve, and a linear solenoid (linear solenoid valves), etc.
- the primary regulator valve comprises a secondary regulator valve, a solenoid modulator valve, and a linear solenoid (linear solenoid valves), etc.
- the oil pump that is rotationally connected to the pump impeller 4a of the torque converter 4 is driven in conjunction with the rotation of the engine, so that the oil from the oil pan (not shown) passes through the strainer. Hydraulic pressure is generated by sucking up the air.
- the line pressure P L is the manual valve (range switching valve) MV, the solenoid modulator valve, and more information is supplied to the linear solenoid valve SLC3 to be described later.
- the line pressure P L supplied to the solenoid modulator valve is regulated to a modulator pressure P MOD that becomes a substantially constant pressure by the valve, and this modulator pressure P MOD is adjusted to the linear solenoid valve, which will be described in detail later. It is supplied as the original pressure of the solenoid valves S1, S2, etc.
- the pressure discharged from the primary regulator valve is adjusted to the secondary pressure PSEC while being further discharged and adjusted, for example, by the secondary regulator valve, and this secondary pressure PSEC is supplied to, for example, a lubricating oil passage or an oil cooler. And also supplied to the torque converter 4 and used to control the lock-up clutch 7.
- the manual valve MV described later in detail has a spool MVp that is mechanically (or electrically) driven by a shift lever provided in a driver's seat (not shown).
- the spool MVp position shift range selected by the shift lever e.g. P, R, N, D
- the shift lever e.g. P, R, N, D
- the hydraulic control device 1 1 includes a manual valve MV, and the first hydraulic servo (hydraulic servo) 41 of the first frictional engagement element (clutch) C-3, the second frictional engagement element (brake) of B-2 a second hydraulic servo (hydraulic servo) 42, a linear solenoid (linear solenoid valve) SLC3 output as hydraulic pressure (engagement pressure) P SLC3 the line pressure P L regulated pressure by, C3 relay valve as a first switching unit 21 and solenoid valve S1, reverse range pressure oil passage (oil passage) g1, B2 relay valve 22 and solenoid valve S2 as the second switching portion, and discharge delay oil passage i (oil passages e, g4, g5, g6). , A part of the oil passage g2 and the oil passage g1), and a B2 relay valve 22 and a solenoid valve S2 as a third switching portion.
- the first switching unit includes the C3 relay valve 21 and the solenoid valve S1, and the hydraulic pressure (engagement pressure) P SLC3 supplied from the linear solenoid valve SLC3 is changed to the hydraulic pressure.
- the servo 41 and the hydraulic servo 42 are switched to be supplied.
- the discharge delay oil passage i is an oil passage connected to the drain port MVq of the manual valve MV through the delay portion 30, and is one of the oil passages e, g4, g5, g6, the oil passage g2, and the oil passage g1. Has a part. Further, in the circuit diagram of FIG.
- the second switching unit and the third switching unit are integrally configured, and have a second clutch apply relay valve 22 and a solenoid valve S1, and the manual valve MV includes
- the reverse range pressure oil path (oil path) g1 connected to supply the R range pressure P REV and the operating hydraulic pressure (engagement pressure) P SLC3 or the R range pressure P REV are switched to the hydraulic servo 42 and supplied.
- the reverse range pressure oil path (oil path) g1 and the discharge delay oil path i are connected, and the hydraulic servo 42 is switched between the reverse range pressure oil path (oil path) g1 and the discharge delay oil path i for communication. It is something to be made.
- the manual valve MV is a spool that is switched according to the parking range (P range), reverse range (R range), neutral range (N range), forward range (D range), etc., which are shift ranges selected by the shift lever.
- the manual valve MV when the D range based on the operation of the shift lever is selected, the basis of the position of the spool MVp forward with the line pressure line pressure input port MVa the P L is input range pressure output port (D-range communication and a pressure output port) MVc, the D range pressure output port MVc the line pressure P L is outputted as a forward range pressure (D range pressure) P D.
- the line pressure input port MVa and the reverse range pressure output port (R range pressure output port) MVd communicate with each other based on the position of the spool MVp.
- the line pressure P L is output from the output port MVd as a reverse range pressure (R range pressure P REV ).
