CN110953337B - Parking control system, gearbox and car - Google Patents
Parking control system, gearbox and car Download PDFInfo
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- CN110953337B CN110953337B CN202010110382.9A CN202010110382A CN110953337B CN 110953337 B CN110953337 B CN 110953337B CN 202010110382 A CN202010110382 A CN 202010110382A CN 110953337 B CN110953337 B CN 110953337B
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- parking
- clutch
- valve
- switching
- control
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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
- F16H61/0262—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 hydraulic
- F16H61/0276—Elements specially adapted for hydraulic control units, e.g. 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
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
- F16H63/3416—Parking lock mechanisms or brakes in the transmission
- F16H63/3483—Parking lock mechanisms or brakes in the transmission with hydraulic actuating 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
- F16H2061/0012—Transmission control for optimising power output of driveline
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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
- F16H61/0262—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 hydraulic
- F16H61/0276—Elements specially adapted for hydraulic control units, e.g. valves
- F16H2061/0279—Details of hydraulic valves, e.g. lands, ports, spools or springs
Abstract
The invention provides a parking control system, a gearbox and an automobile, and relates to the technical field of automobiles, wherein the parking control system comprises a first oil way for communicating a main oil way with a parking valve control port, and a parking control valve for controlling the parking valve is arranged on the first oil way; the parking liquid outlet is respectively communicated with an oil tank and a valve core control port oil way of the parking valve; a parking switching valve is arranged between a parking liquid outlet of the parking control valve and the oil tank, and when the parking control valve is in a parking state, the parking switching valve controls the parking liquid outlet to be communicated with the oil tank; the parking control system comprises a second oil way for communicating the main oil way with the clutch, and the second oil way is provided with a clutch control valve; the clutch liquid outlet is respectively communicated with the switching control ports of the clutch and the parking switching valve, and when the parking device is in a parking state, the clutch control valve controls the clutch liquid inlet and the clutch liquid outlet to be disconnected.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a parking control system, a gearbox and an automobile.
Background
In the prior art, when a parking gear is released, after a parking electromagnetic valve and a clutch electromagnetic valve are simultaneously opened, hydraulic oil of a main oil way simultaneously enters a clutch control valve and the parking control valve, so that the clutch is not combined in place, and the parking control valve controls a valve core of the parking valve to move, so that the parking gear of an automobile is unlocked. Because the clutch is not combined in place at this moment, the rotating speed of each transmission part in the gearbox can not be determined, the transmission ratio of the gearbox can not be determined, and if the parking valve is unlocked at the same time, the automobile can move forward at an uncertain speed, so that the driving experience is influenced.
Disclosure of Invention
The invention aims to provide a parking control system, a gearbox and an automobile, and aims to solve the technical problem that the starting speed is unstable due to the fact that a parking valve releases parking when the transmission ratio controlled by a clutch in the gearbox is not fixed when the existing automobile starts.
In a first aspect, the parking control system provided by the embodiment of the present invention includes a first oil passage for communicating a main oil passage and a parking valve control port, and a parking control valve for controlling the parking valve is disposed on the first oil passage; the parking control valve comprises a parking liquid inlet and a parking liquid outlet, the parking liquid inlet is communicated with the main oil way, and the parking liquid outlet is respectively communicated with an oil tank and a valve core control port oil way of the parking valve;
a parking switching valve is arranged between a parking liquid outlet of the parking control valve and the oil tank, and when the parking control valve is in a parking state, the parking switching valve controls the parking liquid outlet to be communicated with the oil tank;
the parking control system comprises a second oil way for communicating the main oil way with the clutch, and the second oil way is provided with a clutch control valve; the clutch control valve comprises a clutch liquid inlet and a clutch liquid outlet, the clutch liquid inlet is communicated with the main oil path, the clutch liquid outlet is respectively communicated with the clutch and a switching control port of the parking switching valve, and when the clutch control valve is in a parking state, the clutch liquid inlet and the clutch liquid outlet are controlled to be disconnected by the clutch control valve; when the parking state is switched to the non-parking state, the clutch control valve can control the clutch liquid inlet and the clutch liquid outlet to be communicated, so that hydraulic oil of the main oil path enters the parking switching valve to control the parking switching valve to disconnect the parking liquid outlet from the oil tank.
Furthermore, the clutch control valve comprises a clutch valve body and a clutch valve core connected inside the clutch valve body in a sliding manner, and a clutch liquid injection cavity and a clutch control cavity are arranged in the clutch valve body;
the clutch liquid inlet and the clutch liquid outlet are arranged on the clutch valve body, the valve body is also provided with a clutch control port, and the clutch control port of the clutch control valve is connected with a clutch electromagnetic valve oil way; the clutch liquid inlet and the clutch liquid outlet are respectively communicated with a clutch liquid injection cavity, and the clutch control port is communicated with the clutch control cavity;
the clutch control valve also comprises a clutch reset piece which is abutted against one side of the clutch valve core so that the clutch valve core blocks the clutch liquid inlet and the clutch liquid outlet; the clutch valve core is driven by the liquid inlet of the clutch control cavity to move, so that the clutch liquid inlet is communicated with the clutch liquid outlet.
Furthermore, the clutch valve core comprises a clutch opening shoulder part and a clutch opening shoulder part which are connected, the diameter of the clutch opening shoulder part is smaller than that of the clutch opening shoulder part, and the outer wall of the clutch opening shoulder part abuts against the inner wall of the clutch liquid injection cavity and is used for plugging the clutch liquid inlet;
the length of the clutch conducting shoulder part is more than or equal to the axial distance between the clutch liquid inlet and the clutch liquid outlet, so that the clutch liquid inlet and the clutch liquid outlet are communicated when the clutch conducting shoulder part is aligned with the clutch conducting shoulder part.
Furthermore, the parking switching valve comprises a parking switching valve body and a parking switching valve core which is connected in the parking switching valve body in a sliding manner, and a switching liquid injection cavity and a switching control cavity are arranged in the parking switching valve body;
a switching liquid inlet, a switching liquid outlet and a switching control port are arranged on the parking switching valve body, the switching liquid inlet and the switching liquid outlet are respectively communicated with a switching liquid injection cavity, and the switching control port is communicated with a switching control cavity; the switching liquid inlet is communicated with a parking liquid outlet of the parking control valve, and the switching liquid outlet is communicated with the oil tank;
the parking switching valve further comprises a switching reset piece, and the switching reset piece is abutted against one side of the parking switching valve core so as to enable the switching liquid inlet to be communicated with the switching liquid outlet; the parking switching valve core is driven by the liquid inlet of the switching control cavity to move, so that the parking switching valve core can block the switching liquid inlet and the switching liquid outlet.
Furthermore, the parking switching valve core comprises a switching off shoulder part and a switching on shoulder part which are connected, the diameter of the switching on shoulder part is smaller than that of the switching off shoulder part, and the outer wall of the switching off shoulder part abuts against the inner wall of the switching liquid injection cavity and is used for plugging the switching liquid outlet;
the length of the switching conducting shoulder part is more than or equal to the axial distance between the switching liquid inlet and the switching liquid outlet, so that when the switching liquid inlet and the switching liquid outlet are aligned with the switching conducting shoulder part, the switching liquid inlet is communicated with the switching liquid outlet.
Furthermore, the parking control valve comprises a parking valve body and a parking valve core which is connected in the parking valve body in a sliding manner, and a parking liquid injection cavity and a main parking control cavity are arranged in the parking valve body;
the parking valve body is provided with a parking liquid inlet, a parking liquid outlet and a main parking control port, the parking liquid inlet and the parking liquid outlet are respectively communicated with a parking liquid injection cavity, and the main parking control port is communicated with a main parking control cavity; the parking liquid inlet is communicated with the main oil way, and the parking liquid outlet is communicated with a valve core control port of the parking valve;
the parking control valve further comprises a parking reset piece, and the parking reset piece is abutted against one side of the parking valve core so that the parking valve core blocks the parking liquid inlet and the parking liquid outlet; and the parking valve core is driven by the liquid inlet of the main parking control cavity to move so as to communicate the parking liquid inlet with the parking liquid outlet.
Furthermore, the parking valve core comprises a parking break-off shoulder part and a parking conducting shoulder part which are connected, the diameter of the parking conducting shoulder part is smaller than that of the parking break-off shoulder part, and the outer wall of the parking break-off shoulder part abuts against the inner wall of the parking liquid injection cavity and is used for plugging the parking liquid inlet;
the length more than or equal to of parking conduction shoulder portion axis distance between parking inlet and the parking liquid outlet, so that parking inlet and parking liquid outlet all with when parking conduction shoulder portion aligns, parking inlet and parking liquid outlet intercommunication.
Furthermore, be provided with vice parking control chamber in the parking valve body, be provided with vice parking control mouth on the parking valve body, just vice parking control mouth with vice parking control chamber intercommunication, the parking case is in part in the vice parking control chamber has the stair structure, vice parking control mouth and clutch control valve's separation and reunion liquid outlet intercommunication, the parking case can by hydraulic drive in the vice parking control chamber, so that parking inlet and parking liquid outlet intercommunication.
