CN104816621A - Hydraulic hybrid power vehicle and hydraulic hybrid power system thereof - Google Patents
Hydraulic hybrid power vehicle and hydraulic hybrid power system thereof Download PDFInfo
- Publication number
- CN104816621A CN104816621A CN201510206395.5A CN201510206395A CN104816621A CN 104816621 A CN104816621 A CN 104816621A CN 201510206395 A CN201510206395 A CN 201510206395A CN 104816621 A CN104816621 A CN 104816621A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- hydraulic pump
- hybrid power
- motor
- communicated
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units
- B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
- B60K6/12—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention discloses a hydraulic hybrid power vehicle and a hydraulic hybrid power system thereof. The output shaft of an engine in the hydraulic hybrid power system is directly connected with an input shaft of a first transmission gear set, the first output shaft of the first transmission gear set is connected/disconnected with a first input end of a second transmission gear set through a clutch; a second output shaft of the first transmission gear set is connected with a driving shaft of a hydraulic pump, a hydraulic oil outlet of the hydraulic pump is connected/disconnected with a hydraulic pump/a motor through a direction control valve, and an output shaft of the hydraulic pump/the motor is connected with a second input shaft of the second transmission gear set; an output shaft of the second transmission gear set is connected with a drive axle of the hydraulic hybrid power vehicle; an outlet main oil path of the hydraulic pump is connected/disconnected with an oil inlet and an oil outlet of the hydraulic pump/the motor; an operating oil way of a high pressure energy accumulator is connected/disconnected with a main oil way through a switch valve so that hydraulic oil in the main oil path flows into the high pressure energy accumulator or the hydraulic oil in the high pressure energy accumulator flows into the main oil way. The power system is higher in reliability and higher in energy recovery ratio.
Description
Technical field
The present invention relates to vehicle hydraulic control technology field, particularly hydraulic hybrid power vehicles and hydraulic hybrid power system thereof.
Background technology
Hydraulic hybrid power vehicles is a kind of vehicle driven by hydraulic pressure, mechanical reasonable disposition, has been widely used at present in daily life, the construction machinery and equipment formula vehicles such as such as hydraulic hybrid drive-type loader, bulldozer.
Please refer to Fig. 1, Fig. 1 is the structural representation of the hydraulic hybrid power system of a kind of hydraulic hybrid power vehicles in prior art.
In prior art, hydraulic hybrid power system comprises hydraulic variable displacement pump 1 ', check valve 2 ', central controller 3 ', 2/2-way change-over valve 4 ', high-pressure hydraulic accumulator 5 ', drg 7 ', planetary gear train 8 ', change-speed box 9 ', driving engine 10 ', power-transfer clutch 11 ', low-pressure hydraulic energy storage 12 ', hydraulic pump/motor 14 ', drive axle 15 ', transmission shaft 16 ' composition.
Driving engine 10 ' successively with power-transfer clutch 11 ', change-speed box 9 ' connects, the input shaft of planetary gear train 8 ' is connected with the output shaft of change-speed box 9 ', first output shaft 17 ' of planetary gear train 8 ' is connected with transmission shaft 16 ' one end, the other end of transmission shaft 16 ' is connected with the input end of drive axle 15 ', second output shaft 13 ' of planetary gear train 8 ' is connected with hydraulic pump/motor 14 ', 3rd output shaft 6 ' of planetary gear train 8 ' is connected with hydraulic variable displacement pump 1 ', the oil-feed port of hydraulic pump/motor 14 ' and the oil-feed port of 2/2-way change-over valve 4 ', the fuel-displaced port of check valve 2 ' is communicated with, the oil outlet of 2/2-way change-over valve 4 ' is communicated with the hydraulic fluid port of high-pressure hydraulic accumulator 5 ', the oil-feed port of check valve 2 ' is communicated with the fuel-displaced port of hydraulic variable displacement pump 1 ', the fuel-displaced port of hydraulic pump/motor 14 ', the oil-feed port of hydraulic variable displacement pump 1 ' is communicated with the oil circuit port of low-pressure hydraulic energy storage 12 ', the control input end of 2/2-way change-over valve 4 ' is connected with the first control output end of central controller 3 '.
When vehicle launch or low cruise operating mode, the work of central controller controls hydraulic pump/motor and motor operating conditions, control 2/2-way change-over valve simultaneously and open, and high-pressure hydraulic accumulator provides high pressure fuel source for hydraulic pump/motor, and now driving engine is in stopped status; When the pressure in high-pressure hydraulic accumulator is close to minimum operating pressure, driving engine 1 ' starts, and hydraulic pump/motor does not work.
When car speed exceedes critical speed, adopt hydraulic pressure and mechanically combining type of drive, driving engine and hydraulic pump/motor drive vehicle to travel jointly.Central controller controls power-transfer clutch combines, and the mechanical energy of driving engine drives vehicle by power-transfer clutch, transmission shaft, drive axle; Central controller controls 2/2-way change-over valve is opened, and the energy drives hydraulic pump/motor of hydraulic accumulator, star train of gears, transmission shaft, drive axle drive vehicle, realize combination drive.
