CN103821919B - The cooling flow controlling method of dual-clutch transmission and system - Google Patents
The cooling flow controlling method of dual-clutch transmission and system Download PDFInfo
- Publication number
- CN103821919B CN103821919B CN201410098269.8A CN201410098269A CN103821919B CN 103821919 B CN103821919 B CN 103821919B CN 201410098269 A CN201410098269 A CN 201410098269A CN 103821919 B CN103821919 B CN 103821919B
- Authority
- CN
- China
- Prior art keywords
- cooling flow
- cooling
- clutch
- flow
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
Abstract
The invention discloses a kind of cooling flow controlling method and system of dual-clutch transmission, method comprises: obtain the work of slipping of first clutch, the work of slipping of second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture every the sampling period of setting; According to the work of slipping of the work of slipping of first clutch, second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtain the expectation cooling flow flowing through the cooling oil of double clutch; Adjust flux valve, and make the flow of the cooling oil of double clutch and expect that the difference of cooling flow is in the margin of error set.This patent utilizes the gentle gearshift of clutch work of slipping, double clutch oil temperature and gear box oil jointly to determine the double clutch cooling flow expected, the cooling flow that take into account system all sidedly controls the equilibrium relation with lubrication, be conducive to according to actual conditions, rightly for double clutch provides appropriate cooling flow, avoid supercooling and lubricate insufficient adverse effect.
Description
Technical field
The present invention relates to automatic gearbox of vehicles technical field, particularly relate to a kind of cooling flow controlling method and system of dual-clutch transmission.
Background technique
Typical wet-type double-clutch automatic speed-change case is primarily of hardware compositions such as oil pump, wet-type dual-clutch, electronic control system, hydraulic system and gears.Wet-type double-clutch automatic speed-change case comprises first clutch (also referred to as outer clutch), second clutch (also referred to as internal clutch), outer input shaft and interior input shaft, the outer input shaft be wherein connected with first clutch controls odd number shelves gear, in being connected with second clutch, input shaft controls even number shelves gear and reverse gear, by each gear of electronic control system and HYDRAULIC CONTROL SYSTEM combination be separated.During gear shift, meshed gears runs out of steam by clutch, and another clutch makes the gear of pre-engagement obtain power simultaneously.Realize continuous transferring power by the alternation of first clutch and second clutch, there is the advantage that gear shift is smooth-going, efficiency is high, travelling comfort is good.
Current wet-type double-clutch automatic speed-change case does not carry out the function of cooling flow control for double clutch, can not consider the operating mode of car load actual motion.But, in the normal running process of car load, when engine peed stable is at a certain rotating speed, the fuel-displaced total amount of oil pump is certain, the total amount of the cooling oil namely flowing through double clutch and the cooling oil flowing through gear is certain, while the flow of the cooling oil flowing through double clutch increases, the flow flowing through the cooling oil of gear will reduce relatively, if do not consider that the operating mode of car load actual motion just carries out assignment of traffic, just probably cause the cold oil hypovolia distributing to double clutch or the cold oil hypovolia distributing to gear, thus cause the sliding wear degree of first clutch or second clutch driving disc and driven disc larger, or the lubrication of gear is insufficient, while affecting the working life of clutch and gear, reduce the Security that car load is driven.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of cooling flow controlling method and system of dual-clutch transmission.
For achieving the above object, technological scheme of the present invention is:
A cooling flow controlling method for dual-clutch transmission, comprising:
The work of slipping of first clutch, the work of slipping of second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture is obtained every the sampling period of setting;
According to the work of slipping of the work of slipping of described first clutch, second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtain the expectation cooling flow flowing through the cooling oil of described double clutch;
Adjust flux valve, and make the difference of the flow of the cooling oil of described double clutch and described expectation cooling flow in the margin of error set.
Preferably, the expectation cooling flow that described acquisition flows through the cooling oil of described double clutch comprises:
According to the work of slipping of described first clutch and the work of slipping of second clutch, obtain the first cooling flow flowing through the cooling oil of described double clutch;
According to described gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtain the second cooling flow flowing through the cooling oil of described double clutch;
Determine quasiexpectation cooling flow, and make described quasiexpectation cooling flow be maximum value in described first cooling flow and described second cooling flow;
Limit value process is carried out to described quasiexpectation cooling flow, and determine the quasiexpectation cooling flow after limit value process for described in flow through the expectation cooling flow of the cooling oil of described double clutch.
Preferably, the second cooling flow that described acquisition flows through the cooling oil of described double clutch comprises:
According to the described speed of a motor vehicle and gas pedal aperture, obtain the target gear of gearbox;
Judge whether described gearbox-gear equals described target gear;
If not, then carry out gear-change operation, and determine that described second cooling flow is 0;
If so, then according to the time dependent relation curve of flow of all second cooling flow determined in the time period set before current sample time and setting, described second cooling flow is determined.
Preferably, all second cooling flow determined in the described time period according to setting before current sample time and the time dependent relation curve of flow of setting, determine that described second cooling flow comprises:
According to the second cooling flow all in the time period set before current sample time, the first moment of the second cooling flow described relation curve finding the last sampling instant of corresponding current sample time determine;
Determined for the second moment, and equaled sampling period that described first moment adds described setting in described second moment;
Determine that described second cooling flow equals the flow in corresponding described second moment on described relation curve.
Preferably, described relation curve is trapezoidal wave.
Preferably, describedly determine that quasiexpectation cooling flow specifically comprises:
The temperature of the temperature flowing through the cooling oil of double clutch and the cooling oil flowing through gearbox gear is obtained every the sampling period of described setting;
According to the temperature of the described temperature flowing through the cooling oil of double clutch and the cooling oil flowing through gearbox gear, obtain the 3rd cooling flow flowing through the cooling oil of described double clutch;
Determine that described quasiexpectation cooling flow is the maximum value in described first cooling flow, described second cooling flow and described 3rd cooling flow.
A cooling flow control system for dual-clutch transmission, comprising:
Data acquisition unit, for obtaining the work of slipping of first clutch, the work of slipping of second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture every the sampling period of setting;
Expect cooling flow determining unit, for the work of slipping of the work of slipping according to described first clutch, second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtain the expectation cooling flow flowing through the cooling oil of described double clutch;
Regulon, for adjust flux valve, and makes the difference of the flow of the cooling oil of described double clutch and described expectation cooling flow in the margin of error set.
Preferably, described expectation cooling flow determining unit comprises:
First cooling flow determining unit, for according to the work of slipping of described first clutch and the work of slipping of second clutch, obtains the first cooling flow flowing through the cooling oil of described double clutch;
Second cooling flow determining unit, for according to described gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtains the second cooling flow flowing through the cooling oil of described double clutch;
Quasiexpectation cooling flow determining unit, for determining quasiexpectation cooling flow, and makes described quasiexpectation cooling flow be maximum value in described first cooling flow and the second cooling flow;
Limit value processing unit, for carrying out limit value process to described quasiexpectation cooling flow, and determine the quasiexpectation cooling flow after limit value process for described in flow through the expectation cooling flow of the cooling oil of described double clutch.
Preferably, described second cooling flow determining unit comprises:
Target gear determining unit, for according to the described speed of a motor vehicle and gas pedal aperture, obtains the target gear of gearbox;
Gear shift judging unit, for judging whether described gearbox-gear equals described target gear;
First determining unit, under described gearbox-gear and the unequal situation of described target gear, determines that described second cooling flow is 0;
Second determining unit, for when described gearbox-gear is equal with described target gear, according to the time dependent relation curve of flow of all second cooling flow determined in the time period set before current sample time and setting, determine described second cooling flow.
Preferably, described second determining unit comprises:
First moment determining unit, for according to the second cooling flow all in the time period set before current sample time, the first moment of the second cooling flow described relation curve finding the last sampling instant of corresponding current sample time determine;
Second moment determining unit, for determining for the second moment, and makes described second moment equal in sampling period that described first moment adds described setting;
3rd determining unit, for determining that described second cooling flow equals the flow in corresponding described second moment on described relation curve.
Preferably, described relation curve is trapezoidal wave.
Preferably, described data acquisition unit also for: obtain the temperature flowing through the cooling oil of double clutch and the temperature of cooling oil flowing through gearbox gear every the sampling period of described setting;
Described system also comprises the 3rd cooling flow determining unit, for flowing through the temperature of the cooling oil of double clutch described in basis and flowing through the temperature of cooling oil of gearbox gear, obtains the 3rd cooling flow flowing through the cooling oil of described double clutch;
Described quasiexpectation cooling flow determining unit specifically for: determine that described quasiexpectation cooling flow is the maximum value in described first cooling flow, the second cooling flow and the 3rd cooling flow.
Beneficial effect of the present invention is, the cooling flow controlling method of embodiment of the present invention dual-clutch transmission:
(1) clutch work of slipping, double clutch oil temperature and TOT Transmission Oil Temperature and gearshift three aspect is utilized jointly to determine the double clutch cooling flow expected, the cooling flow that take into account system all sidedly controls the equilibrium relation with lubrication, be conducive to according to actual conditions, rightly for double clutch provides appropriate cooling flow, avoid supercooling and lubricate insufficient adverse effect;
(2) be conducive in gearshift procedure, possessing enough gear shift pressure, avoid clutch cooling flow in gearshift procedure to control the impact on gear shift pressure;
(3) extend the working life of double clutch, add gearbox and car load drive safety.
Accompanying drawing explanation
Fig. 1 shows the flow chart of the cooling flow controlling method of embodiment of the present invention dual-clutch transmission;
Fig. 2 shows the flow chart obtaining in the embodiment of the present invention and flow through the flow of the cooling oil of described double clutch;
Fig. 3 shows the flow chart obtaining in the embodiment of the present invention and flow through the second cooling flow of the cooling oil of described double clutch;
Fig. 4 shows the schematic diagram of relation curve in the embodiment of the present invention;
Fig. 5 shows in the embodiment of the present invention flow chart determining described second cooling flow;
Fig. 6 shows in the embodiment of the present invention flow chart determining quasiexpectation cooling flow;
Fig. 7 shows the structural representation of the cooling flow control system of embodiment of the present invention dual-clutch transmission;
Fig. 8 shows in the embodiment of the present invention structural representation expecting cooling flow determining unit;
Fig. 9 shows the structural representation of the second cooling flow determining unit in the embodiment of the present invention;
Figure 10 shows the structural representation of the second determining unit in the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
The cooling flow controlling method of embodiment of the present invention dual-clutch transmission, clutch work of slipping, double clutch oil temperature and TOT Transmission Oil Temperature and gearshift three aspect is utilized jointly to determine the double clutch cooling flow expected, the cooling flow that take into account system all sidedly controls the equilibrium relation with lubrication, be conducive to according to actual conditions, rightly for double clutch provides appropriate cooling flow, avoid supercooling and lubricate insufficient adverse effect.
As shown in Figure 1, be the cooling flow controlling method of the flow chart of the cooling flow controlling method of embodiment of the present invention dual-clutch transmission, described dual-clutch transmission, comprise the following steps:
Step 101: obtain the work of slipping of first clutch, the work of slipping of second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture every the sampling period of setting.
Particularly, first, the formula of the work of slipping of clutch, known by those skilled in the art, belongs to prior art, repeats no more in this article.In addition, gearbox-gear can directly read from gearbox control, and the speed of a motor vehicle can read from entire car controller, and gas pedal aperture can be obtained by the position transducer being arranged on gas pedal place.
Step 102: according to the work of slipping of the work of slipping of described first clutch, second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtain the expectation cooling flow flowing through the cooling oil of described double clutch.
Particularly, five parameters such as the work of slipping of the first clutch that above-mentioned basis gets, obtain the method flowing through the expectation cooling flow of the cooling oil of double clutch, will set forth in detail by composition graphs 2 hereinafter.
Step 103: adjust flux valve, and make the difference of the flow of the cooling oil of described double clutch and described expectation cooling flow in the margin of error set.
Particularly, after getting the expectation cooling flow of the cooling oil flowing through double clutch, system can regulate for the Flow valve of control flow check through the cooling oil flow of double clutch, progressively the flow (reading by flowmeter) flowing through the cooling oil of double clutch is adjusted to described expectation cooling flow, concrete regulating method can regulate by adoption rate, integral adjustment, differential regulates, PID regulating method etc., above-mentioned regulating method is the controlling method that those skilled in the art's routine adopts, repeat no more in this article, the parameter related in controlling method can adjust according to concrete requirement.In addition, those skilled in the art can set corresponding margin of error according to concrete requirement.
As shown in Figure 2, be obtain the flow chart flowing through the flow of the cooling oil of described double clutch in the embodiment of the present invention, described acquisition flows through the expectation cooling flow of the cooling oil of described double clutch, comprises the following steps:
Step 201: according to the work of slipping of described first clutch and the work of slipping of second clutch, obtains the first cooling flow flowing through the cooling oil of described double clutch.
Particularly, first cooling flow is preferably by acquisition of tabling look-up, wherein comprise the bivariate table of the work of slipping of first clutch and the work of slipping of second clutch and the first cooling flow corresponding relation, known by those skilled in the art, demarcate by limited number of time experiment, repeat no more in this article.
Step 202: according to described gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtains the second cooling flow flowing through the cooling oil of described double clutch.
Particularly, above-mentioned according to gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtain the method flowing through the second cooling flow of the cooling oil of described double clutch, will set forth in detail by composition graphs 3 to Fig. 5 hereinafter.
Step 203: determine quasiexpectation cooling flow, and make described quasiexpectation cooling flow be maximum value in described first cooling flow and the second cooling flow.
Step 204: limit value process is carried out to described quasiexpectation cooling flow, and determine the quasiexpectation cooling flow after limit value process for described in flow through the expectation cooling flow of the cooling oil of described double clutch.
Particularly, first, the method that quasiexpectation cooling flow carries out limit value process is comprised:
Judge whether described quasiexpectation cooling flow is more than or equal to the cooling flow lower limit of setting and is less than or equal to the cooling flow upper limit of setting, if so, then determines that described quasiexpectation cooling flow is the quasiexpectation cooling flow after described limit value process;
Further, when the cooling flow that described quasiexpectation cooling flow is greater than setting is prescribed a time limit, determine that the quasiexpectation cooling flow after limit value process is the cooling flow upper limit;
Under quasiexpectation cooling flow is less than the cooling flow of setting in limited time, determine that the quasiexpectation cooling flow after limit value process is cooling flow lower limit.Especially, the described cooling flow upper limit is preferably 23L/min, and described cooling flow lower limit is preferably 0L/min.
Quasiexpectation cooling flow after determining limit value process, by the quasiexpectation cooling flow after limit value process for described in flow through the expectation cooling flow of the cooling oil of described double clutch.
In the present embodiment, get maximum value among the first cooling flow and the second cooling flow as quasiexpectation cooling flow, fully can ensure the driving disc of first clutch or second clutch and the sliding wear degree of driven disc like this, also consider the operating mode of car load actual motion simultaneously.
As shown in Figure 3, be obtain the flow chart flowing through the second cooling flow of the cooling oil of described double clutch in the embodiment of the present invention, the second cooling flow that described acquisition flows through the cooling oil of described double clutch comprises the following steps:
Step 301: according to the described speed of a motor vehicle and gas pedal aperture, obtains the target gear of gearbox.
Particularly, the target gear of gearbox, preferably by acquisition of tabling look-up, wherein comprises the bivariate table of the target gear corresponding relation of the speed of a motor vehicle and gas pedal aperture and gearbox, known by those skilled in the art, demarcate by limited number of time experiment, repeat no more in this article.
Step 302: judge whether described gearbox-gear equals described target gear.
Particularly, judge that double clutch gearbox will consider the state of two clutches the need of gear shift, be responsible for transmitting torque if current by first clutch, then determine that the gear of first clutch is the gear of double clutch gearbox, i.e. described gearbox-gear; In like manner, be responsible for transmitting torque if current by second clutch, then determine that the gear of second clutch is the gear of double clutch gearbox, i.e. described gearbox-gear.
Step 303: if described gearbox-gear and described target gear unequal, then carry out gear-change operation, and determine that described second cooling flow is 0.
Particularly, when described gearbox-gear and described target gear unequal time, when namely current double clutch gearbox needs gear shift, then carry out gear-change operation, make gearbox-gear switch to target gear, described second cooling flow is set to 0 simultaneously.Due to needs gear shift, consider that the driving disc of first clutch or second clutch and the sliding wear degree of driven disc increase, so now system considers sliding wear degree completely, cooling oil is delivered in large quantities double clutch cooling branch road, the heat effectively reducing sliding wear degree and produced by sliding wear, extends the working life of double clutch; Meanwhile, be conducive in gearshift procedure, possessing enough gear shift pressure, avoid clutch cooling flow in gearshift procedure to control the impact on gear shift pressure.
Step 304: if described gearbox-gear is equal with described target gear, then according to the time dependent relation curve of flow of all second cooling flow determined in the time period set before current sample time and setting, determine described second cooling flow.
Particularly, when gearbox-gear is equal with described target gear, system suitably can reduce the flow of the cooling oil of double clutch cooling branch road, thus suitably can increase the flow of the cooling oil flowing through gearbox gear, thus on the basis ensureing clutch sliding wear degree, ensure the lubrication effect of gearbox gear.In addition, determine the method for described second cooling flow, by composition graphs 4 and Fig. 5 set forth in detail hereinafter.
As shown in Figure 4, be the schematic diagram of relation curve in the embodiment of the present invention, this relation curve is obtained through long time test by inventor, and object is to obtain suitable expectation cooling flow, to meet system requirements.Particularly, described relation curve is one group of trapezoidal wave, and abscissa represents, y coordinate represents flow, t is 0L/min for the minimum value of flow, from minimum value to the rise time of maximum value 4L/min be 1.5s, then maintain maximum value 1s, then drop to 0L/min from maximum value 4L/min, fall time is 1.5s, minimum value maintains 1s, and then carries out above-mentioned rising from minimum value to maximum value, by that analogy.
As shown in Figure 5, it is the flow chart determining described second cooling flow in the embodiment of the present invention, all second cooling flow determined in the described time period according to setting before current sample time and the time dependent relation curve of flow of setting, determine that described second cooling flow comprises the following steps:
Step 401: according to the second cooling flow all in the time period set before current sample time, the first moment of the second cooling flow described relation curve finding the last sampling instant of corresponding current sample time determine.Especially, the time period of described setting should be greater than the time that relation curve maintains same value.
Step 402: determined for the second moment, and equaled sampling period that described first moment adds described setting in described second moment;
Step 403: determine that described second cooling flow equals the flow in corresponding described second moment on described relation curve.
Illustrate the deterministic process of the second cooling flow below, such as setting the described time period is 1.5s, the setting sampling period is 0.5s, if all second cooling flow determined in 1.5s before acquisition current sample time are 0, then as can be seen from the relation curve shown in Fig. 4, t in a upper sampling instant corresponding relation curve of current sample time, thus the t+0.5 moment in current sample time corresponding relation curve can be inferred, and then can to obtain the flow in corresponding t+0.5 moment in relation curve according to the correlation computations formula of similar triangles be 4/3L/min, namely determine that the second cooling flow of current sample time is 4/3L/min.
In another embodiment of the invention, in the process of calculation expectation cooling flow, not only consider the impact of clutch work of slipping and gearshift, also take into account the impact of double clutch temperature and temp. of gear-shifting box, thus make the expectation cooling flow got more meet the actual conditions of car load operation.
As shown in Figure 6, be the flow chart determining quasiexpectation cooling flow in another preferred embodiment of the present invention, describedly determine that the method for quasiexpectation cooling flow specifically comprises and step:
Step 501: the temperature obtaining the temperature flowing through the cooling oil of double clutch and the cooling oil flowing through gearbox gear every the sampling period of described setting.
In detail, for obtaining the temperature flowing through the cooling oil of double clutch, temperature transducer is arranged on external casing corresponding to double clutch lower left side edge (from gearbox viewed from motor axial direction), double clutch outside distributed uniform small pores in one week, work flows through double clutch cooling oil when rotating can sputter on temperature transducer, temperature transducer flows through the temperature of the cooling oil of double clutch with collecting thus, also referred to as double clutch temperature; In like manner, for obtaining the temperature flowing through the cooling oil of gearbox gear, temperature transducer is arranged on the main casing inwall of gear box oil housing bottom (from gearbox toward motor axial direction, oil sump is positioned on the left of gearbox), this temperature transducer is immersed in fluid always, temperature transducer can collect the temperature of the cooling oil flowing through gearbox gear thus, also referred to as temp. of gear-shifting box.
Step 502: according to the temperature of the described temperature flowing through the cooling oil of double clutch and the cooling oil flowing through gearbox gear, obtain the 3rd cooling flow flowing through the cooling oil of described double clutch.
Particularly, the temperature difference of the temperature flowing through the cooling oil of double clutch described in first calculating and the cooling oil temperature flowing through gearbox gear, then preferably by acquisition the 3rd cooling flow of tabling look-up, wherein comprise the one dimension table of described temperature difference and the 3rd cooling flow corresponding relation, known by those skilled in the art, demarcate by limited number of time experiment, repeat no more in this article.
Step 503: determine that described quasiexpectation cooling flow is the maximum value in described first cooling flow, the second cooling flow and the 3rd cooling flow.
In the present embodiment, get maximum value among the first cooling flow, the second cooling flow and the 3rd cooling flow as quasiexpectation cooling flow, fully can ensure the driving disc of first clutch or second clutch and the sliding wear degree of driven disc like this, also consider the operating mode of car load actual motion simultaneously, specifically comprise gearshift and double clutch temperature and temp. of gear-shifting box.
To sum up, the cooling flow controlling method of embodiment of the present invention wet-type double-clutch automatic speed-change case, utilize clutch work of slipping, double clutch oil temperature and TOT Transmission Oil Temperature, gearshift three aspect jointly determine expect double clutch cooling flow, the cooling flow that take into account system all sidedly controls the equilibrium relation with lubrication, be conducive to according to actual conditions, just right provide appropriate cooling flow for double clutch, avoid supercooling and lubricate insufficient adverse effect.
Particularly, the cooling flow of double clutch needs to regulate according to actual conditions, under the operating modes such as the starting under heavy load, long-time upward slope, double clutch is often in sliding wear working state, a large amount of heats can be produced, now need to strengthen cooling flow, protection double clutch; And under the operating mode of suburb, gear shift frequency is low, it is low that double clutch produces heat, now suitably can reduce the cooling flow for double clutch.Therefore, according to actual conditions, double clutch cooling flow is controlled, be conducive to extending clutch and gearbox working life.
In addition, the cooling flow controlling method of wet-type double-clutch automatic speed-change case of the present invention, by gear detected state determination clutch cooling flow, be conducive in gearshift procedure, possessing enough gear shift pressure, avoid clutch cooling flow in gearshift procedure to control the impact on gear shift pressure.
Further, the cooling flow controlling method of wet-type double-clutch automatic speed-change case of the present invention, extend the working life of double clutch, add gearbox and car load drive safety.
Correspondingly, the embodiment of the present invention also provides a kind of cooling flow control system of dual-clutch transmission, as shown in Figure 7, is the structural representation of this system.
In this embodiment, the cooling flow control system of described dual-clutch transmission comprises:
Data acquisition unit 601, for obtaining the work of slipping of first clutch, the work of slipping of second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture every the sampling period of setting;
Expect cooling flow determining unit 602, for the work of slipping of the work of slipping according to described first clutch, second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtain the expectation cooling flow flowing through the cooling oil of described double clutch;
Regulon 603, for adjust flux valve, and makes the difference of the flow of the cooling oil of described double clutch and described expectation cooling flow in the margin of error set.
As shown in Figure 8, be the structural representation expecting cooling flow determining unit 602 in the embodiment of the present invention.Described expectation cooling flow determining unit 602 comprises:
First cooling flow determining unit 701, for according to the work of slipping of described first clutch and the work of slipping of second clutch, obtains the first cooling flow flowing through the cooling oil of described double clutch;
Second cooling flow determining unit 702, for according to described gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtains the second cooling flow flowing through the cooling oil of described double clutch;
Quasiexpectation cooling flow determining unit 703, for determining quasiexpectation cooling flow, and makes described quasiexpectation cooling flow be maximum value in described first cooling flow and the second cooling flow;
Limit value processing unit 704, for carrying out limit value process to described quasiexpectation cooling flow, and determine the quasiexpectation cooling flow after limit value process for described in flow through the expectation cooling flow of the cooling oil of described double clutch.
As shown in Figure 9, be the structural representation of the second cooling flow determining unit 702 in the embodiment of the present invention, described second cooling flow determining unit 702 comprises:
Target gear determining unit 801, for according to the described speed of a motor vehicle and gas pedal aperture, obtains the target gear of gearbox;
Gear shift judging unit 802, for judging whether described gearbox-gear equals described target gear;
First determining unit 803, under described gearbox-gear and the unequal situation of described target gear, determines that described second cooling flow is 0;
Second determining unit 804, for when described gearbox-gear is equal with described target gear, carry out gear-change operation, and according to the time dependent relation curve of flow of all second cooling flow determined in the time period set before current sample time and setting, determine described second cooling flow.
As shown in Figure 10, be the structural representation of the second determining unit 804 in the embodiment of the present invention, described second determining unit 804 comprises:
First moment determining unit 901, for according to the second cooling flow all in the time period set before current sample time, the first moment of the second cooling flow described relation curve finding the last sampling instant of corresponding current sample time determine;
Second moment determining unit 902, for determining for the second moment, and makes described second moment equal in sampling period that described first moment adds described setting;
3rd determining unit 903, for determining that described second cooling flow equals the flow in corresponding described second moment on described relation curve.
Preferably, described relation curve is trapezoidal wave.
In another preferred embodiment of the present invention, described data acquisition unit 601 also for: obtain the temperature flowing through the cooling oil of double clutch and the temperature of cooling oil flowing through gearbox gear every the sampling period of described setting.
Described system also comprises the 3rd cooling flow determining unit, for flowing through the temperature of the cooling oil of double clutch described in basis and flowing through the temperature of cooling oil of gearbox gear, obtains the 3rd cooling flow flowing through the cooling oil of described double clutch.
Described quasiexpectation cooling flow determining unit 703 specifically for: determine that described quasiexpectation cooling flow is the maximum value in described first cooling flow, the second cooling flow and the 3rd cooling flow.
The concrete processing procedure of above-mentioned each unit can refer to the description in the method for the embodiment of the present invention above, does not repeat them here.
It should be noted that, system embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple NE.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
Structure of the present invention, feature and action effect is described in detail above according to graphic shown embodiment; the foregoing is only preferred embodiment of the present invention; but the present invention does not limit practical range with shown in drawing; every change done according to conception of the present invention; or be revised as the Equivalent embodiments of equivalent variations; do not exceed yet specification with diagram contain spiritual time, all should in protection scope of the present invention.
Claims (10)
1. a cooling flow controlling method for dual-clutch transmission, is characterized in that, comprising:
The work of slipping of first clutch, the work of slipping of second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture is obtained every the sampling period of setting;
According to the work of slipping of the work of slipping of described first clutch, second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtain the expectation cooling flow flowing through the cooling oil of described double clutch;
Adjust flux valve, and make the difference of the flow of the cooling oil of described double clutch and described expectation cooling flow in the margin of error set; Wherein,
The expectation cooling flow that described acquisition flows through the cooling oil of described double clutch comprises:
According to the work of slipping of described first clutch and the work of slipping of second clutch, obtain the first cooling flow flowing through the cooling oil of described double clutch;
According to described gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtain the second cooling flow flowing through the cooling oil of described double clutch;
Determine quasiexpectation cooling flow, and make described quasiexpectation cooling flow be maximum value in described first cooling flow and described second cooling flow;
Limit value process is carried out to described quasiexpectation cooling flow, and determine the quasiexpectation cooling flow after limit value process for described in flow through the expectation cooling flow of the cooling oil of described double clutch.
2. cooling flow controlling method according to claim 1, is characterized in that, the second cooling flow that described acquisition flows through the cooling oil of described double clutch comprises:
According to the described speed of a motor vehicle and gas pedal aperture, obtain the target gear of gearbox;
Judge whether described gearbox-gear equals described target gear;
If not, then carry out gear-change operation, and determine that described second cooling flow is 0;
If so, then according to the time dependent relation curve of flow of all second cooling flow determined in the time period set before current sample time and setting, described second cooling flow is determined.
3. cooling flow controlling method according to claim 2, it is characterized in that, all second cooling flow determined in the described time period according to setting before current sample time and the time dependent relation curve of flow of setting, determine that described second cooling flow comprises:
According to the second cooling flow all in the time period set before current sample time, the first moment of the second cooling flow described relation curve finding the last sampling instant of corresponding current sample time determine;
Determined for the second moment, and equaled sampling period that described first moment adds described setting in described second moment;
Determine that described second cooling flow equals the flow in corresponding described second moment on described relation curve.
4. cooling flow controlling method according to claim 3, is characterized in that, described relation curve is trapezoidal wave.
5. the cooling flow controlling method according to any one of Claims 1-4, is characterized in that, describedly determines that quasiexpectation cooling flow specifically comprises:
The temperature of the temperature flowing through the cooling oil of double clutch and the cooling oil flowing through gearbox gear is obtained every the sampling period of described setting;
According to the temperature of the described temperature flowing through the cooling oil of double clutch and the cooling oil flowing through gearbox gear, obtain the 3rd cooling flow flowing through the cooling oil of described double clutch;
Determine that described quasiexpectation cooling flow is the maximum value in described first cooling flow, described second cooling flow and described 3rd cooling flow.
6. a cooling flow control system for dual-clutch transmission, is characterized in that, comprising:
Data acquisition unit, for obtaining the work of slipping of first clutch, the work of slipping of second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture every the sampling period of setting;
Expect cooling flow determining unit, for the work of slipping of the work of slipping according to described first clutch, second clutch, gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtain the expectation cooling flow flowing through the cooling oil of described double clutch;
Regulon, for adjust flux valve, and makes the difference of the flow of the cooling oil of described double clutch and described expectation cooling flow in the margin of error set; Wherein,
Described expectation cooling flow determining unit comprises:
First cooling flow determining unit, for according to the work of slipping of described first clutch and the work of slipping of second clutch, obtains the first cooling flow flowing through the cooling oil of described double clutch;
Second cooling flow determining unit, for according to described gearbox-gear, the speed of a motor vehicle and gas pedal aperture, obtains the second cooling flow flowing through the cooling oil of described double clutch;
Quasiexpectation cooling flow determining unit, for determining quasiexpectation cooling flow, and makes described quasiexpectation cooling flow be maximum value in described first cooling flow and the second cooling flow;
Limit value processing unit, for carrying out limit value process to described quasiexpectation cooling flow, and determine the quasiexpectation cooling flow after limit value process for described in flow through the expectation cooling flow of the cooling oil of described double clutch.
7. cooling flow control system according to claim 6, is characterized in that, described second cooling flow determining unit comprises:
Target gear determining unit, for according to the described speed of a motor vehicle and gas pedal aperture, obtains the target gear of gearbox;
Gear shift judging unit, for judging whether described gearbox-gear equals described target gear;
First determining unit, under described gearbox-gear and the unequal situation of described target gear, determines that described second cooling flow is 0;
Second determining unit, for when described gearbox-gear is equal with described target gear, according to the time dependent relation curve of flow of all second cooling flow determined in the time period set before current sample time and setting, determine described second cooling flow.
8. cooling flow control system according to claim 7, is characterized in that, described second determining unit comprises:
First moment determining unit, for according to the second cooling flow all in the time period set before current sample time, the first moment of the second cooling flow described relation curve finding the last sampling instant of corresponding current sample time determine;
Second moment determining unit, for determining for the second moment, and makes described second moment equal in sampling period that described first moment adds described setting;
3rd determining unit, for determining that described second cooling flow equals the flow in corresponding described second moment on described relation curve.
9. cooling flow control system according to claim 8, is characterized in that, described relation curve is trapezoidal wave.
10. the cooling flow control system according to any one of claim 6 to 9, is characterized in that,
Described data acquisition unit also for: obtain the temperature flowing through the cooling oil of double clutch and the temperature of cooling oil flowing through gearbox gear every the sampling period of described setting;
Described system also comprises the 3rd cooling flow determining unit, for flowing through the temperature of the cooling oil of double clutch described in basis and flowing through the temperature of cooling oil of gearbox gear, obtains the 3rd cooling flow flowing through the cooling oil of described double clutch;
Described quasiexpectation cooling flow determining unit specifically for: determine that described quasiexpectation cooling flow is the maximum value in described first cooling flow, the second cooling flow and the 3rd cooling flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410098269.8A CN103821919B (en) | 2014-03-17 | 2014-03-17 | The cooling flow controlling method of dual-clutch transmission and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410098269.8A CN103821919B (en) | 2014-03-17 | 2014-03-17 | The cooling flow controlling method of dual-clutch transmission and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103821919A CN103821919A (en) | 2014-05-28 |
| CN103821919B true CN103821919B (en) | 2016-04-27 |
Family
ID=50757133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410098269.8A Active CN103821919B (en) | 2014-03-17 | 2014-03-17 | The cooling flow controlling method of dual-clutch transmission and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103821919B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104698864B (en) * | 2015-02-26 | 2017-03-01 | 安徽江淮汽车集团股份有限公司 | The clutch model control method of wet-type dual-clutch transmission and system |
| CN109084012B (en) * | 2018-09-27 | 2020-10-09 | 安徽江淮汽车集团股份有限公司 | Method and module for determining cooling flow of wet-type double-clutch transmission |
| CN110206828B (en) * | 2019-05-23 | 2021-01-15 | 中国第一汽车股份有限公司 | Hybrid power car clutch flow coordination control method and system |
| CN110131397A (en) * | 2019-06-21 | 2019-08-16 | 重庆青山工业有限责任公司 | Wet-type dual-clutch lubrication flow control system |
| CN110513407B (en) * | 2019-08-15 | 2021-11-19 | 安徽江淮汽车集团股份有限公司 | Clutch temperature control method and device, electronic equipment and storage medium |
| CN112664584B (en) * | 2019-10-16 | 2022-09-30 | 上海汽车集团股份有限公司 | Lubrication control method and device of wet clutch and vehicle |
| CN110985566B (en) * | 2019-12-28 | 2021-10-29 | 中国第一汽车股份有限公司 | Vehicle starting control method and device, vehicle and storage medium |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002098171A (en) * | 2000-09-21 | 2002-04-05 | Jatco Transtechnology Ltd | Lubrication control device of starting clutch for automatic transmission |
| JP2004324819A (en) * | 2003-04-25 | 2004-11-18 | Jatco Ltd | Hydraulic control device of automatic transmission |
| EP1593881B1 (en) * | 2004-04-22 | 2008-08-27 | BorgWarner Inc. | Dual clutch transmission with cooling fluid feeding arrangement and method of feeding cooling fluid for such a transmission |
| DE102005013137A1 (en) * | 2005-03-22 | 2006-09-28 | Zf Friedrichshafen Ag | Method and device for controlling an oil supply for an automatic transmission and a starting element |
| JP4945139B2 (en) * | 2006-01-27 | 2012-06-06 | 日立オートモティブシステムズ株式会社 | Automotive control device |
| US8402993B2 (en) * | 2010-05-10 | 2013-03-26 | GM Global Technology Operations LLC | Hydraulic fluid cooling system for a dual clutch automatic transmission |
-
2014
- 2014-03-17 CN CN201410098269.8A patent/CN103821919B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103821919A (en) | 2014-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103821919B (en) | The cooling flow controlling method of dual-clutch transmission and system | |
| CN102287530B (en) | The method of control upshift in vehicle transmission | |
| US9618112B2 (en) | Apparatus for detecting abnormal hydraulic pressure of automatic transmission | |
| CN102537314B (en) | Main oil pressure control method for automatic transmission | |
| CN106560362A (en) | Control Method Of Dual Clutch Transmission For Hybrid Electric Vehicle And Control System For The Same | |
| CA2898308C (en) | System and method for energy rate balancing in hybrid automatic transmissions | |
| CN102444710B (en) | Transmission oil temperature estimation systems and methods | |
| CN104132082A (en) | Method of controlling transmission friction element by using adaptive transfer function | |
| CN1831384A (en) | Method and apparatus for adaptive control of power-on skip through neutral downshifts | |
| CN110159750B (en) | Power downshift rotating speed adjusting and controlling method for double-clutch automatic transmission | |
| US20150019073A1 (en) | Oil pump system of hybrid vehicle and method for controlling the same | |
| EP2218945A2 (en) | Identification method of the optimal gear for a transmission of a vehicle | |
| CN106402376B (en) | The working connection compress control method of automatic gear-box | |
| US20160003346A1 (en) | Drive control method and system for electric oil pump | |
| CN103410959A (en) | Method for controlling automatic double-clutch gearbox from gliding at neutral gear to drive on gears | |
| CN101879897B (en) | Temperature dependent minimum transmission input speed | |
| US8788160B2 (en) | System for allocating transmission clutch wear | |
| CN109312855B (en) | Method for controlling a dual clutch transmission | |
| US20170074332A1 (en) | Method for Controlling a Hydraulic-Medium Supply System of an Automatic Transmission | |
| US10393256B2 (en) | Control device for vehicle drive apparatus | |
| US11261924B2 (en) | Method for operating a clutch of a drivetrain for a motor vehicle and motor vehicle having a drivetrain | |
| WO2014198280A1 (en) | Vehicle transmission and a method for operating a vehicle transmission | |
| JP2014173617A (en) | Clutch control device | |
| US8452499B2 (en) | System for allocating transmission clutch wear | |
| Panzani et al. | Transmission control for power-shift agricultural tractors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hefei City, Anhui Province, 230022 East Road No. 176 Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: Hefei City, Anhui Province, 230022 East Road No. 176 Patentee before: Anhui Jianghuai Automobile Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |
Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230022 No. 176 Dongliu Road, Hefei City, Anhui Province Patentee before: Anhui Jianghuai Automobile Group Limited by Share Ltd |
|
| CP02 | Change in the address of a patent holder |