In a second aspect, an embodiment of the present invention provides a transmission including the parking control system.
In a third aspect, an embodiment of the present invention provides an automobile, including the above transmission.
The parking control system comprises a first oil path used for communicating a main oil path and a parking valve control port, wherein a parking control valve used for controlling the parking valve is arranged on the first oil path; the parking control valve comprises a parking liquid inlet and a parking liquid outlet, the parking liquid inlet is communicated with the main oil way, and the parking liquid outlet is respectively communicated with an oil tank and a valve core control port oil way of the parking valve; a parking switching valve is arranged between a parking liquid outlet of the parking control valve and the oil tank, and when the parking control valve is in a parking state, the parking switching valve controls the parking liquid outlet to be communicated with the oil tank; because the parking liquid outlet and the oil tank are in a conducting state in the parking state, hydraulic oil flowing out of the parking liquid outlet of the parking control valve flows to the parking switching valve and directly flows back to the oil tank, and the oil pressure of the hydraulic oil is not enough to enable the valve core of the parking valve to move. The parking control system comprises a second oil way for communicating the main oil way with the clutch, and the second oil way is provided with a clutch control valve; the clutch control valve comprises a clutch liquid inlet and a clutch liquid outlet, the clutch liquid inlet is communicated with the main oil way, the clutch liquid outlet is communicated with the switching control ports of the clutch and the parking switching valve respectively, and when the clutch control valve is in a parking state, the clutch liquid inlet and the clutch liquid outlet are disconnected under the control of the clutch control valve. When the parking control valve is in a parking state, the clutch liquid inlet and the clutch liquid outlet are disconnected, so that hydraulic oil in the main oil path cannot flow into the parking switching valve through the clutch control valve, the on-off state of the parking switching valve cannot be changed, and the hydraulic oil flowing out of the parking liquid outlet of the parking control valve can flow into the oil tank all the time. When the parking state is switched to the non-parking state, the clutch control valve can control the clutch liquid inlet and the clutch liquid outlet to be communicated, so that hydraulic oil of a main oil path enters the parking switching valve to control the parking switching valve to disconnect the parking liquid outlet and the oil tank, only when the clutch liquid inlet and the clutch liquid outlet of the clutch control valve are communicated, the hydraulic oil of the main oil path can flow into the switching control port of the parking switching valve to control the parking switching valve to change the on-off state, the hydraulic oil flowing out of the parking liquid outlet of the parking control valve can not flow into the oil tank, meanwhile, the clutch also has hydraulic oil input, and therefore the clutch can move in place. The parking switch valve is closed along with the movement of the valve core of the parking switch valve, hydraulic oil flowing out of the parking liquid outlet of the parking control valve can flow into the control port of the parking control valve completely to push the parking valve core to move and release the parking state, so that the unlocking of the parking valve cannot be earlier than the combination of the clutch in place.
Compared with the prior art, the parking oil inlet of the parking control valve is communicated with the main oil way, when the valve cores of the clutch control valve and the parking control valve act simultaneously, hydraulic oil flowing out of the parking liquid outlet of the parking control valve flows into the oil tank through the parking switching valve instead of opening the parking valve at the first time; and along with the movement of a clutch valve core in the clutch control valve, the clutch liquid inlet and the clutch liquid outlet are communicated, one part of hydraulic oil flowing out of the clutch liquid outlet flows out to drive the clutch inner valve core to move, so that the clutch is combined in place, and the other part of hydraulic oil flows into a control port of the parking switching valve to close the parking switching valve. When the parking switching valve is closed, the parking control valve can be opened only by hydraulic oil flowing out of a parking liquid outlet of the parking control valve, so that time difference exists between the clutch in-place combination and the parking valve unlocking. In the parking control system provided by the embodiment of the invention, the clutch control valve firstly controls the clutch to be combined in place, and meanwhile, the parking switching valve is closed. With the closing of the parking switching valve, the parking control valve can control the parking valve to release the parking state later, so that the problem that the parking state is released by the parking valve because the clutch is not combined in place in the prior art is solved.
According to the gearbox and the automobile provided by the embodiment of the invention, the gearbox comprises the parking control system, and the automobile comprises the gearbox. Because the transmission and the automobile provided by the embodiment of the invention both use the parking control system, the transmission and the automobile provided by the embodiment of the invention also have the advantages of the parking control system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a parking control system according to an embodiment of the present invention in a parking state;
FIG. 2 is a schematic diagram of a parking control valve and a clutch control valve in a parking control system according to an embodiment of the present invention when they are open;
FIG. 3 is a schematic diagram of a clutch control valve in the parking control system provided by the embodiment of the invention;
FIG. 4 is a schematic diagram of a parking switching valve in the parking control system provided by the embodiment of the invention;
fig. 5 is a schematic diagram of a parking control valve in the parking control system according to the embodiment of the invention.