- the line pressure input port MVa, the D range pressure output port MVc, and the R range pressure output port MVd are blocked by the spool MVp. together, they D range pressure output port MVc are communicated with the drain port, not shown, also, R-range pressure output port MVd are communicated with the drain port MVQ, i.e. D-range pressure P D and the R range pressure P REV is drained ( Discharged) is in a non-output state.
- the linear solenoid valve SLC3 is a normally closed type valve which is in the non-output state when de-energized, the input port SLC3a of the line pressure P L is input via the oil passage a, the line pressure P L dimming pressure
- the hydraulic servos 41 and 42 have an output port SLC3b that outputs a control pressure (working hydraulic pressure) P SLC3 as an engagement pressure P C3 and an engagement pressure P B2 . That is, the linear solenoid valve SLC1 shuts off the input port SLC3a and the output port SLC3b when not energized and enters a non-output state.
- the output port SLC3b of the linear solenoid valve SLC3 is connected to an input port 21c of a C3 relay valve 21 described later via an oil passage b1 and an orifice 31.
- the linear solenoid valve SLC3 has an input port SLC3c.
- the input port SLC3c is connected to an oil passage b2 branched from the oil passage b1, and is drained when the linear solenoid valve SLC3 is not energized. It communicates with the port SLC3d, and the communication is cut off when energized.
- the solenoid valve S1 is a normally closed type valve that is in a non-output state when not energized, and is connected to an input port S1a to which the modulator pressure PMOD is input via the oil passages c1 and c2, and when energized (ie, when ON). And an output port S1b for outputting the modulator pressure P MOD as the signal pressure P S1 substantially as it is.
- the output port S1b is connected to an input port 22b of a B2 relay valve 22, which will be described in detail later, through an oil passage d1.
- the solenoid valve S2 like the solenoid valve S1, is a normally closed type valve that is in a non-output state when not energized, and an input port S2a to which the modulator pressure PMOD is input via the oil passages c1 and c3; It has an output port S2b that outputs the modulator pressure PMOD almost directly as the signal pressure PS2 when energized (that is, when ON).
- the output port S2b is connected to an oil chamber 22r of a B2 relay valve, which will be described in detail later, through an oil passage e1.
- the C3 relay valve 21 has a spool 21p and a spring 21s that urges the spool 21p upward (left half position side) in the figure, and an oil chamber 21r1 is provided at the upper end side of the spool 21p and a lower end thereof. It has an oil chamber 21r2 on the side, and further has an input port 21a, an output port 21b, an input port 21c, an output port 21d, and a drain port 21EX in order from the upper side in the figure.
- the C3 relay valve 21 is disconnected from the input port 21a and the output port 21b by the spool 21p switched to the right half position (hereinafter referred to as "corresponding to the right half position of the spool 21p").
- the port 21c and the output port 21b are communicated, the input port 21c and the output port 21d are blocked, and the output port 21d and the drain port 21EX are communicated.
- the input port 21a and the output port 21b are communicated with each other and the input port 21c and the output port 21b are cut off, corresponding to the left half position of the spool 21p.
- the input port 21c and the output port 21d are communicated with each other, and the output port 21d and the drain port 21EX are blocked.
- the B2 relay valve 22 has a spool 22p, a spring 22s that urges the spool 22p upward (left half position side) in the figure, and an oil chamber 22r on the upper end side of the spool 22p. Furthermore, in order from the upper side in the figure, there are a drain port 22EX, an output port 22a, an input port 22b, an input port 22c, an output port 22d, and an input port 22e.
- the drain port 22EX and the output port 22a are blocked, the input port 22b and the output port 22a are communicated, and the input port 22c and the output port 22d are connected.
- the input port 22e and the output port 22d are configured to be blocked and communicated.
- the drain port 22EX and the output port 22a are communicated with each other and the input port 22b and the output port 22a are cut off in correspondence with the left half position of the spool 22p.
- the input port 22c and the output port 22d are communicated with each other, and the input port 22e and the output port 22d are blocked.
- the output port SLC3b of the linear solenoid valve SLC3 is connected to the input port 21c of the C3 relay valve 21 via the oil passage b1 and the orifice 31.
