CN112065980A - Torque control method and device and vehicle - Google Patents
Torque control method and device and vehicle Download PDFInfo
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- CN112065980A CN112065980A CN202010869351.1A CN202010869351A CN112065980A CN 112065980 A CN112065980 A CN 112065980A CN 202010869351 A CN202010869351 A CN 202010869351A CN 112065980 A CN112065980 A CN 112065980A
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- torque
- engine
- gearbox
- rotating speed
- input shaft
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- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
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- 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
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
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- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H2059/147—Transmission input torque, e.g. measured or estimated engine torque
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention provides a torque control method, a torque control device and a vehicle, wherein the method comprises the following steps: acquiring a working state signal of a hydraulic torque converter of a gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox under a vehicle driving state; if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions, adjusting the output torque of the engine to a set threshold value; and controlling the output torque of the engine to be adjusted to the required torque of the driver from the set threshold value according to the set speed. According to the scheme, when the relation between the rotating speed of the engine and the rotating speed of the input shaft of the gearbox changes, the output torque of the engine of the vehicle is adjusted to the set threshold, and the output torque of the engine is controlled to be adjusted to the torque required by the driver from the set threshold according to the set speed, so that the driving smoothness can be improved to a certain extent, and the driving pause and frustration are reduced.
Description
Technical Field
The invention relates to the technical field of automobile control, in particular to a torque control method, a torque control device and a vehicle.
Background
For an automobile equipped with an automatic gear, when the rotating speed of an engine passes through the rotating speed of an input shaft of a gearbox, namely the automobile slides and a hydraulic torque converter is opened, the rotating speed of the input shaft of the gearbox is dragged by the automobile backwards to be higher than the rotating speed of the engine, at the moment, an accelerator is stepped on for acceleration, when the rotating speed of the engine is changed from being lower than the rotating speed of the gearbox to being higher than the rotating speed of the gearbox, the automobile can have impact, obvious jerk is generated, and driving experience is poor.
Disclosure of Invention
The embodiment of the invention provides a torque control method, a torque control device and a vehicle, and aims to solve the 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, the vehicle generates obvious jerking and poor driving experience.
In order to solve the above technical problem, an embodiment of the present invention provides the following technical solutions:
an embodiment of the first aspect of the invention provides a torque control method, including:
acquiring a working state signal of a hydraulic torque converter of a gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox under a vehicle driving state;
if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions, adjusting the output torque of the engine to a set threshold value;
and controlling the output torque of the engine to be adjusted to the required torque of the driver from the set threshold value according to the set speed.
Optionally, the method further comprises:
monitoring an accelerator pedal opening signal in an open state of a hydraulic torque converter of the gearbox;
and when the accelerator opening signal is monitored and the engine speed is changed from being lower than the speed of the input shaft of the gearbox to being higher than the speed of the input shaft of the gearbox, determining that the preset condition is met.
Optionally, if the operating state signal of the hydraulic torque converter of the transmission, the engine rotation speed, and the transmission input shaft rotation speed satisfy preset conditions, adjusting the output torque of the engine to the set threshold includes:
if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions, activating a torque control function signal;
and adjusting the output torque of the engine to a set threshold value according to the torque control function signal.
Alternatively, the controlling of the output torque of the engine to be adjusted from the set threshold to the driver's required torque includes:
determining the required torque of the driver according to the accelerator pedal opening signal;
and adjusting the output torque of the engine to the required torque of the driver from the set threshold.
Optionally, the method further comprises:
and if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox do not meet the preset conditions, controlling the output torque of the engine to be adjusted to the torque required by the driver from the current output torque.
An embodiment of a second aspect of the present invention provides a torque control device, comprising:
the acquisition module is used for acquiring a working state signal of a hydraulic torque converter of the gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox under the driving state of a vehicle;
the adjusting module is used for adjusting the output torque of the engine to a set threshold value if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions;
and the first control module is used for controlling the output torque of the engine to be adjusted to the required torque of the driver from the set threshold value according to the set speed.
Optionally, the apparatus further comprises:
the monitoring module is used for monitoring an accelerator pedal opening signal under the opening state of a hydraulic torque converter of the gearbox;
and the judging module is used for determining that the preset condition is met when the opening signal of the accelerator pedal is monitored and the rotating speed of the engine is changed from being lower than the rotating speed of the input shaft of the gearbox to being higher than the rotating speed of the input shaft of the gearbox.
