CN112026778A - Method and device for improving driving smoothness of automatic transmission vehicle - Google Patents
Method and device for improving driving smoothness of automatic transmission vehicle Download PDFInfo
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- CN112026778A CN112026778A CN202010951671.1A CN202010951671A CN112026778A CN 112026778 A CN112026778 A CN 112026778A CN 202010951671 A CN202010951671 A CN 202010951671A CN 112026778 A CN112026778 A CN 112026778A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012544 monitoring process Methods 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 230000004913 activation Effects 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 13
- 230000001133 acceleration Effects 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 2
- 230000001143 conditioned effect Effects 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 3
- 230000007704 transition Effects 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000036461 convulsion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- 239000000725 suspension Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/20—Reducing vibrations in the driveline
- B60W2030/206—Reducing vibrations in the driveline related or induced by the engine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1005—Transmission ratio engaged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1015—Input shaft speed, e.g. turbine speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention provides a method and a device for improving driving smoothness of an automatic transmission vehicle, which comprises the steps of monitoring a hydraulic torque state of a gearbox, an engine rotating speed, a rotating speed of an input shaft of the gearbox and a torque requested by a driver, and synchronously sending monitoring data to a driving computer in real time; then, the traveling computer judges whether to activate the engine torque request according to the monitoring data; when the engine torque request is in an activated state, the driving computer sets the engine output torque to be equal to 0, and then the engine output torque smoothly transits from 0 to the torque requested by the driver according to a set speed. When a hydraulic torque converter of a gearbox is opened, a vehicle is in a drag-down working condition, if a driver steps on an accelerator to accelerate, when the rotating speed of an engine is changed from being lower than the rotating speed of an input shaft of the gearbox to being higher than the rotating speed of the input shaft of the gearbox, torque processing is carried out, the output torque of the engine is set to be equal to 0, and then the output torque of the engine is smoothly transited from 0 to the torque requested by the driver according to a set speed, so that the driving is smooth and the drag is.
Description
Technical Field
The invention relates to the technical field of vehicle driving smoothness optimization, in particular to a method and a device for improving driving smoothness of an automatic-gear vehicle.
Background
For a vehicle with an automatic transmission, when the rotating speed of an engine passes through the rotating speed of an input shaft of the transmission (namely when a vehicle sliding hydraulic torque converter is opened, the rotating speed of the input shaft of the transmission is dragged by the vehicle to be higher than the rotating speed of the engine, and the rotating speed of the engine is increased to be higher than the rotating speed of the input shaft of the transmission when an accelerator is stepped on for acceleration), the vehicle has impact, obvious jerk and poor driving feeling.
Therefore, there is a need to develop a method capable of solving the above problems.
Disclosure of Invention
In view of the above, the present invention provides a method and an apparatus for improving driving smoothness of an automatic transmission vehicle, where the vehicle is in a drag-down condition when a hydraulic torque converter of a transmission is turned on, if a driver steps on an accelerator to accelerate, when an engine speed is changed from a speed lower than an input shaft speed of the transmission to a speed higher than the input shaft speed of the transmission, a torque is processed, a driving computer sets an engine output torque equal to 0, and then the engine output torque is changed from 0 to request a torque smooth transition from a set rate to the driver, so that the driving is smooth and the suspension is avoided.
In order to solve the technical problems, the invention adopts the following technical scheme:
the method for improving the driving smoothness of the automatic-transmission vehicle according to the first aspect of the invention comprises the following steps:
monitoring the hydraulic torque state of the gearbox, the rotating speed of an engine, the rotating speed of an input shaft of the gearbox and the torque requested by a driver, and synchronously sending monitoring data to a traveling computer in real time;
the driving computer judges whether to activate the engine torque request according to the monitoring data;
when the engine torque request is in an activated state, the driving computer sets the engine output torque to be equal to 0, and then the engine output torque smoothly transits from 0 to the torque requested by the driver according to a set speed.
Further, when the engine torque request is in the inactive state, the engine output torque is consistent with the driver requested torque.
