CN201320956Y - Four-wheel fully-driven hydraulic hybrid power transmission device of bus - Google Patents

Four-wheel fully-driven hydraulic hybrid power transmission device of bus Download PDF

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Publication number
CN201320956Y
CN201320956Y CNU2008202329193U CN200820232919U CN201320956Y CN 201320956 Y CN201320956 Y CN 201320956Y CN U2008202329193 U CNU2008202329193 U CN U2008202329193U CN 200820232919 U CN200820232919 U CN 200820232919U CN 201320956 Y CN201320956 Y CN 201320956Y
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CN
China
Prior art keywords
hydraulic
valve
bus
energy
electro
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Expired - Fee Related
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CNU2008202329193U
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Chinese (zh)
Inventor
臧发业
戴汝泉
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Shandong Jiaotong University
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Shandong Jiaotong University
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Priority to CNU2008202329193U priority Critical patent/CN201320956Y/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles

Abstract

The utility model discloses a four-wheel fully-driven hydraulic hybrid power transmission device of a bus, which is composed of a constant-pressure variable pump, one or more hydraulic energy storage assemblies, secondary elements, a variable oil cylinder, an electro-hydraulic proportional valve, a pressure-reducing valve and the like. The transmission device is characterized in that: the constant-pressure variable pump is connected with an engine by a clutch, the four secondary elements are respectively connected with four wheels of the bus by the clutch, the electro-hydraulic proportional valve is integrated with the variable oil cylinder into one, and the electro-hydraulic proportional valve and the variable oil cylinder are respectively arranged on the secondary elements; each hydraulic energy storage assembly is composed of a hydraulic energy storage device, an energy storage control valve and a stop valve; and the constant-pressure variable pump, the secondary elements, the hydraulic energy storage assemblies and the like are installed on a bus chassis. The utilization of energy stored by the transmission device can be controlled according to the needs of vehicle running conditions, so as to reduce unnecessary waste, improve the energy recycling efficiency; moreover, the independent turning and driving of a vehicle can be realized with good flexibility.