- the output port connected to the input port 21c differs between the left half position and the right half position of the spool 21p. That is, the input port 21c communicates with the output port 21d corresponding to the left half position of the former spool 21p, and is further connected to the hydraulic servo 41 via the oil passage b3.
- the oil passage b4 is branched from the oil passage b3, and the oil passage b4 is connected to the oil chamber 21r2 of the C3 relay valve 21.
- the input port 21c communicates with the output port 21b corresponding to the right half position of the spool 21p, and is further connected to the input port 22e of the B2 relay valve 22 via the oil passage e.
- the input port 22e communicates with the output port 22d corresponding to the right half position of the spool 22p, and is further connected to the hydraulic servo 42 via the oil passage f.
- the linear solenoid valve SLC3 communicates with the hydraulic servo 41 via the C3 relay valve 21 when the spool 21p of the C3 relay valve 21 is switched to the left half position, and the spool 21p is in the right half position.
- the hydraulic servo 42 is communicated.
- the C3 relay valve 21 supplies the engagement pressure P SLC3 output from the linear solenoid valve SLC3 to the hydraulic servo 41 when the spool 21p is switched to the left half position.
- the hydraulic servo 42 can be supplied via the B2 relay valve 22 when switched to the right half position. That is, the C3 relay valve 21 is configured to selectively switch the supply destination of the engagement pressure output from the linear solenoid valve SLC3 between the hydraulic servo 41 and the hydraulic servo 42.
- the manual valve MV has an R range pressure output port MVd connected to the input port 22c of the B2 relay valve 22 via an oil passage g1, and the input port 22c corresponds to the left half position of the spool 22p. It communicates with the output port 22d, and is further connected to the hydraulic servo 42 via the oil passage f.
- the R range pressure output port MVd is connected to the input port 21a of the C3 relay valve 21 via the oil passage g2, the orifice 32, the check valve 51, the oil passage g3, and the oil passage g4 branched from the oil passage g1.
- the input port 21a communicates with the output port 21b corresponding to the left half position of the spool 21p, and is further connected to the input port 22e of the B2 relay valve 22 via the oil passage e.
- the input port 22e is connected to the hydraulic servo 42 through the output port 22d communicating with the right half position of the spool 22p and the oil passage f.
- the oil passage e is an oil passage used when the engagement pressure P SLC3 output from the linear solenoid valve SLC3 is supplied from the C3 relay valve 21 to the B2 relay valve 22.
- the oil passage e corresponds to the right half position of the spool 21p of the C3 relay valve 21 as an oil passage that can supply the engagement pressure P SLC3 from the C3 relay valve 21 to the B2 relay valve 22, and C3 corresponding to the left half position of the spool 21p of the relay valve 21, it is also used in both the oil passage capable of feeding the C3 relay valve 21 to the B2 relay valve 22 to R range pressure P REV from the manual valve MV.
- the oil passage g5 branched from the oil passage g3 is connected to the R range pressure output port MVd of the manual valve MV via the orifice 33, the orifice 34, the check valve 52, the oil passage g6, and part of the oil passages g2 and g1.
- a discharge delay oil passage i connected to the R range pressure output port MVd of the manual valve MV is constituted by the oil passages e, g4, g5, g6, g2 and a part of the oil passage g1. ing.
- the discharge delay oil passage i communicates with the drain port MVq through the R range pressure output port MVd in the N range and D range of the manual valve MV. On the other hand, in the R range, this communication is cut off, and the R range pressure output port MVd and the input port MVa are communicated.
- the orifices 33 and 34 and the check valves 51 and 52 constitute a delay portion 30, and the delay portion 30 outputs an R range pressure from the discharge delay oil passage i.
- the discharge of the hydraulic pressure discharged from the drain port MVq via the port MVd is delayed.
- the R range pressure output port MVd is connected to the hydraulic servo 42 via the B2 relay valve 22 when the spool 22p of the B2 relay valve 22 is switched to the left half position.
- the hydraulic servo 42 is connected to the hydraulic servo 42 via the C3 relay valve 21 and the B2 relay valve 22. Communicated.