Icon:
100-clutch control valve; 110-clutch liquid inlet; 120-clutch liquid outlet; 130-clutch control port; 140-a clutch valve body; 141-clutch liquid injection cavity; 142-a clutch control chamber; 150-clutch spool; 151-break off shoulder; 152-clutch conduction shoulder; 160-clutch reset;
200-a parking control valve; 210-a parking liquid inlet; 220-parking liquid outlet; 230-primary parking control port; 240-parking valve body; 241-parking liquid injection cavity; 242-primary parking control chamber; 243-auxiliary parking control chamber; 250-a parking valve core; 251-parking off shoulder; 252-park-on shoulder; 260-parking reset piece; 270-auxiliary parking control port;
300-parking switching valve; 310-switching the liquid inlet; 320-switching the liquid outlet; 330-switching control port; 340-parking switch valve body; 341-switching liquid injection chamber; 342-a switching control chamber; 350-parking switching valve core; 351-switch off shoulder; 352-switch-on shoulder; 360-switching reset piece;
400-a clutch; 500-a parking valve; 610-main oil way; 620-parking solenoid valve; 630-Clutch solenoid valve.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, a parking control system according to an embodiment of the present invention includes a first oil passage for communicating a main oil passage 610 with a control port of a parking valve 500, and a parking control valve 200 for controlling the parking valve 500 is provided on the first oil passage; the parking control valve comprises a parking liquid inlet 210 and a parking liquid outlet 220, the parking liquid inlet is communicated with the main oil path, and the parking liquid outlet 220 is respectively communicated with an oil tank and a valve core control port oil path of the parking valve 500; a parking switching valve 300 is arranged between the parking liquid outlet 220 of the parking control valve 200 and the oil tank, and when the parking control valve is in a parking state, the parking switching valve 300 controls the parking liquid outlet 220 to be communicated with the oil tank; since the parking fluid outlet 220 is in a communication state with the oil tank in the parking state, the hydraulic fluid flowing out of the parking fluid outlet of the parking control valve flows to the parking switching valve and directly flows back to the oil tank, and the oil pressure of the hydraulic fluid is not enough to move the valve core of the parking valve. The parking control system comprises a second oil path for communicating the main oil path with the clutch 400, and the clutch control valve 100 is arranged on the second oil path; the clutch control valve 100 includes a clutch inlet 110 and a clutch outlet 120, the clutch inlet 110 is communicated with the main oil path 610, the clutch outlet 120 is respectively communicated with the clutch 400 and the switching control port 330 of the parking switching valve 300, and when the parking state is satisfied, the clutch control valve controls the clutch inlet 110 and the clutch outlet 120 to be disconnected. Since the clutch inlet 110 and the clutch outlet 120 are disconnected when the parking device is in the parking state, the hydraulic oil in the main oil path cannot flow into the parking switch valve through the clutch control valve, and the on-off state of the parking switch valve cannot be changed, so that the hydraulic oil flowing out of the parking outlet of the parking control valve flows into the oil tank. When the parking state is switched to the non-parking state, the clutch control valve 100 can control the on/off liquid inlet 110 and the on/off liquid outlet 120 to be communicated, so that the hydraulic oil of the main oil path enters the parking switching valve 300 to control the parking switching valve 300 to disconnect the parking liquid outlet 220 from the oil tank. Only when the clutch liquid inlet and the clutch liquid outlet of the clutch control valve are communicated, hydraulic oil of the main oil way flows into the switching control port of the parking switching valve, the parking switching valve is controlled to change the on-off state, the hydraulic oil flowing out of the parking liquid outlet of the parking control valve cannot flow into the oil tank, and meanwhile, the clutch is also input with the hydraulic oil, so that the clutch can move in place. The parking switch valve is closed along with the movement of the valve core of the parking switch valve, hydraulic oil flowing out of the parking liquid outlet of the parking control valve can flow into the control port of the parking control valve completely to push the parking valve core to move and release the parking state, so that the unlocking of the parking valve cannot be earlier than the combination of the clutch in place.
Compared with the prior art, the parking oil inlet of the parking control valve is communicated with the main oil way, when the valve cores of the clutch control valve and the parking control valve act simultaneously, hydraulic oil flowing out of the parking liquid outlet of the parking control valve flows into the oil tank through the parking switching valve instead of opening the parking valve at the first time; and along with the movement of a clutch valve core in the clutch control valve, the clutch liquid inlet and the clutch liquid outlet are communicated, one part of hydraulic oil flowing out of the clutch liquid outlet flows out to drive a piston in the clutch to move, so that the clutch is combined in place, and the other part of hydraulic oil flows into a control port of the parking switching valve to close the parking switching valve. When the parking switching valve is closed, the parking control valve can be opened only by hydraulic oil flowing out of a parking liquid outlet of the parking control valve, so that time difference exists between the clutch in-place combination and the parking valve unlocking. In the parking control system provided by the embodiment of the invention, the clutch control valve firstly controls the clutch to be combined in place, and meanwhile, the parking switching valve is closed. With the closing of the parking switching valve, the parking control valve can control the parking valve to release the parking state later, so that the problem that the parking state is released by the parking valve because the clutch is not combined in place in the prior art is solved.
The number of the clutches in the gearbox is multiple, and the clutch mentioned in the application is any one of the multiple clutches in the gearbox.
As shown in fig. 3, the clutch control valve 100 includes a clutch valve body 140, and a clutch valve core 150 slidably connected inside the valve body, and a clutch liquid injection chamber 141 and a clutch control chamber 142 are provided in the clutch valve body 140. The clutch liquid inlet 110 and the clutch liquid outlet 120 are arranged on the clutch valve body 140, the clutch valve body 140 is further provided with a clutch control port 130, and the clutch control port 130 of the clutch control valve 100 is connected with an oil circuit of a clutch solenoid valve 630; the clutch liquid inlet 110 and the clutch liquid outlet 120 are respectively communicated with a clutch liquid injection cavity 141, and the clutch control port 130 is communicated with a clutch control cavity 142. When the automobile is changed from the parking state to the non-parking state, the clutch solenoid valve 630 is opened, that is, hydraulic oil for controlling the movement of the clutch valve core 150 of the clutch is injected into the clutch control cavity 142, so as to push the clutch valve core to move, and the clutch liquid inlet is communicated with the clutch liquid outlet.
The clutch control valve 100 further includes a clutch reset member 160, which may be a spring, the clutch reset member 160 abuts against one side of the clutch valve core 150, and under the pushing of the clutch reset member, the clutch valve core is in a disconnected state in a parking state, even though the clutch liquid inlet 110 and the clutch liquid outlet 120 are disconnected. When the automobile is changed from the parking state to the non-parking state, the clutch valve core 150 is driven by the liquid inlet of the clutch control cavity 142 to move, so that the clutch liquid inlet 110 and the clutch liquid outlet 120 can be communicated.
As shown in fig. 4, the parking switch valve 300 includes a parking switch valve body 340, and a parking switch valve spool 350 slidably coupled in the parking switch valve body 340, and a switch injection chamber 341 and a switch control chamber 342 are provided in the parking switch valve body 340; the parking switching valve body 340 is provided with a switching liquid inlet 310, a switching liquid outlet 320 and a switching control port 330, the switching liquid inlet 310 and the switching liquid outlet 320 are respectively communicated with a switching liquid injection cavity 341, and the switching control port 330 is communicated with a switching control cavity 342; the switching inlet 310 is communicated with the parking outlet 220 of the parking control valve 200, and the switching outlet 320 is communicated with the oil tank; when the automobile is in a parking state, the switching valve core of the parking switching valve can conduct the switching liquid inlet and the switching liquid outlet, and hydraulic oil flowing out of the parking liquid outlet of the parking control valve can return to the oil tank. The parking switching valve 300 further comprises a switching reset piece 360, the switching reset piece can be a spring, the switching reset piece 360 abuts against one side of the switching valve core 350 to push the switching valve core 350, so that the switching liquid inlet 310 and the switching liquid outlet 320 are communicated when the automobile is in a parking state, and the parking valve cannot move before the clutch is combined in place.
The parking switching valve core 350 is driven by the liquid inlet of the switching control cavity 342, and the switching control port of the parking switching valve is communicated with the clutch liquid outlet of the clutch control valve. After the clutch valve core of the clutch control valve acts, the clutch liquid inlet and the clutch liquid outlet of the clutch control valve can be communicated, hydraulic oil of the main oil circuit can enter the switching control cavity through the clutch liquid inlet, the clutch liquid outlet and the switching control port in sequence, and then the switching valve core is pushed to move, so that the parking switching valve core 350 can block the switching liquid inlet 310 and the switching liquid outlet 320.
The parking switch valve core 350 comprises a switch off shoulder portion 351 and a switch on shoulder portion 352 which are connected, the diameter of the switch on shoulder portion 352 is smaller than that of the switch off shoulder portion 351, a gap between the switch on shoulder portion and the inner wall of the switch valve body can form a switch liquid injection cavity, the outer wall of the switch off shoulder portion 351 is abutted against the inner wall of the switch liquid injection cavity 341, and when the switch off shoulder portion moves to a switch liquid outlet, the switch off shoulder portion can block the switch liquid outlet 320, so that the switch liquid inlet and the switch liquid outlet are disconnected; the length of the switching conducting shoulder portion 352 is greater than or equal to the axial distance between the switching inlet port 310 and the switching outlet port 320, and when the switching inlet port 310 and the switching outlet port 320 are both aligned with the switching conducting shoulder portion 352, the switching inlet port 310 and the switching outlet port 320 are communicated through the switching liquid injection cavity. And when the oil pressure of switching control mouth is not enough, switch and reset the piece and can drive and switch the case motion, when switching off shoulder portion blocks and switches over the liquid outlet, switch over the inlet and switch over the disconnection of liquid outlet.
As shown in fig. 5, the parking control valve 200 includes a parking valve body 240, and a parking valve spool 250 slidably coupled in the parking valve body 240, and a parking charge chamber 241 and a main parking control chamber 242 are provided in the parking valve body 240; the parking valve body 240 is provided with a parking fluid inlet 210, a parking fluid outlet 220 and a main parking control port 230, the parking fluid inlet 210 and the parking fluid outlet 220 are respectively communicated with a parking fluid injection cavity 241, and the main parking control port 230 is communicated with a main parking control cavity 242; the parking fluid inlet 210 is communicated with a main fluid passage 610, and the parking fluid outlet 220 is communicated with a valve core control port of the parking valve 500; when the automobile is changed from the parking state to the non-parking state, the parking solenoid valve 620 is opened, namely, hydraulic oil for controlling the movement of the parking valve core enters the main parking control port to drive the parking valve core to move, so that the parking control valve is opened, namely, the parking liquid inlet is communicated with the parking liquid outlet.
The parking control valve 200 further comprises a parking reset member 260, which may be a spring, wherein the parking reset member 260 abuts against one side of the parking valve core 250 to push the parking valve core, so that the parking liquid inlet and the parking liquid outlet are disconnected when the parking control valve is in a parking state; parking valve core 250 is driven by the liquid inlet of main parking control chamber 242 to move, that is, when parking solenoid valve 620 is opened, hydraulic oil that has the parking solenoid valve outflow enters into the main parking control chamber, promotes parking valve core, so that parking liquid inlet 210 and parking liquid outlet 220 communicate.
The parking valve core 250 comprises a parking break-off shoulder part 251 and a parking conducting shoulder part 252 which are connected, the diameter of the parking conducting shoulder part 252 is smaller than that of the parking break-off shoulder part 251, the parking conducting shoulder part and the inner wall of a parking valve body form a main parking control cavity, and the outer wall of the parking break-off shoulder part 251 abuts against the inner wall of the parking liquid injection cavity 241 and is used for plugging the parking liquid inlet 210; the length of parking conducting shoulder portion 252 is greater than or equal to the axial distance between parking liquid inlet 210 and parking liquid outlet 220, so that when parking liquid inlet 210 and parking liquid outlet 220 are both aligned with parking conducting shoulder portion 252, parking liquid inlet 210 and parking liquid outlet 220 are communicated.
Be provided with vice parking control chamber 243 in the parking valve body 240, be provided with vice parking control mouth 270 on the parking valve body 240, just vice parking control mouth 270 with vice parking control chamber 243 intercommunication, parking case 250 is in part in the vice parking control chamber 243 has the stair structure, vice parking control mouth 270 and clutch control valve 100's separation and reunion liquid outlet 120 intercommunication, when separation and reunion inlet and separation and reunion liquid outlet switch-on, the hydraulic oil that flows from the main oil circuit can flow into vice parking control intracavity to promote parking case, so that parking inlet and parking liquid outlet switch-on, just so need not be in the continuous supply of hydraulic oil of parking solenoid valve department, the oil circuit cooperation is more reasonable.
According to the gearbox and the automobile provided by the embodiment of the invention, the gearbox comprises the parking control system, and the automobile comprises the gearbox. Because the transmission and the automobile provided by the embodiment of the invention both use the parking control system, the transmission and the automobile provided by the embodiment of the invention also have the advantages of the parking control system.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A parking control system is characterized by comprising a first oil path for communicating a main oil path (610) with a control port of a parking valve (500), wherein the first oil path is provided with the parking control valve (200) for controlling the parking valve (500); the parking control valve comprises a parking liquid inlet (210) and a parking liquid outlet (220), the parking liquid inlet (210) is communicated with the main oil path (610), and the parking liquid outlet (220) is respectively communicated with an oil tank and a valve core control port oil path of the parking valve (500);
a parking switching valve (300) is arranged between a parking liquid outlet (220) and an oil tank of the parking control valve (200), and when the parking control valve is in a parking state, the parking switching valve (300) controls the parking liquid outlet (220) to be communicated with the oil tank;
the parking control system comprises a second oil path used for communicating a main oil path and a clutch (400), and a clutch control valve (100) is arranged on the second oil path; the clutch control valve (100) comprises a clutch liquid inlet (110) and a clutch liquid outlet (120), the clutch liquid inlet (110) is communicated with a main oil path (610), the clutch liquid outlet (120) is respectively communicated with the clutch (400) and a switching control port (330) of the parking switching valve (300), and when the clutch control valve (100) is in a parking state, the clutch liquid inlet (110) and the clutch liquid outlet (120) are controlled to be disconnected; when the parking state is switched to the non-parking state, the clutch control valve (100) can control the connection of the clutch liquid inlet (110) and the clutch liquid outlet (120), so that hydraulic oil of a main oil path enters the parking switching valve (300) to control the parking switching valve (300) to disconnect the parking liquid outlet (220) from an oil tank.
2. The parking control system according to claim 1, wherein the clutch control valve (100) comprises a clutch valve body (140) and a clutch valve core (150) connected in a sliding manner inside the clutch valve body, and a clutch liquid injection cavity (141) and a clutch control cavity (142) are arranged in the clutch valve body (140);
the clutch liquid inlet (110) and the clutch liquid outlet (120) are arranged on the clutch valve body (140), the clutch valve body (140) is also provided with a clutch control port (130), and the clutch control port (130) of the clutch control valve (100) is connected with an oil circuit of a clutch electromagnetic valve (630); the clutch liquid inlet (110) and the clutch liquid outlet (120) are respectively communicated with a clutch liquid injection cavity (141), and the clutch control port (130) is communicated with a clutch control cavity (142);
the clutch control valve (100) further comprises a clutch resetting piece (160), wherein the clutch resetting piece (160) is abutted against one side of the clutch valve core (150) so that the clutch valve core (150) blocks the clutch liquid inlet (110) and the clutch liquid outlet (120); the clutch valve core (150) is driven by liquid inlet of the clutch control cavity (142) to move, so that the clutch liquid inlet (110) is communicated with the clutch liquid outlet (120).
3. The parking control system according to claim 2, wherein the clutch valve spool (150) comprises a clutch opening shoulder portion (151) and a clutch opening shoulder portion (152) which are connected, the diameter of the clutch opening shoulder portion (152) is smaller than that of the clutch opening shoulder portion (151), the outer wall of the clutch opening shoulder portion (151) abuts against the inner wall of the clutch liquid injection cavity (141) and is used for blocking the clutch liquid inlet (110);
the length of separation and reunion conduction shoulder portion (152) is more than or equal to axis distance between separation and reunion inlet (110) and the separation and reunion liquid outlet (120), so that separation and reunion inlet (110) and separation and reunion liquid outlet (120) all with when separation and reunion conduction shoulder portion (152) align, separation and reunion inlet (110) and separation and reunion liquid outlet (120) communicate.
4. The parking control system according to claim 2, wherein the parking switch valve (300) includes a parking switch valve body (340), and a parking switch valve spool (350) slidably coupled within the parking switch valve body (340), a switch charge chamber (341) and a switch control chamber (342) being provided within the parking switch valve body (340);
a switching liquid inlet (310), a switching liquid outlet (320) and a switching control port (330) are arranged on the parking switching valve body (340), the switching liquid inlet (310) and the switching liquid outlet (320) are respectively communicated with a switching liquid injection cavity (341), and the switching control port (330) is communicated with a switching control cavity (342); the switching liquid inlet (310) is communicated with a parking liquid outlet (220) of the parking control valve (200), and the switching liquid outlet (320) is communicated with an oil tank;
the parking switching valve (300) further comprises a switching reset piece (360), and the switching reset piece (360) abuts against one side of the parking switching valve core (350) so as to enable the switching liquid inlet (310) and the switching liquid outlet (320) to be communicated; the parking switching valve core (350) is driven by liquid inlet of the switching control cavity (342) to move, so that the parking switching valve core (350) can block the switching liquid inlet (310) and the switching liquid outlet (320).
5. The parking control system according to claim 4, wherein the parking switch spool (350) includes a switch off shoulder (351) and a switch on shoulder (352) connected, the switch on shoulder (352) having a smaller diameter than the switch off shoulder (351), an outer wall of the switch off shoulder (351) abutting on an inner wall of the switch injection cavity (341) for blocking the switch liquid outlet (320);
the length of the switch conducting shoulder (352) is greater than or equal to the axial distance between the switch inlet (310) and the switch outlet (320), so that when the switch inlet (310) and the switch outlet (320) are both aligned with the switch conducting shoulder (352), the switch inlet (310) and the switch outlet (320) are communicated.
6. Parking control system according to claim 4, characterized in that the parking control valve (200) comprises a parking valve body (240) and a parking valve spool (250) slidably connected within the parking valve body (240), a parking injection chamber (241) and a main parking control chamber (242) being provided within the parking valve body (240);
a parking liquid inlet (210), a parking liquid outlet (220) and a main parking control port (230) are arranged on the parking valve body (240), the parking liquid inlet (210) and the parking liquid outlet (220) are respectively communicated with a parking liquid injection cavity (241), and the main parking control port (230) is communicated with a main parking control cavity (242); the parking liquid inlet (210) is communicated with a main oil path (610), and the parking liquid outlet (220) is communicated with a valve core control port of a parking valve (500);
the parking control valve (200) further comprises a parking resetting piece (260), wherein the parking resetting piece (260) abuts against one side of the parking valve core (250) so that the parking valve core (250) blocks the parking liquid inlet (210) and the parking liquid outlet (220); and the parking valve core (250) is driven by the liquid inlet of the main parking control cavity (242) to move so as to enable the parking liquid inlet (210) and the parking liquid outlet (220) to be communicated.
7. The parking control system according to claim 6, wherein the parking valve spool (250) comprises a parking break shoulder (251) and a parking conduction shoulder (252) which are connected, the parking conduction shoulder (252) has a smaller diameter than the parking break shoulder (251), an outer wall of the parking break shoulder (251) abuts against an inner wall of the parking liquid injection chamber (241) for blocking the parking liquid inlet (210);
the length of parking conduction shoulder portion (252) is more than or equal to the axis distance between parking inlet (210) and parking outlet (220), so that when parking inlet (210) and parking outlet (220) all align with parking conduction shoulder portion (252), parking inlet (210) and parking outlet (220) communicate.
8. The parking control system according to claim 6, wherein a secondary parking control cavity (243) is arranged in the parking valve body (240), a secondary parking control port (270) is arranged on the parking valve body (240), the secondary parking control port (270) is communicated with the secondary parking control cavity (243), the parking valve core (250) has a stepped structure in the portion of the secondary parking control cavity (243), the secondary parking control port (270) is communicated with the clutch liquid outlet (120) of the clutch control valve (100), and the parking valve core (250) can be driven by hydraulic pressure in the secondary parking control cavity (243) to enable the parking liquid inlet (210) and the parking liquid outlet (220) to be communicated.
9. A gearbox comprising a parking control system according to any one of claims 1-8.
10. A motor vehicle comprising a transmission according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010110382.9A CN110953337B (en) | 2020-02-24 | 2020-02-24 | Parking control system, gearbox and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010110382.9A CN110953337B (en) | 2020-02-24 | 2020-02-24 | Parking control system, gearbox and car |
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| Publication Number | Publication Date |
|---|---|
| CN110953337A CN110953337A (en) | 2020-04-03 |
| CN110953337B true CN110953337B (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010110382.9A Active CN110953337B (en) | 2020-02-24 | 2020-02-24 | Parking control system, gearbox and car |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3040601A1 (en) * | 1980-10-29 | 1982-05-27 | Alfred Teves Gmbh, 6000 Frankfurt | HYDRAULIC BRAKE SYSTEM WITH A BRAKE-SLIP CONTROL SYSTEM |
| CN106523698B (en) * | 2016-12-30 | 2018-05-11 | 盛瑞传动股份有限公司 | A kind of P keeps off latching control device |
| CN207466631U (en) * | 2017-11-02 | 2018-06-08 | 盛瑞传动股份有限公司 | A kind of electronic parking control system |
| CN207598898U (en) * | 2017-12-06 | 2018-07-10 | 盛瑞传动股份有限公司 | Hydraulic gear-shifting system with parking control function |
| CN110341676A (en) * | 2019-08-01 | 2019-10-18 | 泸州容大智能变速器有限公司 | A kind of automatic gear-box built-in electronic parking control system and its control method |
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