When car brakeing operating mode, central controller starts control signal to hydraulic pump/motor, makes hydraulic pump/motor work in pump condition, opens 2/2-way change-over valve, to high pressure accumulator feedback energy simultaneously.
As can be seen from the above description, when not having pressure in high pressure accumulator, during low speed, pure hydraulic pressure starting function cannot realize, and have a strong impact on the normal operation of vehicle.Further, system only can reclaim the mechanical energy of wheel rotator inertia.
In addition, the braking energy reclaimed in system only can be applied to vehicle low speed pure hydraulic pressure starting function, and when the braking energy reclaimed reaches the highest amount of high pressure accumulator, unnecessary energy cannot be applied to the equipment of construction machinery and equipment.
Therefore, how to improve hydraulic hybrid power system in prior art, this system has higher reliability, and energy recovery rate is higher, is those skilled in that art's technical matterss urgently to be resolved hurrily.
Summary of the invention
Object of the present invention is for providing a kind of hydraulic hybrid power vehicles and hydraulic hybrid power system thereof, and this power system has higher reliability, and energy recovery rate is higher.
For solving the problems of the technologies described above, the invention provides a kind of hydraulic hybrid power system, comprise driving engine, hydraulic pump/motor, Hydraulic Pump, high pressure accumulator, between described Hydraulic Pump and described hydraulic pump/motor, be provided with directional control valve, also comprise auxiliary gear box and power coupling mechanism
The output shaft of described driving engine directly connects the input shaft of described auxiliary gear box, and the first output shaft of described auxiliary gear box is connected by power-transfer clutch/disconnected the first input shaft of described power coupling mechanism;
The axle drive shaft of the second output shaft connecting fluid press pump of described auxiliary gear box, the hydraulic oil outlet of described Hydraulic Pump is communicated with/disconnects described hydraulic pump/motor by described directional control valve, and the output shaft of described hydraulic pump/motor connects the second input shaft of described power coupling mechanism;
The output shaft of described power coupling mechanism connects the drive axle of hydraulic hybrid power vehicles;
Described hydraulic pressure delivery side of pump working connection all by directional control valve can be communicated with oil outlet with the oil inlet of described hydraulic pump/motor/disconnect;
The actuator port of described high pressure accumulator can be communicated with/disconnect described working connection by switch valve, so that the hydraulic oil that the hydraulic oil in working connection flows in high pressure accumulator or high pressure accumulator flows into working connection.
Preferably, also comprise multiway valve group, described working connection is communicated with/disconnects the steering cylinder of described hydraulic hybrid power vehicles or/and operating cylinder by described multiway valve group;
When described motor vehicle driven by mixed power is in braking mode, the outlet of described hydraulic pump/motor is communicated with the steering cylinder of described hydraulic hybrid power vehicles or/and the working oil chamber of operating cylinder, to realize Vehicular turn or work operations through described working connection by described multiway valve group;
Described steering cylinder is used for wheel steering; Described operating cylinder is for driving the equipment action of described hydraulic hybrid power vehicles.
Preferably, described hydraulic pressure delivery side of pump is communicated with described steering cylinder or/and the working oil chamber of described operating cylinder through described working connection by described multiway valve group, to realize Vehicular turn or work operations.
Preferably, described steering cylinder is or/and the working oil chamber of operating cylinder is communicated with further by described multiway valve group/disconnects the actuator port of described high pressure accumulator;
When described steering cylinder or/and the working oil chamber oil return of operating cylinder time, described steering cylinder is or/and the working oil chamber of operating cylinder is communicated with the actuator port of described high pressure accumulator.
Preferably, the pipeline being communicated with the actuator port of described working connection and described high pressure accumulator comprises the first pipeline and the second pipeline, and switch valve comprises the first switch valve and second switch valve; Described first switch valve is located at described first pipeline, and described second switch is located at described second pipeline;
Hydraulic oil flows out respectively by described first pipeline and described second pipeline and flows into the inside of described high pressure accumulator.
Preferably, described first pipeline and described second pipeline are respectively arranged with the first check valve and the second check valve.
Preferably, also comprise change speed gear box, described change speed gear box is located between described power-transfer clutch and described power coupling mechanism.
Preferably, described Hydraulic Pump is volume adjustable hydraulic pump, and described hydraulic pump/motor is variable delivery hydraulic pump/motor.