- the B2 relay valve 22 uses the B2 relay valve 22 as a reference, the B2 relay valve 22 selectively switches between the input port 22c and the input port 22e, and outputs the pressure (R range pressure P REV ) input to one of the output ports. It is configured so that it can be output from 22d and supplied to the hydraulic servo 42.
- the C3 relay valve 21 and the B2 relay valve 22 are switched by the solenoid valve S1 and the solenoid valve S2.
- the oil passage e1 is connected to the output port S2b, and the oil passage e1 is connected to the oil chamber 22r of the B2 relay valve 22.
- the solenoid valve S1 is connected to the output port S1b of the oil passage d1, and the oil passage d1 is connected to the input port 22b of the B2 relay valve 22.
- the input port 22b communicates with the output port 22a corresponding to the right half position of the spool 22p, and is further connected to the oil chamber 21r1 of the C3 relay valve 21 via the oil passage h.
- the solenoid valve S2 is, ON times, via the oil passage c1, c3, and outputs the modulator pressure P MOD input to the input port S2a from substantially directly output port S2b, via the oil passage e1, the signal pressure P S2 is input to the oil chamber 22r of the B2 relay valve 22.
- the spool 22p is switched to the right half position against the urging force of the spring 22s by the input of the signal pressure PS2 .
- the B2 relay valve 22 is switched to the left half position by the urging force of the spring 22s.
- the solenoid valve S1 is, ON times, via the oil passage c1, c2, and outputs the modulator pressure P MOD input to the input port S1a from substantially directly output port S 1 b, through the oil passage d1, the signal pressure P Input to the input port 22b of the B2 relay valve 22 as S1 .
- This signal pressure PS1 corresponds to the left half position of the spool 22p of the B2 relay valve 22, and is output to the oil chamber 21r1 of the C3 relay valve 21 via the output port 22a and the oil passage h communicated with the input port 22b. Entered. In the C3 relay valve 21, the spool 21p is switched to the right half position against the urging force of the spring 21s by the input of the signal pressure PS1 .
- the hydraulic control of the hydraulic control device 1 1 is started.
- the selected position of the shift lever is, for example, the P range or the N range, for example, when the engine is started, hydraulic pressure is generated by rotation of an oil pump (not shown) based on engine rotation.
- the primary regulator valve and the solenoid modulator valve as described above, are respectively pressure regulating output to the line pressure P L and a modulator pressure P MOD, an input port MVa of the manual valve MV, the input of the linear solenoid valve SLC3 via the oil passage a
- the line pressure P L is input to the port SLC3a
- the modulator pressure P MOD is input to the input ports S1a and S2a of the solenoid valves S1 and S2 via the oil passages c1, c2, and c3.
- the D range pressure output port MVc of the manual valve MV is connected to another linear solenoid valve (not shown) via an oil path (not shown).
- pressure P D is output.
- the speed is changed from the first forward speed (1ST) to the forward speed (6TH) one after another.
- the manual valve MV is turned on. between the D-range pressure output port MVc the input port MVa is communicated with the drain port (not shown) while being blocked, ie the forward range pressure P D is drained.
- step S11 In the R range (time 0 to time t1 in FIG. 5) before the start of switching at the time of RN switching (step S11, hereinafter simply referred to as “S11”), the solenoid valve S1 is OFF and the solenoid valve S2 is turned oN, as shown in FIG. 3, B2 relay valve 22, since the signal pressure P S2 from the solenoid valve S2 is inputted to the oil chamber 22r, it is switched to the right half position. Meanwhile, C3 relay valve 21, since the signal pressure P s1 from the solenoid valve S1 is not input to the oil chamber 21R1, is switched to the left half position.
- the engagement pressure P SLC3 of the linear solenoid valve SLC3 is, the oil passage b1, C3 relay valve 21, is supplied to the hydraulic servo 41 via the oil passage b3.
- the R range pressure PREV is supplied from the R range pressure output port MVd to the hydraulic servo 42 via the oil passage g1, the C3 relay valve 21, the oil passage e, the B2 relay valve 22, and the oil passage f.
- the R range (REV) both the clutch C-3 and the brake B-2 are engaged.
- the hydraulic pressure is gradually increased from the clutch C-3 while adjusting the discharge amount from the drain port SLC3d by the control of the linear solenoid valve SLC3 (S12). Pull out.
