CN202271994U - Fuel-saving control device of automatic-gearshift vehicle during sliding process thereof - Google Patents
Fuel-saving control device of automatic-gearshift vehicle during sliding process thereof Download PDFInfo
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- CN202271994U CN202271994U CN2011203230613U CN201120323061U CN202271994U CN 202271994 U CN202271994 U CN 202271994U CN 2011203230613 U CN2011203230613 U CN 2011203230613U CN 201120323061 U CN201120323061 U CN 201120323061U CN 202271994 U CN202271994 U CN 202271994U
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Abstract
The utility model provides the fuel-saving control device of an automatic-gearshift vehicle during the sliding process thereof, which can save fuel for conventional automatic-gearshift vehicles during the sliding process thereof. The fuel-saving control device comprises an engine ECU and a speed changer TCU. The engine ECU and the speed changer TCU are in communication connection with each other through a CAN bus. The speed changer TCU can control a clutch control solenoid valve in a gearbox so as to control the state of a hydrodynamic torque converter. The engine ECU emits signals so as to control the execution member of an electronic injection system. The speed changer TCU performs a comparison treatment on fuel cut-off signals sent by the engine ECU and then returns the signals to the engine ECU. The engine ECU performs a treatment on feedback state signals sent by the speed changer TCU and then controls the execution member of the electronic injection system to be matched with the working state of the speed changer. The speed changer TCU controls the clutch state of the hydrodynamic torque converter. Due to the adoption of the fuel-saving control device, the gear-shifting quality is ensured, while the fuel consumption is maximally saved at the same time.
Description
Technical field
The utility model belongs to automobile technical field, relates to a kind of fuel-efficient control setup of automatic catch vehicle coast period.
Background technology
Develop rapidly along with automotive technology; No matter in the world or in China; Automatic transmission with hydraulic torque converter being used on the automobile more and more widely; All can be for most automatic catch vehicle than a same excessive fuel consumption of manually keeping off a car, along with skyrocketing of oil price, the fuel-saving control strategy of automatic catch vehicle is given the attention of height to a certain extent.
And in the present existing engine control strategy; No matter manually keep off a car or the automatic catch vehicle, the control policy of widespread usage DECEL ENLEAN, the oil spout of promptly receiving the stage control unit of engine control combustion cutoff of cunning row at vehicle; When engine speed is lower than the safety value of some settings; Recover fuel feeding again, and before not having bend the throttle, vehicle is in idling oil spout state all the time.As this operation is carried out in time circulation to satisfy the DECEL ENLEAN condition once more, thereby reaches the purpose of fuel-economizing.But for some Automatic Transmission vehicle,, promptly can not use the sliding wear control of TCC, use the strategy that continues the locking turbine transformer can produce shifting shock when lowering category sliding again at coast period because this body structure of change speed gear box is different.In sliding the process that lowers category, the gear shift energy that high more engine speed brings the shifting of transmission power-transfer clutch is just big more, and the shift quality that thereupon brings also maybe be poor more.In case lockup clutch of converter still is in lockup state falling the retaining stage; So in falling the retaining process; The major part vibrations that automatic transmission with hydraulic torque converter inside produces when switching shift clutch all can be directly delivered to the chaufeur place through hardwired driving system, make chaufeur significantly experience the impact sense of gearshift.So; If fall when retaining sliding; Open the lock-up clutch of turbine transformer, the vibrations that the pump impeller of turbine transformer and the change-speed box fluid between the turbine can the actv. absorption portion make chaufeur experience smooth-going lowering category; But the drawback of meanwhile bringing then is to have lost the ability of utilizing input shaft rotating speed towing astern engine speed, and engine speed is descended fast.When engine speed was lower than the rotating speed of DECEL ENLEAN setting, driving engine recovered fuel feeding.And in a single day turbine transformer is opened, and under the state that negative torque slides, is difficult to pump impeller that speed discrepancy is bigger and turbine locking once more, thus the effect of forfeiture fuel-economizing.Though driving engine still has an opportunity to get into the DECEL ENLEAN stage once more after recovering fuel feeding, is very easy to cause that engine speed ascending velocity under the situation that TCC is opened is too fast, causes continued jitters within the specific limits.If the locking turbine transformer can lose the gearshift quality again in falling the retaining process all the time.
People are to the automobile problem of more simple and effective fuel-economizing how; Worked out a kind of automatic guidance petrol economizer; As disclosing a kind of vehicle electronics petrol economizer (its publication number CN200985832Y) at Chinese patent, its structure comprise near the belt pulley that is installed in driving engine leading portion bent axle or its drive near switch, be installed in the microcomputer controller in the operator's compartment; Electromagnetic switch on the gas feeder is installed in the synergistic device that slides on the jackshaft.This patent provides a kind of through the crankshaft rotating speed signal is transferred to microcomputer controller, utilizes microcomputer controller to control the break-make of electromagnetic switch, thereby control supplies the situation of oil-break.
Though thereby above-mentioned patent can utilize coast to reach the fuel-economizing purpose through oil-break by actv., because the speed of a motor vehicle, road conditions, multiple reason such as load; Microcomputer controller needs manual work to set to the control of engine speed, one of which, and this is provided with convenient inadequately; Road conditions, the speed of a motor vehicle is becoming, and chaufeur also will often be regulated microcomputer controller according to road conditions; Its two, if chaufeur does not mix up setting, behind the idling fuel cut-off; Change speed gear box falls retaining at this moment but rotating speed is too high, can produce the impact sense of gearshift, the traveling comfort that influence is driven and influence is taken.
Summary of the invention
There are the problems referred to above in the utility model to existing technology; A kind of fuel-efficient control setup of automatic catch vehicle coast period has been proposed; When the fuel-efficient control setup of this a kind of automatic catch vehicle coast period can guarantee the gearshift quality, practiced thrift fuel oil consumption to greatest extent.
The utility model is realized through following technical proposal: a kind of fuel-efficient control setup of automatic catch vehicle coast period; Automatic catch automobile comprises driving engine and change-speed box; Between driving engine and change-speed box, connect through turbine transformer; This fuel-efficient control setup comprises the Engine ECU that is arranged on the driving engine and the change-speed box TCU on the change-speed box; Above-mentioned change-speed box TCU carries out communication with Engine ECU through the CAN bus and is connected; Change-speed box TCU can control the state that clutch for clutch control electromagnetic valve in the change speed gear box is controlled turbine transformer; Send the power element that signal is controlled electric injection system through Engine ECU, described change-speed box TCU can compare the oil-break signal that Engine ECU transports and handle and return signal to Engine ECU, and described Engine ECU can be handled and control the electric injection system power element to the status signal of change-speed box TCU feedback and cooperate transmission state work.
When the car retardation oil-break; Described change-speed box TCU receives oil-break signal that Engine ECU sends and it is carried out analyzing and processing; The control change-speed box is made corresponding execution action; Give Engine ECU with signal feedback then, feedback signal sends to Engine ECU through the CAN bus and carries out corresponding interoperation.If change-speed box just in time was in to slide and lowered category this moment; Turbine transformer can receive the clutch opening signal from change-speed box TCU; Change-speed box TCU is transported to Engine ECU with needed engine rotational speed signal through the CAN bus afterwards, and Engine ECU is sent signal control oil spout power element and carried out the rotating speed that corresponding fuel charge is kept driving engine; When change-speed box is accomplished gearshift, and engine speed is when reaching change-speed box TCU request rotating speed, change-speed box TCU control control TCC locking.This moment, engine speed recovered the rotating speed of fuel feeding again away from driving engine according to the influence rising of transmitting ratio; And because the towing astern of the speed of a motor vehicle; So-called towing astern is meant that vehicle receiving cunning a kind of mode of operation when capable, and vehicle is after receiving oil, because driving engine does not do work; The rotating speed of driving engine is to lean on the speed of a motor vehicle to drive transmission shaft, and drive change-speed box and driving engine move; Owing to the locking of turbine transformer, engine speed can not descend rapidly in addition, has saved oil consumption when rotating speed slowly descends.
In the fuel-efficient control setup of above-mentioned automatic catch vehicle coast period, the control signal that described change-speed box TCU flows to Engine ECU is the request rotating speed, and promptly engine speed is kept rotating speed of target when transmission downshifts.
When change-speed box is in to slide fall when beginning the retaining stage; Request signal is flowed to Engine ECU; Control EFI power element was kept the engine speed that change-speed box TCU asks after Engine ECU received signal; Can not cause engine speed to descend fast because of opening of turbine transformer, described EFI power element be the automobile common structure.
In the fuel-efficient control setup of above-mentioned automatic catch vehicle coast period; Described turbine transformer comprise with driving engine mouth bonded assembly pump impeller and with gear box input bonded assembly turbine; Described turbine transformer is connected with speed change through change-speed box TCU wire harness, and above-mentioned change-speed box TCU wire harness is change-speed box and turbine transformer bonded assembly element.Change-speed box TCU is through the clutch for clutch control electromagnetic valve work in the electric signal control change-speed box; Thereby the oil pressure in the change turbine transformer; Power-transfer clutch in the control turbine transformer is opened and locking or sliding wear state; So-called sliding wear state is meant the clutch fading of turbine transformer the inside, the state of phase mutual friction.Change-speed box TCU carries out communication through CAN bus and Engine ECU.
Vehicle is in to be received cunningly when capable, and when change-speed box TCU received the DECEL ENLEAN signal that Engine ECU sends, change-speed box TCU sent electric signal control clutch for clutch control electromagnetic valve and controls converter lockup; Perhaps less rotating speed carries out sliding wear, and purpose is to come the rotating speed of towing astern driving engine through the speed of a motor vehicle, and what make it can not to descend too fastly is lower than that Engine ECU control recovers the rotating speed of fuel feeding again and the end that causes DECEL ENLEAN.In order to guarantee to shift gears preferably quality, when the power-transfer clutch when gearshift on the change-speed box TCU control turbine transformer was opened, pump impeller separated with turbine simultaneously; When retaining falls in the change-speed box completion; For fear of the rapid situation about descending of engine speed when turbine transformer is opened; Change-speed box TCU is when the control turbine transformer is opened; To corresponding engine speed of Engine ECU request, driving engine is maintained a little less than the gear box input rotating speed that lowers category after accomplishing.In the fuel-efficient control setup of above-mentioned automatic catch vehicle coast period, described change-speed box TCU can control TCC and open in falling the retaining process, and every grade is fallen control TCC locking when keeping off end.
Slide and fall when retaining change-speed box TCU the engine speed request signal is transported in the Engine ECU, Engine ECU will be controlled the EFI power element and carry out a spot of oil spout and satisfy the rotating speed request that comes from change-speed box TCU then; After change-speed box is accomplished gearshift, based on the specific rotation speeds that driving engine is kept turbine transformer is carried out locking or sliding wear control, send signal simultaneously and give Engine ECU, at this moment Engine ECU can get into oil-break control again.If current rotating speed does not satisfy the oil-break requirement of Engine ECU, Engine ECU is controlled EFI power element recovery fuel feeding again so.
In the fuel-efficient control setup of above-mentioned automatic catch vehicle coast period, described turbine transformer power-transfer clutch when falling retaining is opened the time of locking and is controlled by change-speed box TCU.
Change-speed box TCU controls turbine transformer and opens when lowering category; Concurrent feed signals is to the corresponding engine speed of Engine ECU request; Engine ECU control EFI power element is kept specific rotating speed, and after shift of transmission finished, change-speed box TCU carried out control clutch based on current engine speed again to turbine transformer and is in locking or sliding wear state; And feeding back signal to Engine ECU, this moment, gearshift finished; Engine ECU gets into the oil-break control stage again based on this signal and present engine rotating speed.
In the fuel-efficient control setup of above-mentioned automatic catch vehicle coast period, described Engine ECU can be recovered oil spout by control EFI power element when detecting current rotating speed and be lower than Engine ECU and recover the fuel feeding rotating speed.
After Engine ECU receives the TCC opening signal and request engine rotational speed signal that change-speed box TCU sends, can send control signal control EFI power element, carry out a small amount of oil spout and be maintained to corresponding rotating speeds.
In the fuel-efficient control setup of above-mentioned automatic catch vehicle coast period, described Engine ECU, change-speed box TCU are through the total wire joint of CAN.
Compared with prior art, the utlity model has following advantage:
1, carries out certain rotating speed that driving engine is kept in a small amount of oil spout owing to be provided with request engine speed link through Engine ECU control EFI control element; Reduced and fallen retaining impact sense; Improve the gearshift quality, prolonged the time of sliding the stage oil-break that lowers category on the certain hour simultaneously.The time of oil-break has increased, and oil consumption has obtained reduction naturally.。
2, because each big main hardware is that the automatic catch vehicle has basically, need not to increase multisensor and other hardware, only need just on software logic, develop and to reach the control effect, have low cost and performance and improve tangible advantage.
3, owing to the control of Engine ECU, actv. is being kept the rotating speed request that engine speed is followed change-speed box TCU, has made full use of the coast of vehicle, has practiced thrift the consumption of fuel to greatest extent.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the utility model control flow chart.
Fig. 3 is the turbine transformer constructional drawing in the utility model.
Among the figure, 1 engine load sensor; 2 shaft rotation speed transducers; 3 Engine ECU; 4 change-speed box ECU; 5 clutch for clutch control electromagnetic valves; The 6CAN bus.
The specific embodiment
Below be the specific embodiment of the utility model, and combine accompanying drawing that the technical scheme of the utility model is done further to describe, but the oil-efficient control setup of this automatic catch vehicle coast period is not limited to these embodiment.
As shown in Figure 1; A kind of fuel-efficient control setup of automatic catch vehicle coast period; Automatic catch automobile comprises driving engine and change-speed box; Between driving engine and change-speed box, connect through turbine transformer, this fuel-efficient control setup comprises EFI power element and the Engine ECU 3 that is arranged on the driving engine, and is arranged at the change-speed box TCU 4 on the change-speed box; Described Engine ECU 3, change-speed box TCU4 connect through CAN bus 6, between signal come communication through CAN bus 6; Change-speed box TCU 4 is provided with the clutch for clutch control electromagnetic valve of control turbine transformer clutch state; Described change-speed box TCU 4 can compare the oil-break signal that Engine ECU 3 transports and handle and return signal to Engine ECU 3, and Engine ECU 3 can be handled and control the electric injection system power element to the status signal of change-speed box TCU 3 feedbacks and cooperate transmission state work.
As shown in Figure 3, turbine transformer comprise with the pump impeller of driving engine mouth mechanical connection and with gear box input terminal tool bonded assembly turbine; Thereby change-speed box TCU3 can carry electric signal to open for clutch for clutch control electromagnetic valve 5 control TCCs in falling the retaining process; When falling the retaining end, thereby change-speed box TCU 4 carries electric signal to be in locking or sliding wear state for clutch for clutch control electromagnetic valve 5 control TCCs; Change-speed box TCU 4 gives Engine ECU 3 at the rotating speed of transmission request simultaneously that lowers category.Engine ECU 3 can be recovered oil spout by control EFI power element when detecting current rotating speed and be lower than the rotating speed of setting recovery fuel feeding.
As shown in Figure 2, when engine load sensor 1 detected Das Gaspedal and is zero, to Engine ECU 3, Engine ECU 3 was handled signal and is transported to the EFI power element and carries out oil-break control then with signal conveys, and the EFI power element is carried out this control; The signal that transports of 3 pairs of tachogens 2 of Engine ECU and EFI power element carries out analyzing and processing, transmits signal to change-speed box TCU 4 through the CAN7 bus; When needs lowered category, change-speed box TCU 4 sent and falls the retaining signal to Engine ECU 3, and while change-speed box TCU 4 transmits signal to clutch for clutch control electromagnetic valve 5 control TCCs and opens; Can will ask after clutch for clutch control electromagnetic valve 5 is opened the signal conveys of rotating speed give Engine ECU 3, be transported to the EFI power element after Engine ECU 3 is handled signal and control it and carry out corresponding oil spout and keep rotating speed; When speed discrepancy during at setting range; Change-speed box TCU 4 accomplishes and falls retaining; And transmit signal to Engine ECU 3; Lowering category in the process of DECEL ENLEAN transmit signal to clutch for clutch control electromagnetic valve 5 control TCCs simultaneously and be in locking or sliding wear state, so long as can so be controlled.Through the tach signal that tachogen 2 detects, will control the oil spout power element if cross low Engine ECU 3 so, recover fuel feeding.
Specific embodiment described herein only is that the utility model spirit is made casehistory.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from the spirit of the utility model or surmount the defined scope of appended claims.
Although this paper has used morely: terms such as engine load sensor 1, shaft rotation speed transducer 2, Engine ECU 3, change-speed box ECU 4, clutch for clutch control electromagnetic valve 5, CAN bus 6, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain the essence of the utility model more easily; It all is contrary with the utility model spirit being construed to any additional restriction to them.
Claims (7)
1. the fuel-efficient control setup of an automatic catch vehicle coast period; Automatic catch automobile comprises driving engine and change-speed box; Between driving engine and change-speed box, connect through turbine transformer; This fuel-efficient control setup comprises the Engine ECU (3) that is arranged on the driving engine and the change-speed box TCU (4) on the change-speed box; Above-mentioned change-speed box TCU (4) carries out communication with Engine ECU (3) through CAN bus (6) and is connected; It is characterized in that change-speed box TCU (4) can control the state that clutch for clutch control electromagnetic valve (5) in the change speed gear box is controlled turbine transformer, sends the power element that signal is controlled electric injection system through Engine ECU (3); Described change-speed box TCU (4) can compare the oil-break signal that Engine ECU (3) transport and handle and return signal to Engine ECU (3), and described Engine ECU (3) can be handled and control the electric injection system power element to the status signal of change-speed box TCU (4) feedback and cooperate transmission state work.
2. the fuel-efficient control setup of automatic catch vehicle coast period according to claim 1; It is characterized in that; The control signal that described change-speed box TCU (4) flows to Engine ECU (3) is the request rotating speed, and promptly engine speed is kept rotating speed of target when transmission downshifts.
3. the fuel-efficient control setup of automatic catch vehicle coast period according to claim 1; It is characterized in that; Described turbine transformer comprise with driving engine mouth bonded assembly pump impeller and with gear box input bonded assembly turbine; Described turbine transformer is connected with speed change through change-speed box TCU (4) wire harness, and above-mentioned change-speed box TCU (4) wire harness is change-speed box and turbine transformer bonded assembly element.
4. according to the fuel-efficient control setup of the automatic catch vehicle coast period described in the claim 2; It is characterized in that; Described change-speed box TCU (4) can control TCC and open in falling the retaining process, every grade is fallen control TCC locking when keeping off end.
5. according to the fuel-efficient control setup of claim 1 or 2 or 3 or 4 described automatic catch vehicle coast periods, it is characterized in that described turbine transformer power-transfer clutch when falling retaining is opened the time of locking and controlled by change-speed box TCU (4).
6. according to the fuel-efficient control setup of claim 1 or 2 or 3 or 4 described automatic catch vehicle coast periods; It is characterized in that described Engine ECU (3) can be recovered oil spout by control EFI power element when detecting current rotating speed and be lower than Engine ECU (3) and recover the fuel feeding rotating speed.
7. the fuel-efficient control setup of automatic catch vehicle coast period according to claim 6 is characterized in that, described Engine ECU (3), change-speed box TCU (4) connect through CAN bus (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203230613U CN202271994U (en) | 2011-08-31 | 2011-08-31 | Fuel-saving control device of automatic-gearshift vehicle during sliding process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203230613U CN202271994U (en) | 2011-08-31 | 2011-08-31 | Fuel-saving control device of automatic-gearshift vehicle during sliding process thereof |
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| Publication Number | Publication Date |
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| CN202271994U true CN202271994U (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203230613U Expired - Fee Related CN202271994U (en) | 2011-08-31 | 2011-08-31 | Fuel-saving control device of automatic-gearshift vehicle during sliding process thereof |
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| CN (1) | CN202271994U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533740A (en) * | 2018-04-25 | 2018-09-14 | 浙江吉利汽车研究院有限公司 | A kind of control device and method improving the impact of vehicle sliding downshift |
| CN112555404A (en) * | 2021-03-01 | 2021-03-26 | 盛瑞传动股份有限公司 | Adaptive control method and device for automatic transmission and automatic transmission controller |
| CN113071473A (en) * | 2021-03-22 | 2021-07-06 | 江铃汽车股份有限公司 | Coordinated control method for EPB mode and AMT gearbox of truck engine |
-
2011
- 2011-08-31 CN CN2011203230613U patent/CN202271994U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533740A (en) * | 2018-04-25 | 2018-09-14 | 浙江吉利汽车研究院有限公司 | A kind of control device and method improving the impact of vehicle sliding downshift |
| CN108533740B (en) * | 2018-04-25 | 2020-03-27 | 浙江吉利汽车研究院有限公司 | Control device and method for improving vehicle sliding downshift impact |
| CN112555404A (en) * | 2021-03-01 | 2021-03-26 | 盛瑞传动股份有限公司 | Adaptive control method and device for automatic transmission and automatic transmission controller |
| CN113071473A (en) * | 2021-03-22 | 2021-07-06 | 江铃汽车股份有限公司 | Coordinated control method for EPB mode and AMT gearbox of truck engine |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20130831 |