Optionally, the adjusting module includes:
the activation unit is used for activating a torque control function signal if a working state signal of a hydraulic torque converter of the gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox meet preset conditions;
and the first adjusting unit is used for adjusting the output torque of the engine to a set threshold value according to the torque control function signal.
Optionally, the first control module comprises:
a determination unit configured to determine a required torque of the driver based on the accelerator pedal on signal;
and a second adjusting unit for adjusting the output torque of the engine from the set threshold to the driver's required torque.
Optionally, the apparatus further comprises:
and the second control module is used for controlling the output torque of the engine to be adjusted to the torque required by the driver from the current output torque if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox do not meet the preset conditions.
An embodiment of a third aspect of the invention provides a vehicle including the torque control apparatus described above.
The invention has the beneficial effects that:
according to the scheme, a working state signal of a hydraulic torque converter of the gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox are obtained in a vehicle driving state; if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions, adjusting the output torque of the engine to a set threshold value; and controlling the output torque of the engine to be adjusted to the required torque of the driver from the set threshold value according to the set speed. When the relation between the rotating speed of the engine and the rotating speed of the input shaft of the gearbox changes, the output torque of the engine of the vehicle is adjusted to be a set threshold value, and the output torque of the engine is controlled to be adjusted to the torque required by a driver from the set threshold value according to a set speed, so that the driving smoothness can be improved to a certain extent, and the vehicle jerking feeling is reduced.
Drawings
FIG. 1 is a flow chart of a torque control method provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a torque control device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a torque control method, a torque control device and a vehicle, aiming at the 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, the vehicle generates obvious jerk and the driving experience is poor.
As shown in fig. 1, an embodiment of the first aspect of the present invention provides a torque control method, including:
s101: acquiring a working state signal of a hydraulic torque converter of a gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox under a vehicle driving state;
s102: if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions, adjusting the output torque of the engine to a set threshold value;
s103: and controlling the output torque of the engine to be adjusted to the required torque of the driver from the set threshold value according to the set speed.
It should be noted that the solution of the invention applies to vehicles equipped with automatic transmission.
In the prior art, when the relationship between the engine speed and the transmission input shaft speed changes, the vehicle has impact and produces a jerk, and the driving experience is poor, so that torque processing is required. Preferably, in the present embodiment, the set threshold is an output torque value close to 0, and may be adjusted by setting an offset amount based on 0 according to actual conditions.
The method further comprises the following steps:
monitoring an accelerator pedal opening signal in an open state of a hydraulic torque converter of the gearbox;
and when the accelerator opening signal is monitored and the engine speed is changed from being lower than the speed of the input shaft of the gearbox to being higher than the speed of the input shaft of the gearbox, determining that the preset condition is met.
In this embodiment, in an open state of a torque converter of the transmission, before a driver steps on an accelerator pedal, an engine speed is lower than a transmission input shaft speed, that is, the engine is in a drag-down condition, at this time, an accelerator pedal open signal, that is, the driver steps on an accelerator for acceleration, is detected, and then, when the engine speed is higher than the transmission input shaft speed, the output torque of the engine is adjusted to a set threshold, and the output torque of the engine is controlled to be adjusted from the set threshold to a driver required torque according to a set rate.
If the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions, adjusting the output torque of the engine to a set threshold value comprises the following steps:
if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions, activating a torque control function signal;
and adjusting the output torque of the engine to a set threshold value according to the torque control function signal.
It should be noted that, if the operating state signal of the hydraulic torque converter of the transmission, the engine speed and the transmission input shaft speed meet the condition that an accelerator pedal opening signal is monitored in the opening state of the hydraulic torque converter of the transmission, and when the engine speed is changed from being lower than the transmission input shaft speed to being higher than the transmission input shaft speed, a torque control function signal is activated, at this time, the output torque of the engine is adjusted to a set threshold value, for example, a value of 0, and then the output torque of the engine is adjusted to the torque required by the driver according to a set rate from the set threshold value.
The controlling of the output torque of the engine to be adjusted from the set threshold to the driver's required torque includes:
determining the required torque of the driver according to the accelerator pedal opening signal;
and adjusting the output torque of the engine to the required torque of the driver from the set threshold.
The driver's required torque is determined based on the accelerator pedal on signal and the degree of opening of the accelerator pedal.
The method further comprises the following steps:
and if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox do not meet the preset conditions, controlling the output torque of the engine to be adjusted to the torque required by the driver from the current output torque.
It should be noted that if the operating state signal of the hydraulic torque converter of the transmission, the engine speed and the transmission input shaft speed do not meet the preset condition that the engine speed is changed from being lower than the transmission input shaft speed to being higher than the transmission input shaft speed, that is, the torque control function signal is not activated, the output torque of the engine is controlled to be directly adjusted to the torque required by the driver from the output torque if the accelerator pedal opening signal is monitored and the engine speed is not changed from being lower than the transmission input shaft speed to being higher than the transmission input shaft speed.
According to the embodiment of the invention, when a driver steps on an accelerator pedal in the opening state of a hydraulic torque converter of a gearbox, and 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, namely the output torque of the engine is adjusted to be a set threshold value, and the output torque of the engine is controlled to be adjusted to be the required torque of the driver from the set threshold value according to a set rate. Through experimental tests, the scheme can improve the smoothness of vehicle driving to a certain extent and reduce the jerking feeling.
As shown in fig. 2, an embodiment of a second aspect of the present invention provides a torque control device, including:
the acquiring module 201 is used for acquiring a working state signal of a hydraulic torque converter of a gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox under a vehicle driving state;
the adjusting module 202 is configured to adjust an output torque of an engine to a set threshold if a working state signal of a hydraulic torque converter of the transmission, an engine rotation speed and a transmission input shaft rotation speed meet preset conditions;
and the first control module 203 is used for controlling the output torque of the engine to be adjusted to the required torque of the driver from the set threshold value according to the set speed.
The device further comprises:
the monitoring module is used for monitoring an accelerator pedal opening signal under the opening state of a hydraulic torque converter of the gearbox;
and the judging module is used for determining that the preset condition is met when the opening signal of the accelerator pedal is monitored and the rotating speed of the engine is changed from being lower than the rotating speed of the input shaft of the gearbox to being higher than the rotating speed of the input shaft of the gearbox.
The adjusting module 202 includes:
the activation unit is used for activating a torque control function signal if a working state signal of a hydraulic torque converter of the gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox meet preset conditions;
and the first adjusting unit is used for adjusting the output torque of the engine to a set threshold value according to the torque control function signal.
The first control module 203 includes:
a determination unit configured to determine a required torque of the driver based on the accelerator pedal on signal;
and a second adjusting unit for adjusting the output torque of the engine from the set threshold to the driver's required torque.
The device further comprises:
and the second control module is used for controlling the output torque of the engine to be adjusted to the torque required by the driver from the current output torque if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox do not meet the preset conditions.
An embodiment of a third aspect of the invention provides a vehicle including the torque control apparatus described above.
In the vehicle provided with the torque control device, when the driver steps on the accelerator pedal in the state where the torque converter of the transmission is on and the engine speed is changed from below the transmission input shaft speed to above the transmission input shaft speed, the torque control device performs torque processing, that is, adjusts the output torque of the engine to a set threshold value, and controls the output torque of the engine to be adjusted from the set threshold value to the driver's required torque at a set rate. Through experimental tests, the scheme can improve the smoothness of vehicle driving to a certain extent and reduce the jerking feeling.
While the preferred embodiments of the present invention have been described, 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 following claims.
Claims (11)
1. A torque control method, comprising:
acquiring a working state signal of a hydraulic torque converter of a gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox under a vehicle driving state;
if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions, adjusting the output torque of the engine to a set threshold value;
and controlling the output torque of the engine to be adjusted to the required torque of the driver from the set threshold value according to the set speed.
2. The torque control method of claim 1, further comprising:
monitoring an accelerator pedal opening signal in an open state of a hydraulic torque converter of the gearbox;
and when the accelerator opening signal is monitored and the engine speed is changed from being lower than the speed of the input shaft of the gearbox to being higher than the speed of the input shaft of the gearbox, determining that the preset condition is met.
3. The torque control method according to claim 1, wherein if the operating state signal of the torque converter of the transmission, the engine speed and the transmission input shaft speed satisfy preset conditions, adjusting the output torque of the engine to the set threshold value comprises:
if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions, activating a torque control function signal;
and adjusting the output torque of the engine to a set threshold value according to the torque control function signal.
4. The torque control method according to claim 2, wherein the controlling of the output torque of the engine to be adjusted from the set threshold to the driver's required torque includes:
determining the required torque of the driver according to the accelerator pedal opening signal;
and adjusting the output torque of the engine to the required torque of the driver from the set threshold.
5. The torque control method of claim 1, further comprising:
and if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox do not meet the preset conditions, controlling the output torque of the engine to be adjusted to the torque required by the driver from the current output torque.
6. A torque control device, comprising:
the acquisition module is used for acquiring a working state signal of a hydraulic torque converter of the gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox under the driving state of a vehicle;
the adjusting module is used for adjusting the output torque of the engine to a set threshold value if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox meet preset conditions;
and the first control module is used for controlling the output torque of the engine to be adjusted to the required torque of the driver from the set threshold value according to the set speed.
7. The torque control device according to claim 6, characterized in that the device further comprises:
the monitoring module is used for monitoring an accelerator pedal opening signal under the opening state of a hydraulic torque converter of the gearbox;
and the judging module is used for determining that the preset condition is met when the opening signal of the accelerator pedal is monitored and the rotating speed of the engine is changed from being lower than the rotating speed of the input shaft of the gearbox to being higher than the rotating speed of the input shaft of the gearbox.
8. The torque control device of claim 6, wherein the adjustment module comprises:
the activation unit is used for activating a torque control function signal if a working state signal of a hydraulic torque converter of the gearbox, the rotating speed of an engine and the rotating speed of an input shaft of the gearbox meet preset conditions;
and the first adjusting unit is used for adjusting the output torque of the engine to a set threshold value according to the torque control function signal.
9. The torque control device of claim 7, wherein the first control module comprises:
a determination unit configured to determine a required torque of the driver based on the accelerator pedal on signal;
and a second adjusting unit for adjusting the output torque of the engine from the set threshold to the driver's required torque.
10. The torque control device according to claim 6, characterized in that the device further comprises:
and the second control module is used for controlling the output torque of the engine to be adjusted to the torque required by the driver from the current output torque if the working state signal of the hydraulic torque converter of the gearbox, the rotating speed of the engine and the rotating speed of the input shaft of the gearbox do not meet the preset conditions.
11. A vehicle characterized by comprising the torque control apparatus according to any one of claims 6 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010869351.1A CN112065980A (en) | 2020-08-26 | 2020-08-26 | Torque control method and device and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010869351.1A CN112065980A (en) | 2020-08-26 | 2020-08-26 | Torque control method and device and vehicle |
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| CN112065980A true CN112065980A (en) | 2020-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010869351.1A Pending CN112065980A (en) | 2020-08-26 | 2020-08-26 | Torque control method and device and vehicle |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1853999A (en) * | 2005-04-28 | 2006-11-01 | 日产自动车株式会社 | Mode transition control system for hybrid vehicle |
| CN103392085A (en) * | 2011-03-31 | 2013-11-13 | 爱信艾达株式会社 | Transmission control device, and method for determining generation of braking torque in transmission |
| CN106762173A (en) * | 2016-12-15 | 2017-05-31 | 北京汽车研究总院有限公司 | A kind of control method for engine speed, device and automobile |
| CN108253134A (en) * | 2018-01-05 | 2018-07-06 | 重庆青山工业有限责任公司 | The remained capacity control system and functional module construction of 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 |
-
2020
- 2020-08-26 CN CN202010869351.1A patent/CN112065980A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1853999A (en) * | 2005-04-28 | 2006-11-01 | 日产自动车株式会社 | Mode transition control system for hybrid vehicle |
| CN103392085A (en) * | 2011-03-31 | 2013-11-13 | 爱信艾达株式会社 | Transmission control device, and method for determining generation of braking torque in transmission |
| CN106762173A (en) * | 2016-12-15 | 2017-05-31 | 北京汽车研究总院有限公司 | A kind of control method for engine speed, device and automobile |
| CN108253134A (en) * | 2018-01-05 | 2018-07-06 | 重庆青山工业有限责任公司 | The remained capacity control system and functional module construction of 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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Application publication date: 20201211 |