CN104908569B - A kind of vehicle and its hybrid power system - Google Patents
A kind of vehicle and its hybrid power system Download PDFInfo
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- CN104908569B CN104908569B CN201510367692.8A CN201510367692A CN104908569B CN 104908569 B CN104908569 B CN 104908569B CN 201510367692 A CN201510367692 A CN 201510367692A CN 104908569 B CN104908569 B CN 104908569B
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- motor
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- hydraulic pump
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- 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
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- 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
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- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention discloses a kind of vehicle and its hybrid power systems, the hybrid power system includes hydraulic system, further include power transmission, be set between the hydraulic pump/motor of the hydraulic system and the wheel of the vehicle, so that the two can be transmitted directly into action edge.So, when vehicle is from gradually decreasing at a high speed low speed, the gear of gearbox constantly reduces, in shift process, when cutting off the power transmission between gearbox and engine, the traveling kinetic energy of vehicle can also be transferred directly to the hydraulic pump/motor of hydraulic system by the power transmission, and hydraulic system is made still to be able to carry out the recycling of braking energy.In addition, when due to braking, the braking energy of recycling is transferred directly to hydraulic pump/motor by wheel, can avoid the engine of hybrid power system with rotation, avoids the consumption of vehicle kinetic energy in the friction of engine, and then avoid the reduction of recyclable braking energy.
Description
Technical field
The present invention relates to technical field of vehicle, more particularly to a kind of vehicle and its hybrid power system.
Background technology
Currently, the vehicles such as bus are integrated with hydraulic system on its engine, vehicle is made to have the function of hydraulic pressure start and stop：When
Vehicle is in halted state (as waited for traffic lights), engine stop operation, to achieve energy-saving and emission reduction purposes；When vehicle needs
When driving, engine is quickly started and directly drives vehicle traveling.
In addition, also recyclable and using vehicle the braking energy of hydraulic system, reduces complete-vehicle oil consumption.
Referring to FIG. 1, Fig. 1 is a kind of existing structural schematic diagram of the hybrid power system of vehicle.
As shown in Figure 1, the hybrid power system includes engine 1 ' and hydraulic system 2 '.
Hydraulic system 2 ' includes hydraulic pump/motor 21 ', hydraulic oil container 22 ' and accumulator 23 '；Wherein, hydraulic oil container 22 '
For storing low-pressure hydraulic oil；Accumulator 23 ' can store high pressure liquid pressure oil, and the pressure energy generated using hydraulic oil.
It is provided with commutator 24 ' between hydraulic oil container 22 ', accumulator 23 ' and hydraulic pump/motor 21 ', the commutator 24 '
Hydraulic pump/motor is controlled by changing the oil circuit being connected between hydraulic oil container 22 ', accumulator 23 ' and hydraulic pump/motor 21 '
21 ' are worked in a manner of pump or motor.
Wherein, hydraulic pump/motor 21 ' is also mechanically connected by second clutch 5 ' and engine power coupling device 11 ',
Closure by second clutch 5 ' or disconnection, to be switched on or switched off hydraulic pump/motor 21 ' and engine power coupling device
11 ' connection.
When vehicle is in braking state or normally travel state, control second clutch 5 ' is closed, and controls commutator
24 ' make hydraulic pump/motor 21 ' work in the way of pump under the drive for the kinetic energy that engine power coupling device 11 ' transmits,
Hydraulic oil is pumped into accumulator 23 ' from hydraulic oil container 22 ', in the middle generation of accumulator 23 ' and pressure energy is stored.
When vehicle is in starting state or acceleration mode, control commutator 24 ' makes hydraulic pump/motor 21 ' according to motor
Mode work, and control second clutch 5 ' closure, with discharge the pressure energy in accumulator 23 ' and be translated into kinetic energy pass
Engine power coupling device 11 ' is passed, the startup as vehicle or acceleration energy.
Kinetic energy is transferred to gearbox 4 ' by engine power coupling device 11 ' by the closure of control first clutch 3 ',
Final driven wheel.
In the hybrid power system, the power transmission of hydraulic pump/motor 21 ' can only pass through second clutch 5 ' and engine
Dynamic coupling device 11 '；Since the minimum speed of engine 1 ' is restricted, that is, idling is cannot be below, therefore, when vehicle is from height
When speed gradually decreases to low speed, the gear of gearbox 4 ' needs constantly to reduce, and in shift process, first clutch 3 ' needs disconnected
It opens, at this point, the traveling kinetic energy change of vehicle can not be transferred to hydraulic pump/motor 21 ', hydraulic system 2 ' is caused not braked again
The recycling of energy.
In addition, engine 1 ' during the work time exist friction, the system in Brake energy recovery, engine 1 ' also with
Rotation so that part vehicle kinetic energy consumes in the friction of engine 1 ', and recyclable vehicle traveling kinetic energy is caused to reduce.
In view of this, how to improve the hybrid power system of existing vehicle, it still is able to be made when vehicle low speed is run
The recycling of energy, and the reduction of recyclable braking energy is avoided, it is that those skilled in the art need the technology solved to ask at present
Topic.
Invention content
The object of the present invention is to provide a kind of hybrid power system of vehicle, which still is able to when vehicle low speed is run
The recycling of braking energy is carried out, and can avoid the reduction of recyclable braking energy.It is a further object of the present invention to provide a kind of packets
Include the vehicle of above-mentioned hybrid power system.
In order to solve the above technical problems, the present invention provides a kind of hybrid power system of vehicle, including hydraulic system, also wrap
Power transmission is included, is set between the hydraulic pump/motor of the hydraulic system and the wheel of the vehicle, so as to the two
It can directly be transmitted into action edge.
Hybrid power system provided by the invention, power can be in the hydraulic pump/motor of hydraulic system and the wheels of vehicle
Between directly transmit, in this way, when vehicle from low speed is gradually decreased at a high speed, the gear of gearbox constantly reduces, in shift process
In, when cutting off the power transmission between gearbox and engine, the traveling kinetic energy of vehicle can also pass through the power transmission
It is transferred directly to the hydraulic pump/motor of hydraulic system, hydraulic system is made still to be able to carry out the recycling of braking energy.In other words,
There is power interruption during avoiding braking in the setting of this kind of structure, can improve energy recovery efficiency.
In addition, when due to braking, the braking energy of recycling is transferred directly to hydraulic pump/motor by wheel, can avoid mixing
The engine of dynamical system avoids the consumption of vehicle kinetic energy in the friction of engine, and then avoid recyclable with rotation
The reduction of braking energy.
Optionally, further include gearbox, output shaft is connected with gearbox dynamic coupling device；The gearbox dynamic coupling
It attaches together and sets through clutch III and the hydraulic pump/motor be connected by power；The gearbox dynamic coupling device and the clutch
Device III forms the power transmission.
Optionally, further include engine and the engine power coupling device being connect with the output end of the engine, institute
It states engine power coupling device and passes through clutch II and the hydraulic pump/motor be connected by power.
Optionally, the hydraulic pump/motor is shaft type hydraulic pump/motor, and one end of axis passes through the clutch
II connect with the engine power coupling device, and the other end of axis passes through the clutch III and the gearbox dynamic
Coupling device connects.
Optionally, the output shaft of the hydraulic pump/motor is connected with power coupler, and the power coupler passes through described
Clutch II is connect with the engine power coupling device, and couples dress with the gearbox dynamic by the clutch III
Set connection.
Optionally, it further includes hydraulic oil container, accumulator and commutator to state hydraulic system；
The commutator is coupling between the hydraulic oil container and the accumulator and the hydraulic pump/motor, for leading to
Cross change the oil circuit be connected between the hydraulic oil container and the accumulator and the hydraulic pump/motor so that the hydraulic pump/
Motor works in the way of pump or motor.
The present invention also provides a kind of vehicles, including hybrid power system as described in any one of the above embodiments.
Since above-mentioned hybrid power system has above-mentioned technique effect, so the vehicle using the hybrid power system also has
There is corresponding technique effect, is not repeated to discuss herein.
Description of the drawings
Fig. 1 is a kind of existing structural schematic diagram of the hybrid power system of vehicle；
Fig. 2 is a kind of structural schematic diagram of specific implementation mode of the hybrid power system of vehicle provided by the present invention.
In Fig. 1：
Engine 1 ', engine power coupling device 11 '；
Hydraulic system 2 ', hydraulic pump/motor 21 ', hydraulic oil container 22 ', accumulator 23 ', commutator 24 '；
First clutch 3 ', gearbox 4 ', second clutch 5 '；
In Fig. 2：
Engine 10, engine power coupling device 11；
Hydraulic system 20, hydraulic pump/motor 21, hydraulic oil container 22, accumulator 23, commutator 24；
Clutch I 30, gearbox 40, gearbox dynamic coupling device 41, clutch II 50, clutch III 60；
Wheel 70.
Specific implementation mode
Core of the invention is to provide a kind of hybrid power system of vehicle, which still is able to when vehicle low speed is run
The recycling of braking energy is carried out, and can avoid the reduction of recyclable braking energy.Another core of the present invention is to provide a kind of packet
Include the vehicle of above-mentioned hybrid power system.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
Referring to FIG. 2, Fig. 2 is a kind of structure of specific implementation mode of the hybrid power system of vehicle provided by the present invention
Schematic diagram.
In the specific implementation mode, the hybrid power system of the vehicle includes engine 10 and hydraulic system 20.
The output end of engine 10 is connected with engine power coupling device 11, which passes through
Clutch I 30 and 40 be connected by power of gearbox.That is, when clutch I 30 is in the close position, engine power coupling device 11 with
It can be transmitted into action edge between gearbox 40；When clutch I 30 is in open position, engine power coupling device 11 and change
Power between fast case 40, which transmits, to be cut off.
Hydraulic system 20 includes hydraulic pump/motor 21, hydraulic oil container 22 and accumulator 23；Wherein, hydraulic oil container 22 is used for
Store low-pressure hydraulic oil；The pressure energy that accumulator 23 can store high pressure liquid pressure oil and be generated using hydraulic oil.
As shown in Fig. 2, commutator 24 is additionally provided between hydraulic oil container 22 and accumulator 23 and hydraulic pump/motor 21, it should
Commutator 24 can be controlled by changing the oil circuit of the conducting between hydraulic oil container 22 and accumulator 23 and hydraulic pump/motor 21
Hydraulic pump/motor 21 works in the way of pump or in the way of motor.
Concrete configuration at：When hydraulic pump/motor 21 works in the way of pump, torque is absorbed, it will via commutator 24
Hydraulic oil is pumped from hydraulic oil container 22 into accumulator 23, is generated in accumulator 23 and is stored pressure energy；When hydraulic pump/motor 21
When working in the way of motor, the hydraulic oil in accumulator 23 flows through hydraulic pressure under the action of pressure energy via commutator 24
Pump/motor 21 so that hydraulic pump/motor 21 generates kinetic energy, i.e. output torque, and hydraulic oil flows back into hydraulic oil container 22 again later.
As shown in Fig. 2, engine power coupling device 11 is also connect by clutch II 50 with hydraulic pump/motor 21.That is,
It, can be into action edge between engine power coupling device 11 and hydraulic pump/motor 21 when clutch II 50 is in the close position
It transmits；When clutch II 50 is in open position, the power between engine power coupling device 11 and hydraulic pump/motor 21 passes
It passs cut-off.
In addition, in present embodiment, it is additionally provided with power transmission between hydraulic pump/motor 21 and wheel 70, this is dynamic
The setting of force transfering device directly transmit into action edge between hydraulic pump/motor 21 and wheel 70.
That is, even if the be connected by power between cut-out engine power coupling device 11 and gearbox 40, passes through institute
Power transmission is stated, can also be transmitted into action edge between hydraulic pump/motor 21 and wheel 70.In this way, when vehicle from high speed by
Gradually dropping to low speed, the gear of gearbox 40 constantly reduces, in shift process, when clutch I 30 is in open position, vehicle
Traveling kinetic energy the hydraulic pump/motor 21 of hydraulic system 20 can be also transferred directly to by the power transmission, make hydraulic pressure
System 20 still is able to carry out the recycling of braking energy.Stated differently, since can be direct between wheel 70 and hydraulic pump/motor 21
It is transmitted into action edge, to which when the vehicle is braked, vehicle braking energy can be transferred directly to liquid via the power transmission
Pump/motor 21 is pressed, and is stored into accumulator 23, avoids occurring power interruption during braking, improves energy recovery efficiency.
In addition, when due to braking, the braking energy of recycling is transferred directly to hydraulic pump/motor 21 by wheel 70, can be without
Engine power coupling device 11 is crossed, to can avoid engine 10 with rotation, avoids the consumption of vehicle kinetic energy in engine
In 10 friction, and then avoid the reduction of recyclable braking energy.
In specific scheme, as shown in Fig. 2, the power transmission includes the speed change for exporting axis connection with gearbox 40
Case dynamic coupling device 41, certainly, the gearbox dynamic coupling device 41 also with 70 be connected by power of wheel, the gearbox dynamic coupling
It attaches together and sets 41 by clutch III 60 and 21 be connected by power of hydraulic pump/motor.That is, clutch III 60 is in the close position, speed change
It can be transmitted into action edge between case dynamic coupling device 41 and hydraulic pump/motor 21；Clutch III 60 is in open position, becomes
Power between fast case dynamic coupling device 41 and hydraulic pump/motor 21, which transmits, to be cut off.
Specifically, hydraulic pump/motor 21 is shaft type structure, one end of axis by clutch II 50 with start it is motor-driven
Power coupling device 11 connects, and the other end of axis is connect by clutch III 60 with gearbox dynamic coupling device.
Certainly, the hydraulic pump/motor of ordinary construction can also be used in practice, at this time in the output end of hydraulic pump/motor 21
A power coupler is connected, which separates two power transfer paths, and one passes through clutch II 50 and engine
Dynamic coupling device 11 connects, and another is connect by clutch III 60 with gearbox dynamic coupling device 41, equally can be real
Existing direct driving force between hydraulic pump/motor 21 and wheel 70 is transmitted.In contrast, this kind of mode occupied space is larger.
In addition, pump/motor may be used when specific setting, ride comfort is preferably driven to have.
Obviously, in present embodiment, due to can directly be passed into action edge between hydraulic pump/motor 21 and wheel 70
It passs, the alternative of power transfer path increases, and can specifically be combined and be realized by the break-make of aforementioned each clutch, so as to root
Power transfer path appropriate is chosen according to the operating status of vehicle, to make vehicle that there is preferable fuel saving, power performance
With operation ride comfort.
Please refer to following table, the following table shows in the specific implementation mode, by the break-make combination of each clutch, it can be achieved that
Several power transfer paths.
Note：| | indicate that clutch disconnects, √ indicates that clutch is closed.
It should be pointed out that when the state in number 6 in upper table, i.e., power is only between hydraulic system 20 and wheel 70
It transmits, vehicle slows down, and engine 10 either shuts down or is in idling mode, and the kinetic energy of vehicle can be stored all
To accumulator 23, until vehicle speed is zero, during which there is no power interruption, at this point, the organic efficiency of vehicle braking energy is most
It is high.
Other than above-mentioned hybrid power system, the present invention also provides a kind of vehicles with above-mentioned hybrid power system.It should
The other structures of vehicle can refer to prior art design.
Since above-mentioned hybrid power system has above-mentioned technique effect, so the vehicle using the hybrid power system also has
There is corresponding technique effect.
A kind of vehicle provided by the present invention and its hybrid power system are described in detail above.It answers herein
With specific case, principle and implementation of the present invention are described, and the explanation of above example is only intended to help to manage
Solve the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, not departing from
, can be with several improvements and modifications are made to the present invention under the premise of the principle of the invention, these improvement and modification also fall into this hair
In bright scope of the claims.
Claims (4)
1. a kind of hybrid power system of vehicle, including hydraulic system (20), which is characterized in that further include power transmission,
It is set between the hydraulic pump/motor of the hydraulic system (20) (21) and the wheel (70) of the vehicle, so as to the liquid
When pressure pump/motor (21) is worked with motor manner, can directly it be transmitted into action edge between the wheel (70)；
Further include engine (10) and the engine power coupling device (11) being connect with the output end of the engine (10), institute
It states engine power coupling device (11) and passes through clutch II (50) and the hydraulic pump/motor (21) be connected by power；
The hydraulic pump/motor (21) is shaft type hydraulic pump/motor, one end of axis by the clutch II (50) with
Engine power coupling device (11) connection, the other end of axis are connect with the power transmission；
The hydraulic system (20) further includes hydraulic oil container (22), accumulator (23) and commutator (24)；The commutator (24)
It is coupling between the hydraulic oil container (22) and the accumulator (23) and the hydraulic pump/motor (21), changes for passing through
The oil circuit be connected between the hydraulic oil container (22) and the accumulator (23) and the hydraulic pump/motor (21) is so that the liquid
Pressure pump/motor (21) works in the way of pump or motor.
2. hybrid power system according to claim 1, which is characterized in that further include gearbox (40), output shaft connects
It is connected to gearbox dynamic coupling device (41)；The gearbox dynamic coupling device (41) passes through clutch III (60) and the liquid
Press the other end be connected by power of the axis of pump/motor (21)；The gearbox dynamic coupling device (41) and the clutch III
(60) power transmission is formed.
3. hybrid power system according to claim 2, which is characterized in that the output shaft of the hydraulic pump/motor (21)
It is connected with power coupler, the power coupler passes through the clutch II (50) and the engine power coupling device
(11) it connects, and is connect with the gearbox dynamic coupling device (41) by the clutch III (60).
4. a kind of vehicle, which is characterized in that including hybrid power system as described in any one of claims 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510367692.8A CN104908569B (en) | 2015-06-26 | 2015-06-26 | A kind of vehicle and its hybrid power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510367692.8A CN104908569B (en) | 2015-06-26 | 2015-06-26 | A kind of vehicle and its hybrid power system |
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| Publication Number | Publication Date |
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| CN104908569A CN104908569A (en) | 2015-09-16 |
| CN104908569B true CN104908569B (en) | 2018-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510367692.8A Active CN104908569B (en) | 2015-06-26 | 2015-06-26 | A kind of vehicle and its hybrid power system |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018531829A (en) * | 2015-12-14 | 2018-11-01 | ピアーブルグ パンプ テクノロジー ゲゼルシャフト ミット ベシュレンクテル ハフツングＰｉｅｒｂｕｒｇ Ｐｕｍｐ Ｔｅｃｈｎｏｌｏｇｙ ＧｍｂＨ | Hybrid oil pump |
| 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 |
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| FR3001923B1 (en) * | 2013-02-12 | 2015-02-27 | Technoboost | TRACTION CHAIN FOR A HYBRID VEHICLE COMPRISING A THERMAL MOTOR DRIVING A HYDRAULIC PUMP HAVING A LOCKING MEANS |
| CN204870527U (en) * | 2015-06-26 | 2015-12-16 | 潍柴动力股份有限公司 | Vehicle and hybrid power system thereof |
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| US8087733B2 (en) * | 2008-12-09 | 2012-01-03 | Développement Effenco Inc. | Braking energy recovery system for a vehicle and vehicle equipped with the same |
| CN202115325U (en) * | 2011-06-29 | 2012-01-18 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Driving device of power dividing hydraulic hybrid power vehicle |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092269A (en) * | 2011-01-04 | 2011-06-15 | 潍柴动力股份有限公司 | Engine system and traffic tool comprising same |
| FR3001923B1 (en) * | 2013-02-12 | 2015-02-27 | Technoboost | TRACTION CHAIN FOR A HYBRID VEHICLE COMPRISING A THERMAL MOTOR DRIVING A HYDRAULIC PUMP HAVING A LOCKING MEANS |
| CN203237023U (en) * | 2013-04-18 | 2013-10-16 | 高旭 | Hydraulic hybrid power system of container truck |
| CN203854499U (en) * | 2014-05-14 | 2014-10-01 | 潍柴动力股份有限公司 | Hybrid power system |
| CN204870527U (en) * | 2015-06-26 | 2015-12-16 | 潍柴动力股份有限公司 | Vehicle and hybrid power system thereof |
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| CN104908569A (en) | 2015-09-16 |
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