CN104249715A - Bus brake energy recycle hydraulic system - Google Patents
Bus brake energy recycle hydraulic system Download PDFInfo
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- CN104249715A CN104249715A CN201410468247.6A CN201410468247A CN104249715A CN 104249715 A CN104249715 A CN 104249715A CN 201410468247 A CN201410468247 A CN 201410468247A CN 104249715 A CN104249715 A CN 104249715A
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Abstract
The invention discloses a bus brake energy recycle hydraulic system which comprises a hydraulic pump/motor (7) coupled to a gearbox (12) through a connecting device (13). Two oil ports of the hydraulic pump/motor (7) are correspondingly connected with two oil ports of an electro-hydraulic directional control valve (2) through a first electromagnetic directional valve (15) and a second electromagnetic directional valve (4). The first electromagnetic directional valve (15), the second electromagnetic directional valve (4) and the electro-hydraulic directional control valve (2) are connected with a hydraulic energy accumulator (5). By the arrangement, brake energy recycling of a bus during reversing is achieved. In addition, the bus brake energy recycle hydraulic system is simple in structure, reliable in operation and low in cost.
Description
Technical field
The present invention relates to a kind of bus Brake energy recovery regenerated liquid pressing system.
Background technology
The city bus automobile of current operation, because bus station is more, traffic lights are more, parking carrying and the reason such as road is crowded, causes city bus to brake very continually, stops, starts, the operating mode such as acceleration.Common bus is in braking procedure, and its braking energy and potential energy generally change the heat on drg into and scatters and disappears with the form of heat energy and consume, and cause the waste of energy; During starting, driving engine is again devoted oneself to work again under the operating mode of low-speed heave-load, has not only wasted energy but also contaminated environment.
The hybrid power bus of current existence, mainly oil electric mixed dynamic or gas-electricity power combined, energy-storage travelling wave tube mainly super capacitor or the storage battery of its Brake energy recovery, its energy density is less, and price is more expensive.And hydraulic accumulator is compared to super capacitor or storage battery, its energy density is large, and low price, has larger advantage.In city motor bus braking deceleration process, the speed of a motor vehicle is reduced to 0 by V, and in brake energy regeneration system, the kinetic energy in Motor Vehicle Braking Procedure is passed to hydraulic pump/motor through driving system, hydraulic pump/motor is pressed into high pressure accumulator low pressure oil again, thus realizes the recovery of energy.
Hydraulic accumulation energy type Brake energy recovery regeneration system, with its high power density, low cost and obtain paying close attention to more and more widely.Wherein, parallel hydraulic energy regenerating device is in parallel with the former mechanical drive of vehicle, utilizes the energy-storage function of the reversible and hydraulic accumulator of the operating mode of hydraulic pump/motor, reclaims the braking energy of vehicle and is re-used, thus reaching the object of energy-saving and emission-reduction.But, present stage parallel hydraulic energy-regenerating system generally not there is the function of the Brake energy recovery recycling in reversing situation.
Summary of the invention
The object of this invention is to provide a kind of bus Brake energy recovery regenerated liquid pressing system, to solve the problem that existing hydraulic efficiency pressure system can not carry out Brake energy recovery recycling in reversing situation.
In order to realize above object, the technical solution adopted in the present invention is: a kind of bus Brake energy recovery regenerated liquid pressing system, comprise the hydraulic pump/motor (7) for being of coupled connections by connecting device (13) and change speed gear box (12), two hydraulic fluid ports of described hydraulic pump/motor (7) are respectively by the first solenoid directional control valve (15), second solenoid directional control valve (4) is corresponding with two hydraulic fluid ports of electro-hydraulic reversing valve (2) to be connected, described first solenoid directional control valve (15), second solenoid directional control valve (4) is all connected with hydraulic accumulator (5) with electro-hydraulic reversing valve (2).
Described first solenoid directional control valve (15), second solenoid directional control valve (4) is two-bit triplet solenoid directional control valve, electro-hydraulic reversing valve (2) is three-position four-way electromagnetic directional valve, first solenoid directional control valve (15), the P mouth of the second solenoid directional control valve (4) is corresponding with two hydraulic fluid ports of hydraulic pump/motor (7) respectively to be connected, first solenoid directional control valve (15), the A mouth of the second solenoid directional control valve (4) respectively with the A mouth of electro-hydraulic reversing valve (2), B mouth connects, first solenoid directional control valve (15), the B mouth of the second solenoid directional control valve (4) is respectively used to be connected with hydraulic accumulator (5), hydraulic accumulator (5) is for being connected with the P mouth of electro-hydraulic reversing valve (2), and the T mouth of electro-hydraulic reversing valve (2) is used for being connected with fuel tank.