- the engagement pressure P C3 of the clutch C3 in this case is initially relatively rapidly thereafter slowly gradually decreases.
- the engagement pressure P B2 of the brake B-2 is gradually reduced with a gentle curve as shown by the thin solid line in FIG. 5 (S13).
- the engagement pressure P B2 of the brake B-2 includes the oil passage f, the output port 22d of the B2 relay valve 22, the input port 22e, the oil passage e, the output port 21b of the C3 relay valve 21, the input port 21a, the oil passage.
- Part of the oil passages e, g4, g5, and g6 and the oil passages g2 and g1 constitute the discharge delay oil passage i as described above.
- the engagement pressure P B2 of the brake B-2 is discharged from the drain port MVq of the manual valve MV via the oil passage f and the discharge delay oil passage i with respect to the oil passage. It is discharged in a state where the discharge speed is lowered by the orifices 33, 34, etc. of the delay part 30 provided in i.
- a drop in hydraulic pressure when the engagement pressure P B2 of the brake B-2 is discharged via the oil passage g1 without providing the discharge delay oil passage i is indicated by a wavy line in the figure.
- the RN switching is the same as the above-described RND switching, that is, S11 to S17 in the flowchart of FIG. Omitted.
- step S17 of the flowchart of FIG. 4 in the case of NR switching, at time t3, the solenoid valve S1 is turned off (S30), the B2 relay valve 22 has the spool 22p in the left half position, and the C3 relay valve 21 has the spool 21p. Left half position.
- the brake B2 is, R-range pressure output port MVd from R range pressure P REV of the manual valve MV is, the oil passage g1, B2 relay valve 22, since it is supplied through the oil passage f, the engagement The pressure P B2 is increased rapidly.
- the first switching unit 63 includes a first switching valve 65 and a first solenoid valve 64 that switches the signal pressure depending on whether or not a signal pressure is output.
- the second switching unit 66 includes a second switching valve 68 and a signal pressure.
- the third switching unit 70 has a third switching valve 72 and a third solenoid valve 71 that switches it according to the presence or absence of signal pressure. Yes.
- the first switching valve 65 is connected to the linear solenoid valve 62 via the oil passage k1, is connected to the hydraulic servo 75 via the oil passage k2, and further connected to the second switching valve 68 via the oil passage k3. It is connected.
- the second switching valve 68 is connected to the first switching valve 65 through the oil passage k3, is connected to the third switching valve 72 through the oil passage k4, and is connected to the hydraulic servo 76 through the oil passage k5.
- the third switching valve 72 is connected to the second switching valve 68 via the oil passage k4, is connected to the manual shift valve 61 via the R range pressure oil passage k6, and an orifice 77 is disposed in the middle.
- the drain delay oil passage k7 is connected to the drain port EX.
- the hydraulic control device 1 2 of the above configuration the engagement pressure that is input via the oil path k1 from the linear solenoid valve 62, by switching the first switching valve 65 according to the first solenoid valve 64, the oil passage k2 oil passage The output can be switched to k3.
- the engagement pressure output to the former oil passage k2 is supplied to the hydraulic servo 75, while the engagement pressure output to the latter oil passage k3 is input to the second switching valve 68.
- Manual shift valve 61, to be switched and the input port and the drain port EX of the line pressure P L is input is connected to the R range pressure oil passage k6, when switched into the input port, R and it outputs the R range pressure P REV to range pressure oil passage k6.
- the third switching valve 72 the switching by the third solenoid valve 71, and outputs the inputted via the R range pressure oil passage k6 R range pressure P REV to the second switching valve 68.
- the second switching valve 68 by the switching of the second solenoid valve 67 is switched and the engagement pressure supplied through the oil passage k3, and R range pressure P REV supplied through the oil passage k4, oil This is supplied to the hydraulic servo 76 via the path k5.
- the hydraulic control device 1 2 of the above structure the oil passage at the time of discharging the hydraulic pressure supplied to the hydraulic servo 76, by switching the third switching valve 72, it is possible to select. That is, one is an oil passage that discharges from the drain port EX of the manual shift valve 61 via the oil passages k5, k4, R range pressure oil passage k6, and the other is an oil passage k5, k4, a discharge delay oil passage. k7, an oil passage that discharges from the drain port EX via the orifice 77.
