CN114771474A - Reverse gear mode braking system based on mechanical hydraulic stepless speed changer - Google Patents
Reverse gear mode braking system based on mechanical hydraulic stepless speed changer Download PDFInfo
- Publication number
- CN114771474A CN114771474A CN202210453551.8A CN202210453551A CN114771474A CN 114771474 A CN114771474 A CN 114771474A CN 202210453551 A CN202210453551 A CN 202210453551A CN 114771474 A CN114771474 A CN 114771474A
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- CN
- China
- Prior art keywords
- stepless speed
- brake
- electronic control
- speed changer
- hydraulic
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 206010039203 Road traffic accident Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
- B60T7/22—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle, or by means of contactless obstacle detectors mounted on the vehicle
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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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/101—Infinitely variable gearings
- B60W10/103—Infinitely variable gearings of fluid type
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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
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
- B60W10/184—Conjoint control of vehicle sub-units of different type or different function including control of braking systems with wheel brakes
-
- 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, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18036—Reversing
Abstract
A reverse gear mode brake system based on a mechanical hydraulic stepless speed changer mainly comprises an engine, an input member, a Ravigneaux planetary gear mechanism, a hydraulic transmission mechanism, an output member, a clutch and brake assembly, an electronic control system, a sensor module and a brake system. The engine is used for providing power for the transmission; the input component is used for transmitting power to the Ravigneaux planetary gear mechanism and the hydraulic transmission mechanism; the planetary gear mechanism and the hydraulic transmission mechanism are used for forming a mechanical hydraulic stepless speed changer and have the advantages of stepless speed change, stable transmission and the like. The sensor module is used for monitoring the distance of a vehicle tail obstacle after a driver is in a reverse gear mode and transmitting a signal to the electronic control unit in real time; the electronic control system is used for judging whether the vehicle has the risk of colliding with the obstacle according to the sensor parameter module; the braking system is used for decelerating or stopping the vehicle. The braking system can reduce the occurrence of collision accidents in the process of backing the vehicle.
Description
Technical Field
The invention belongs to the technical field of automobiles, particularly relates to an intelligent system, and particularly relates to an intelligent system for automatic braking parameters of a vehicle.
Background
With the increasing number of motor vehicles in recent years, the number of collision events between vehicles and objects and between vehicles and people is also increasing, the traditional brake system still uses an artificial brake mode, and the emergency situation in backing a car is simply due to the consciousness of a driver and is likely not to be reflected, so that the brake is not performed in time, and traffic accidents are caused.
The automatic reverse braking system is characterized in that when the vehicle is in an emergency state during reverse, the vehicle is automatically braked instead of the action of stepping on the brake by the driver, so that the situations that the driver cannot find out timely, forget to step on the brake, and cannot step on the brake timely are avoided, the driver and the vehicle are protected, and traffic accidents are avoided or reduced.
Disclosure of Invention
The invention aims to provide a reverse mode brake system based on a mechanical hydraulic stepless speed changer, and meanwhile, the system overcomes the disadvantage of flameout of emergency brake in the traditional mechanical reverse mode, and realizes the functions of stable backing and automatic emergency brake.
The present invention achieves the above technical objects by the following technical means.
The reverse gear mode brake system based on the mechanical hydraulic stepless speed changer is characterized in that: the hydraulic control system mainly comprises an engine, an input member, a Ravigneaux planetary gear mechanism, a hydraulic transmission mechanism, an output member, a clutch and brake assembly, an electronic control system, a sensor module and a brake system; the engine is connected with the input component; the input member and the Ravigneaux planetary gear mechanism are connected with the hydraulic transmission mechanism and used for inputting transmission power; the Ravigneaux planetary gear mechanism is connected with the hydraulic transmission mechanism to form a mechanical hydraulic stepless speed changer module for realizing stepless speed regulation of the vehicle; the output member is connected with wheels and is used for outputting power so as to drive the vehicle to run; the clutch and brake assembly is connected with the mechanical hydraulic stepless speed changer module and is used for controlling gear shifting, speed regulation and steering of the mechanical hydraulic stepless speed changer; the sensor module is connected with the electronic control system and used for monitoring the distance of a vehicle tail obstacle and transmitting a signal to the electronic control system in real time after a driver is in a reverse gear mode; and the electronic control system is connected with the brake system and is used for taking braking measures according to instructions of the electronic control system.
The mechanical hydraulic stepless speed changer module comprises an input component, a planetary gear assembly, an output component, a hydraulic transmission mechanism, a power output mechanism, a clutch and a brake component. The pure hydraulic transmission mechanism has the advantages of stable work, small reversing impact and the like. The driver is engaged in a reverse gear mode, power is input through a pure hydraulic transmission mechanism, the rotating speed of an input member is opposite to that of an output member, the output member is connected with wheels, and the wheels rotate reversely, so that a stable reverse gear mode and an emergency brake mode are realized.
Drawings
FIG. 1 is a block diagram of a reverse mode braking system for a mechanical hydraulic continuously variable transmission according to the present invention;
FIG. 2 is a power flow schematic of the reverse mode hydrostatic transmission of the present invention;
in the figure:
1-an engine; 2-input shaft gear; 3-an input shaft; 4-input shaft gear; 5-input shaft gear; 6-one-way pump gear; 7-a one-way pump; 8-a pressure reducing valve; 9-an electromagnetic valve; 10-a quantitative motor; 11-a dosing motor gear; 12-a primary sun gear; 13-a main sun gear; 14-an idler wheel; 15-a planet carrier; 16-short planet wheels; 17-long planetary gear; 18-a gear ring; 19-rear sun gear; 20-rear sun gear; 21-an idler wheel; 22-a wheel; 23-wheel brakes; 24-accelerator pedal; 25-an electronic control system; 26-reverse mode; 27-a sensor module; 28-pedestrian (obstacle); 29-clutch C2; 30-clutch C1; 31-clutch C3; 32-brake B1; 33-brake B2; 34-brake B3.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
As shown in FIG. 1, the reverse gear mode braking system based on the mechanical hydraulic stepless transmission comprises a sensor module, an electronic control unit module, a mechanical hydraulic stepless transmission module and a brake module.
The sensor module 27 is connected with the electronic control system 25 and is used for transmitting a distance signal of the obstacle 28 to the electronic control system 25; the electronic control unit module 25 is connected with the sensor module 27 for receiving signal parameters; connected with the reverse mode 26 for commanding transmission operating steering; is connected with an accelerator pedal 24 and is used for controlling the rotating speed of the engine 1; connected to the wheel brakes 23 for commanding the execution of a braking action.
The mechanical hydraulic stepless speed changer module comprises an input shaft 3, input gears 2, 4 and 5, a one-way pump 7, a pressure reducing valve 8 electromagnetic valve 9, a quantitative motor 10, a main sun gear 13, a planet carrier 15, a short planet gear 16, a long planet gear 17, a gear ring 18 and a rear sun gear 19; the input gear 5 is connected with the one-way pump 7 to input hydraulic power; the electromagnetic valve 9 is used for controlling the steering of the quantitative motor 10; the quantitative motor 10 is used for controlling the rotation direction and the rotation speed of the gear 11; the main sun gear 13, the planet carrier 15, the short planet gears 16, the long planet gears 17 and the gear ring 18 form a Ravigneaux type planetary gear mechanism. The one-way pump 7, the pressure reducing valve 8, the electromagnetic valve 9 and the quantitative motor 10 form a hydraulic actuating mechanism. The brake module 23 is connected with the shaft and the wheels to form a brake actuating mechanism.
Firstly, when a reverse mode is engaged, the mechanical hydraulic stepless speed changer is reversely driven at a low speed, and the mechanical hydraulic stepless speed changer is connected with a clutch C3, a brake B2, a brake B3 as shown in the attached figure 2, wherein a 31-clutch C3, a brake B2, a brake B3 are combined, the left position of the electromagnetic valve 9 is electrified, the power input by the engine 1 is transmitted to the hydraulic actuating mechanism one-way pump 7, the pressure reducing valve 8, the electromagnetic valve 9, the quantitative motor 10, the main sun gear 13, the short planet gear 16, the long planet gear 17 and the gear ring 18 through the gear 5, and the gear ring 18 is connected with an output member to realize the reverse low-speed hydraulic transmission, so that the reverse low-speed hydraulic transmission can be realized, and the requirements of smooth reverse and smooth running of the engine can be met during emergency braking.
Then, in the process of backing the automobile, when the automobile encounters an obstacle, the sensor module 27 detects the distance between the obstacle and the tail of the automobile by using a radar, sends the parameters to the electronic control unit module 25, and the electronic control unit module analyzes the parameters, and when the distance is smaller than the set safe distance range, the sensor module automatically intervenes in a brake system of the automobile and sends a separation instruction to an electric clutch pump in a brake, so that the automobile is automatically braked.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (2)
1. The utility model provides a reverse gear mode braking system based on mechanical hydraulic pressure buncher, the concrete characteristics are: the system mainly comprises an engine, an input member, a Ravigneaux planetary gear mechanism, a hydraulic transmission mechanism, an output member, a clutch and brake assembly, an electronic control system, a sensor module and a brake system; the engine is connected with the input component; the input component and the Ravigneaux planetary gear mechanism are connected with the hydraulic transmission mechanism and used for inputting transmission power; the Ravigneaux planetary gear mechanism is connected with the hydraulic transmission mechanism to form a mechanical hydraulic stepless speed changer module for realizing stepless speed regulation of the vehicle; the output member is connected with wheels and is used for outputting power so as to drive the vehicle to run; the clutch and brake assembly is connected with the mechanical hydraulic stepless speed changer module and is used for controlling gear shifting, speed regulation and steering of the mechanical hydraulic stepless speed changer; the sensor module is connected with the electronic control system and used for monitoring the distance of a vehicle tail obstacle and transmitting a signal to the electronic control system in real time after a driver is in a reverse gear mode; and the electronic control system is connected with the brake system and is used for taking braking measures according to the instructions of the electronic control system.
2. The reverse gear mode braking system based on the mechanical hydraulic continuously variable transmission as claimed in claim 1, characterized in that: the mechanical hydraulic stepless speed changer module comprises an input component, a planetary gear assembly, an output component, a hydraulic transmission mechanism, a power output mechanism, a clutch and a brake component; the pure hydraulic transmission mechanism has the advantages of stable work, small reversing impact and the like; the driver is engaged in a reverse gear mode, power is input through a pure hydraulic transmission mechanism, the rotating speed of an input member is opposite to that of an output member, the output member is connected with wheels, and the wheels rotate reversely, so that a stable reverse gear mode and an emergency brake mode are realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210453551.8A CN114771474A (en) | 2022-04-27 | 2022-04-27 | Reverse gear mode braking system based on mechanical hydraulic stepless speed changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210453551.8A CN114771474A (en) | 2022-04-27 | 2022-04-27 | Reverse gear mode braking system based on mechanical hydraulic stepless speed changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114771474A true CN114771474A (en) | 2022-07-22 |
Family
ID=82433937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210453551.8A Pending CN114771474A (en) | 2022-04-27 | 2022-04-27 | Reverse gear mode braking system based on mechanical hydraulic stepless speed changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114771474A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204354823U (en) * | 2014-12-17 | 2015-05-27 | 朱恒 | Automobile-used numerical control stepless variable ratio drive system |
| CN207842665U (en) * | 2017-11-17 | 2018-09-11 | 河南少林客车股份有限公司 | A kind of speed changer and dynamical system and automobile using the speed changer |
| CN112248791A (en) * | 2020-10-28 | 2021-01-22 | 湘潭大学 | Hybrid continuously variable transmission starting control device and control method |
| CN215154542U (en) * | 2021-03-12 | 2021-12-14 | 石河子大学 | Automatic braking system based on reverse gear mode of mechanical hydraulic stepless speed changer |
-
2022
- 2022-04-27 CN CN202210453551.8A patent/CN114771474A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204354823U (en) * | 2014-12-17 | 2015-05-27 | 朱恒 | Automobile-used numerical control stepless variable ratio drive system |
| CN207842665U (en) * | 2017-11-17 | 2018-09-11 | 河南少林客车股份有限公司 | A kind of speed changer and dynamical system and automobile using the speed changer |
| CN112248791A (en) * | 2020-10-28 | 2021-01-22 | 湘潭大学 | Hybrid continuously variable transmission starting control device and control method |
| CN215154542U (en) * | 2021-03-12 | 2021-12-14 | 石河子大学 | Automatic braking system based on reverse gear mode of mechanical hydraulic stepless speed changer |
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