Preferably, described directional control valve is three position four-way directional control valve, when described three position four-way directional control valve is positioned at the first control position, described high pressure accumulator, described Hydraulic Pump are communicated with by the oil inlet of described three position four-way directional control valve with described hydraulic pump/motor, and the oil outlet of described hydraulic pump/motor is communicated with oil return circuit by described three position four-way directional control valve; When described three position four-way directional control valve is positioned at the second control position, the oil inlet of described hydraulic pump/motor is communicated with described oil return circuit, and described oil outlet is communicated with described high pressure accumulator by described three position four-way directional control valve; When described three position four-way directional control valve is in meta, the oil outlet of described hydraulic pump/motor is communicated with oil inlet.
In hydraulic hybrid power system in the present invention, driving engine can pass through auxiliary gear box, power-transfer clutch, power coupling mechanism by transmission of power in drive axle, drives cartwheel, completes advance or the retrogressing of car load; Power also first can be converted into hydraulic energy by auxiliary gear box, Hydraulic Pump, power coupling mechanism by driving engine, Hydraulic Pump drives hydraulic pump/motor to rotate by working connection, hydraulic energy is converted to mechanical energy and is transmitted to drive axle by hydraulic pump/motor again, drive cartwheel, complete advance or the retrogressing of car load; Certainly, the power of driving engine also can be transmitted to wheel through above two approach simultaneously.
When braking the wheel in motion, cut-off clutch, the motion energy of wheel is delivered to hydraulic pump/motor by power coupling mechanism, and now hydraulic pump/motor works in the mode of pump, can play brake action to complete machine; Be communicated with the outlet working connection of hydraulic pump/motor simultaneously, can enter high pressure accumulator through working connection, namely hydraulic oil is pumped in high pressure accumulator from low pressure oil return circuit by hydraulic pump/motor, is got up by stored energy.
This power system is when detecting that at the vehicle launch initial stage energy in high pressure accumulator can not meet driving hydraulic pump/motor, and driving engine can drive Hydraulic Pump to hydraulic pump/motor fuel feeding, increases the reliability of system works.
Certainly, the hydraulic pressure conducting oil circuit in power system can increase check valve, change-over valve, etc. parts increase the reliability of system, concrete set-up mode does not describe in detail herein.
In a kind of concrete embodiment, working connection is communicated with/disconnects the steering cylinder of described hydraulic hybrid power vehicles or/and operating cylinder by described multiway valve group; When described motor vehicle driven by mixed power is in braking mode, described working connection is communicated with the steering cylinder of described hydraulic hybrid power vehicles or/and the working oil chamber of operating cylinder by described multiway valve group;
Described steering cylinder is used for wheel steering; Described operating cylinder is for driving the equipment action of described hydraulic hybrid power vehicles, and for loader, the equipment of loader is scraper bowl, and operating cylinder is the promotion oil cylinder be connected with scraper bowl.
The energy reclaimed during car brakeing in present embodiment can be directly used in and control steering cylinder or operating cylinder, to realize turning to or the action of equipment of vehicle, storing recycling without the need to being recycled to energy storage, making the utilization ratio of braking recuperated energy higher like this.Further, braking recuperated energy not only can be stored in high pressure accumulator, is used for driving vehicle to travel, but also can controls equipment action or turn to, make utilizing of recuperated energy wider.
In addition, Hydraulic Pump in above-mentioned power system can be used for as operating cylinder and steering cylinder fuel feeding to a certain extent, needed for the work meeting operating cylinder and steering cylinder, original independently steering pump and working-machine pump in prior art can be cancelled, reduce vehicle use cost.
On the basis of above-mentioned hydraulic hybrid power system, present invention also offers a kind of hydraulic hybrid power vehicles, comprise wheel and control the hydraulic hybrid power system of described wheel, described hydraulic hybrid power system is the hydraulic hybrid power system described in above-mentioned any one.
Because the hydraulic hybrid power vehicles in the present invention has above-mentioned hydraulic hybrid power system, therefore this hydraulic hybrid power vehicles also has the above-mentioned technique effect of hydraulic hybrid power system.
Accompanying drawing explanation
Fig. 1 is the structural representation of the hydraulic hybrid power system of a kind of hydraulic hybrid power vehicles in prior art;
Fig. 2 is the structural representation of hydraulic hybrid power system in a kind of specific embodiment of the present invention.
Wherein, the one-to-one relationship in Fig. 1 between Reference numeral and component names is as follows:
Hydraulic variable displacement pump 1 ', check valve 2 ', central controller 3 ', 2/2-way change-over valve 4 ', high-pressure hydraulic accumulator 5 ', drg 7 ', planetary gear train 8 ', change-speed box 9 ', driving engine 10 ', power-transfer clutch 11 ', low-pressure hydraulic energy storage 12 ', hydraulic pump/motor 14 ', drive axle 15 ', transmission shaft 16 ', the first output shaft 17 '.