- the hydraulic pressure discharged through the discharge delay oil passage k7 can be made slower than the hydraulic pressure discharged through the R range pressure oil passage k6, that is, it can be made difficult to escape from the hydraulic servo 76. is there. Therefore, at the time of RN switching described in the first embodiment, the hydraulic pressure is discharged through the oil passage using the discharge delay oil passage k7.
- the discharge delay oil passage k7 For example, in the D range, the R range pressure oil passage k6 is used. If the hydraulic pressure is discharged, the same effect as in the first embodiment can be obtained.
- the first switching valve 65 and the second switching valve 68 are integrated into one switching valve, and accordingly, the first solenoid valve 64 and the second switching valve 68 are combined.
- the solenoid valve 67 and the solenoid valve 67 can be integrated into a single solenoid valve. In this case, the entire configuration can be simplified.
- the hydraulic control devices 1 1 and 1 2 of the automatic transmission are applied to the automatic transmission 3 that achieves the sixth forward speed and the first reverse speed.
- the present invention is not limited to this, and may be applied to, for example, an automatic transmission that achieves eight forward speeds.
- the present invention can also be applied to a transmission.
- the hydraulic control device for an automatic transmission can be used as a hydraulic control device for an automatic transmission mounted on a passenger car, a truck, or the like, and particularly, a frictional mechanism in which oil is supplied in a reverse range and a neutral range. It is suitable for use in a hydraulic control device for an automatic transmission that is required to discharge hydraulic pressure from the hydraulic servo of the combined element, which is difficult to disconnect at the time of RN switching, and is required to be easily released in the D range or the like.
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Abstract
Description
ライン圧(PL)が入力される入力ポート(MVb)と、入力された前記ライン圧(PL)を後進レンジ圧(PREV)として出力する出力ポート(MVd)を有するマニュアルバルブ(MV)と、
前記ライン圧(PL)を調圧して作動油圧(PSLC3)として出力するリニアソレノイド(SLC3)と、
前記リニアソレノイド(SLC3)から供給された作動油圧を、前記第1油圧サーボ(41)と前記第2油圧サーボ(42)とに切り換えて出力する第1切り換え部(21,S1)と、
前記出力ポート(MVd)に接続される後進レンジ圧油路(g1,f)と、
前記作動油圧(PSLC3)又は前記後進レンジ圧(PREV)を前記第2油圧サーボ(42)に切り換えて供給する第2切り換え部(22,S2)と、
油圧の排出を遅くする遅延部(30)を介して油圧を排出する排出遅延油路(i)と、
前記後進レンジ圧油路(g1)と前記排出遅延油路(i)とが接続されるとともに、前記第2油圧サーボ(42)に対し、前記後進レンジ圧油路(g1)と前記排出遅延油路(i)とを切り換えて連通させる第3切り換え部(22,S2)とを備え、