Description

The bus four-wheel drives the hydraulic hybrid driving device entirely
Technical field
The utility model relates to a kind of bus hydraulic hybrid driving device, belongs to mechanical field.
Background technology
The power drive system of bus generally is made of driving engine, change speed gear box, transmission shaft, drive axle etc., because bus rises, brakes frequently, its energy consumption and exhaust emission are bigger.Be energy savings, reduce discharging, people have designed and developed the bus of multiple hybrid power transmission system, such as electricity mixed power driving system, hydraulic hybrid driving system and an electric hydraulic pressure, an electric flywheel energy storage hybrid power transmission system etc.According to the difference of each engine installation array mode in the system, the hybrid power system of automobile can be divided into tandem and parallel.In tandem hydraulic hybrid driving system, Engine driven Hydraulic Pump, hydraulic motor/pump (secondary component) be as the driver element powered vehicle, the hydraulic accumulator stored energy.When vehicle operating, driving engine drives hydraulic pump works, and the output high pressure oil is given the secondary component that is under " HM Hydraulic Motor " operating mode, the powered vehicle operation; When car brakeing, because the effect of inertia kinetic energy drives the secondary component that is under " Hydraulic Pump " operating mode, reclaim the braking kinetic energy of vehicle, be stored in the hydraulic accumulator, in vehicle launch, acceleration and operational process, be used.In the existing tandem hydraulic hybrid driving system, the common direct connection of hydraulic accumulator is not controlled its break-make during work in hydraulic efficiency pressure system.Like this, when energy utilizes again, the hydraulic accumulator energy stored just may be disposable all or the overwhelming majority discharge, and the bus change working is frequent, take advantage of the charge material amount constantly to change, when the passenger after a little while, vehicle launch, the required drive that quickens, travels are just little, the energy that consumes is just few, otherwise the energy that consumes is just many; In addition, the running velocity of vehicle also constantly changes, when situation that the road magnitude of traffic flow greatly or is relatively stopped up, vehicle launch, acceleration and running velocity are just very slow, this moment, required drive was little, the energy that consumes is also few, if but energy stored release in the hydraulic accumulator is not controlled, some energy of storage will waste.
Summary of the invention
In order to overcome the deficiency of existing bus hybrid power transmission system, the purpose of this utility model provides a kind of bus four-wheel and drives the hydraulic hybrid driving device entirely, both can be used as hydraulic pump works by adopting, can be used as HM Hydraulic Motor work again, can realize the hydraulic motor/pump (secondary component) that hydraulic pressure energy and mechanical energy are changed mutually, and the hydraulic energy-accumulating assembly of energy modulated pressure energy storage energy storage and release reclaims and stores the braking kinetic energy of bus, start at bus, quicken, be used in the driving process, reach energy-conservation and purpose environmental protection.
The technical scheme in the invention for solving the technical problem is: a kind of bus four-wheel drives the hydraulic hybrid driving device entirely and is made up of constant pressure variable displacement pump, one or more hydraulic energy-accumulating assembly, secondary component, variable oil cylinder, electro-hydraulic proportional valve, reducing valve etc.; Constant pressure variable displacement pump connects with driving engine by power-transfer clutch, and four secondary components connect with four wheels of bus respectively by power-transfer clutch, and electro-hydraulic proportional valve and variable oil cylinder are made of one and are installed in respectively on the secondary component; The hydraulic energy-accumulating assembly is made up of hydraulic accumulator, accumulation of energy control cock, shutoff valve, the oil inlet and outlet of hydraulic accumulator is connected with an end hydraulic fluid port of shutoff valve, the other end hydraulic fluid port of shutoff valve is connected with the oil outlet of accumulation of energy control cock, and the oil inlet of accumulation of energy control cock is connected on system's main line; The oil inlet of reducing valve also is connected on system's main line, and the oil outlet of reducing valve is connected with the oil inlet of electro-hydraulic proportional valve; Constant pressure variable displacement pump, secondary component and hydraulic energy-accumulating assembly etc. are installed on the bus chassis.
The utility model compared with prior art, the beneficial effect that is produced is: the installed power that has significantly reduced driving engine; Bigger starting, brake torque can be provided; Energy stored can be controlled it and utilize according to the running conditions of vehicle needs, has reduced unnecessary waste, has improved the utilization ratio again of energy; Can realize vehicle independent steering and individual drive, manoevreability is good.
Description of drawings
Fig. 1 is the structural representation that the bus four-wheel drives the hydraulic hybrid driving device entirely.
Fig. 2 is the hydraulic schematic diagram that the bus four-wheel drives the hydraulic hybrid driving device entirely.
1,3,9. power-transfer clutch 2. constant pressure variable displacement pumps 4,10. secondary component 5,11. variable oil cylinders 6,12. electro-hydraulic proportional valves 7. hydraulic energy-accumulating assemblies 8. reducing valves
The specific embodiment
Explain below below in conjunction with accompanying drawing 1,2 and embodiment the utility model being done.
A kind of bus four-wheel drives the hydraulic hybrid driving device entirely and is made up of constant pressure variable displacement pump 2, one or more hydraulic accumulation energy assembly 7, secondary component 4 and 10, variable oil cylinder 5 and 11, electro-hydraulic proportional valve 6 and 12, reducing valve 8 etc.; Constant pressure variable displacement pump 2 connects with driving engine by power-transfer clutch 1, and two secondary components 4 connect with two front-wheels about bus by power-transfer clutch 3, and two groups of electro-hydraulic proportional valves 6 are made of one with variable oil cylinder 5 and are installed in respectively on two secondary components 4; Two secondary components 10 connect with two trailing wheels about bus by power-transfer clutch 9, and two groups of electro-hydraulic proportional valves 9 are made of one with variable oil cylinder 11 and are installed in respectively on two secondary components 10; Hydraulic energy-accumulating assembly 7 is made up of hydraulic accumulator 7-1, accumulation of energy control cock 7-3, shutoff valve 7-2, the oil inlet and outlet of hydraulic accumulator 7-1 is connected with the end hydraulic fluid port of shutoff valve 7-2, the other end hydraulic fluid port of shutoff valve 7-2 is connected with the oil outlet of accumulation of energy control cock 7-3, and the oil inlet of accumulation of energy control cock 7-3 is connected on system's main line; The oil inlet of reducing valve 8 also is connected on system's main line, and the oil outlet of reducing valve 8 is connected with the oil inlet of electro-hydraulic proportional valve 6,12 respectively; Constant pressure variable displacement pump 2, secondary component 4,10 and hydraulic energy-accumulating assembly 7 etc. are installed on the bus chassis.
When vehicle begins glancing impact, controller sends control command and produces control signal according to certain control method gives electro-hydraulic proportional valve 6 and 12, distinguish the motion of control variable oil cylinder 5 and 11, regulate the size of secondary component 4 and 10 swashplate angles (zero crossing), make it with the work of Hydraulic Pump operating mode, close power-transfer clutch 3 and 9, secondary component is under the effect of vehicle inertia kinetic energy, to system's feedback energy.Control accumulation of energy control cock 7-3 action switches to position, a left side by meta, and energy just is stored among the hydraulic accumulator 7-1 like this, for vehicle launch, quicken, use when travelling.Because tandem hydraulic hybrid driving system is the constant pressure network system, when hydraulic accumulator 7-1 was oil-filled, constant pressure variable displacement pump 2 was also oil-filled to hydraulic accumulator 7-1 at secondary component 4 and 10, until be full of reach default pressure till.
At vehicle launch, quicken, when travelling, controller sends control command and gives electro-hydraulic proportional valve 6 and 12, distinguish the motion of control variable oil cylinder 5 and 11, regulate the swashplate angle zero crossing of secondary component 4 and 10 and the size of swashplate angle, make it be in the work of HM Hydraulic Motor operating mode, close power-transfer clutch 3 and 9.The accumulation of energy control cock 7-3 of modulated pressure accumulation of energy assembly 7 switches to right position by meta, and the high pressure oil that stores among the hydraulic accumulator 7-1 just discharges like this, and jointly to secondary component 4 and 10 fuel feeding, powered vehicle is moved with constant pressure variable displacement pump 2.In the work, can take advantage of charge material amount size, arteries of communication flow situation according to vehicle, control the work of one or more hydraulic energy-accumulating assemblies 7, when vehicle take advantage of that the charge material amount is little, when the arteries of communication flow is big, the release of hydraulic accumulator stored energy in hydraulic energy-accumulating assembly of may command; When vehicle takes advantage of that the charge material amount is big, arteries of communication flow hour, the release of hydraulic accumulator stored energy in a plurality of hydraulic energy-accumulating assemblies of may command.
As seen,, realized the control that energy utilizes again, thereby improved the utilization ratio again of energy by control to hydraulic accumulator.The effect of hydraulic accumulator 7-1 is the energy that is used to store recovery; The effect of accumulation of energy control cock 7-3 is the release (promptly utilizing again) that is used for modulated pressure energy storage 7-1 stored energy, and accumulation of energy control cock 7-3 can be solenoid directional control valve, electro-hydraulic reversing valve, electrohydraulic servo valve or electro-hydraulic proportional valve; The effect of shutoff valve 7-2 is when accumulation of energy control cock 7-3 damages maintenance, is used for closing the oil inlet and outlet of hydraulic accumulator 7-1, prevents that the high pressure oil that stores from flowing out.

Claims (2)

1, a kind of bus four-wheel drives the hydraulic hybrid driving device entirely and is made up of constant pressure variable displacement pump (2), one or more hydraulic accumulation energy assembly (7), secondary component (4,10), variable oil cylinder (5,11), electro-hydraulic proportional valve (6,12), reducing valve (8); It is characterized in that constant pressure variable displacement pump (2) connects with driving engine by power-transfer clutch (1), two secondary components (4) connect with two front-wheels about bus by power-transfer clutch (3), and two groups of electro-hydraulic proportional valves (6) are made of one with variable oil cylinder (5) and are installed in respectively on two secondary components (4); Two secondary components (10) connect with two trailing wheels about bus by power-transfer clutch (9), and two groups of electro-hydraulic proportional valves (9) are made of one with variable oil cylinder (11) and are installed in respectively on two secondary components (10); Hydraulic energy-accumulating assembly (7) is made up of hydraulic accumulator (7-1), accumulation of energy control cock (7-3), shutoff valve (7-2), the oil inlet and outlet of hydraulic accumulator (7-1) is connected with an end hydraulic fluid port of shutoff valve (7-2), the other end hydraulic fluid port of shutoff valve (7-2) is connected with the oil outlet of accumulation of energy control cock (7-3), and the oil inlet of accumulation of energy control cock (7-3) is connected on system's main line; The oil inlet of reducing valve (8) also is connected on system's main line, and the oil outlet of reducing valve (8) is connected with the oil inlet of electro-hydraulic proportional valve (6,12) respectively; Constant pressure variable displacement pump (2), secondary component (4,10) are installed on the bus chassis with hydraulic energy-accumulating assembly (7).
2, a kind of bus four-wheel according to claim 1 drives the hydraulic hybrid driving device entirely, it is characterized in that, described accumulation of energy control cock (7-3) is solenoid directional control valve or electro-hydraulic reversing valve or electrohydraulic servo valve or electro-hydraulic proportional valve.
CNU2008202329193U 2008-12-26 2008-12-26 Four-wheel fully-driven hydraulic hybrid power transmission device of bus Expired - Fee Related CN201320956Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008202329193U CN201320956Y (en) 2008-12-26 2008-12-26 Four-wheel fully-driven hydraulic hybrid power transmission device of bus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008202329193U CN201320956Y (en) 2008-12-26 2008-12-26 Four-wheel fully-driven hydraulic hybrid power transmission device of bus

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886640A (en) * 2010-07-02 2010-11-17 哈尔滨工程大学 Manual adjustable low-voltage three-way hydraulic drive system
CN102848909A (en) * 2012-09-29 2013-01-02 吴亚利 Automobile electronic-control hydraulic independent shaft end driving system
CN106515424A (en) * 2016-11-11 2017-03-22 中国船舶重工集团公司第七0四研究所 Independent hydraulic drive system of automobile
CN110762066A (en) * 2019-11-21 2020-02-07 山东交通学院 Robot hydraulic pressure moving platform based on energy regeneration
CN110821900A (en) * 2019-11-21 2020-02-21 山东交通学院 Robot secondary adjustment hydraulic moving platform
CN110816659A (en) * 2019-11-21 2020-02-21 山东交通学院 Independent drive and independent steering robot secondary adjustment hydraulic pressure moving platform

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101886640A (en) * 2010-07-02 2010-11-17 哈尔滨工程大学 Manual adjustable low-voltage three-way hydraulic drive system
CN102848909A (en) * 2012-09-29 2013-01-02 吴亚利 Automobile electronic-control hydraulic independent shaft end driving system
CN106515424A (en) * 2016-11-11 2017-03-22 中国船舶重工集团公司第七0四研究所 Independent hydraulic drive system of automobile
CN106515424B (en) * 2016-11-11 2019-06-28 中国船舶重工集团公司第七0四研究所 A kind of vehicle hydraulic independent driving system
CN110762066A (en) * 2019-11-21 2020-02-07 山东交通学院 Robot hydraulic pressure moving platform based on energy regeneration
CN110821900A (en) * 2019-11-21 2020-02-21 山东交通学院 Robot secondary adjustment hydraulic moving platform
CN110816659A (en) * 2019-11-21 2020-02-21 山东交通学院 Independent drive and independent steering robot secondary adjustment hydraulic pressure moving platform

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C17 Cessation of patent right
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Granted publication date: 20091007

Termination date: 20100126