Wherein, the one-to-one relationship in Fig. 2 between component names and Reference numeral is as follows:
Driving engine 1, multiway valve group 2, auxiliary gear box 3, Hydraulic Pump 4, check valve 5, first switch valve 6, first check valve 7, second check valve 24, power assembly controller 8, high pressure accumulator 9, by pass valve 10, hydraulic pump/motor 11, steering cylinder 12, power-transfer clutch 13, change speed gear box 14, low-pressure reservoir 15, power coupling mechanism 16, drive axle 17, three position four-way directional control valve 18, main shaft 20, working connection 21, operating cylinder 22, second switch valve 23.
Detailed description of the invention
Core of the present invention is for providing a kind of hydraulic hybrid power vehicles and hydraulic hybrid power system thereof, and this power system has higher reliability, and energy recovery rate is higher.
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 2, Fig. 2 is the structural representation of hydraulic hybrid power system in a kind of specific embodiment of the present invention.
The invention provides a kind of hydraulic hybrid power system, comprise driving engine 1, hydraulic pump/motor 11, Hydraulic Pump 4, high pressure accumulator 9, hydraulic pump/motor 11 is a kind of according to use needs, both can make pump to use, the power that machinery rotates is transformed into the pressure of hydraulic pressure, also can use as motor, hydraulic energy is transformed into the power that machinery rotates.
Also be provided with directional control valve between Hydraulic Pump 4 in the present invention and hydraulic pump/motor 11, directional control valve can according to use needs, the flow direction of hydraulic oil between hydraulic control pump 4, hydraulic pressure/motor.The present invention also comprises auxiliary gear box 3 and power coupling mechanism 16, and the output shaft of driving engine 1 directly connects the input shaft of auxiliary gear box 3, and the first output shaft of auxiliary gear box 3 is connected by power-transfer clutch 13/disconnected the first input shaft of power coupling mechanism 16; The axle drive shaft of the second output shaft connecting fluid press pump 4 of auxiliary gear box 3, the hydraulic oil outlet of Hydraulic Pump 4 is communicated with/disconnects hydraulic pump/motor 11 by directional control valve, and the output shaft of hydraulic pump/motor 11 connects the second input shaft of power coupling mechanism 16; The output shaft of power coupling mechanism 16 connects the drive axle 17 of hydraulic hybrid power vehicles, and drive axle 17 drives main shaft 20 action.
In the present invention, the outlet working connection 21 of Hydraulic Pump 4 all by directional control valve can be communicated with oil outlet with the oil inlet of hydraulic pump/motor 11/disconnect; The actuator port of high pressure accumulator 9 can be communicated with/disconnect working connection 21 by switch valve.
Give a kind of concrete directional control valve in fig. 2, this directional control valve is three position four-way directional control valve 18, when three position four-way directional control valve 18 is positioned at the first control position, working connection 21 is communicated with by the oil inlet of three position four-way directional control valve 18 with hydraulic pump/motor 11, and the oil outlet of hydraulic pump/motor 11 is communicated with oil return circuit by three position four-way directional control valve 18; When three position four-way directional control valve 18 is positioned at the second control position, the oil inlet of hydraulic pump/motor 11 is communicated with oil return circuit, and oil outlet is communicated with working connection 21 by three position four-way directional control valve 18; When three position four-way directional control valve 18 is in meta, the oil outlet of hydraulic pump/motor 11 is communicated with oil inlet.
In hydraulic hybrid power system in the present invention, driving engine 1 can pass through auxiliary gear box 3, power-transfer clutch 13, power coupling mechanism 16 by transmission of power in drive axle 17, drives cartwheel, completes advance or the retrogressing of car load; Power also first can be converted into hydraulic energy by auxiliary gear box 3, Hydraulic Pump 4 power coupling mechanism 16 by driving engine 1, Hydraulic Pump 4 by working connection by stored energy in high pressure accumulator, high pressure accumulator supplies Hydraulic Pump/motor action by working connection again, hydraulic energy is converted to mechanical energy and is transmitted to drive axle 17, drive cartwheel, complete advance or the retrogressing of car load; Certainly, the power of driving engine 1 also can be transmitted to wheel through above two approach simultaneously.
When braking the wheel in motion, cut-off clutch 13, the motion energy of wheel is delivered to hydraulic pump/motor 11 by power coupling mechanism 16, and now hydraulic pump/motor 11 works in the mode of pump, can play brake action to complete machine; Hydraulic oil is pumped in high pressure accumulator 9 from low pressure oil return circuit by hydraulic pump/motor 11 simultaneously, is got up by stored energy.
On the other hand, driving engine 1, under the effect of rotator inertia, still can drive Hydraulic Pump 4 to rotate, thus hydraulic oil pump can be delivered in high pressure accumulator 9 by Hydraulic Pump 4, this portion of energy is stored, further increases energy recovery rate.
This power system is when detecting that at the vehicle launch initial stage energy in high pressure accumulator 9 can not meet driving hydraulic pump/motor 11, and driving engine 1 can drive Hydraulic Pump 4 to hydraulic pump/motor 11 fuel feeding, increases the reliability of system works.
Certainly, the hydraulic pressure conducting oil circuit in power system can increase check valve, change-over valve, etc. parts increase the reliability of system, concrete set-up mode does not describe in detail herein.
In a kind of concrete embodiment, working connection 21 is communicated with/disconnects the steering cylinder 12 of hydraulic hybrid power vehicles or/and operating cylinder 22 by multiway valve group 2; When motor vehicle driven by mixed power is in braking mode, working connection 21 is communicated with the steering cylinder 12 of hydraulic hybrid power vehicles or/and the working oil chamber of operating cylinder 22 by multiway valve group 2;
Steering cylinder 12 is for wheel steering; Operating cylinder 22 is for driving the equipment action of hydraulic hybrid power vehicles, and for loader, the equipment of loader is scraper bowl, and operating cylinder 22 is the promotion oil cylinder be connected with scraper bowl.
The energy reclaimed during car brakeing in present embodiment can be directly used in and control steering cylinder 12 or operating cylinder 22, to realize turning to or the action of equipment of vehicle, storing recycling without the need to being recycled to energy storage, making the utilization ratio of braking recuperated energy higher like this.Further, braking recuperated energy not only can be stored in high pressure accumulator 9, is used for driving vehicle to travel, but also can controls equipment action or turn to, make utilizing of recuperated energy wider.
In addition, Hydraulic Pump 4 in above-mentioned power system can be used for as operating cylinder 22 and steering cylinder 12 fuel feeding to a certain extent, needed for the work meeting operating cylinder 22 and steering cylinder 12, original independently steering pump and working-machine pump in prior art can be cancelled, reduce vehicle use cost.
In a kind of detailed description of the invention, steering cylinder 12 is or/and the working oil chamber of operating cylinder 22 can be communicated with/disconnect further by multiway valve group 2 actuator port of high pressure accumulator 9; When steering cylinder 12 or/and the working oil chamber oil return of operating cylinder 22 time, steering cylinder 12 is or/and the working oil chamber of operating cylinder 22 is communicated with the actuator port of high pressure accumulator 9.
Like this, steering cylinder 12 or/and operating cylinder 22 working oil chamber in hydraulic oil can flow into high pressure accumulator 9, that is, on the basis of the energy that the high pressure accumulator 9 in this power system is braked at recyclable vehicle driving, can also reclaim turn to braking energy, equipment service braking energy, Brake energy recovery face is wider.
Be communicated with working connection 21 and comprise the first pipeline and the second pipeline with the pipeline of the actuator port of high pressure accumulator 9, switch valve comprises the first switch valve 6 and second switch valve 23; First switch valve 6 is located at the first pipeline, and second switch is located at the second pipeline.
Hydraulic oil flows out respectively by the first pipeline and the second pipeline and flows into the inside of high pressure accumulator 9; Like this, hydraulic oil flows into respectively by different passages and flows out high pressure accumulator 9, can improve the reliability of system works.
In addition, can be provided with on-off valve on the first pipeline and the second pipeline, on-off valve is defined as the first check valve 7 and the second check valve 24, hydraulic pump outlet working connection is arranged check valve 5, ensures the unidirectional unlatching of hydraulic oil.
Hydraulic hybrid power system in the various embodiments described above can also comprise change speed gear box 14, and change speed gear box 14 is located between power-transfer clutch 13 and power coupling mechanism 16.
Hydraulic Pump 4 in the various embodiments described above can be volume adjustable hydraulic pump 4, and hydraulic pump/motor 11 is variable delivery hydraulic pump/motor 11.
Auxiliary gear box 3 in the various embodiments described above and power coupling mechanism 16 can be Multi-stage transmission gear cluster, arrange according to concrete environment for use.
In addition, the working connection 21 in the various embodiments described above can also be provided with by pass valve 10, and working connection 21 is communicated with low-pressure reservoir 15 by by pass valve 10, further ensures the reliability of system works.
In the various embodiments described above, the structure of multiway valve group 2 can by various ways, as long as can realize above-mentioned technique effect.
The control of each component actuation can be controlled by power assembly controller 8 above.
On the basis of above-mentioned hydraulic hybrid power system, present invention also offers a kind of hydraulic hybrid power vehicles, comprise wheel and control the hydraulic hybrid power system of wheel, hydraulic hybrid power system is the hydraulic hybrid power system of above-mentioned any one.
Other part informations of hydraulic hybrid power vehicles please refer to prior art, do not repeat at this.
Because the hydraulic hybrid power vehicles in the present invention has above-mentioned hydraulic hybrid power system, therefore this hydraulic hybrid power vehicles also has the above-mentioned technique effect of hydraulic hybrid power system.
Above a kind of hydraulic hybrid power vehicles provided by the present invention and hydraulic hybrid power system thereof are described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (9)
1. a hydraulic hybrid power system, comprise driving engine (1), hydraulic pump/motor (11), Hydraulic Pump (4), high pressure accumulator (9), it is characterized in that, directional control valve is provided with between described Hydraulic Pump and described hydraulic pump/motor, also comprise auxiliary gear box (3) and power coupling mechanism (16)
The output shaft of described driving engine (1) directly connects the input shaft of described auxiliary gear box (3), and the first output shaft of described auxiliary gear box (3) is connected by power-transfer clutch (13)/disconnected the first input shaft of described power coupling mechanism (16);
The axle drive shaft of the second output shaft connecting fluid press pump of described auxiliary gear box (3), the hydraulic oil outlet of described Hydraulic Pump is communicated with/disconnects described hydraulic pump/motor by described directional control valve, and the output shaft of described hydraulic pump/motor connects the second input shaft of described power coupling mechanism (16);
The output shaft of described power coupling mechanism (16) connects the drive axle (17) of hydraulic hybrid power vehicles;
Described hydraulic pressure delivery side of pump working connection (21) all by directional control valve can be communicated with oil outlet with the oil inlet of described hydraulic pump/motor/disconnect;
The actuator port of described high pressure accumulator (9) can be communicated with/disconnect described working connection (21) by switch valve,, so that the hydraulic oil that the hydraulic oil in working connection (21) flows in described high pressure accumulator (9) or described high pressure accumulator (9) flows into described working connection (21).
2. hydraulic hybrid power system as claimed in claim 1, it is characterized in that, also comprise multiway valve group (2), described working connection (21) is communicated with/disconnects the steering cylinder (12) of described hydraulic hybrid power vehicles or/and operating cylinder (22) by described multiway valve group (2);
When described motor vehicle driven by mixed power is in braking mode, the outlet of described hydraulic pump/motor is communicated with described steering cylinder (12) or/and the working oil chamber of described operating cylinder (22), to realize Vehicular turn or work operations through described working connection (21) by described multiway valve group (2);
Described steering cylinder (12) is for wheel steering; Described operating cylinder (22) is for driving the equipment action of described hydraulic hybrid power vehicles.
3. hydraulic hybrid power system as claimed in claim 2, it is characterized in that, described hydraulic pressure delivery side of pump is communicated with described steering cylinder (12) or/and the working oil chamber of described operating cylinder (22), to realize Vehicular turn or work operations through described working connection by described multiway valve group (2).
4. hydraulic hybrid power system as claimed in claim 2, it is characterized in that, described steering cylinder (12) is or/and the working oil chamber of described operating cylinder (22) is communicated with further by described multiway valve group (2)/disconnects the actuator port of described high pressure accumulator (9);
When described steering cylinder (12) or/and the working oil chamber oil return of described operating cylinder (22) time, described steering cylinder (12) is or/and the working oil chamber of operating cylinder (22) is communicated with the actuator port of described high pressure accumulator (9).
5. the hydraulic hybrid power system as described in any one of Claims 1-4, it is characterized in that, be communicated with described working connection (21) and comprise the first pipeline being provided with on-off valve and the second pipeline being provided with on-off valve with the pipeline of the actuator port of described high pressure accumulator (9), switch valve comprises the first switch valve (6) and second switch valve (23); Described first switch valve (6) is located at described first pipeline, and described second switch valve (23) is located at described second pipeline;
Hydraulic oil flows out respectively by described first pipeline and described second pipeline and flows into the inside of described high pressure accumulator (9).
6. hydraulic hybrid power system as claimed in claim 1, it is characterized in that, also comprise change speed gear box (14), described change speed gear box (14) is located between described power-transfer clutch (13) and described power coupling mechanism (16).
7. hydraulic hybrid power system as claimed in claim 1, it is characterized in that, described Hydraulic Pump is volume adjustable hydraulic pump, and described hydraulic pump/motor is variable delivery hydraulic pump/motor.
8. the hydraulic hybrid power system as described in any one of claim 1 to 7, it is characterized in that, described directional control valve is three position four-way directional control valve (18), when described three position four-way directional control valve (18) is positioned at the first control position, described high pressure accumulator (9), described Hydraulic Pump are communicated with the oil inlet of described hydraulic pump/motor by described three position four-way directional control valve (18), and the oil outlet of described hydraulic pump/motor is communicated with oil return circuit by described three position four-way directional control valve (18); When described three position four-way directional control valve (18) is positioned at the second control position, the oil inlet of described hydraulic pump/motor is communicated with described oil return circuit, and described oil outlet is communicated with described high pressure accumulator (9) by described three position four-way directional control valve (18); When described three position four-way directional control valve (18) is in meta, the oil outlet of described hydraulic pump/motor is communicated with oil inlet.
9. a hydraulic hybrid power vehicles, comprises wheel and controls the hydraulic hybrid power system of described wheel, it is characterized in that, described hydraulic hybrid power system is the hydraulic hybrid power system described in any one of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206395.5A CN104816621B (en) | 2015-04-27 | 2015-04-27 | Hydraulic hybrid power vehicles and its hydraulic hybrid power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510206395.5A CN104816621B (en) | 2015-04-27 | 2015-04-27 | Hydraulic hybrid power vehicles and its hydraulic hybrid power system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104816621A true CN104816621A (en) | 2015-08-05 |
| CN104816621B CN104816621B (en) | 2017-07-28 |
Family
ID=53727199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510206395.5A Active CN104816621B (en) | 2015-04-27 | 2015-04-27 | Hydraulic hybrid power vehicles and its hydraulic hybrid power system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104816621B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105480218A (en) * | 2016-01-31 | 2016-04-13 | 张学栋 | Wear-free hydraulic braking method, device and vehicle |
| CN106240361A (en) * | 2016-10-04 | 2016-12-21 | 长沙悠力传动有限公司 | A kind of vehicle using manual impulsator regulation speed and control method |
| CN106891711A (en) * | 2017-03-16 | 2017-06-27 | 吉林大学 | Load series-parallel machine hydraulic hybrid control system and control method |
| CN109281898A (en) * | 2018-11-15 | 2019-01-29 | 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 |
| CN105691198B (en) * | 2016-01-07 | 2019-03-08 | 潍柴动力股份有限公司 | A kind of vehicle energy-saving system |
| CN110001379A (en) * | 2019-04-24 | 2019-07-12 | 吉林大学 | A kind of multiaxis drive system of hybrid power vehicle |
| CN110001390A (en) * | 2019-04-24 | 2019-07-12 | 山东临工工程机械有限公司 | A kind of transmission system and control method |
| CN110015282A (en) * | 2019-05-22 | 2019-07-16 | 安徽柳工起重机有限公司 | Vehicle hydraulic retarder |
| CN111516478A (en) * | 2020-03-23 | 2020-08-11 | 潍柴动力股份有限公司 | Transmission system of vehicle and vehicle |
| CN112937531A (en) * | 2021-03-30 | 2021-06-11 | 柳工柳州传动件有限公司 | Service braking system and method for engineering machinery |
| CN112982542A (en) * | 2021-02-21 | 2021-06-18 | 泉州鑫豪工程机械科技有限公司 | Large-tonnage wheel type excavator transmission structure |
| CN113879097A (en) * | 2021-09-15 | 2022-01-04 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111806216A (en) * | 2020-07-18 | 2020-10-23 | 太原理工大学 | A loader traveling hydrostatic and mechanical hybrid drive system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201506246U (en) * | 2009-09-25 | 2010-06-16 | 徐工集团工程机械有限公司 | Hybrid hydraulic hybrid vehicle |
| US20120173104A1 (en) * | 2008-11-21 | 2012-07-05 | Yisheng Zhang | Apparatus and method for operating a hybrid drive system during an extended braking condition |
| CN102795092A (en) * | 2012-08-02 | 2012-11-28 | 徐工集团工程机械股份有限公司 | Power distribution hydraulic hybrid power drive device and vehicle |
| US20140004998A1 (en) * | 2012-06-29 | 2014-01-02 | Eaton Corporation | Hydraulic launch assist trickle charge transformer |
| CN103568810A (en) * | 2013-11-19 | 2014-02-12 | 中国第一汽车股份有限公司 | Energy recyclable auxiliary hub motor hydraulic driving system and control method thereof |
| CN204870526U (en) * | 2015-04-27 | 2015-12-16 | 潍柴动力股份有限公司 | Hydraulic hybrid vehicle and hydraulic hybrid system thereof |
-
2015
- 2015-04-27 CN CN201510206395.5A patent/CN104816621B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120173104A1 (en) * | 2008-11-21 | 2012-07-05 | Yisheng Zhang | Apparatus and method for operating a hybrid drive system during an extended braking condition |
| CN201506246U (en) * | 2009-09-25 | 2010-06-16 | 徐工集团工程机械有限公司 | Hybrid hydraulic hybrid vehicle |
| US20140004998A1 (en) * | 2012-06-29 | 2014-01-02 | Eaton Corporation | Hydraulic launch assist trickle charge transformer |
| CN102795092A (en) * | 2012-08-02 | 2012-11-28 | 徐工集团工程机械股份有限公司 | Power distribution hydraulic hybrid power drive device and vehicle |
| CN103568810A (en) * | 2013-11-19 | 2014-02-12 | 中国第一汽车股份有限公司 | Energy recyclable auxiliary hub motor hydraulic driving system and control method thereof |
| CN204870526U (en) * | 2015-04-27 | 2015-12-16 | 潍柴动力股份有限公司 | Hydraulic hybrid vehicle and hydraulic hybrid system thereof |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105691198B (en) * | 2016-01-07 | 2019-03-08 | 潍柴动力股份有限公司 | A kind of vehicle energy-saving system |
| CN105480218B (en) * | 2016-01-31 | 2019-04-05 | 张学栋 | It is a kind of without abrasion hydraulic braking method, apparatus and vehicle |
| CN105480218A (en) * | 2016-01-31 | 2016-04-13 | 张学栋 | Wear-free hydraulic braking method, device and vehicle |
| CN106240361A (en) * | 2016-10-04 | 2016-12-21 | 长沙悠力传动有限公司 | A kind of vehicle using manual impulsator regulation speed and control method |
| CN106891711B (en) * | 2017-03-16 | 2024-01-05 | 吉林大学 | Series-parallel hydraulic hybrid power control system and control method for loader |
| CN106891711A (en) * | 2017-03-16 | 2017-06-27 | 吉林大学 | Load series-parallel machine hydraulic hybrid control system and control method |
| CN109281898A (en) * | 2018-11-15 | 2019-01-29 | 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 |
| CN110001379A (en) * | 2019-04-24 | 2019-07-12 | 吉林大学 | A kind of multiaxis drive system of hybrid power vehicle |
| CN110001390A (en) * | 2019-04-24 | 2019-07-12 | 山东临工工程机械有限公司 | A kind of transmission system and control method |
| CN110001390B (en) * | 2019-04-24 | 2024-02-02 | 山东临工工程机械有限公司 | Transmission system and control method |
| CN110015282A (en) * | 2019-05-22 | 2019-07-16 | 安徽柳工起重机有限公司 | Vehicle hydraulic retarder |
| CN110015282B (en) * | 2019-05-22 | 2023-09-15 | 安徽柳工起重机有限公司 | Hydraulic retarder for vehicle |
| CN111516478A (en) * | 2020-03-23 | 2020-08-11 | 潍柴动力股份有限公司 | Transmission system of vehicle and vehicle |
| CN112982542A (en) * | 2021-02-21 | 2021-06-18 | 泉州鑫豪工程机械科技有限公司 | Large-tonnage wheel type excavator transmission structure |
| CN112937531B (en) * | 2021-03-30 | 2023-01-03 | 柳工柳州传动件有限公司 | Service braking system and method for engineering machinery |
| CN112937531A (en) * | 2021-03-30 | 2021-06-11 | 柳工柳州传动件有限公司 | Service braking system and method for engineering machinery |
| CN113879097A (en) * | 2021-09-15 | 2022-01-04 | 浙江大学 | Multi-mode electro-hydraulic hybrid power system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104816621B (en) | 2017-07-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104816621A (en) | Hydraulic hybrid power vehicle and hydraulic hybrid power system thereof | |
| US8327637B2 (en) | Hydraulic energy recovery system with dual-powered auxiliary hydraulics | |
| CN204870526U (en) | Hydraulic hybrid vehicle and hydraulic hybrid system thereof | |
| CN101398017B (en) | Hydraulic drive system with energy recuperation | |
| CN106133332B (en) | The traveling being integrated into hydraulic hybrid system and operation function | |
| CN104246086B (en) | The hydraulic hybrid gyroscopic drive system of excavator | |
| KR101752980B1 (en) | Driving apparatus for rear wheel of environment-friendly vehicle | |
| CN103790875B (en) | A kind of Hydraulic Power Transmission System allowing energy regenerating | |
| EP3247582B1 (en) | Hydro-mechanical transmission with multiple modes of operation and method of operating the same | |
| CN115769006A (en) | Hydraulic system and method for operating a hydraulic system | |
| CN103101427A (en) | Hydrostatic hydraulic hybrid system | |
| CN202378697U (en) | Travel hydraulic control system and self-propelled engineering machinery applying such control system | |
| US20160114668A1 (en) | Hydrostatic-parallel hydraulic hybrid architectures | |
| CN1706680A (en) | Driving system for a mobile machine, in particular ground transfer machine | |
| CN103790876A (en) | Closed type hydraulic transmission system | |
| US20180195595A1 (en) | Power split and variable creep drive system for street sweeper or like specialty vehicle | |
| CN105008749A (en) | A method for operating a hydraulic disc coupling in an awd vehicle and a coupling therefore | |
| CN203717498U (en) | Hydraulic transmission system capable of allowing energy recovery | |
| CN103661340B (en) | Vehicle braking system and vehicle | |
| DE102012112381A1 (en) | Drive axle for vehicle, has hydraulic engine, which operates as pump in braking operation of vehicle for conveying pressure medium in pressure medium accumulator and as motor during acceleration process of vehicle | |
| CN102729809A (en) | Hydraulic driving system, base plate and mechanical traveling device | |
| CN103085657B (en) | The open type hydraulic system that can brake and braking method, walking machine | |
| US11821442B2 (en) | Hydraulic energy handling system, a hydraulic parallel hybrid driveline and a working machine | |
| CN219115419U (en) | Hydraulic auxiliary braking system for engineering machinery and engineering machinery | |
| CN204077343U (en) | A kind of heavy-duty vehicle hydraulic hybrid power device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |