CN109281898A - Double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox - Google Patents
Double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox Download PDFInfo
- Publication number
- CN109281898A CN109281898A CN201811359976.2A CN201811359976A CN109281898A CN 109281898 A CN109281898 A CN 109281898A CN 201811359976 A CN201811359976 A CN 201811359976A CN 109281898 A CN109281898 A CN 109281898A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- energy
- stepless gearbox
- pressure accumulator
- way
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 238000011084 recovery Methods 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
-
- 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
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
- F16H47/08—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type the mechanical gearing being of the type with members having orbital motion
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Arrangements (AREA)
- Control Of Fluid Gearings (AREA)
Abstract
The invention discloses a kind of double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox, including Brake energy recovery releasing unit and hydraulic mechanical stepless gearbox, when hydraulic braking, the braking energy transmitted on driving wheel is transmitted to hydraulic motor through the transmission gear of hydraulic mechanical stepless gearbox, hydraulic motor realizes the control to severity of braking by control discharge capacity, mechanical energy is converted into hydraulic energy through hydraulic motor, hydraulic energy is transmitted to low pressure accumulator by 3-position 4-way proportion magnetic valve, two position two-way valve, is stored in low pressure accumulator；When high pressure accumulator provides energy driving vehicle traveling, hydraulic energy in high pressure accumulator is transmitted to hydraulic motor through two position two-way valve, 3-position 4-way proportion magnetic valve, hydraulic motor is in motor operating conditions at this time, it is mechanical energy by hydraulic energy transfer, mechanical energy after conversion is transmitted to hydraulic mechanical stepless gearbox, it drives vehicle to advance, by controlling the discharge capacity of hydraulic motor, realizes the control to vehicle drive force.
Description
Technical field
The present invention relates to a kind of double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox.
Background technique
Hydraulic mechanical stepless gearbox has the characteristics that controllable variable speed, transmission power are big, transmission efficiency is high, can be effective
Improve power performance, the economy of heavy-duty truck.But truck can be faced and frequently be opened in city operating condition downward driving
Energy regenerating when braking is used for vehicle launch by the situation stopped, and becoming raising vehicle fuel is Eco-power has efficacious prescriptions
Formula, the Hydraulic Power Transmission System in hydraulic mechanical stepless gearbox are to realize that Brake energy recovery provides the foundation.But it is present, by
It is limited in technical aspect, based on the brake energy recovering system of hydraulic mechanical stepless gearbox there are Brake energy recovery rate is low,
The problems such as structure is complicated, and control is difficult to realize, it is therefore desirable to design a kind of Brake energy recovery rate height, structure is simple, and control is difficult
Spend low hydraulic mechanical stepless gearbox brake energy recovering system.
Summary of the invention
Double accumulator systems based on hydraulic mechanical stepless gearbox that technical problem to be solved by the invention is to provide a kind of
The recycling of vehicle braking energy may be implemented in energy recovery system, and has Brake energy recovery rate height, to the original biography of vehicle
Dynamic system change is small, structure is simple, the advantages that being easily achieved.
In order to solve the above technical problems, the technical scheme is that double accumulation of energys based on hydraulic mechanical stepless gearbox
Device brake energy recovering system, including Brake energy recovery releasing unit and hydraulic mechanical stepless gearbox, the hydraulic machinery
It include the hydraulic speed-changing part and mechanical speed change part being arranged in parallel in stepless transmission, the hydraulic speed-changing part includes passing through
Fluid pressure line connected hydraulic pump and hydraulic motor, the Brake energy recovery releasing unit are described hydraulic including being connected in parallel
The 3-position 4-way proportion magnetic valve between the hydraulic motor is pumped, is also in series with respectively on the 3-position 4-way proportion magnetic valve
High pressure accumulator and low pressure accumulator, the high pressure accumulator are arranged in parallel with the low pressure accumulator, the high pressure accumulator
High pressure two position two-way valve, the low pressure accumulator and the 3-position 4-way are connected between the 3-position 4-way proportion magnetic valve
Low pressure two position two-way valve is connected between proportion magnetic valve.
As a preferred technical solution, the mechanical speed change part include with power end transmission connection power input shaft,
Transmission shaft, jackshaft and gear shift mechanism, are coaxially disposed between the power input shaft and the transmission shaft and transmission connects
Be connected to double planet wheel rows of mixing, the locked clutch for controlling the double planet wheel rows of mixing be installed on the transmission shaft, the jackshaft with
The power input shaft and the transmission shaft are arranged in parallel, and the jackshaft is sequentially connected to power output shaft.
