CN103671618A - Clutch actuator assembly for vehicle automatic transmission - Google Patents
Clutch actuator assembly for vehicle automatic transmission Download PDFInfo
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- CN103671618A CN103671618A CN201210352459.9A CN201210352459A CN103671618A CN 103671618 A CN103671618 A CN 103671618A CN 201210352459 A CN201210352459 A CN 201210352459A CN 103671618 A CN103671618 A CN 103671618A
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- clutch
- solenoid valve
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
Disclosed is a clutch actuator assembly for a vehicle automatic transmission. Functions of the assembly comprises that before vehicle automatic gear shifting, a transmission control unit (ECU) controls a gas solenoid valve on the clutch actuator to achieve clutch separation before vehicle gear shifting; after the whole vehicle gear shifting, the TCU controls operation states of the gas solenoid valve and a flow proportional solenoid valve simultaneously to control the moving speed of a hydraulic piston assembly, and the hydraulic piston assembly in the clutch actuator restores to the state before separation according to control characteristics to achieve slow combination state of the clutch after vehicle gear shifting. The assembly is characterized in that three states of quick separation, slow combination and half separation and half combination of the clutch are achieved by controlling the operation states of the gas solenoid valve and the flow proportional solenoid valve. According to the hydraulic piston assembly, a Glyd ring and support ring sealing mode is used, so that pollution of hydraulic pressure in a hydraulic cylinder is prevented; the hydraulic piston assembly and an air cylinder piston assembly are connected through a piston rod, so that the part machining process is enhanced, and the reliability and the service life of products are guaranteed.
Description
One, technical field
The present invention relates to a kind of clutch executor assembly for automatic gearbox.
Two, background technique
At present, vehicle automatic transmission has become one of important directions of automotive engineering development, and AMT automatic transmission and other automatic transmission relatively have the following advantages: mechanical transmission, and transmission efficiency is high, cost is low, be easy to manufacture; Be mainly used in motorbus and heavy truck.And at present the heavy truck of automatic transmission is not also equipped with in China, in order to fill up this blank and to win the market of this respect, developed AMT electrical control actuator.
In traditional clutch actuator, adopt separately air pressure or hydraulic control, use separately air pressure to control, be difficult to realize slow combination, half separated half hitch closes control, need separately add control valve piece; Use separately hydraulic control to need to provide in addition power source, economical poor; And additional valve piece, power source all need to take the certain installing space of vehicle body, increase external environment impact.
In common clutch actuator assembly, piston adopts 0 shape circle sealing means, is subject to radial force effect during piston movement, and housing and piston surface of contact do not carry out any processing, cause Al-alloy casing easily to wear and tear, system sealing effect is influenced, causes product reliably poor, and system is easily polluted.
Three, summary of the invention
The present invention adopts displacement transducer to gather piston movable signal mode, solves air pressure and controls and need add the problem that odd-side control valve piece, hydraulic control need additionaling power source; The present invention also relies on self-energy conversion to produce power, provides a kind of effectively solenoidoperated cluthes to open the clutch actuator that three kinds of states are closed in separation, slow combination, half separated half hitch.
(1) working principle
Clutch actuator assembly, is comprised of gas solenoid valve (1), flow proportional solenoid valve (2), displacement transducer (3), dust-proof cover (4), cover plate (5), cylinder piston assembly (6), spring (7), housing assembly (8), hydraulic piston assembly (9), bonnet (10), magnet carrier (11), sensor magnet ring (12), magnet plug (13), sensor stand (14), piston rod (15), connecting rod (16), dust-proof cover (17) component.
Working principle is: as Fig. 1, shown in Fig. 2, pressurized air enters housing assembly (8) by gas solenoid valve (1), when car load needs clutch to realize separated state, ECU (Electrical Control Unit) TCU sends to obtain electrical signal to the gas solenoid valve (1) of installing on clutch actuator assembly, after gas solenoid valve (1) energising, realize action, pressurized air is injected to clutch actuator assembly cylinder, promoting cylinder piston assembly (6) moves to left, now, cylinder piston assembly (6) makes to produce pressure in hydraulic pressure A while moving to left, because oil hydraulic cylinder A and oil hydraulic cylinder B do not give in electric situation at flow proportional solenoid valve (2), be in UNICOM's state, so hydraulic oil flows to oil hydraulic cylinder B in oil hydraulic cylinder A, hydraulic piston assembly (9) moves to left under the drive of piston rod (15), realizes the fast separating action of clutch.Be arranged on sensor magnet ring (12) magnetic that the displacement transducer (3) on sensor stand (14) is arranged in magnet carrier (11) by impression and judge clutch movement position.
When normal need clutch engages, when sending power-off signal to gas solenoid valve (1), ECU (Electrical Control Unit) TCU obtains electrical signal to flow proportional solenoid valve (2), after gas solenoid valve (1) power-off, in car load, clutch retraction springs is transferred in oil hydraulic cylinder B elastic force by connecting rod (16), oil hydraulic cylinder B produces pressure, now in hydraulic pressure B, hydraulic oil need to flow to oil hydraulic cylinder A, TCU obtains the dutycycle of electrical signal by controlling flow proportional solenoid valve (2), control flow proportional solenoid valve (2) openings of sizes is controlled hydraulic oil and from oil hydraulic cylinder B, is flowed to the flow velocity of oil hydraulic cylinder A, thereby it is slow in action to realize clutch.
In car load, need clutch when half separated half hitch closes state, ECU (Electrical Control Unit) TCU is by suitable time-oriented sequential control, first give gas solenoid valve (1) energising, displacement transducer (3) induction clutch position, and Real-time Feedback is to TCU, TCU judges whether clutch arrives half separated half hitch chalaza position; If in-position, gives flow proportional solenoid valve fully energized, make oil hydraulic cylinder A and oil hydraulic cylinder B in disconnecting state, oil hydraulic cylinder A belongs to closed state, and hydraulic oil cannot flow, and piston stops at fixed position, realizes the separated half hitch of clutch half and closes state.
In sum, by the working state of gas solenoid valve (1) and flow proportional solenoid valve (2) on TCU solenoidoperated cluthes final controlling element assembly, separated, slow combination, half separated half hitch close three kinds of states, the working state requirement to clutch while meeting Vehicle Driving Cycle soon to realize clutch.
(2) summary of the invention
In this clutch actuator assembly: adopt air pressure, hydraulic separate cylinder control mode, pneumatic cylinder solenoidoperated cluthes separating action, oil hydraulic cylinder is controlled clutch joint action, therefore high to the sealing requirements of pneumatic cylinder, oil hydraulic cylinder, cylinder adopts Y shape circle to add support ring sealing means, support ring can effectively absorb the impact that is subject to radial force in piston movement, avoids Y shape circle to cause uneven wear to lose efficacy because being subject to radial force; Oil hydraulic cylinder adopts Glais ring to add support ring mode.Oil hydraulic cylinder, cylinder are used support ring all to adopt PTFE material wear-resistant ring, support ring plays good wear-resisting effect between piston and housing, also there is accurate leading role, and can absorb radial force, avoid piston directly to contact with housing simultaneously, but adopt, nonmetally directly contacted with housing, reduced friction factor, greatly improve the wear resistance of product, guaranteed reliability and the working life of product.And due to the centering effect of support ring, support ring allows there is larger gap between piston, housing; Therefore piston, housing adopt Spielpassung, reduce difficulty of processing, improve technology capability, and inner walls is used hard anodized to process, guarantee that the surface hardness of cylinder and piston relative movement improves, make cylinder inner wall be not easy to be scratched and to damage, hard anodized guarantees inwall range after processing, reduce friction and improved the wear-resisting property of moving parts, making part movement more smooth and easy, the life-span is longer; Interchangeability of parts is improved a lot, be applicable to batch production.
In this clutch actuator assembly: adopt gas solenoid valve, flow proportional solenoid valve to jointly control pattern, utilize displacement transducer Real-time Feedback piston displacement signal, by time-oriented sequential control gas solenoid valve, flow proportional solenoid valve power on/off state, can be that clutch actuator piston assembly moves to specified position.After clutch compressing disc, release bearing wearing and tearing, clutch separation point, binding site, half separated half hitch chalaza produce drift, affect the stationarity in Vehicle Driving Cycle process; Before this clutch actuator assembly needs only vehicle launch, TCU carries out self study, and separator separation point, binding site, half separated half hitch chalaza are again identified by displacement transducer value of feedback mode and remembered in the CPU of TCU, the separation point, binding site, the half separated half hitch chalaza that when accurately solenoidoperated cluthes are worked again, need, the stationarity of assurance Vehicle Driving Cycle process.
In this clutch actuator assembly: as shown in Figure 3, cylinder piston assembly, hydraulic piston assembly adopt piston rod Placement; That cylinder stroke and hydraulic cylinder travel are consistent.Cylinder piston assembly utilizes circlip for shaft to be fixed on piston rod, and hydraulic piston assembly adopts half-round clamping ring to be fixed on the specified position of piston rod.Guarantee that cylinder piston assembly, the relative position of hydraulic piston assembly on piston rod remain unchanged; By piston rod Placement, control hydraulic piston assembly, the movement travel of cylinder piston assembly is consistent.Adopt the piston assembly of half-round clamping ring fixed hydraulic simultaneously, because cylinder diameter is less, while causing hydraulic piston general assembly, there is certain difficulty, but half-round clamping ring matching requirements are lower, as long as half-round clamping ring is fixed in the mounting groove of piston rod, just can fixed piston position, solve assembly space hour, piston installation question.
Four, accompanying drawing explanation
Can comprehend the present invention from the detailed description and the accompanying drawings below, in the accompanying drawings:
Fig. 1 is schematic diagram of the present invention, is mainly used to illustrate between oil hydraulic cylinder A and B to be by flow proportional solenoid valve, to realize minute cylinder to control, and gas solenoid valve is controlled pneumatic cylinder piston; TCU controls the working state of gas solenoid valve, flow proportional solenoid valve, realizes clutch separation, bonding state.
Fig. 2 is structural representation gas solenoid valve of the present invention (1), flow proportional solenoid valve (2), displacement transducer (3), retaining ring (4), cover plate (5), cylinder piston assembly (6), spring (7), housing assembly (8), hydraulic piston assembly (9), bonnet (10), magnet carrier (11), sensor magnet ring (12), magnet plug (13), sensor stand (14), piston rod (14), connecting rod (16), dust-proof cover (17).
Fig. 3 is cylinder piston assembly of the present invention and hydraulic piston assembly connection diagram cylinder piston assembly (6), circlip for shaft (18), piston rod (15), half-round clamping ring (19), hydraulic piston assembly (9), circlip for shaft (20), 7. band annular groove half-round clamping ring (21).
five, specific embodiment
As shown in Figure 2, gas solenoid valve (1), flow proportion valve (2), cover plate (5), bonnet (10), piston rod (15) is arranged on housing assembly (8), piston rod (15) is by cylinder piston assembly (6), hydraulic piston assembly (9) is fixed together, spring (7), magnet carrier (11) is arranged on cylinder piston assembly (6), sensor magnet ring (12), magnet plug (13) is arranged in magnet carrier (11), sensor stand (14) is fixed on bonnet (10), displacement transducer (3) is arranged on sensor stand (14), dust-proof cover (17), retaining ring (4) is fixed on cover plate (5) together, connecting rod (17) links together with piston rod (15).In hydraulic cylinder, fill with hydraulic oil, and guarantee under the saturated prerequisite of oil-filled amount of hydraulic oil, by gas solenoid valve (1), controlling pressurized air enters in the pneumatic cylinder of housing assembly (8), when car load needs clutch to realize separated state, ECU (Electrical Control Unit) TCU sends to obtain electrical signal to the gas solenoid valve (1) of installing on clutch actuator assembly, after gas solenoid valve (1) energising, realize action, pressurized air is injected to clutch actuator assembly cylinder, promoting cylinder piston assembly (6) moves to left, now, cylinder piston assembly (6) makes hydraulic oil in oil hydraulic cylinder A produce pressure (oil hydraulic cylinder A while moving to left, oil hydraulic cylinder B as shown in Figure 1), because oil hydraulic cylinder A and oil hydraulic cylinder B do not give in electric situation at flow proportional solenoid valve (2), be in UNICOM's state, so hydraulic oil flows to oil hydraulic cylinder B in oil hydraulic cylinder A, hydraulic piston assembly (9) moves to left under the drive of piston rod (15), realizes the fast separating action of clutch.Be arranged on sensor magnet ring (12) magnetic that the displacement transducer (3) on sensor stand (14) is arranged in magnet carrier (11) by impression and judge clutch movement position.
When normal need clutch engages, when sending power-off signal to gas solenoid valve (1), ECU (Electrical Control Unit) TCU obtains electrical signal to flow proportional solenoid valve (2), after gas solenoid valve (1) power-off, in car load, clutch retraction springs is transferred in oil hydraulic cylinder B elastic force by connecting rod (16), oil hydraulic cylinder B produces pressure, now in hydraulic pressure B, hydraulic oil need to flow to oil hydraulic cylinder A, TCU obtains the dutycycle of electrical signal by controlling flow proportional solenoid valve, control flow proportional solenoid valve openings of sizes is controlled hydraulic oil and from oil hydraulic cylinder B, is flowed to the flow velocity of oil hydraulic cylinder A, thereby it is slow in action to realize clutch.
In car load, need clutch when half separated half hitch closes state, ECU (Electrical Control Unit) TCU is by suitable time-oriented sequential control, first give gas solenoid valve (1) energising, displacement transducer (3) induction clutch position, and Real-time Feedback is to TCU, TCU judges whether clutch arrives half separated half hitch chalaza position; If in-position, gives flow proportional solenoid valve fully energized, make oil hydraulic cylinder A and oil hydraulic cylinder B in disconnecting state, oil hydraulic cylinder A belongs to closed state, and hydraulic oil cannot flow, and piston stops at fixed position, realizes the separated half hitch of clutch half and closes state.
Six, beneficial effect
According to the present invention, AMT system is designed with clutch actuator, adopt pneumatic and hydraulic united controlled mode, wherein hydraulic control adopts flow proportional solenoid valve to realize proportional control.Solved air pressure and controlled and to be difficult to realize proportional control, hydraulic control need separately add a difficult problem for power source, can meet the little and clutch separation of the relative installing space of automobile in conjunction with technical requirements stably.
This system processing cost is low, reduces processing technology difficulty, improves the reliability of product.
Claims (5)
1. a clutch actuator assembly, is comprised of gas solenoid valve (1), flow proportional solenoid valve (2), displacement transducer (3), dust-proof cover (4), cover plate (5), cylinder piston assembly (6), spring (7), housing assembly (8), hydraulic piston assembly (9), bonnet (10), magnet carrier (11), sensor magnet ring (12), magnet plug (13), sensor stand (14), piston rod (15), connecting rod (16), dust-proof cover (17) component.It is characterized in that: pneumatic and hydraulic united controlled clutch mode, gas solenoid valve (1) solenoidoperated cluthes are separated, and the pressure that flow proportion valve (2) produces according to cylinder moving is realized proportional control clutch bonding state as power source.
2. clutch actuator according to claim 1, is characterized in that: the sealing requirements of cylinder piston assembly (6), hydraulic piston assembly (9) is 0 leakage.
3. clutch actuator according to claim 1, it is characterized in that: adopt position transducer (3), the current vehicular clutch platen of Real-time Collection position, and collection value is fed back to car load control unit TCU, TCU controls the working state of gas solenoid valve (1), flow proportional solenoid valve (2) according to value of feedback, realize that clutch separation, clutch engage, the separated half hitch of clutch half closes three kinds of states.
4. according to patent, require the clutch actuator described in 2, it is characterized in that: cylinder piston assembly (6) adopts Y-shaped ring to add support ring sealing, hydraulic piston assembly (9) adopts Glais ring to add support ring sealing, solve hydraulic oil pollution problem and avoid radial force to affect piston movement, improving interchangeablity.
5. according to patent, require the clutch actuator described in 3, it is characterized in that: cylinder piston assembly (6) adopts piston rod (15) Placement with hydraulic piston assembly (9), guarantees product processing technique.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210352459.9A CN103671618A (en) | 2012-09-21 | 2012-09-21 | Clutch actuator assembly for vehicle automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210352459.9A CN103671618A (en) | 2012-09-21 | 2012-09-21 | Clutch actuator assembly for vehicle automatic transmission |
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| Publication Number | Publication Date |
|---|---|
| CN103671618A true CN103671618A (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210352459.9A Pending CN103671618A (en) | 2012-09-21 | 2012-09-21 | Clutch actuator assembly for vehicle automatic transmission |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090274A (en) * | 2014-05-20 | 2015-11-25 | 徐延明 | Clutch for aircraft carrier catapult |
| CN107387593A (en) * | 2017-09-02 | 2017-11-24 | 吉林大学 | Motor-direct-drive type clutch electric-controlled hydraulic executing agency and its control method |
| CN109632298A (en) * | 2018-12-25 | 2019-04-16 | 人本集团有限公司 | Clutch bearing adds unloading test system |
| CN110094437A (en) * | 2019-04-10 | 2019-08-06 | 东风商用车有限公司 | A kind of clutch Bit andits control sluggishness removing method |
| CN110392793A (en) * | 2017-03-15 | 2019-10-29 | 沃尔沃卡车集团 | Method for disconnecting valve cell from the actuator devices of pneumatic control |
| CN113074195A (en) * | 2021-03-25 | 2021-07-06 | 陕西法士特齿轮有限责任公司 | Gas circuit structure of clutch actuating mechanism and gearshift and speed changer |
| CN113710910A (en) * | 2019-04-16 | 2021-11-26 | 克诺尔商用车制动系统有限公司 | Position detection unit, clutch actuator having position detection unit, and vehicle clutch having position detection unit |
| CN115370671A (en) * | 2022-08-05 | 2022-11-22 | 青岛科麟智传汽车科技有限公司 | Central clutch driving system and starting control method thereof |
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| CN201162793Y (en) * | 2007-11-16 | 2008-12-10 | 东风汽车有限公司 | Pneumatic AMT clutch control mechanism |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105090274A (en) * | 2014-05-20 | 2015-11-25 | 徐延明 | Clutch for aircraft carrier catapult |
| CN110392793A (en) * | 2017-03-15 | 2019-10-29 | 沃尔沃卡车集团 | Method for disconnecting valve cell from the actuator devices of pneumatic control |
| US10859129B2 (en) | 2017-03-15 | 2020-12-08 | Volvo Truck Corporation | Method for disconnecting a valve unit from a pneumatically controlled actuator arrangement |
| CN110392793B (en) * | 2017-03-15 | 2020-12-29 | 沃尔沃卡车集团 | Method for disconnecting a valve unit from a pneumatically controlled actuator device |
| CN107387593A (en) * | 2017-09-02 | 2017-11-24 | 吉林大学 | Motor-direct-drive type clutch electric-controlled hydraulic executing agency and its control method |
| CN109632298A (en) * | 2018-12-25 | 2019-04-16 | 人本集团有限公司 | Clutch bearing adds unloading test system |
| CN110094437A (en) * | 2019-04-10 | 2019-08-06 | 东风商用车有限公司 | A kind of clutch Bit andits control sluggishness removing method |
| CN113710910A (en) * | 2019-04-16 | 2021-11-26 | 克诺尔商用车制动系统有限公司 | Position detection unit, clutch actuator having position detection unit, and vehicle clutch having position detection unit |
| CN113710910B (en) * | 2019-04-16 | 2024-02-23 | 克诺尔商用车制动系统有限公司 | Position detection unit, clutch regulator with position detection unit and vehicle clutch with position detection unit |
| CN113074195A (en) * | 2021-03-25 | 2021-07-06 | 陕西法士特齿轮有限责任公司 | Gas circuit structure of clutch actuating mechanism and gearshift and speed changer |
| CN113074195B (en) * | 2021-03-25 | 2022-09-13 | 陕西法士特齿轮有限责任公司 | Gas circuit structure of clutch actuating mechanism and gearshift and speed changer |
| CN115370671A (en) * | 2022-08-05 | 2022-11-22 | 青岛科麟智传汽车科技有限公司 | Central clutch driving system and starting control method thereof |
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Application publication date: 20140326 |