Further, the condition that the traveling computer judges that the engine torque request is in the activated state according to the monitoring data is as follows: the hydraulic torque state of the gearbox is an opening state, the rotating speed of an engine is lower than the rotating speed of an input shaft of the gearbox, and meanwhile, the torque requested by a driver is larger than zero, so that the driver steps on an accelerator to accelerate.
Further, the transmission fluid torque state comprises an open state, a locked state, a slipping state and an uncombined state.
Further, in order to avoid the problem that the engine torque request is activated when the water temperature of the engine is lower than a set value, so that the combustion of the engine is not good and the smoothness of a vehicle is not facilitated, the method also comprises the steps of monitoring the water temperature of the engine, synchronously sending monitoring data to a running computer in real time, allowing the engine torque request to be activated when the monitoring data of the water temperature of the engine is higher than the set value, and not allowing the engine torque request to be activated when the monitoring data of the water temperature of the engine is lower than the set value.
Further, the set value of the engine water temperature is 60 to 70 ℃.
And further monitoring gear information of the gearbox, wherein the gear information of the gearbox comprises a forward gear, a neutral gear and a reverse gear, monitoring data are synchronously sent to a driving computer in real time, the engine torque request is allowed to be activated when the gear information of the gearbox is the forward gear, and the engine torque request is not allowed to be activated when the gear information of the gearbox is the neutral gear or the reverse gear.
The method further comprises the steps of monitoring whether the communication between the engine control unit and the gearbox control unit is normal or not, synchronously sending monitoring data to a traveling computer in real time, allowing the engine torque request to be activated when the communication between the engine control unit and the gearbox control unit is in a normal state, and not allowing the engine torque request to be activated when the communication between the engine control unit and the gearbox control unit is in a fault state.
An apparatus for improving driving smoothness of an automatic transmission vehicle according to an embodiment of a second aspect of the present invention includes:
the monitoring module is used for monitoring whether the transmission liquid torque state, the engine rotating speed, the rotating speed of an input shaft of the transmission, the torque requested by a driver, the engine water temperature, the transmission gear information and the communication between the engine control unit and the transmission control unit of the vehicle are normal or not in real time;
the engine torque request activation module is used for judging whether to activate the engine torque request, and when the liquid torque state of the gearbox is an open state, the rotating speed of the engine is lower than the rotating speed of an input shaft of the gearbox, and simultaneously the torque requested by the driver is larger than zero, which indicates that the driver steps on an accelerator for acceleration, the engine torque request activation module is in an activation state;
the driving computer is used for receiving the monitoring data of the monitoring module in real time and judging whether the vehicle activates the engine torque request or not according to the monitoring data; when the engine torque request activation module is in an activation state, the driving computer sets the output torque of the engine to be equal to 0, and then the output torque of the engine is smoothly transited from 0 to the torque requested by a driver according to a set speed; when the engine torque request enable module is in the inactive state, the engine output torque is consistent with the driver requested torque.
The technical scheme of the invention has the following beneficial effects:
the invention aims at the technical problems that in the prior art, when the rotating speed of an engine passes through the rotating speed of an input shaft of a gearbox (namely when a vehicle slides and a hydraulic torque converter is opened, the rotating speed of an input shaft of the gearbox is dragged by the vehicle to be higher than the rotating speed of the engine, and the rotating speed of the engine is increased to be higher than the rotating speed of the input shaft of the gearbox when an accelerator is stepped on for acceleration), the vehicle has impact, obvious jerk and poor driving feeling. Firstly, monitoring a hydraulic torque state of a gearbox, an engine rotating speed, a rotating speed of an input shaft of the gearbox and a torque requested by a driver, and synchronously sending monitoring data to a driving computer in real time; then, the traveling computer judges whether to activate the engine torque request according to the monitoring data; when the engine torque request is in an activated state, the driving computer sets the engine output torque to be equal to 0, and then the engine output torque smoothly transits from 0 to the torque requested by the driver according to a set speed.
According to the invention, when a hydraulic torque converter of a gearbox is opened, a vehicle is in a drag-down working condition, if a driver steps on an accelerator to accelerate, torque processing is carried out when the rotating speed of an engine is changed from being lower than the rotating speed of an input shaft of the gearbox to being higher than the rotating speed of the input shaft of the gearbox, a driving computer sets the output torque of the engine to be equal to 0, and then the output torque of the engine is changed from 0 to request torque to be smoothly transited to the driver according to the set speed, so that smooth driving is realized.
Drawings
FIG. 1 is a flow chart of a method for improving ride comfort of an automatic transmission vehicle according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.
The following describes in detail a method for improving driving smoothness of an automatic transmission vehicle according to an embodiment of the present invention with reference to fig. 1, including the following steps:
monitoring a hydraulic torque state convstate of the gearbox, an engine rotating speed Engspd, a rotating speed Tra-instd of an input shaft of the gearbox and a torque Engdtrq requested by a driver, and synchronously sending monitoring data to an ECU (electronic control Unit) of a traveling crane in real time;
the driving computer ECU judges whether to activate the engine torque request B _ DrtrqREQ or not according to the monitoring data;
when the engine torque request B _ DrtrqREQ is in an active state, the vehicle computer ECU sets the engine output torque Engtrq equal to 0, and then the engine output torque Engtrq smoothly transitions from 0 to the driver request torque Engdrtrq at a set rate.
In this embodiment, the specific value of the set rate of smooth transition of the engine output torque Engtrq is set according to the parameters of the engine, the gear information of the transmission and the test data.
Additionally, when the engine torque request B _ DrtrqREQ is in an inactive state, the engine output torque Engtrq is consistent with the driver requested torque Engdtrq.
In addition, the condition that the vehicle computer ECU judges that the engine torque request B _ DrtrqREQ is in the activated state according to the monitoring data is as follows: the torque state convstate of the transmission is an open state, the engine speed Engspd is lower than the input shaft speed Tra-instd of the transmission, and the driver request torque Engdtrq is larger than zero to indicate that the driver steps on the accelerator for acceleration.
Additionally, the transmission torque state convstate includes an open state, a locked state, a slip state, and an unengaged state. The engine torque request B _ DrtrqREQ is only allowed to be activated when the transmission torque state convstate is open.
In addition, in order to avoid the problem that the engine torque request B _ DrtrqREQ is activated when the water temperature of the engine is lower than a set value, so that the combustion of the engine is not good and the smoothness of a vehicle is not facilitated, the method also comprises the steps of monitoring the water temperature of the engine, synchronously sending monitoring data to the driving computer ECU in real time, allowing the engine torque request B _ DrtrqREQ to be activated when the monitoring data of the water temperature of the engine are higher than the set value, and not allowing the engine torque request B _ DrtrqREQ to be activated when the monitoring data of the water temperature of the engine are.
The set value of the engine water temperature is 60 ℃, and the set value of the engine water temperature is set according to different regions, and obviously, the set value can be set higher, such as 65 ℃, 70 ℃ and the like, in order to protect the normal use of the engine.
In addition, in order to avoid the accidental activation of the engine torque request B _ DrtrqREQ in the non-forward process, the method also comprises the steps of monitoring the gear information of the gearbox, wherein the gear information of the gearbox comprises a forward gear, a neutral gear and a reverse gear, sending monitoring data to the driving computer ECU in real time and synchronously, allowing the engine torque request B _ DrtrqREQ to be activated when the gear information of the gearbox is the forward gear, and not allowing the engine torque request B _ DrtrqREQ to be activated when the gear information of the gearbox is the neutral gear or the reverse gear.
In addition, in order to avoid the accidental activation of the engine torque request B _ DrtrqREQ when the communication between the engine control unit and the gearbox control unit is in a failure state, the method also comprises the steps of monitoring whether the communication between the engine control unit and the gearbox control unit is normal or not, synchronously sending monitoring data to the driving computer ECU in real time, allowing the engine torque request B _ DrtrqREQ to be activated when the communication between the engine control unit and the gearbox control unit is in the normal state, and not allowing the engine torque request B _ DrtrqREQ to be activated when the communication between the engine control unit and the gearbox control unit is in the failure state.
According to the invention, when a hydraulic torque converter of a gearbox is opened, a vehicle is in a drag-down working condition, if a driver steps on an accelerator to accelerate, torque processing is carried out when the rotating speed of an engine is changed from being lower than the rotating speed of an input shaft of the gearbox to being higher than the rotating speed of the input shaft of the gearbox, a driving computer sets the output torque of the engine to be equal to 0, and then the output torque of the engine is changed from 0 to request torque to be smoothly transited to the driver according to the set speed, so that smooth driving is realized.
In addition, the present invention also provides a device for improving driving smoothness of an automatic transmission vehicle, comprising:
the monitoring module is used for monitoring whether the transmission liquid torque state, the engine rotating speed, the rotating speed of an input shaft of the transmission, the torque requested by a driver, the engine water temperature, the transmission gear information and the communication between the engine control unit and the transmission control unit of the vehicle are normal or not in real time;
the engine torque request activation module is used for judging whether to activate the engine torque request, and when the liquid torque state of the gearbox is an open state, the rotating speed of the engine is lower than the rotating speed of an input shaft of the gearbox, and simultaneously the torque requested by the driver is larger than zero, which indicates that the driver steps on an accelerator for acceleration, the engine torque request activation module is in an activation state;
the driving computer is used for receiving the monitoring data of the monitoring module in real time and judging whether the vehicle activates the engine torque request or not according to the monitoring data; when the engine torque request activation module is in an activation state, the driving computer sets the output torque of the engine to be equal to 0, and then the output torque of the engine is smoothly transited from 0 to the torque requested by a driver according to a set speed; when the engine torque request enable module is in the inactive state, the engine output torque is consistent with the driver requested torque.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A method for improving the ride comfort of a vehicle with automatic transmission, comprising the steps of:
monitoring the hydraulic torque state of the gearbox, the rotating speed of an engine, the rotating speed of an input shaft of the gearbox and the torque requested by a driver, and synchronously sending monitoring data to a traveling computer in real time;
the driving computer judges whether to activate the engine torque request according to the monitoring data;
when the engine torque request is in an activated state, the driving computer sets the engine output torque to be equal to 0, and then the engine output torque smoothly transits from 0 to the torque requested by the driver according to a set speed.
2. The method of improving ride comfort of an automated vehicle as recited in claim 1, wherein the engine output torque is maintained consistent with the driver requested torque when the engine torque request is in an inactive state.
3. The method of improving ride comfort of an automated vehicle as recited in claim 1, wherein the determination by the driver computer of the engine torque request based on the monitored data is conditioned by: the hydraulic torque state of the gearbox is an opening state, the rotating speed of an engine is lower than the rotating speed of an input shaft of the gearbox, and meanwhile, the torque requested by a driver is larger than zero, so that the driver steps on an accelerator to accelerate.
4. The method of improving ride of an automatically geared vehicle of claim 1, wherein the transmission fluid torque state comprises an on state, a locked state, a lubricous state, and an unengaged state.
5. The method of improving ride quality in an automatic transmission vehicle of claim 1, further comprising monitoring engine water temperature and sending the monitored data to a vehicle computer in real time, wherein the engine torque request is allowed to be activated when the monitored engine water temperature is higher than a set value and not allowed to be activated when the monitored engine water temperature is lower than the set value.
6. The method for improving ride of an automatically shiftable vehicle of claim 5, wherein the engine water temperature is set at 60 to 70 ℃.
7. The method of improving ride comfort of an automated guided vehicle (AMR) of claim 1, further comprising monitoring transmission gear information, wherein the transmission gear information comprises forward gear, neutral gear, and reverse gear, and sending the monitored data to a vehicle computer in real time and in synchronization, wherein the engine torque request is allowed to be activated when the transmission gear information is forward gear and not allowed to be activated when the transmission gear information is neutral or reverse gear.
8. The method of claim 1, further comprising monitoring whether communication between the engine control unit and the transmission control unit is normal and sending the monitored data to a vehicle computer in real time, wherein the engine torque request is allowed to be activated when communication between the engine control unit and the transmission control unit is normal, and wherein the engine torque request is not allowed to be activated when communication between the engine control unit and the transmission control unit is faulty.
9. An apparatus for improving ride comfort of a vehicle in an automatic transmission, comprising:
the monitoring module is used for monitoring whether the transmission liquid torque state, the engine rotating speed, the rotating speed of an input shaft of the transmission, the torque requested by a driver, the engine water temperature, the transmission gear information and the communication between the engine control unit and the transmission control unit of the vehicle are normal or not in real time;
the engine torque request activation module is used for judging whether to activate the engine torque request, and when the liquid torque state of the gearbox is an open state, the rotating speed of the engine is lower than the rotating speed of an input shaft of the gearbox, and simultaneously the torque requested by the driver is larger than zero, which indicates that the driver steps on an accelerator for acceleration, the engine torque request activation module is in an activation state;
the driving computer is used for receiving the monitoring data of the monitoring module in real time and judging whether the vehicle activates the engine torque request or not according to the monitoring data; when the engine torque request activation module is in an activation state, the driving computer sets the output torque of the engine to be equal to 0, and then the output torque of the engine is smoothly transited from 0 to the torque requested by a driver according to a set speed; when the engine torque request enable module is in the inactive state, the engine output torque is consistent with the driver requested torque.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010951671.1A CN112026778A (en) | 2020-09-11 | 2020-09-11 | Method and device for improving driving smoothness of automatic transmission vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010951671.1A CN112026778A (en) | 2020-09-11 | 2020-09-11 | Method and device for improving driving smoothness of automatic transmission vehicle |
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| CN112026778A true CN112026778A (en) | 2020-12-04 |
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| CN202010951671.1A Pending CN112026778A (en) | 2020-09-11 | 2020-09-11 | Method and device for improving driving smoothness of automatic transmission vehicle |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1846647A1 (en) * | 2005-02-08 | 2007-10-24 | Peugeot Citroën Automobiles Sa | Method for control of the reversal of power in a system comprising a torque converter and mechanical unit encompassing said method |
| CN109162815A (en) * | 2018-09-27 | 2019-01-08 | 宁波吉利汽车研究开发有限公司 | A kind of vehicle motor control method and control system |
| CN109611546A (en) * | 2019-01-24 | 2019-04-12 | 浙江吉利汽车研究院有限公司 | A kind of jerk management system and method for power transmission system of vehicle |
| CN111058956A (en) * | 2018-10-17 | 2020-04-24 | 上海汽车集团股份有限公司 | Engine torque control method and device and vehicle |
-
2020
- 2020-09-11 CN CN202010951671.1A patent/CN112026778A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1846647A1 (en) * | 2005-02-08 | 2007-10-24 | Peugeot Citroën Automobiles Sa | Method for control of the reversal of power in a system comprising a torque converter and mechanical unit encompassing said method |
| DE602006004560D1 (en) * | 2005-02-08 | 2009-02-12 | Peugeot Citroen Automobiles Sa | EM SYSTEM WITH A TORQUE TRANSFORMER AND MECHANIS |
| CN109162815A (en) * | 2018-09-27 | 2019-01-08 | 宁波吉利汽车研究开发有限公司 | A kind of vehicle motor control method and control system |
| CN111058956A (en) * | 2018-10-17 | 2020-04-24 | 上海汽车集团股份有限公司 | Engine torque control method and device and vehicle |
| CN109611546A (en) * | 2019-01-24 | 2019-04-12 | 浙江吉利汽车研究院有限公司 | A kind of jerk management system and method for power transmission system of vehicle |
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