As a preferred technical solution, the high pressure two position two-way valve and the low pressure two position two-way valve with described three four
High-pressure overflow valve is connected between logical proportion magnetic valve.
By adopting the above-described technical solution, double accumulator Brake energy recoveries system based on hydraulic mechanical stepless gearbox
It unites, including Brake energy recovery releasing unit and hydraulic mechanical stepless gearbox, includes in the hydraulic mechanical stepless gearbox
The hydraulic speed-changing part and mechanical speed change part being arranged in parallel, the hydraulic speed-changing part include the liquid being connected by fluid pressure line
Press pump and hydraulic motor, the Brake energy recovery releasing unit include being connected in the hydraulic pump and the hydraulic motor in parallel
Between 3-position 4-way proportion magnetic valve, be also in series with high pressure accumulator and low pressure respectively on the 3-position 4-way proportion magnetic valve
Accumulator, the high pressure accumulator are arranged in parallel with the low pressure accumulator, the high pressure accumulator and the 3-position 4-way ratio
It is connected with high pressure two position two-way valve between example solenoid valve, is connected between the low pressure accumulator and the 3-position 4-way proportion magnetic valve
It is connected to low pressure two position two-way valve；The beneficial effects of the present invention are: the braking energy transmitted on driving wheel passes through when carrying out hydraulic braking
The transmission gear of hydraulic mechanical stepless gearbox is transmitted to hydraulic motor, and hydraulic motor is realized strong to braking by control discharge capacity
The control of degree, mechanical energy are converted into hydraulic energy through hydraulic motor, and hydraulic energy passes through 3-position 4-way proportion magnetic valve, two position two-way valve
It is transmitted to low pressure accumulator, is stored in low pressure accumulator；High pressure accumulator provides energy, and when driving vehicle is advanced, high pressure stores
Hydraulic energy in energy device is transmitted to hydraulic motor through two position two-way valve, 3-position 4-way proportion magnetic valve, and hydraulic motor is at this time
Hydraulic energy transfer is mechanical energy by motor operating conditions, and the mechanical energy after conversion is transmitted to hydraulic mechanical stepless gearbox, drives vehicle
It advances, locks clutch at this time and be in an off state, by controlling the discharge capacity of hydraulic motor, realize the control to vehicle drive force
System；The present invention is under the premise of realizing vehicle braking energy recycling energy supply, to the hydraulic mechanical stepless gearbox of former vehicle equipment
Change small, brake energy recovering system control is simple, and Brake energy recovery rate is high, and plant maintenance is simple.
Detailed description of the invention
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Energy transmission path schematic diagram when Fig. 2 is Brake energy recovery of the embodiment of the present invention；
Energy transmission path schematic diagram when Fig. 3 is the energy supply starting of accumulator of the embodiment of the present invention；
In figure: 1- Brake energy recovery releasing unit；2- hydraulic mechanical stepless gearbox；3- hydraulic pump；4- hydraulic motor；
5- 3-position 4-way proportion magnetic valve；6- high pressure accumulator；7- low pressure accumulator；8- high pressure two position two-way valve；9- low pressure two two
Port valve；10- high-pressure overflow valve；11- power input shaft；12- transmission shaft；13- jackshaft；14- double planet wheel rows of mixing；15- locks clutch
Device；16- first gear pair；17- second gear pair；18- power output shaft；19- engine；The total clutch of 20-.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention is further explained.In the following detailed description, only pass through explanation
Mode describes certain exemplary embodiments of the invention.Undoubtedly, those skilled in the art will recognize,
In the case where without departing from the spirit and scope of the present invention, described embodiment can be repaired with a variety of different modes
Just.Therefore, attached drawing and description are regarded as illustrative in nature, and are not intended to limit the scope of the claims.
As shown in Figure 1, double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox, including Brake Energy
Amount recycling releasing unit 1 and hydraulic mechanical stepless gearbox 2, the interior hydraulic mechanical stepless gearbox 2 includes being arranged in parallel
Hydraulic speed-changing part and mechanical speed change part, the hydraulic speed-changing part include the hydraulic pump 3 and liquid being connected by fluid pressure line
Pressure motor 4, the Brake energy recovery releasing unit 1 include being connected in parallel between the hydraulic pump 3 and the hydraulic motor 4
3-position 4-way proportion magnetic valve 5, be also in series with high pressure accumulator 6 and low pressure respectively on the 3-position 4-way proportion magnetic valve 5
Accumulator 7, the high pressure accumulator 6 are arranged in parallel with the low pressure accumulator 7, the high pressure accumulator 6 with described three four
High pressure two position two-way valve 8, the low pressure accumulator 7 and the 3-position 4-way ratio electromagnetism are connected between logical proportion magnetic valve 5
Low pressure two position two-way valve 9 is connected between valve 5；The high pressure two position two-way valve 8 and the low pressure two position two-way valve 9 and described three
High-pressure overflow valve 10 is connected between position four-way proportion magnetic valve 5.
The mechanical speed change part include with 19 power end of engine transmission connection power input shaft 11, transmission shaft 12,
Jackshaft 13 and gear shift mechanism are coaxially disposed and are sequentially connected between the power input shaft 11 and the transmission shaft 12
There is double planet wheel rows of mixing 14, the locked clutch 15 for controlling the double planet wheel rows of mixing 14, the lock are installed on the transmission shaft 12
Dead clutch 15 is located between first gear pair 16 and second gear pair 17, for locking the double planet wheel rows of mixing 14, realizes and reduces
Purpose of the power output shaft 18 to transmission ratio between the hydraulic motor 4；The jackshaft 13 and the power input shaft 11 and
The transmission shaft 12 is arranged in parallel, the transmission connection of jackshaft 13 to power output shaft 18.
High pressure accumulator 6 described in the Brake energy recovery releasing unit 1 and the low pressure accumulator 7 can carry out dynamic
Conversion；When carrying out Brake energy recovery, the low pressure two position two-way valve 9 being connected with the low pressure accumulator 7 is opened, recycling
Braking energy be stored in the low pressure accumulator 7, carry out accumulation of energy；When carrying out braking energy release, the high pressure accumulator 6
It opens, the hydraulic motor 4 is driven to rotate.
The hydraulic pump 3 uses variable pump, and the hydraulic motor 4 uses pump/motor, when engine 19 provides energy
Amount, when vehicle is advanced, the discharge capacity (for maximum value) of pump/motor is fixed, forms variable pump-fixed displacement motor transmission system, mentions
Hydraulicdriven transmission efficiency in high hydraulic mechanical stepless gearbox 2, the high pressure accumulator 6 energize, and vehicle carries out hydraulic open
It is dynamic；When carrying out hydraulic braking, variable pump displacement control is zero, by changing the discharge capacity of pump/motor, is realized to severity of braking
Control.
The Brake energy recovery releasing unit 1 is connected in hydraulicdriven circuit, and the present embodiment includes braking energy
Recycling and accumulator energy supply two kinds of operating conditions of starting, the specific working principle is as follows:
It is illustrated in figure 2 the present embodiment and carries out energy transmission path schematic diagram when Brake energy recovery, carry out hydraulic braking
When, the total clutch 20 connecting on power input shaft 11 with engine 19 disconnects, by the power of engine 19 and speed changer
Input shaft 11 disconnects, and at this time combines locked clutch 15, and double planet wheel rows of mixing 14 can be locked, the braking energy transmitted on driving wheel
Transmission gear through hydraulic mechanical stepless gearbox 2 is transmitted to transmission shaft 12, is transmitted to pump/motor through transmission shaft 12, becomes
Pump/motor is measured by control discharge capacity, realizes the control to severity of braking, mechanical energy is converted into hydraulic energy, liquid through pump/motor
Pressure energy is transmitted to low pressure accumulator 7 by 3-position 4-way proportion magnetic valve 5, low pressure two position two-way valve 9, is stored in low pressure accumulator
In 7.
It is illustrated in figure 3 the present embodiment and carries out energy transmission path schematic diagram, high pressure accumulator 6 when accumulator energy supply starting
Energy is provided, when driving vehicle is advanced, the hydraulic energy in high pressure accumulator 6 is through high pressure two position two-way valve 8,3-position 4-way ratio electricity
Magnet valve 5 is transmitted to pump/motor, and pump/motor is in motor operating conditions at this time, is mechanical energy, conversion by hydraulic energy transfer
Mechanical energy afterwards is transmitted to the first gear pair 16 of hydraulic mechanical stepless gearbox 2 through transmission shaft 12, and it is defeated to be then passed to power
Shaft 18, driving vehicle are advanced, at this point, locked clutch 15 is in an off state, by controlling the discharge capacity of pump/motor,
Realize the control to vehicle drive force.
Hydraulic machinery variable speed of present invention under the premise of realizing vehicle braking energy recycling energy supply, to former vehicle equipment
The change of device is small, and brake energy recovering system control is simple, and Brake energy recovery rate is high, and plant maintenance is simple.
The above shows and describes the basic principle, main features and advantages of the invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (3)
1. double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox, including Brake energy recovery release are single
Member and hydraulic mechanical stepless gearbox, the interior hydraulic mechanical stepless gearbox includes the hydraulic speed-changing part being arranged in parallel and machine
Tool variable part, the hydraulic speed-changing part include the hydraulic pump and hydraulic motor being connected by fluid pressure line, it is characterised in that:
The Brake energy recovery releasing unit includes the 3-position 4-way being connected in parallel between the hydraulic pump and the hydraulic motor
Proportion magnetic valve is also in series with high pressure accumulator and low pressure accumulator, the height on the 3-position 4-way proportion magnetic valve respectively
Pressure accumulator is arranged in parallel with the low pressure accumulator, is connected between the high pressure accumulator and the 3-position 4-way proportion magnetic valve
It is connected to high pressure two position two-way valve, low pressure two two are connected between the low pressure accumulator and the 3-position 4-way proportion magnetic valve
Port valve.
2. double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox as described in claim 1, special
Sign is: the mechanical speed change part includes power input shaft, transmission shaft, jackshaft and the speed change with power end transmission connection
Gearshift is coaxially disposed and is sequentially connected with double planet wheel rows of mixing, the transmission between the power input shaft and the transmission shaft
Locked clutch for controlling the double planet wheel rows of mixing, the jackshaft and the power input shaft and the biography are installed on axis
Moving axis is arranged in parallel, and the jackshaft is sequentially connected to power output shaft.
3. double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox as claimed in claim 1 or 2,
It is characterized in that: connecting between the high pressure two position two-way valve and the low pressure two position two-way valve and the 3-position 4-way proportion magnetic valve
It is connected to high-pressure overflow valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811359976.2A CN109281898A (en) | 2018-11-15 | 2018-11-15 | Double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811359976.2A CN109281898A (en) | 2018-11-15 | 2018-11-15 | Double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109281898A true CN109281898A (en) | 2019-01-29 |
Family
ID=65175667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811359976.2A Pending CN109281898A (en) | 2018-11-15 | 2018-11-15 | Double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109281898A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946793A (en) * | 2020-07-20 | 2020-11-17 | 江苏大学 | A machine-hydraulic composite transmission with an energy management mechanism |
| US11499616B2 (en) | 2020-07-20 | 2022-11-15 | Jiangsu University | Hydro-mechanical hybrid transmission device with energy management mechanism |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5011463A (en) * | 1985-03-21 | 1991-04-30 | Friedrich Jarchow | Infinitely variable hydrostatic mechanical power shift gear with group shiftings |
| DE4115623A1 (en) * | 1991-05-14 | 1992-11-26 | Deere & Co | Hydrostatic-mechanical drive for agricultural or goods vehicle - has compact lay out with minimum gap between input and output shafts |
| CN102442286A (en) * | 2011-12-12 | 2012-05-09 | 江苏技术师范学院 | Energy regeneration device of drive-by-wire braking system and control method of braking system |
| CN104442340A (en) * | 2014-12-02 | 2015-03-25 | 吉林大学 | Composite double-planet-row type hydraulically-driven hybrid power system |
| CN104816621A (en) * | 2015-04-27 | 2015-08-05 | 潍柴动力股份有限公司 | Hydraulic hybrid power vehicle and hydraulic hybrid power system thereof |
| CN106414133A (en) * | 2014-02-28 | 2017-02-15 | 意大利德纳股份有限公司 | Dual mode hybrid hydrostatic driveline |