Described hydraulic accumulator (5) and be all connected with check valve between the first solenoid directional control valve (15), the second solenoid directional control valve (4) and electro-hydraulic reversing valve (2).
2/2-way solenoid directional control valve (16) is connected with between described hydraulic accumulator (5) and electro-hydraulic reversing valve (2).
Described hydraulic accumulator (5) is also connected with by pass valve (3).
Described hydraulic pump/motor (7) and the fuel-displaced branch road be connected to for being connected by check valve and fuel tank all other on the oil circuit between the first solenoid directional control valve (15), the second solenoid directional control valve (4).
Two hydraulic fluid ports of described hydraulic pump/motor (7) and the hydraulic fluid port of hydraulic accumulator (5) are all connected with the pressure sensor for being connected with the signal input part of ECU ECU (Electrical Control Unit), the signal output part of described ECU ECU (Electrical Control Unit) is also respectively used to be connected with brake pedal, Das Gaspedal, gear signal end, and the control end of ECU ECU (Electrical Control Unit) is connected with the control end of the first solenoid directional control valve (15), the second solenoid directional control valve (4), electro-hydraulic reversing valve (2) and 2/2-way solenoid directional control valve (16).
Recovery and the utilization of bus Brake energy recovery of the present invention regeneration hydraulic system energy are realized by reversible hydraulic pump/motor and hydraulic accumulator, and hydraulic pump/motor oil pump the most when recuperated energy, when releasing energy as motor.It is realized by valve group and corresponding auxiliary device thereof that energy regenerating is changed to release, two of hydraulic pump/motor hydraulic fluid ports are connected with electromagnetic hydraulic valve and hydraulic accumulator respectively by two solenoid directional control valves, realize the Brake energy recovery in bus reversing situation and recycling.This hydraulic efficiency pressure system is on traditional bus chassis basis, by increasing a set of Brake energy recovery hydraulic efficiency pressure system, realizing the recovery and reuse of bus braking energy and potential energy, reaching the object of energy-saving and emission-reduction, and structure is simple, reliable operation, cost are low.
This Brake energy recovery hydraulic efficiency pressure system controls electromagnetic switch valve events by ECU ECU (Electrical Control Unit), and control accuracy is higher, achieves the Automated condtrol of Brake energy recovery and recycling.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention;
Fig. 2 is Brake energy recovery control flow chart;
Fig. 3 is Brake energy recovery recycling control flow chart.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the present invention is described further.
Be illustrated in figure 1 the structure principle chart of bus Brake energy recovery regenerated liquid pressing system embodiment of the present invention, as seen from the figure, this reclaiming hydraulic efficiency pressure system is coupled with former vehicle mechanical driving system by change speed gear box, namely hydraulic pump/motor 7 is of coupled connections by connecting device 13 and change speed gear box 12, change speed gear box 12 connects city motor bus main reduction gear 14 through output shaft, and the input end of change speed gear box is connected with driving engine by power-transfer clutch.
Two hydraulic fluid ports of hydraulic pump/motor 7 connect respectively by the first solenoid directional control valve 15, second solenoid directional control valve 4 is corresponding with two hydraulic fluid ports of electro-hydraulic reversing valve 2, and the first solenoid directional control valve 15, second solenoid directional control valve 4 is all connected with hydraulic accumulator 5 with electro-hydraulic reversing valve 2.
First solenoid directional control valve 15, second solenoid directional control valve 4 of the present embodiment is two-bit triplet solenoid directional control valve, electro-hydraulic reversing valve 2 is three-position four-way electromagnetic directional valve, the P mouth of the first solenoid directional control valve 15, second solenoid directional control valve 4 is corresponding with two hydraulic fluid ports of hydraulic pump/motor 7 respectively to be connected, the A mouth of the first solenoid directional control valve 15, second solenoid directional control valve 4 is connected with the A mouth of electro-hydraulic reversing valve 2, B mouth respectively, and the B mouth of the first solenoid directional control valve 15, second solenoid directional control valve 4 is respectively used to be connected with hydraulic accumulator 5; Hydraulic accumulator 5 is for being connected with the P mouth of electro-hydraulic reversing valve 2, and the T mouth of electro-hydraulic reversing valve 2 is used for being connected with fuel tank.
In addition, for avoiding fluid adverse current in output procedure, check valve 1-5 being set at hydraulic accumulator 5 and the first solenoid directional control valve 15, between itself and the second solenoid directional control valve 4, being provided with check valve 1-2, between itself and electro-hydraulic reversing valve 2, being provided with check valve 1-1; Meanwhile, also between hydraulic accumulator 5 and electro-hydraulic reversing valve 2,2/2-way solenoid directional control valve 16 is provided with; And the by pass valve 3 be connected with fuel tank is set on hydraulic accumulator 5.
The all other branch road be connected to for being connected by check valve 1-4,1-3 and fuel tank on oil circuit between hydraulic pump/motor 7 with the first solenoid directional control valve 15, second solenoid directional control valve 4, check valve 1-4,1-3 are for ensureing that the fluid of the first solenoid directional control valve 15, second solenoid directional control valve 4 hydraulic fluid port can not flow to fuel tank.
Two hydraulic fluid ports of hydraulic pump/motor 7 and the hydraulic fluid port of hydraulic accumulator 5 are all connected with pressure sensor 6-1,6-2, the 6-3 for being connected with the signal input part of ECU ECU (Electrical Control Unit), the signal output part of ECU ECU (Electrical Control Unit) is also respectively used to be connected with brake pedal 9, Das Gaspedal 10, gear signal end, and the control end of ECU ECU (Electrical Control Unit) is connected with the control end of the first solenoid directional control valve 15, second solenoid directional control valve 4, electro-hydraulic reversing valve 2 and 2/2-way solenoid directional control valve 16.
Bus Brake energy recovery regenerated liquid pressing system principle of work of the present invention and process as follows:
(1) bus D Drive Brake energy recovery: ECU ECU (Electrical Control Unit) receives brake pedal 9, Das Gaspedal 10 and gear signal, according to the Brake energy recovery diagram of circuit shown in Fig. 2, if judge, now vehicle can carry out Brake energy recovery as forward gear, then control the second solenoid directional control valve 4 and work in right position, electro-hydraulic reversing valve 2, first solenoid directional control valve 15 and 2/2-way solenoid directional control valve 16 are all in previous status, the propulsive effort of wheel is through main reduction gear 14, the output shaft of change speed gear box and connecting device 13 drive hydraulic pump/motor 7 Hydraulic Pump mode to work, the high pressure oil that hydraulic pump/motor 7 pumps is exported through B mouth by the P mouth of the second solenoid directional control valve 4, energy storage 5 is flowed into again through hydraulically-controlled one-way valve 1-2, reclaim braking energy, hydraulically-controlled one-way valve 1-2 ensures that hydraulic efficiency pressure system is in energy recovery process, hydraulic pump/motor 7 can not by the high pressure oil reverse drive of energy storage.
(2) bus reverse gear Brake energy recovery: ECU ECU (Electrical Control Unit) receives brake pedal 9, Das Gaspedal 10 and gear signal, according to the Brake energy recovery logical flow chart shown in Fig. 2, if judge it is now reverse gear and can Brake energy recovery be carried out, then control the first solenoid directional control valve 15 and work in left position, electro-hydraulic reversing valve 2, second solenoid directional control valve 4 and 2/2-way solenoid directional control valve 16 are all in previous status, the propulsive effort of wheel is through main reduction gear 14, the output shaft of change speed gear box and connecting device 13 drive hydraulic pump/motor 7 Hydraulic Pump mode to work, the high pressure oil that hydraulic pump/motor 7 pumps is exported through B mouth by the P mouth of the first solenoid directional control valve 15, energy storage 5 is flowed into again through hydraulically-controlled one-way valve 1-5, reclaim braking energy, hydraulically-controlled one-way valve 1-5 ensures that hydraulic efficiency pressure system is in energy recovery process, hydraulic pump/motor 7 can not by the high pressure oil reverse drive of energy storage.
(3) bus D Drive Brake energy recovery recycling: ECU ECU (Electrical Control Unit) receives brake pedal 9, Das Gaspedal 10 and gear signal, according to the Brake energy recovery diagram of circuit shown in Fig. 3, now be forward gear if judge and can Brake energy recovery recycling be carried out, then control 2/2-way solenoid directional control valve 16 to work, electro-hydraulic reversing valve 2 works in left position, first solenoid directional control valve 15 works in right position, and the second solenoid directional control valve 4 works in left position.The P mouth that the high pressure oil of hydraulic accumulator 5 enters electro-hydraulic reversing valve 2 through the oil inlet of 2/2-way solenoid directional control valve 16, oil outlet and check valve 1-1 enters the first solenoid directional control valve 15 through A mouth, hydraulic pump/motor 7 is flowed into through P mouth again by the A mouth of the first solenoid directional control valve 15, high-voltage oil liquid drives hydraulic pump/motor 7 to operate in HM Hydraulic Motor mode, the fluid that hydraulic pump/motor 7 exports flows into the B mouth of electro-hydraulic reversing valve 2 through the P mouth of the second solenoid directional control valve 4 through A mouth, then flow back into fuel tank through its T mouth.The moment that hydraulic pump/motor 7 produces drives wheel that city motor bus is travelled by connecting device 13 through the output shaft of change-speed box, main reduction gear 14, achieves the recycling of braking energy.
(4) bus reverse gear Brake energy recovery recycling: ECU ECU (Electrical Control Unit) receives brake pedal 9, Das Gaspedal 10 and gear signal, according to the Brake energy recovery logical flow chart shown in Fig. 3, if judge it is now reverse gear and can Brake energy recovery recycling be carried out, then control 2/2-way solenoid directional control valve 16 to work, electro-hydraulic reversing valve 2 works in right position, second solenoid directional control valve 4 works in left position, and the first solenoid directional control valve 15 works in right position.The P mouth that the high pressure oil of hydraulic accumulator 5 enters electro-hydraulic reversing valve 2 through the oil inlet of 2/2-way solenoid directional control valve 16, oil outlet and check valve 1-1 enters the second solenoid directional control valve 4 through B mouth, hydraulic pump/motor 7 is flowed into through P mouth again by the A mouth of the second solenoid directional control valve 4, high-voltage oil liquid drives hydraulic pump/motor 7 to operate in HM Hydraulic Motor mode, the fluid that hydraulic pump/motor 7 exports flows into the A mouth of electro-hydraulic reversing valve 2 through the P mouth of the first solenoid directional control valve 15 through A mouth, then flow back into fuel tank through its T mouth.The moment that hydraulic pump/motor 7 produces drives wheel that city motor bus is travelled by connecting device 13 through the output shaft of change-speed box, main reduction gear 14, achieves the recycling of braking energy.
Hydraulic efficiency pressure system of the present invention is using hydraulic accumulator as energy-storage travelling wave tube, by the mode of hydraulic pump/motor and hydraulic accumulator, according to ECU control policy, by obtaining the signals such as brake pedal, Das Gaspedal and gear, by the Brake energy recovery of bus in hydraulic accumulator; According to ECU control policy, during by obtaining the signals such as brake pedal, Das Gaspedal and gear, at the braking energy that bus starting is accelerated or when overtaking other vehicles, release is reclaimed, Power output is carried out with auxiliary engine, realize the recovery and reuse of bus braking energy, reach the object of energy-saving and emission-reduction.
Above embodiment only understands core concept of the present invention for helping; the present invention can not be limited with this; for those skilled in the art; every according to thought of the present invention; the present invention is modified or equivalent replacement; any change done in specific embodiments and applications, all should be included within protection scope of the present invention.
Claims (7)
1. a bus Brake energy recovery regenerated liquid pressing system, comprise the hydraulic pump/motor (7) for being of coupled connections by connecting device (13) and change speed gear box (12), it is characterized in that: two hydraulic fluid ports of described hydraulic pump/motor (7) respectively by the first solenoid directional control valve (15), the second solenoid directional control valve (4) is corresponding with two hydraulic fluid ports of electro-hydraulic reversing valve (2) connects, described first solenoid directional control valve (15), the second solenoid directional control valve (4) are all connected with hydraulic accumulator (5) with electro-hydraulic reversing valve (2).
2. bus Brake energy recovery regenerated liquid pressing system according to claim 1, it is characterized in that: described first solenoid directional control valve (15), second solenoid directional control valve (4) is two-bit triplet solenoid directional control valve, electro-hydraulic reversing valve (2) is three-position four-way electromagnetic directional valve, first solenoid directional control valve (15), the P mouth of the second solenoid directional control valve (4) is corresponding with two hydraulic fluid ports of hydraulic pump/motor (7) respectively to be connected, first solenoid directional control valve (15), the A mouth of the second solenoid directional control valve (4) respectively with the A mouth of electro-hydraulic reversing valve (2), B mouth connects, first solenoid directional control valve (15), the B mouth of the second solenoid directional control valve (4) is respectively used to be connected with hydraulic accumulator (5), hydraulic accumulator (5) is for being connected with the P mouth of electro-hydraulic reversing valve (2), and the T mouth of electro-hydraulic reversing valve (2) is used for being connected with fuel tank.
3. bus Brake energy recovery regenerated liquid pressing system according to claim 1, is characterized in that: described hydraulic accumulator (5) and be all connected with check valve between the first solenoid directional control valve (15), the second solenoid directional control valve (4) and electro-hydraulic reversing valve (2).
4. bus Brake energy recovery regenerated liquid pressing system according to claim 1, is characterized in that: be connected with 2/2-way solenoid directional control valve (16) between described hydraulic accumulator (5) and electro-hydraulic reversing valve (2).
5. bus Brake energy recovery regenerated liquid pressing system according to claim 1, is characterized in that: described hydraulic accumulator (5) is also connected with by pass valve (3).
6. bus Brake energy recovery regenerated liquid pressing system according to claim 1, is characterized in that: described hydraulic pump/motor (7) and the fuel-displaced branch road be connected to for being connected by check valve and fuel tank all other on the oil circuit between the first solenoid directional control valve (15), the second solenoid directional control valve (4).
7. bus Brake energy recovery regenerated liquid pressing system according to claim 4, it is characterized in that: two hydraulic fluid ports of described hydraulic pump/motor (7) and the hydraulic fluid port of hydraulic accumulator (5) are all connected with the pressure sensor for being connected with the signal input part of ECU ECU (Electrical Control Unit), the signal output part of described ECU ECU (Electrical Control Unit) is also respectively used to and brake pedal, Das Gaspedal, gear signal end connects, the control end of ECU ECU (Electrical Control Unit) and the first solenoid directional control valve (15), second solenoid directional control valve (4), the control end of electro-hydraulic reversing valve (2) and 2/2-way solenoid directional control valve (16) connects.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410468247.6A CN104249715B (en) | 2014-09-15 | 2014-09-15 | Bus Brake energy recovery regenerates hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410468247.6A CN104249715B (en) | 2014-09-15 | 2014-09-15 | Bus Brake energy recovery regenerates hydraulic system |
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| CN104249715A true CN104249715A (en) | 2014-12-31 |
| CN104249715B CN104249715B (en) | 2017-12-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105799667A (en) * | 2016-03-18 | 2016-07-27 | 江苏大学 | High-low pressure tank air suspension automobile braking energy recovery and regeneration system and control method |
| CN108973645A (en) * | 2018-07-10 | 2018-12-11 | 许昌学院 | A kind of starting of vehicle enclosed and regenerative brake control system and control method |
| CN108973980A (en) * | 2018-07-10 | 2018-12-11 | 许昌学院 | A kind of parallel-type vehicle hybrid power control system and control method |
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| CN101736771B (en) * | 2010-02-05 | 2011-08-24 | 浙江大学 | Rotary decelerating and braking energy recovery system of hydraulic excavator |
| CN102758813A (en) * | 2012-08-01 | 2012-10-31 | 三一重工股份有限公司 | Energy-recovery hydraulic system and engineering machinery |
| DE102011106715A1 (en) * | 2011-07-06 | 2013-01-10 | Linde Material Handling Gmbh | Hydro-static drive system for use in rotary drive motor of rotary drive of mobile working machine i.e. excavator, has hydraulic accumulator attached to delivery line of pump, where delivery line is guided to directional valve |
| CN204161326U (en) * | 2014-09-15 | 2015-02-18 | 郑州宇通客车股份有限公司 | A kind of bus Brake energy recovery regenerated liquid pressing system |
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2014
- 2014-09-15 CN CN201410468247.6A patent/CN104249715B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20060108860A1 (en) * | 2004-11-23 | 2006-05-25 | Delaware Capital Formation | Brake energy recovery system |
| CN101736771B (en) * | 2010-02-05 | 2011-08-24 | 浙江大学 | Rotary decelerating and braking energy recovery system of hydraulic excavator |
| DE102011106715A1 (en) * | 2011-07-06 | 2013-01-10 | Linde Material Handling Gmbh | Hydro-static drive system for use in rotary drive motor of rotary drive of mobile working machine i.e. excavator, has hydraulic accumulator attached to delivery line of pump, where delivery line is guided to directional valve |
| CN102758813A (en) * | 2012-08-01 | 2012-10-31 | 三一重工股份有限公司 | Energy-recovery hydraulic system and engineering machinery |
| CN204161326U (en) * | 2014-09-15 | 2015-02-18 | 郑州宇通客车股份有限公司 | A kind of bus Brake energy recovery regenerated liquid pressing system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105799667A (en) * | 2016-03-18 | 2016-07-27 | 江苏大学 | High-low pressure tank air suspension automobile braking energy recovery and regeneration system and control method |
| CN108973645A (en) * | 2018-07-10 | 2018-12-11 | 许昌学院 | A kind of starting of vehicle enclosed and regenerative brake control system and control method |
| CN108973980A (en) * | 2018-07-10 | 2018-12-11 | 许昌学院 | A kind of parallel-type vehicle hybrid power control system and control method |
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| CN104249715B (en) | 2017-12-15 |
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