CN101101058B - Deceleration dependent shift control - Google Patents
Deceleration dependent shift control Download PDFInfo
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- CN101101058B CN101101058B CN2007101118852A CN200710111885A CN101101058B CN 101101058 B CN101101058 B CN 101101058B CN 2007101118852 A CN2007101118852 A CN 2007101118852A CN 200710111885 A CN200710111885 A CN 200710111885A CN 101101058 B CN101101058 B CN 101101058B
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Abstract
A derailleur control system for adjusting automatic derailleur of vehicle, including: a first module, to provide prescribed shift specification of upshift line and downshift line; a second module, to make each of the upshift line and downshift line to migrate by certain offset so as to provide modified upshift line and downshift line, a third module, to adjust the automatic derailleur according to the modified upshift line and downshift line.
Description
The cross reference of related application
The application requires the provisional application submitted on June 20th, 2006 number to be No.60/815, the interests of 147 U. S. Patent.Be incorporated herein by reference in this disclosure this provisional application.
Technical field
The present invention relates to have by the dynamical system of torque converter, relate to the relevant gear shift control of deceleration that is used for automatic transmission more especially by oil-engine driven automatic transmission.
Background technique
Description in these chapters and sections only provides background information related to the present invention, and it does not constitute prior art.
Vehicle powertrain generally includes prime mover, internal-combustion engine for example, and it is by the coupling arrangement drive speed transmission.In some cases, speed changer comprises by the automatic transmission of torque converter by prime mover driven.This speed changer doubles than the driving torque that makes motor by the gear of expectation, and the driving torque that doubles is passed to transmission system with propelled vehicles.
Control module is according to the operation of vehicle operating parameter adjustment speed changer, and this operating parameter includes but not limited to car speed and throttle valve position.More specifically, control module comprises and is used to control the predetermined gear shift line that shifts up and lower category.
In some cases, vehicle for example can be slowed down apace, to avoid collision or it is stopped fast.When vehicle deceleration, several incidents may take place simultaneously, it includes but not limited to, and suspension moves, axle is rolled and transmission downshifts.In some cases, the power transmission system that transmission downshifts may cause not expecting is disturbed, and the form of this interference is the vibration of noise (for example clunk that can hear) and/or power transmission system.
Summary of the invention
Therefore, the invention provides a kind of control system of speed variator of operation of the automatic transmission that is used to adjust vehicle.This control system of speed variator comprises: first module is used to provide the predetermined gear shift standard that comprises the shift-up line and lower category line; With second module, be used for when the retardation of described vehicle surpasses threshold value retardation, make described shift-up line and each of the line that lowers category all be offset certain side-play amount, with the shift-up line that modification is provided and the line that lowers category.Three module is adjusted the operation of described automatic transmission according to the shift-up line of described modification and the line that lowers category.
In a feature, described control system of speed variator also comprises four module, is used for determining described side-play amount according to the current gear ratio of described automatic transmission and at least one of described retardation.
In another feature, described side-play amount is the fixed amount of being scheduled to.
In another feature, described second module stores lower category car speed of line of basis, and when current car speed is lower than described basis and lowers category the car speed of line, described side-play amount is set at zero.
In another feature, when carrying out the step of described skew, described second module starts timer, and when described timer reaches threshold time, described side-play amount is set at zero.
In another feature, when throttle valve position surpassed the threshold value throttle valve position, described second module was set at zero with described side-play amount.
In another feature, the described second module monitors car speed is when described car speed makes described side-play amount towards zero attenuation when described shift-up line is passed in post acceleration.Described second module makes described side-play amount decay according to a decrement.Described decrement is the fixed value of being scheduled to.Replacedly, described decrement is determined according to the acceleration of described vehicle.
Can understand suitable other zone from the description that provides here.Should be appreciated that this description and particular instance are only used for illustrative purposes, rather than in order to limit the scope of the invention.
Description of drawings
Accompanying drawing described herein only is illustrative purpose, rather than in order to limit the scope of the invention by any way.
Fig. 1 is the theory diagram of example vehicle dynamical system, and this dynamical system can be adjusted according to the relevant gear shift control of deceleration of the present invention;
Fig. 2 shows the plotted curve of the exemplary gear shift line that is used for exemplary automatic transmission;
Fig. 3-5 shows the plotted curve of exemplary gear shift line among Fig. 2, and this gear shift line comprises exemplary offset gear shift line that the gear shift control relevant with deceleration of the present invention is consistent and the example vehicle manipulation of carrying out in modes of deflection;
Fig. 6 is the flow chart by the illustrative steps of overspeed protection control execution of the present invention; And
Fig. 7 is a theory diagram of carrying out the example modules of overspeed protection control of the present invention.
Embodiment
Following description of preferred embodiments only is exemplary, and it is not in order to limit the present invention and application thereof or purposes.For the sake of clarity, use identical reference number to represent similar element in the accompanying drawings.As used herein, term module is represented processor (shared, special-purpose or grouping) and storage, the combinational logic circuit of application-specific IC (ASIC), electronic circuit, the one or more softwares of execution or firmware program or other suitable components of desired function is provided.
With reference now to Fig. 1,, the exemplary dynamical system 10 that illustrates comprises motor 12, and this motor is by torque converter 16 drive speed transmission 14.More specifically, air is inhaled into the intake manifold of motor 12 by throttle valve 20.Make air and fuel mix, and at this air/fuel mixture of cylinder 22 internal combustion, thereby reciprocally drive the piston (not shown) in the cylinder 22.Piston rotatably drives the bent axle (not shown) so that driving torque to be provided.The waste gas that combustion process produces is discharged from motor by gas exhaust manifold 26.Although show 4 cylinders, should be appreciated that the present invention can implement in having the vehicle of any amount of cylinder.
Driving torque is transmitted with drive speed transmission 14 by torque converter 16.This speed changer 14 makes driving torque double with the gear ratio of expectation, thereby the driving torque of modification is provided.The driving torque of this modification is delivered to the vehicle driveline (not shown) by transmission output shaft 28.As described in further detail below, speed changer 14 comprises according to car speed (V
VEH) and throttle valve position and the automatic transmission of automaitc shfit.
With reference now to Fig. 2,, control module 30 is according to throttle valve position (being TPS) and V
VBHRegulate the gear ratio of speed changer 14.More specifically, control module 30 comprises a plurality of based on V
VEHWith the shift-up line of programming in advance of TPS and the line that lowers category, this TPS measures as the percentage of throttle valve opening.As TPS and/or V
VEHWhen one of crossing in the gear shift line, the corresponding gear shift of control module 30 indications.In the exemplary graph of Fig. 2, for 4 exemplary gear transmissions provide the shift-up line and the line that lowers category.The exemplary line that lowers category comprises 2-1,3-2, the 4-3 line that lowers category.Exemplary shift-up line comprises 1-2,2-3,3-4 shift-up line.What these gear shift lines also comprised torque converter clutch (TCC) applies line and release wire.For example, if V
VEHBe per hour 20 kilometers (kph) that TPS is 25%, then automatic transmission is on second gear (gear).If V
VEHReduce the line that lowers category through 2-1, throttle valve percentage reduces or remains unchanged simultaneously, then from second gear, first gear that lowers category.Similarly, if V
VEHIncrease through 2-3 shift-up line, then from second gear third gear that shifts up.
With reference now to Fig. 3,, the retardation that the gear shift that deceleration of the present invention is relevant is controlled according to vehicle (is V
VEH) be offset the gear shift line provisionally.More specifically, can determine the acceleration (a of vehicle according to transmission output shaft signal (TOSS)
VEH), and monitor continuously.If a
VEHBear, then vehicle is considered to slowing down.In addition, if a
VEHLess than threshold acceleration (a
THR) (promptly than a
THRMuch negative), the gear shift control of then slowing down relevant enters modes of deflection, and makes lower category line and shift-up line (seeing dotted line) skew.For example, at the some A place of Fig. 3, V
VEHBe approximately 32kph, and speed changer is on the fourth speed position.Vehicle slows down fast towards a B.In response to this quick deceleration, make the skew of gear shift line.Although should be noted that only to show the single line that lowers category that is offset, can envision all shift-up lines and all be offset with the line that lowers category.
Side-play amount is the fixed value (for example 4kph) of being scheduled to or according to a
VEHAnd/or current gear is determined.For example, if it is very fast to slow down, bigger when then side-play amount is slower than deceleration.Replacedly or additionally, this skew can be based on current gear ratio.For example, if vehicle is slowing down, then skew is bigger, and speed changer is in higher gear rather than handles lower gear.
When entering modes of deflection, deceleration shifting control can be stored original or the basis lowers category line (for example 2-1), and start skew timer t
OFFSETWork as t
OFFSETReach threshold time (t
THR) when (for example 5 seconds), when TPS surpasses TPS threshold value (TPS
THR) or work as V
VEHBe reduced to the basis and lower category line (for example initial 2-1 lower category line) when following, withdraw from modes of deflection.For example, work as V
VEHSome B towards Fig. 3 moves, and the 2-1 that crosses the basis withdraws from modes of deflection when lowering category line, and all skews is arranged to zero (that is, all the shift-up line and the line that lowers category get back to normality).Especially with reference to figure 4, when TPS surpasses TPS
THRThe time, the 2-1 line that lowers category even without crossing the basis also withdraws from modes of deflection.
With reference now to Fig. 5,, if at a
VEHAnd V
VEHOccur during increase suddenly oppositely then making skew decay to zero in time.In the exemplary manipulation shown in Fig. 5, a
VEHBe enough to enter modes of deflection, yet, at V
VEHLower category line and lower category to first gear V of the 2-1 that crosses skew
VEHTo increase suddenly.Work as V
VEHWhen moving, deviant will decay towards the shift-up line of skew.In other words, work as V
VEHWhen moving, deviant decays and becomes to make the shift-up line that is offset effectively towards V towards the shift-up line of skew
VEHMove.For example, on the 1-2 of full migration shift-up line (for example, being offset 4kph) from first gear, second gear that shifts up.(for example skew decay to less than 4kph) is from second gear third gear that shifts up below the 2-3 of full migration shift-up line.Making skew continue decay with predetermined decrement is 0kph up to skew.Can envision, decrement is the fixed amount of being scheduled to, and perhaps works as V
VEHWhen the shift-up line is passed in post acceleration according to a
VEHDetermine.
With reference now to Fig. 6,, describes the illustrative steps of carrying out by the gear shift control of slowing down relevant in detail.In step 600, a is determined in control
VEHWhether less than quickening threshold value (a
THR).If a
VEHLess than a
THR, vehicle is slowed down fully and entering modes of deflection, control proceeds to step 602 then.If a
VEHBe not less than a
THR, vehicle is slowed down fully and enters modes of deflection, and control is returned.In step 602, control enters modes of deflection, and makes the shift-up line and lower category the line skew.As discussing in detail in the above, the gear shift line can be offset fixing amount, and perhaps side-play amount can be according to current gear ratio and/or a
VEHDetermine.Control starts t in step 604
OFFSET
In step 606, V is determined in control
VEHWhether cross the 2-1 original or basis the line (V that lowers category
BASE2-1), if V
VEHCrossed V
BASE2-1, then control proceeds to step 608.If V
VEHAlso do not cross V
BASE2-1, determine in the control step 610 that then whether TPS is greater than TPS
THRIf TPS is greater than TPS
THR, then control proceeds to step 608.If TPS is not more than TPS
THR, then determine t in the control step 612
OFFSETWhether greater than t
THRIf t
OFFSETGreater than t
THR, then control proceeds to step 608.If t
OFFSETBe not more than t
THR, then control proceeds to step 614.In step 608, by being zero with offset setting, modes of deflection is withdrawed from control, and control finishes.
In step 614, V is determined in control
VEHWhether pass shift-up line (referring to Fig. 5) to post acceleration.If V
VEHDo not pass the shift-up line to post acceleration, then being controlled at increases t in the step 616
OFFSET, and turn back to step 604.If V
VEHPass the shift-up line to post acceleration, then, make control withdraw from modes of deflection, and control finishes by making skew decay to zero with predetermined decrement.As described above, decrement can be the amount of fixing, a in the time of perhaps can quickening according to vehicle
VEHDetermine.
With reference now to Fig. 7,, describes the example modules of carrying out the gear shift control of slowing down relevant in detail.This example modules comprises gear shift wire gauge model module 700, offset module 702, side-play amount module 704 and transmission control module 706.Gear shift wire gauge model module 700 comprises predetermined or normal gear shift line.Offset module 702 makes the skew of gear shift line according to the input from each module, and provides the information that is offset the gear shift line to transmission control module 706, and this transmission control module can be adjusted the operation of speed changer.Side-play amount module 704 is according to a
VEHDetermine deviant with current gear, this current gear is provided by transmission control module 706.
By carrying out transmission downshifts earlier in deceleration, the relevant gear shift control of deceleration of the present invention can suppress the interference of power transmission system in vehicle deceleration process fast.In this way, deceleration event can not appear other vehicular events (for example, axle winding, suspension dynamic event or the like) time.Other advantage of the gear shift control of slowing down relevant is, it is recently said so for any gear and works, and has the various standards that withdraw from, thereby provides improved flexibility in the process of implementing control.
Those skilled in the art can understand from top description that the present invention instructs widely and can implement with various forms now.Therefore, although described the present invention and particular instance thereof, true scope of the present invention should not be limited to this, studied accompanying drawing, specification and below claim the time, other modification is apparent to those skilled in the art.
Claims (30)
1. the control system of speed variator of the operation of an automatic transmission that is used to adjust vehicle comprises:
First module is used to provide the predetermined gear shift standard that comprises the shift-up line and lower category line;
Second module is used for when the retardation of described vehicle surpasses threshold value retardation, makes described shift-up line and each of the line that lowers category all be offset certain side-play amount, with the shift-up line that modification is provided and the line that lowers category;
Three module is used for adjusting according to the shift-up line of described modification and the line that lowers category the operation of described automatic transmission.
2. control system of speed variator as claimed in claim 1 also comprises four module, is used for determining described side-play amount according to the current gear ratio of described automatic transmission and at least one of described retardation.
3. control system of speed variator as claimed in claim 1, wherein said side-play amount are the fixed amounts of being scheduled to.
4. control system of speed variator as claimed in claim 1, wherein said second module stores lower category car speed of line of basis, and when current car speed is lower than described basis and lowers category the car speed of line, described side-play amount is set at zero.
5. control system of speed variator as claimed in claim 1, wherein when carrying out the step of described skew, described second module starts timer, when described timer reaches threshold time described side-play amount is set at zero.
6. control system of speed variator as claimed in claim 1, wherein when throttle valve position surpassed the threshold value throttle valve position, described second module was set at zero with described side-play amount.
7. control system of speed variator as claimed in claim 1, the wherein said second module monitors car speed when described car speed quickens to pass the shift-up line of described modification, makes described side-play amount towards zero attenuation.
8. control system of speed variator as claimed in claim 7, wherein said second module makes described side-play amount decay according to a decrement.
9. control system of speed variator as claimed in claim 8, wherein said decrement are the fixed values of being scheduled to.
10. control system of speed variator as claimed in claim 8, wherein said decrement is determined according to the acceleration of described vehicle.
11. a method of operating that is used to adjust the automatic transmission of vehicle comprises:
The predetermined gear shift standard that comprises the shift-up line and lower category line is provided;
When the deceleration rate of described vehicle surpasses the threshold value deceleration rate, make described shift-up line and each of the line that lowers category all be offset certain side-play amount, with the shift-up line that modification is provided and the line that lowers category;
Adjust the operation of described automatic transmission according to the shift-up line of described modification and the line that lowers category.
12. method as claimed in claim 11 also comprises according to the current gear ratio of described automatic transmission and at least one in the described deceleration rate and determines described side-play amount.
13. method as claimed in claim 11, wherein said side-play amount are the fixed amounts of being scheduled to.
14. method as claimed in claim 11 also comprises:
The car speed of the basic line that lowers category of storage;
When current car speed is lower than described basis and lowers category the car speed of line, described side-play amount is set at zero.
15. method as claimed in claim 11 also comprises:
When carrying out the step of described skew, start timer; And
When described timer reaches threshold time, described side-play amount is set at zero.
16. method as claimed in claim 11 also comprises when throttle valve position surpasses the threshold value throttle valve position described side-play amount being set at zero.
17. method as claimed in claim 11 also comprises:
Monitoring vehicle speed; And
When described car speed quickens to pass the shift-up line of described modification, make described side-play amount towards zero attenuation.
18. method as claimed in claim 17 wherein realizes described decay according to decrement.
19. method as claimed in claim 18, wherein said decrement are the fixed values of being scheduled to.
20. method as claimed in claim 18, described decrement is determined according to the acceleration of described vehicle.
21. a method of operating that is used to adjust the automatic transmission of vehicle comprises:
Monitor the acceleration of described vehicle;
The predetermined gear shift standard that comprises the shift-up line and lower category line is provided;
By making described shift-up line and each of line of lowering category all is offset certain side-play amount and enters modes of deflection, with the shift-up line that modification is provided according to described acceleration and the line that lowers category;
Adjust the operation of described automatic transmission according to the shift-up line of described modification and the line that lowers category; And
When existing, in a plurality of exit criterias at least one withdraw from described modes of deflection.
22. method as claimed in claim 21, also comprise according to the current gear of described automatic transmission than and the deceleration rate of described vehicle at least one determine described side-play amount.
23. method as claimed in claim 21, wherein said side-play amount are the fixed amounts of being scheduled to.
24. method as claimed in claim 21 also comprises the lower category car speed of line of storage basis, wherein when current car speed is lower than described basis and lowers category the car speed of line, the described step that withdraws from comprises described side-play amount is set at zero.
25. method as claimed in claim 21 also comprises starting timer when carrying out the step of described skew, wherein when described timer reaches threshold time, described withdraw from step comprise described side-play amount is set at zero.
26. method as claimed in claim 21, wherein when throttle valve position surpasses the threshold value throttle valve position, the described step that withdraws from comprises described side-play amount is set at zero.
27. method as claimed in claim 21 also comprises monitoring vehicle speed, wherein when described car speed quickens to pass the shift-up line of described modification, the described step that withdraws from comprises and makes described side-play amount towards zero attenuation.
28. method as claimed in claim 27 wherein realizes described decay according to a decrement.
29. method as claimed in claim 28, wherein said decrement are the fixed values of being scheduled to.
30. method as claimed in claim 28, described decrement is determined according to the acceleration of described vehicle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US81514706P | 2006-06-20 | 2006-06-20 | |
| US60/815147 | 2006-06-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101101058A CN101101058A (en) | 2008-01-09 |
| CN101101058B true CN101101058B (en) | 2010-06-02 |
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ID=39035463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101118852A Expired - Fee Related CN101101058B (en) | 2006-06-20 | 2007-06-20 | Deceleration dependent shift control |
Country Status (1)
| Country | Link |
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| CN (1) | CN101101058B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927763A (en) * | 2009-06-23 | 2010-12-29 | 通用汽车环球科技运作公司 | Upshift control of automatic speed changer with negative input torque |
| DE102012208155B4 (en) * | 2012-05-15 | 2021-05-06 | Bayerische Motoren Werke Aktiengesellschaft | Method and device for performing a downshift |
| KR101724505B1 (en) * | 2016-03-29 | 2017-04-07 | 현대자동차 주식회사 | Apparatus and method for shift control of vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1135586A (en) * | 1995-03-31 | 1996-11-13 | 奔驰公司 | Shifting curve periodic matching method for automatic gear-shifting box of automobile |
-
2007
- 2007-06-20 CN CN2007101118852A patent/CN101101058B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1135586A (en) * | 1995-03-31 | 1996-11-13 | 奔驰公司 | Shifting curve periodic matching method for automatic gear-shifting box of automobile |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2001-165306A 2001.06.22 |
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