前記第3切り換え部(22,S2)は、前記マニュアルバルブ(MV)が前記ニュートラルレンジ(N)に切り換えられた際に、前記第2油圧サーボ(42)と前記排出遅延油路(i)とを連通させ、前記マニュアルバルブ(MV)が前記前進レンジ(D)又は前記後進レンジ(R)に切り換えられた際に、前記第2油圧サーボ(42)と前記後進レンジ圧油路(g1)とを連通させることを特徴とする。
以下、本発明に係る第1の実施の形態を図1~図6に沿って説明する。
まず、本発明を適用し得る自動変速機3の概略構成について図1に沿って説明する。図1に示すように、例えばFFタイプ(フロントエンジン、フロントドライブ)の車輌に用いて好適な自動変速機3は、エンジン(不図示)に接続し得る自動変速機3の入力軸8を有しており、該入力軸8の軸方向を中心としてトルクコンバータ4と、自動変速機構5とを備えている。
つづいて、本発明に係る自動変速機の油圧制御装置11について説明する。まず、油圧制御装置11における図示を省略した、ライン圧、セカンダリ圧、モジュレータ圧、レンジ圧等の生成部分について、大まかに説明する。なお、これらライン圧、セカンダリ圧、モジュレータ圧、レンジ圧の生成部分は、一般的な自動変速機の油圧制御装置と同様なものであり、周知のものであるので、簡単に説明する。
ついで、本発明に係る油圧制御装置11における主に変速制御を行う部分について図3に沿って説明する。なお、本実施の形態においては、スプール位置を説明するため、図3中に示す右半分の位置を「右半位置」、左半分の位置を「左半位置」という。
次に、本実施の形態に係る油圧制御装置11の作用について説明する。
図4のフローチャート及び図5のタイムチャートに沿って、適宜、図2の係合表、図3の回路図を参照しながら、R-N-D切り換え時の動作について説明する。
本発明に係る第2の実施の形態を、図7に沿って説明する。
3 自動変速機
21,63 第1切り換え部(C3リレーバルブ21)
22 第2切り換え部,第3切り換え部(B2リレーバルブ22)
30 遅延部
41,75 第1油圧サーボ(油圧サーボ)
42 76第2油圧サーボ(油圧サーボ)
66 第2切り換え部
70 第3切り換え部
B-2 第2摩擦係合要素(ブレーキ)
C-3 第1摩擦係合要素(クラッチ)
D 前進レンジ
i 排出遅延油路(油路)
f 後進レンジ圧油路(油路)
g1 後進レンジ圧油路(油路)
g4 後進レンジ圧油路(油路)
g5 後進レンジ圧油路(油路)
g6 後進レンジ圧油路(油路)
MV,61 マニュアルバルブ
MVb 入力ポート
MVd 出力ポート
N ニュートラルレンジ
PL ライン圧
R 後進レンジ
PREV 後進レンジ圧(Rレンジ圧)
PSLC3 作動油圧(制御圧、係合圧)
S1,64 第1切り換え部(ソレノイドバルブ)
S2 第2切り換え部,第3切り換え部(ソレノイドバルブ)
SLC3 リニアソレノイド(リニアソレノイドバルブ)
Claims (2)
- 後進レンジ及び前進レンジで油が供給される第1摩擦係合要素の第1油圧サーボと、前記後進レンジ及びニュートラルレンジで油が供給される第2摩擦係合要素の第2油圧サーボと、を備えた自動変速機の油圧制御装置において、
ライン圧が入力される入力ポートと、入力された前記ライン圧を後進レンジ圧として出力する出力ポートを有するマニュアルバルブと、
前記ライン圧を調圧して作動油圧として出力するリニアソレノイドと、
前記リニアソレノイドから供給された作動油圧を、前記第1油圧サーボと前記第2油圧サーボとに切り換えて出力する第1切り換え部と、
前記出力ポートに接続される後進レンジ圧油路と、
前記作動油圧又は前記後進レンジ圧を前記第2油圧サーボに切り換えて供給する第2切り換え部と、
油圧の排出を遅くする遅延部を介して油圧を排出する排出遅延油路と、
前記後進レンジ圧油路と前記排出遅延油路とが接続されるとともに、前記第2油圧サーボに対し、前記後進レンジ圧油路と前記排出遅延油路とを切り換えて連通させる第3切り換え部とを備え、
前記第3切り換え部は、前記マニュアルバルブが前記ニュートラルレンジに切り換えられた際に、前記第2油圧サーボと前記排出遅延油路とを連通させ、前記マニュアルバルブが前記前進レンジ又は前記後進レンジに切り換えられた際に、前記第2油圧サーボと前記後進レンジ圧油路とを連通させる、
ことを特徴とする自動変速機の油圧制御装置。 - 前記第2切り換え部と前記第3切り換え部とは、1本の切り換えバルブと、前記切り換えバルブを切り換えるソレノイドバルブにより構成されている、
ことを特徴とする請求項1に記載の自動変速機の油圧制御装置。
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DE112011100125T DE112011100125T5 (de) | 2010-03-11 | 2011-01-28 | Hydraulisches steuergerät eines automatikgetriebes |
CN2011800063791A CN102741593A (zh) | 2010-03-11 | 2011-01-28 | 自动变速器的油压控制装置 |
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JP2010055012A JP5304690B2 (ja) | 2010-03-11 | 2010-03-11 | 自動変速機の油圧制御装置 |
JP2010-055012 | 2010-03-11 |
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US (1) | US8292771B2 (ja) |
JP (1) | JP5304690B2 (ja) |
CN (1) | CN102741593A (ja) |
