CN104908569A - Vehicle and hybrid power system - Google Patents
Vehicle and hybrid power system Download PDFInfo
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- CN104908569A CN104908569A CN201510367692.8A CN201510367692A CN104908569A CN 104908569 A CN104908569 A CN 104908569A CN 201510367692 A CN201510367692 A CN 201510367692A CN 104908569 A CN104908569 A CN 104908569A
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- power
- motor
- hydraulic pump
- coupling device
- vehicle
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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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Abstract
The invention discloses a vehicle and a hybrid power system. The hybrid power system comprises a hydraulic system and further a power transmission device. The power transmission device is arranged between a hydraulic pump or a motor of a hydraulic system and a vehicle wheel, so power can be directly transmitted therebetween; therefore, when the whole vehicle slows down from high speed to low speed, gears of the gearbox are kept reduced; during gear switching, when power transmission between the gearbox between the gearbox and the engine is cut off, advancing kinetic energy of the whole vehicle can be directly transmitted to the hydraulic pump/motor of the hydraulic system via the power transmission device, so the hydraulic system can still recover brake energy; and during brake, recovered energy can be directly transmitted to the hydraulic pump/motor via the wheel, so the engine of the hybrid power system can be prevented from rotating and friction of the whole vehicle kinetic energy on the engine can be avoided and recoverable energy decrease can be reduced.
Description
Technical field
The present invention relates to technical field of vehicle, particularly relate to a kind of vehicle and hybrid power system thereof.
Background technology
At present, the vehicles such as bus are integrated with hydraulic efficiency pressure system on its driving engine, make vehicle have hydraulic pressure start and stop function: when vehicle is in halted state (as waited for traffic lights), engine stop runs, to reach the object of energy-saving and emission-reduction; When vehicle needs to travel, driving engine is started fast and Direct driver vehicle travels.
In addition, hydraulic efficiency pressure system is the recyclable braking energy with utilizing vehicle also, reduces complete-vehicle oil consumption.
Please refer to Fig. 1, Fig. 1 is the structural representation of the hybrid power system of existing a kind of vehicle.
As shown in Figure 1, this hybrid power system comprises driving engine 1 ' and hydraulic efficiency pressure system 2 '.
Hydraulic efficiency pressure system 2 ' comprises hydraulic pump/motor 21 ', hydraulic reservoir 22 ' and energy storage 23 '; Wherein, hydraulic reservoir 22 ' is for storing low-pressure hydraulic oil; Energy storage 23 ' can store high pressure liquid force feed, and the pressure energy utilizing hydraulic oil to produce.
Hydraulic reservoir 22 ', between energy storage 23 ' and hydraulic pump/motor 21 ', be provided with commutator 24 ', this commutator 24 ' by changing hydraulic reservoir 22 ', the oil circuit that is communicated with between energy storage 23 ' with hydraulic pump/motor 21 ' carrys out hydraulic control pump/motor 21 ' and works in the mode of pump or motor.
Wherein, hydraulic pump/motor 21 ' is also mechanically connected by second clutch 5 ' and engine power coupling device 11 ', by the closed of second clutch 5 ' or disconnection, to be switched on or switched off the connection of hydraulic pump/motor 21 ' and engine power coupling device 11 '.
When vehicle is in braking state or normal motoring condition, control second clutch 5 ' to close, and work according to the mode of pump under controlling the drive of the kinetic energy that commutator 24 ' makes hydraulic pump/motor 21 ' transmit at engine power coupling device 11 ', so that hydraulic oil is pumped into energy storage 23 ' from hydraulic reservoir 22 ', store pressure energy in the middle generation of energy storage 23 '.
When vehicle is in starting state or acceleration mode, controlling commutator 24 ' makes hydraulic pump/motor 21 ' work according to the mode of motor, and it is closed to control second clutch 5 ', be translated into kinetic energy pass to engine power coupling device 11 ', as startup or the acceleration energy of vehicle with the pressure energy discharged in energy storage 23 '.
Kinetic energy, by controlling the closed of first clutch 3 ', is passed to change speed gear box 4 ', final driven wheel by engine power coupling device 11 '.
In this hybrid power system, the transmission of power of hydraulic pump/motor 21 ' can only by second clutch 5 ' and engine power coupling device 11 '; Because the minimum speed of driving engine 1 ' is restricted, namely can not lower than idling, therefore, when car load is from when dropping to low speed gradually at a high speed, the gear of change speed gear box 4 ' needs constantly to reduce, in shift process, first clutch 3 ' needs to disconnect, now, the kinetic energy of advancing of car load becomes and cannot be passed to hydraulic pump/motor 21 ', causes hydraulic efficiency pressure system 2 ' cannot carry out the recovery of braking energy again.
In addition, there is friction in driving engine 1 ' in the course of the work, this system when Brake energy recovery, driving engine 1 ' also along with rotation, make part car load kinetic energy consume in the friction of driving engine 1 ', cause callable car load advance kinetic energy reduce.
In view of this, how improving the hybrid power system of existing vehicle, still can carry out the recovery of braking energy, and avoid the reduction of recyclable braking energy when vehicle low cruise, is the current technical issues that need to address of those skilled in the art.
Summary of the invention
The object of this invention is to provide a kind of hybrid power system of vehicle, this system still can carry out the recovery of braking energy when vehicle low cruise, and can avoid the reduction of recyclable braking energy.Another object of the present invention is to provide a kind of vehicle comprising above-mentioned hybrid power system.
For solving the problems of the technologies described above, the invention provides a kind of hybrid power system of vehicle, comprise hydraulic efficiency pressure system, also comprise torque transfer, it is arranged between the hydraulic pump/motor of described hydraulic efficiency pressure system and the wheel of described vehicle, so that both directly can carry out transmission of power.
Hybrid power system provided by the invention, power directly can transmit between the hydraulic pump/motor of hydraulic efficiency pressure system and the wheel of vehicle, so, when car load is from dropping to low speed gradually at a high speed, the gear of change speed gear box constantly reduces, in shift process, when cutting off the transmission of power between change speed gear box and driving engine, the kinetic energy of advancing of car load is also directly passed to the hydraulic pump/motor of hydraulic efficiency pressure system by described torque transfer, make hydraulic efficiency pressure system still can carry out the recovery of braking energy.In other words, there is power interruption during the setting of this kind of structure avoids braking, can energy recovery efficiency be improved.
In addition, during due to braking, the braking energy of recovery is directly passed to hydraulic pump/motor by wheel, and the driving engine of hybrid power system can be avoided along with rotation, avoid car load kinetic energy to consume in the friction of driving engine, and then avoid the reduction of recyclable braking energy.
Alternatively, also comprise change speed gear box, its output shaft is connected with gearbox dynamic coupling device; Described gearbox dynamic coupling device is connected with described hydraulic pump/motor power by power-transfer clutch III; Described gearbox dynamic coupling device and described power-transfer clutch III form described torque transfer.
Alternatively, the engine power coupling device also comprising driving engine and be connected with the mouth of described driving engine, described engine power coupling device is connected with described hydraulic pump/motor power by power-transfer clutch II.
Alternatively, described hydraulic pump/motor is shaft type hydraulic pump/motor, and one end of its axis is connected with described engine power coupling device by described power-transfer clutch II, and the other end of its axis is connected with described gearbox dynamic coupling device by described power-transfer clutch III.
Alternatively, the output shaft of described hydraulic pump/motor is connected with power coupler, and described power coupler is connected with described engine power coupling device by described power-transfer clutch II, and is connected with described gearbox dynamic coupling device by described power-transfer clutch III.
Alternatively, state hydraulic efficiency pressure system and also comprise hydraulic reservoir, energy storage and commutator;
Described commutator is coupling in described hydraulic reservoir and between described energy storage and described hydraulic pump/motor, works for the oil circuit by changing described hydraulic reservoir and conducting between described energy storage and described hydraulic pump/motor to make described hydraulic pump/motor according to the mode of pump or motor.
The present invention also provides a kind of vehicle, comprises the hybrid power system as described in above-mentioned any one.
Because above-mentioned hybrid power system has above-mentioned technique effect, so the vehicle applying this hybrid power system also has corresponding technique effect, no longer repeat to discuss herein.
Accompanying drawing explanation
Fig. 1 is the structural representation of the hybrid power system of existing a kind of vehicle;
Fig. 2 is the structural representation of a kind of detailed description of the invention of the hybrid power system of vehicle provided by the present invention.
In Fig. 1:
Driving engine 1 ', engine power coupling device 11 ';
Hydraulic efficiency pressure system 2 ', hydraulic pump/motor 21 ', hydraulic reservoir 22 ', energy storage 23 ', commutator 24 ';
First clutch 3 ', change speed gear box 4 ', second clutch 5 ';
In Fig. 2:
Driving engine 10, engine power coupling device 11;
Hydraulic efficiency pressure system 20, hydraulic pump/motor 21, hydraulic reservoir 22, energy storage 23, commutator 24;
Power-transfer clutch I 30, change speed gear box 40, gearbox dynamic coupling device 41, power-transfer clutch II 50, power-transfer clutch III 60;
Wheel 70.
Detailed description of the invention
Core of the present invention is to provide a kind of hybrid power system of vehicle, and this system still can carry out the recovery of braking energy when vehicle low cruise, and can avoid the reduction of recyclable braking energy.Another core of the present invention is to provide a kind of vehicle comprising above-mentioned hybrid power system.
In order to make those skilled in the art person understand the present invention program 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 a kind of detailed description of the invention of the hybrid power system of vehicle provided by the present invention.
In this detailed description of the invention, the hybrid power system of described vehicle comprises driving engine 10 and hydraulic efficiency pressure system 20.
The mouth of driving engine 10 is connected with engine power coupling device 11, and this engine power coupling device 11 is connected with change speed gear box 40 power by power-transfer clutch I 30.That is, when power-transfer clutch I 30 is in the close position, between engine power coupling device 11 and change speed gear box 40, transmission of power can be carried out; When power-transfer clutch I 30 is in open position, the transmission of power between engine power coupling device 11 and change speed gear box 40 is cut off.
Hydraulic efficiency pressure system 20 comprises hydraulic pump/motor 21, hydraulic reservoir 22 and energy storage 23; Wherein, hydraulic reservoir 22 is for storing low-pressure hydraulic oil; The pressure energy that energy storage 23 can store high pressure liquid force feed and utilize hydraulic oil to produce.
As shown in Figure 2, hydraulic reservoir 22 and be also provided with commutator 24 between energy storage 23 and hydraulic pump/motor 21, this commutator 24 can carry out the mode of hydraulic control pump/motor 21 according to pump by the oil circuit changing hydraulic reservoir 22 and the conducting between energy storage 23 and hydraulic pump/motor 21 or the mode according to motor works.
Concrete configuration become: when hydraulic pump/motor 21 works according to the mode of pump, absorb moment of torsion, via commutator 24 by hydraulic oil from hydraulic reservoir 22 pump to energy storage 23, produce in energy storage 23 and store pressure energy; When hydraulic pump/motor 21 works according to the mode of motor, hydraulic oil in energy storage 23 flows through hydraulic pump/motor 21 via commutator 24 under the effect of pressure energy, make hydraulic pump/motor 21 produce kinetic energy, i.e. output torque, hydraulic oil flows back into hydraulic reservoir 22 more afterwards.
As shown in Figure 2, engine power coupling device 11 is also connected with hydraulic pump/motor 21 by power-transfer clutch II 50.That is, when power-transfer clutch II 50 is in the close position, between engine power coupling device 11 and hydraulic pump/motor 21, transmission of power can be carried out; When power-transfer clutch II 50 is in open position, the transmission of power between engine power coupling device 11 and hydraulic pump/motor 21 is cut off.
In addition, in present embodiment, be also provided with torque transfer between hydraulic pump/motor 21 and wheel 70, being arranged so that of this torque transfer directly can carry out transmission of power between hydraulic pump/motor 21 and wheel 70.
That is, be connected with the power between change speed gear box 40 even if cut off engine power coupling device 11, by described torque transfer, between hydraulic pump/motor 21 and wheel 70, also can carry out transmission of power.So, when car load is from dropping to low speed gradually at a high speed, the gear of change speed gear box 40 constantly reduces, in shift process, when power-transfer clutch I 30 is in open position, the kinetic energy of advancing of car load is also directly passed to the hydraulic pump/motor 21 of hydraulic efficiency pressure system 20 by described torque transfer, make hydraulic efficiency pressure system 20 still can carry out the recovery of braking energy.In other words, due to directly transmission of power can be carried out between wheel 70 and hydraulic pump/motor 21, thus when car brakeing, car load braking energy can directly be passed to hydraulic pump/motor 21 via described torque transfer, and be stored in energy storage 23, there is power interruption during avoiding braking, improve energy recovery efficiency.
In addition, during due to braking, the braking energy reclaimed directly is passed to hydraulic pump/motor 21 by wheel 70, can without engine power coupling device 11, thus driving engine 10 can be avoided along with rotation, avoid car load kinetic energy to consume in the friction of driving engine 10, and then avoid the reduction of recyclable braking energy.
In concrete scheme, as shown in Figure 2, described torque transfer comprises the gearbox dynamic coupling device 41 be connected with change speed gear box 40 output shaft, certainly, this gearbox dynamic coupling device 41 is also connected with wheel 70 power, and this gearbox dynamic coupling device 41 is connected with hydraulic pump/motor 21 power by power-transfer clutch III 60.That is, power-transfer clutch III 60 is in the close position, can carry out transmission of power between gearbox dynamic coupling device 41 and hydraulic pump/motor 21; Power-transfer clutch III 60 is in open position, and the transmission of power between gearbox dynamic coupling device 41 and hydraulic pump/motor 21 is cut off.
Particularly, hydraulic pump/motor 21 is shaft type structure, and one end of its axis is connected with engine power coupling device 11 by power-transfer clutch II 50, and the other end of its axis is connected with gearbox dynamic coupling device by power-transfer clutch III 60.
Certainly, also the hydraulic pump/motor of ordinary construction can be adopted in reality, now connect a power coupler at the mouth of hydraulic pump/motor 21, this power coupler separates two power transfer path, article one, be connected with engine power coupling device 11 by power-transfer clutch II 50, another is connected with gearbox dynamic coupling device 41 by power-transfer clutch III 60, can realize the direct driving force transmission between hydraulic pump/motor 21 and wheel 70 equally.In contrast, this kind of mode takes up room larger.
In addition, can pump/motor be adopted when specifically arranging, better drive ride comfort to have.
Obviously, in this detailed description of the invention, due to directly transmission of power can be carried out between hydraulic pump/motor 21 and wheel 70, the alternative of power transfer path increases, break-make combination specifically by aforementioned each power-transfer clutch realizes, thus suitable power transfer path can be chosen according to the running state of vehicle, to making vehicle, there is preferably fuel saving, tractive performance and operation ride comfort.
Please refer to following table, under indicate in this detailed description of the invention, combined by the break-make of each power-transfer clutch, attainable several power transfer path.
Note: || represent that power-transfer clutch disconnects, √ represents that power-transfer clutch closes.
It is to be noted, when being in the state of numbering 6 in upper table, namely power only transmits between hydraulic efficiency pressure system 20 and wheel 70, and car load slows down, driving engine 10 or shut down, or be in idling mode, the kinetic energy of car load can all be stored in energy storage 23, until the car load speed of a motor vehicle is zero, period does not have power interruption, now, the organic efficiency of car load braking energy is the highest.
Except above-mentioned hybrid power system, the present invention also provides a kind of vehicle with above-mentioned hybrid power system.Other structures of this vehicle can refer to prior art design.
Because above-mentioned hybrid power system has above-mentioned technique effect, so the vehicle applying this hybrid power system also has corresponding technique effect.
Above a kind of vehicle provided by the present invention and hybrid power system thereof are all 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 (7)
1. the hybrid power system of a vehicle, comprise hydraulic efficiency pressure system (20), it is characterized in that, also comprise torque transfer, it is arranged between the hydraulic pump/motor (21) of described hydraulic efficiency pressure system (20) and the wheel (70) of described vehicle, so that both directly can carry out transmission of power.
2. hybrid power system according to claim 1, is characterized in that, also comprises change speed gear box (40), and its output shaft is connected with gearbox dynamic coupling device (41); Described gearbox dynamic coupling device (41) is connected with described hydraulic pump/motor (21) power by power-transfer clutch III (60); Described gearbox dynamic coupling device (41) and described power-transfer clutch III (60) form described torque transfer.
3. hybrid power system according to claim 2, it is characterized in that, the engine power coupling device (11) also comprising driving engine (10) and be connected with the mouth of described driving engine (10), described engine power coupling device (11) is connected with described hydraulic pump/motor (21) power by power-transfer clutch II (50).
4. hybrid power system according to claim 3, it is characterized in that, described hydraulic pump/motor (21) is shaft type hydraulic pump/motor, one end of its axis is connected with described engine power coupling device (11) by described power-transfer clutch II (50), and the other end of its axis is connected with described gearbox dynamic coupling device (41) by described power-transfer clutch III (60).
5. hybrid power system according to claim 3, it is characterized in that, the output shaft of described hydraulic pump/motor (21) is connected with power coupler, described power coupler is connected with described engine power coupling device (11) by described power-transfer clutch II (50), and is connected with described gearbox dynamic coupling device (41) by described power-transfer clutch III (60).
6. the hybrid power system according to any one of claim 1-5, is characterized in that, described hydraulic efficiency pressure system (20) also comprises hydraulic reservoir (22), energy storage (23) and commutator (24);
Described commutator (24) is coupling in described hydraulic reservoir (22) and between described energy storage (23) and described hydraulic pump/motor (21), works for the oil circuit by changing described hydraulic reservoir (22) and conducting between described energy storage (23) and described hydraulic pump/motor (21) to make described hydraulic pump/motor (21) according to the mode of pump or motor.
7. a vehicle, is characterized in that, comprises the hybrid power system as described in any one of claim 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510367692.8A CN104908569B (en) | 2015-06-26 | 2015-06-26 | A kind of vehicle and its hybrid power system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510367692.8A CN104908569B (en) | 2015-06-26 | 2015-06-26 | A kind of vehicle and its hybrid power system |
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| CN104908569A true CN104908569A (en) | 2015-09-16 |
| CN104908569B CN104908569B (en) | 2018-08-31 |
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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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107923516A (en) * | 2015-12-14 | 2018-04-17 | 皮尔伯格泵技术有限责任公司 | Hybrid power oil pump |
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| US20100141024A1 (en) * | 2008-12-09 | 2010-06-10 | Developpement Effenco Inc. | Braking energy recovery system for a vehicle and vehicle equipped with same |
| 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 |
| 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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| CN203854499U (en) * | 2014-05-14 | 2014-10-01 | 潍柴动力股份有限公司 | Hybrid power system |
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| 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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2015
- 2015-06-26 CN CN201510367692.8A patent/CN104908569B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100141024A1 (en) * | 2008-12-09 | 2010-06-10 | Developpement Effenco Inc. | Braking energy recovery system for a vehicle and vehicle equipped with same |
| 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 |
| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107923516A (en) * | 2015-12-14 | 2018-04-17 | 皮尔伯格泵技术有限责任公司 | Hybrid power 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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| Publication number | Publication date |
|---|---|
| CN104908569B (en) | 2018-08-31 |
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