| CN107763198A (en) * | 2017-10-13 | 2018-03-06 | 南京农业大学 | Double planet wheel rows of mixing confluxes the clutch fluid pressure control system of hydraulic mechanical stepless gearbox |
| CN209244979U (en) * | 2018-11-15 | 2019-08-13 | 山东海卓电液控制工程技术研究院 | Double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox |
-
2018
- 2018-11-15 CN CN201811359976.2A patent/CN109281898A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5011463A (en) * | 1985-03-21 | 1991-04-30 | Friedrich Jarchow | Infinitely variable hydrostatic mechanical power shift gear with group shiftings |
| DE4115623A1 (en) * | 1991-05-14 | 1992-11-26 | Deere & Co | Hydrostatic-mechanical drive for agricultural or goods vehicle - has compact lay out with minimum gap between input and output shafts |
| CN102442286A (en) * | 2011-12-12 | 2012-05-09 | 江苏技术师范学院 | Energy regeneration device of drive-by-wire braking system and control method of braking system |
| CN106414133A (en) * | 2014-02-28 | 2017-02-15 | 意大利德纳股份有限公司 | Dual mode hybrid hydrostatic driveline |
| CN104442340A (en) * | 2014-12-02 | 2015-03-25 | 吉林大学 | Composite double-planet-row type hydraulically-driven hybrid power system |
| CN104816621A (en) * | 2015-04-27 | 2015-08-05 | 潍柴动力股份有限公司 | Hydraulic hybrid power vehicle and hydraulic hybrid power system thereof |
| CN107763198A (en) * | 2017-10-13 | 2018-03-06 | 南京农业大学 | Double planet wheel rows of mixing confluxes the clutch fluid pressure control system of hydraulic mechanical stepless gearbox |
| CN209244979U (en) * | 2018-11-15 | 2019-08-13 | 山东海卓电液控制工程技术研究院 | Double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111946793A (en) * | 2020-07-20 | 2020-11-17 | 江苏大学 | A machine-hydraulic composite transmission with an energy management mechanism |
| CN111946793B (en) * | 2020-07-20 | 2021-08-03 | 江苏大学 | A machine-hydraulic composite transmission with an energy management mechanism |
| WO2022016606A1 (en) * | 2020-07-20 | 2022-01-27 | 江苏大学 | Mechanical-hydraulic composite transmission apparatus having energy management mechanism |
| US11499616B2 (en) | 2020-07-20 | 2022-11-15 | Jiangsu University | Hydro-mechanical hybrid transmission device with energy management mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104816621B (en) | Hydraulic hybrid power vehicles and its hydraulic hybrid power system | |
| CN202266536U (en) | Hydraulic control valve and engineering machinery running system | |
| CN101704336B (en) | Energy-saving hydraulic hybrid power system of loader | |
| CN102434647B (en) | Mechanical hydraulic composite continuously variable transmission of engineering vehicle with brake energy recovering function | |
| EP0779953B1 (en) | Vehicle drive system | |
| CN102943859A (en) | Hydraulic mechanical continuously variable transmission for loader | |
| CN102330759A (en) | Hydraulic system and hybrid power vehicle comprising same | |
| CN103790875A (en) | Hydraulic transmission system enabling energy recovery | |
| CN103790876A (en) | Closed type hydraulic transmission system | |
| CN209244979U (en) | Double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox | |
| CN109281898A (en) | Double accumulator brake energy recovering systems based on hydraulic mechanical stepless gearbox | |
| CN101900192B (en) | Power dividing energy regenerated hydraulic mechanical stepless gearbox for hybrid electric vehicle | |
| CN112943752A (en) | Special gearbox hydraulic circuit for hybrid power | |
| CN101342866A (en) | Electric coupling apparatus of hybrid power machine with dual-coupling mode | |
| CN101975270B (en) | Electronic control hydraulic automatic gear shifting system | |
| CN204870526U (en) | Hydraulic hybrid vehicle and hydraulic hybrid system thereof | |
| CN105531508A (en) | Direct drive hydrostatic transmission | |
| CN102913614B (en) | Hydraulic control system of automatic gearshift automobile transmission | |
| CN201461919U (en) | Mechanical and hydraulic drive gear box | |
| CN107859723A (en) | A kind of multi-mode hydraulic machinery stepless speed change device | |
| CN103303140A (en) | Double-H operated power takeoff electrical control system capable of carrying out traveling power take-off and use method of electrical control system | |
| CN106523645A (en) | Transmission system of two-gear automatic transmission of electric automobile | |
| CN102146987B (en) | Power shift speed changing box for matching engineering machine | |
| CN201843988U (en) | Electrical control hydraulic automatic variable-speed system | |
| CN203309051U (en) | Hydraulic mechanical composite transmission mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |