CN103062396A - Parking mechanism and control method applied to automated mechanical transmission (AMT) - Google Patents
Parking mechanism and control method applied to automated mechanical transmission (AMT) Download PDFInfo
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- CN103062396A CN103062396A CN2012105912669A CN201210591266A CN103062396A CN 103062396 A CN103062396 A CN 103062396A CN 2012105912669 A CN2012105912669 A CN 2012105912669A CN 201210591266 A CN201210591266 A CN 201210591266A CN 103062396 A CN103062396 A CN 103062396A
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Abstract
A parking mechanism applied to an automated mechanical transmission (AMT) comprises a transmission control unit (TCU), a P gear sensor and a P gear mechanical execution mechanism. The P gear mechanical execution mechanism comprises a parking motor arranged outside a transmission box body and a transmission mechanism, a parking cam, a parking ratchet wheel and a parking pawl which are arranged inside the transmission box body. A set of P gear parking mechanism is added on a traditional AMT, a P gear control and driving unit is added in the TCU, and accordingly the P gear parking function of the AMT is achieved. The P gear parking mechanism is simple in structure, easy to manufacture, low in cost and convenient to control and can be massively applied to AMTs to achieve parking of the AMTs.
Description
Technical field
The present invention relates to the position control mechanism of speed changer, specifically increase P shelves halting mechanism at the AMT speed changer, realize AMT speed changer P shelves parking function.
Background technique
Automatic transmission is easy to operate, the great convenience of bringing for people's driving, the AMT automatic transmission is to increase corresponding actuator and control unit realization automaitc shfit on the basis of conventional manual speed changer, the AMT speed changer has the high transmission efficiency of manual transmission, good dynamic economics, low cost, the operation convenience that also has automatic transmission simultaneously.
Because the gear shift of selecting of existing AMT is to signal to TCU by electronic gear shifter, action by TCU control motor etc. realizes selecting gear shift, the gear shift operation mechanism of the drag-line as AT, CVT, DCT not, because the restriction of this structure of AMT, existing AMT only has by parking brake when parking and realizes Parking, does not have P shelves parking function.
Summary of the invention
For the structural limitations of AMT speed changer own, there is not the functional characteristics of P shelves Parking, the invention provides halting mechanism and controlling method that a cover is applied to the AMT speed changer, realize the Parking of P shelves by P shelves mechanical actuating mechanism, electronic control unit.
Technological scheme of the present invention is as follows:
A kind of halting mechanism that is applied to the AMT speed changer comprises transmission control unit TCU, P shelves sensor and P shelves mechanical actuating mechanism.Described P shelves mechanical actuating mechanism comprises the Parking motor that is located at the mission case outside, is located at driving mechanism, Parking cam, parking ratchet wheel and park pawl in the mission case.
Described driving mechanism is comprised of a secondary turbine and worm assembly, a gear and a screw rod; The worm screw of described turbine and worm assembly is connected with the Parking motor, and the rotation of motor passes to worm gear by worm screw; Coaxially on the turbine shaft of described turbine and worm assembly be equipped with described gear, described gear and the engagement of described screw rod drive screw rod and move up and down;
The upper end of described screw rod is the Parking cam fixedly, move up and down with screw rod, Parking cam and park pawl one end by the face kinematic pair near, moving up and down of Parking cam changed into the horizontal swing of park pawl by the effect of face kinematic pair;
The teeth groove corresponding matching of parking ratchet wheel excircle on the other end ratchet of described park pawl and the transmission shaft, the centre is connected with mission case by the park pawl pin, and place in the mission case, at the detent pin cover one park pawl return spring is arranged, in this cylindrical hole that park pawl return spring one end is located by connecting on the park pawl, the other end is located by connecting on mission case;
One end of described worm-wheel shaft stretches out mission case and is connected with P shelves sensor, the angle that turns over by P shelves sensor test worm gear, and by electrical signal transfer to transmission control unit TCU, judge the position of P shelves cam, thereby determine when the Parking motor is sent working signal, realize the control of P shelves.
The built-in P shelves of described transmission control unit TCU control module drives port by one and connects the Parking motor, realizes the control of P shelves Parking.
Further, the P shelves controlling method that is applied to the AMT speed changer of above-mentioned halting mechanism is as follows:
1. .P shelves ato unit: after key operation powered on, it was that motor does not start at the P shelves that the P shelves sensor of TCU by halting mechanism detects the speed changer actual-gear, judges that vehicle is at P shelves ato unit state;
Whether TCU detection brake signal and P shelves signal be effective, if an invalidating signal is arranged, speed changer keeps current gear, if signal is effective, TCU detects the speed changer actual-gear, if not at the N shelves, then carry out and hang the instruction of N shelves, until detect actual-gear behind the N shelves, clutch separation, starting electrical machinery work, engine start, selector is withdrawed from the P shelves, remove the Parking state, wait for next shift command;
2.. vehicle power on or the engine start state under, hang the P shelves: after key operation powered on, TCU detects selector P shelves signal, does not hang the shelves into P and detect speed changer by P shelves sensor, then judge be at this moment vehicle power on or the engine start state under, should hang into P shelves state;
Whether effective by TCU detection brake signal and P shelves signal, if above-mentioned signal has an invalidating signal, then keep current gear, if signal is effective, whether then detect the speed changer actual-gear at the N shelves, do not carry out the action of hanging the N shelves at the N shelves, until detect actual-gear behind N, TCU drives halting mechanism and carries out the action of hanging the P shelves, hangs behind the P shelves electricity under the key operation, and clutch is closed.
The present invention is by having increased by a cover P shelves halting mechanism at traditional AMT speed changer, increase the control of P shelves and driver element in the TCU control unit, the P shelves of having realized the AMT speed changer function of parking, this P shelves halting mechanism is simple in structure, be easy to make, cost is low, and control is convenient, can be applied on a large scale the Parking that realizes the AMT speed changer on the AMT speed changer.
Description of drawings
The P shelves mechanical actuating mechanism of Fig. 1 translator;
Fig. 2 has showed the knob style selector that has increased the P shelves;
Fig. 3 has showed the key components and parts schematic representation of actuator;
Fig. 4 has showed P shelves car load control graph of a relation;
Fig. 5,6 has showed the logical flow chart of hanging the P shelves;
Among the figure: 011 angle transducer, 010 parking ratchet wheel, 009 detent pin, 008 ratchet torsion spring,, 007 park pawl, 006 Parking cam, 005 screw rod, 004 gear, 003 worm gear, 002 worm screw, 001 Parking motor.
Embodiment
Further specify structure of the present invention below in conjunction with accompanying drawing:
As shown in Figure 1, P shelves mechanical actuating mechanism provided by the invention comprises the Parking motor 001 that is located at the mission case outside, is located at the worm and gear assembly in the mission case, gear 004, screw rod 005, parking ratchet wheel 010 and park pawl 007.
Described worm and gear assembly is by worm screw 002 and be located at that worm gear 003 forms on the worm-wheel shaft, one end of worm-wheel shaft stretches out mission case and is connected with P shelves sensor 011, the angle that turns over by P shelves sensor test worm gear, and by electrical signal transfer to TCU, judge the position of P shelves cam, thereby determine when the Parking motor is sent working signal, realize successively the control of P shelves.The Parking motor is connected with worm screw, the worm and wheel engagement.
Be coaxially installed with gear 004 on the described worm shaft, with screw rod 005 engagement.Screw rod 005 upper end one is equipped with Parking cam 006, by the gear driven screw rod, thereby drive moving up and down of Parking cam, Parking cam and park pawl 007 1 ends by the face kinematic pair near, moving up and down of Parking cam changed into the horizontal swing of park pawl by the effect of face kinematic pair.
The teeth groove corresponding matching of parking ratchet wheel 010 excircle on the other end ratchet of described park pawl 007 and the transmission shaft.
Described park pawl 007 is connected with mission case by park pawl pin 009, and places in the mission case, and park pawl pin 009 two ends cooperate with pin-and-hole on the casing; At detent pin 009 cover one park pawl return spring 008 is arranged, these park pawl return spring 008 1 ends are located by connecting on the park pawl 007, and the other end is located by connecting in the cylindrical hole of mission case.
The working method of this actuator: Parking motor 001 drives worm screw 002, and then drive turbine 003, effect through turbine shaft and gear 004 drives screw rod 005, thereby drive 006 rotation of Parking cam, drive moving back and forth of park pawl by Parking cam 006 and park pawl 007 1 end in contact, park pawl and parking ratchet wheel 010 effect realize parking function.
Be illustrated in figure 2 as the selector of knob style, whole selector has the gears such as P, R, N, D, triggers corresponding gear by the rotation knob.The knob style selector only could be carried out rotation gear shift action after knob rises, when not needing gear shift, knob is fallen, and the knob style selector can rationally increase and decrease gear and function key according to gear and function needs.
Be illustrated in figure 3 as Parking cam 006 and park pawl 007 motion and stressed relation, by cam and ratchet one end in contact, and torsion spring 008 effect realizes that the extension of P shelves enters and disengaging.
Be illustrated in figure 4 as the graph of a relation of whole P shelves, at first knob selector input P shelves request, transmission control unit is judged changing to P shelves condition, when condition satisfies: the speed of a motor vehicle=0km/h, brake signal is effective, and selector is in the situation of P shelves, carry out the request of hanging the P shelves, transmission control unit input driving request is to the Parking control unit, and Parking control unit drive motor is carried out gear shift request, and the car load instrument obtains current gear information from transmission control unit simultaneously; Do not satisfy the condition of hanging the P shelves if TCU detects, then do not carry out and hang the action of P shelves, keep current gear.
Fig. 5 and Figure 6 shows that AMT speed changer P shelves Parking control logic flow chart.
As shown in Figure 5, hang in the P shelves situation ato unit.At first key operation powers on, TCU detects brake signal, whether P file location signal is effective, if do not satisfy above-mentioned condition, speed changer can keep current gear, if satisfying TCU, condition can detect the speed changer actual-gear, if not at the N shelves, then carry out and hang the instruction of N shelves, until detect actual-gear behind the N shelves, clutch separation, starting electrical machinery work, engine start is waited for next action command.
As shown in Figure 6, vehicle power on or starting state under, hang the P shelves.At first key operation powers on, TCU detects brake signal, and P file location signal, above-mentioned signal have an invalidating signal, then keep current gear, if signal is effective, whether then detect the speed changer actual-gear at the N shelves, do not carry out the action of hanging the N shelves at the N shelves, until detect actual-gear behind N, TCU control motor is carried out the action of hanging the P shelves, hangs such as electricity under the key operation behind the P shelves, and clutch is closed.
Claims (2)
1. a halting mechanism that is applied to the AMT speed changer comprises transmission control unit TCU, P shelves sensor and P shelves mechanical actuating mechanism; It is characterized in that: described P shelves mechanical actuating mechanism comprises the Parking motor that is located at the mission case outside, is located at driving mechanism, Parking cam, parking ratchet wheel and park pawl in the mission case;
Described driving mechanism is comprised of a secondary turbine and worm assembly, a gear and a screw rod; The worm screw of described turbine and worm assembly is connected with the Parking motor, and the rotation of motor passes to worm gear by worm screw; Coaxially on the turbine shaft of described turbine and worm assembly be equipped with described gear, described gear and the engagement of described screw rod drive screw rod and move up and down;
The upper end of described screw rod is the Parking cam fixedly, move up and down with screw rod, Parking cam and park pawl one end by the face kinematic pair near, by the just horizontal swing of level that moves up and down and change park pawl into of Parking cam of effect of face kinematic pair;
The other end ratchet of described park pawl and the teeth groove corresponding matching of the parking ratchet wheel excircle on the transmission shaft, be connected with mission case by the park pawl pin in the middle of the park pawl, and place in the mission case, at the detent pin cover one park pawl return spring is arranged, this park pawl return spring one end is located by connecting on the park pawl, and the other end is located by connecting in the cylindrical hole of mission case;
One end of described worm-wheel shaft stretches out mission case and is connected with P shelves sensor, the angle that turns over by P shelves sensor test worm gear, and by electrical signal transfer to transmission control unit TCU, judge the position of P shelves cam, thereby determine when the Parking motor is sent working signal, realize the control of P shelves;
The built-in P shelves of described transmission control unit TCU control module drives port by one and connects the Parking motor, realizes the control of P shelves Parking.
2. the method for the P shelves control that is applied to the AMT speed changer of halting mechanism claimed in claim 1, it is characterized in that: described controlling method is as follows:
1. .P shelves ato unit: after key operation powered on, it was that motor does not start at the P shelves that the P shelves sensor of TCU by halting mechanism detects the speed changer actual-gear, judges that vehicle is at P shelves ato unit state;
Whether TCU detection brake signal and P shelves signal be effective, if an invalidating signal is arranged, speed changer keeps current gear, if signal is effective, TCU detects the speed changer actual-gear, if not at the N shelves, then carry out and hang the instruction of N shelves, until detect actual-gear behind the N shelves, clutch separation, starting electrical machinery work, engine start, selector is withdrawed from the P shelves, remove the Parking state, wait for next shift command;
2.. vehicle power on or the engine start state under, hang the P shelves: after key operation powered on, TCU detected selector at the P shelves, does not hang the shelves into P and detect speed changer by P shelves sensor, then judge be at this moment vehicle power on or the engine start state under, should hang into P shelves state;
Whether effective by TCU detection brake signal and P shelves signal, if above-mentioned signal has an invalidating signal, then keep current gear, if signal is effective, whether then detect the speed changer actual-gear at the N shelves, do not carry out the action of hanging the N shelves at the N shelves, until detect actual-gear behind the N shelves, TCU drives halting mechanism and carries out the action of hanging the P shelves, hangs behind the P shelves electricity under the key operation, and clutch is closed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210591266.9A CN103062396B (en) | 2012-12-29 | 2012-12-29 | A kind of halting mechanism being applied to AMT variator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210591266.9A CN103062396B (en) | 2012-12-29 | 2012-12-29 | A kind of halting mechanism being applied to AMT variator |
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| CN103062396A true CN103062396A (en) | 2013-04-24 |
| CN103062396B CN103062396B (en) | 2016-12-28 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697157A (en) * | 2013-12-23 | 2014-04-02 | 盛瑞传动股份有限公司 | Parking braking pawl of automatic gearbox |
| CN103759001A (en) * | 2014-02-06 | 2014-04-30 | 北京阳铭诚科技有限责任公司 | Electric vehicle parking device |
| CN104149612A (en) * | 2014-04-30 | 2014-11-19 | 浙江吉利控股集团有限公司 | Electronic parking mechanism of double-clutch speed changer |
| CN105090397A (en) * | 2014-05-21 | 2015-11-25 | 丰田自动车株式会社 | Power transmitting system of a vehicle |
| CN106481814A (en) * | 2015-09-02 | 2017-03-08 | 广州汽车集团股份有限公司 | Electric automobile gear device and its halting mechanism |
| CN106641243A (en) * | 2017-02-28 | 2017-05-10 | 南京越博动力系统股份有限公司 | Auxiliary parking mechanism for automated manual transmission/electric-drive mechanical transmission (AMT/EMT) and parking method of auxiliary parking mechanism |
| CN107687515A (en) * | 2016-08-04 | 2018-02-13 | 欧瑞康格拉齐亚诺股份公司 | The actuating unit and vehicle transmission gear being controlled to the Angle Position of control member |
| CN109130848A (en) * | 2018-10-19 | 2019-01-04 | 赣州经纬科技股份有限公司 | A kind of two grades of speed change electric drive assemblies of new-energy automobile |
| CN112128370A (en) * | 2019-06-25 | 2020-12-25 | 浙江吉智新能源汽车科技有限公司 | Reduction gear parking mechanism and vehicle |
| CN113043852A (en) * | 2021-04-02 | 2021-06-29 | 联合汽车电子有限公司 | Electronic parking system, vehicle control system and vehicle |
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| JP2010007823A (en) * | 2008-06-30 | 2010-01-14 | Aisin Seiki Co Ltd | Gear locking device |
| CN102562330A (en) * | 2010-12-28 | 2012-07-11 | 上海汽车集团股份有限公司 | Control method for realizing automatic stop and automatic start of engine |
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| CN102343815A (en) * | 2011-07-22 | 2012-02-08 | 重庆长安汽车股份有限公司 | Fault control method for plug-in automobile electronic gear |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697157A (en) * | 2013-12-23 | 2014-04-02 | 盛瑞传动股份有限公司 | Parking braking pawl of automatic gearbox |
| CN103759001A (en) * | 2014-02-06 | 2014-04-30 | 北京阳铭诚科技有限责任公司 | Electric vehicle parking device |
| CN104149612A (en) * | 2014-04-30 | 2014-11-19 | 浙江吉利控股集团有限公司 | Electronic parking mechanism of double-clutch speed changer |
| CN104149612B (en) * | 2014-04-30 | 2016-08-31 | 宁波上中下自动变速器有限公司 | Double-clutch speed changer electronic parking mechanism |
| CN105090397A (en) * | 2014-05-21 | 2015-11-25 | 丰田自动车株式会社 | Power transmitting system of a vehicle |
| CN106481814A (en) * | 2015-09-02 | 2017-03-08 | 广州汽车集团股份有限公司 | Electric automobile gear device and its halting mechanism |
| CN106481814B (en) * | 2015-09-02 | 2018-03-16 | 广州汽车集团股份有限公司 | Electric automobile gear device and its halting mechanism |
| CN107687515B (en) * | 2016-08-04 | 2020-12-08 | 达纳格拉齐亚诺有限责任公司 | Actuating unit for controlling angular position of control member and vehicle transmission |
| CN107687515A (en) * | 2016-08-04 | 2018-02-13 | 欧瑞康格拉齐亚诺股份公司 | The actuating unit and vehicle transmission gear being controlled to the Angle Position of control member |
| CN106641243A (en) * | 2017-02-28 | 2017-05-10 | 南京越博动力系统股份有限公司 | Auxiliary parking mechanism for automated manual transmission/electric-drive mechanical transmission (AMT/EMT) and parking method of auxiliary parking mechanism |
| CN109130848A (en) * | 2018-10-19 | 2019-01-04 | 赣州经纬科技股份有限公司 | A kind of two grades of speed change electric drive assemblies of new-energy automobile |
| CN112128370A (en) * | 2019-06-25 | 2020-12-25 | 浙江吉智新能源汽车科技有限公司 | Reduction gear parking mechanism and vehicle |
| CN113043852A (en) * | 2021-04-02 | 2021-06-29 | 联合汽车电子有限公司 | Electronic parking system, vehicle control system and vehicle |
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| CN103062396B (en) | 2016-12-28 |
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