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JP5123977B2 (ja) * | 2010-04-15 | 2013-01-23 | ジヤトコ株式会社 | 自動変速機及びその油圧制御方法 |
JP6106946B2 (ja) | 2012-04-23 | 2017-04-05 | マツダ株式会社 | 自動変速機の制御方法及び制御装置 |
JP6003609B2 (ja) * | 2012-12-14 | 2016-10-05 | アイシン・エィ・ダブリュ株式会社 | 自動変速機の油圧制御装置 |
JP2015021527A (ja) * | 2013-07-17 | 2015-02-02 | 株式会社デンソー | 自動変速機の制御装置 |
JP6201592B2 (ja) * | 2013-09-30 | 2017-09-27 | アイシン・エィ・ダブリュ株式会社 | 自動変速機の油圧制御装置 |
US9546730B2 (en) * | 2014-01-31 | 2017-01-17 | Aisin Aw Co., Ltd. | Hydraulic control device for automatic transmission |
JP6285273B2 (ja) * | 2014-04-25 | 2018-02-28 | トヨタ自動車株式会社 | 自動変速機の油圧制御装置 |
JP6632092B2 (ja) * | 2016-08-03 | 2020-01-22 | ジヤトコ株式会社 | 自動変速機のセレクト制御装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS647939U (ja) * | 1987-07-06 | 1989-01-17 | ||
JPH0560207A (ja) * | 1991-08-28 | 1993-03-09 | Mazda Motor Corp | 自動変速機の油圧回路 |
JPH1089452A (ja) * | 1996-08-30 | 1998-04-07 | Hyundai Motor Co Ltd | 自動変速機用液圧制御システム |
JPH1137269A (ja) * | 1997-07-18 | 1999-02-12 | Toyota Motor Corp | 自動変速機の油圧制御装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP4129145B2 (ja) * | 2001-06-04 | 2008-08-06 | ジヤトコ株式会社 | 自動変速機の変速油圧装置 |
JP4056305B2 (ja) * | 2002-06-28 | 2008-03-05 | アイシン・エィ・ダブリュ株式会社 | 自動変速機の油圧制御装置 |
JP4211723B2 (ja) * | 2004-10-14 | 2009-01-21 | トヨタ自動車株式会社 | 自動変速機の油圧制御装置 |
US7628729B2 (en) * | 2005-12-28 | 2009-12-08 | Aisin Aw Co., Ltd. | Hydraulic control apparatus for an automatic transmission |
JP2008144941A (ja) * | 2006-12-13 | 2008-06-26 | Toyota Motor Corp | 車両用自動変速機の油圧制御装置 |
-
2010
- 2010-03-11 JP JP2010055012A patent/JP5304690B2/ja not_active Expired - Fee Related
-
2011
- 2011-01-28 DE DE112011100125T patent/DE112011100125T5/de not_active Withdrawn
- 2011-01-28 CN CN2011800063791A patent/CN102741593A/zh active Pending
- 2011-01-28 WO PCT/JP2011/051793 patent/WO2011111434A1/ja active Application Filing
- 2011-02-09 US US13/023,824 patent/US8292771B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS647939U (ja) * | 1987-07-06 | 1989-01-17 | ||
JPH0560207A (ja) * | 1991-08-28 | 1993-03-09 | Mazda Motor Corp | 自動変速機の油圧回路 |
JPH1089452A (ja) * | 1996-08-30 | 1998-04-07 | Hyundai Motor Co Ltd | 自動変速機用液圧制御システム |
JPH1137269A (ja) * | 1997-07-18 | 1999-02-12 | Toyota Motor Corp | 自動変速機の油圧制御装置 |
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US20110219904A1 (en) | 2011-09-15 |
US8292771B2 (en) | 2012-10-23 |
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JP5304690B2 (ja) | 2013-10-02 |
DE112011100125T5 (de) | 2012-09-13 |
JP2011190824A (ja) | 2011-09-29 |
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