CN205523695U - Vehicle hydraulic pressure auxiliary brake , drive and energy recuperation system - Google Patents

Vehicle hydraulic pressure auxiliary brake , drive and energy recuperation system Download PDF

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Publication number
CN205523695U
CN205523695U CN201620067978.4U CN201620067978U CN205523695U CN 205523695 U CN205523695 U CN 205523695U CN 201620067978 U CN201620067978 U CN 201620067978U CN 205523695 U CN205523695 U CN 205523695U
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hydraulic
oil
energy
valve
ecu
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董梁
秦绪鑫
胡全义
刘彬
刘林
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Weichai Power Co Ltd
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Weichai Power Co Ltd
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Abstract

The utility model relates to a vehicle hydraulic pressure auxiliary brake, drive and energy recuperation system, it includes engine, ECU, power takeoff, hydraulic pump motor, delays fast braking overflow valves, function selection valves, energy storage ware and hydraulic motor. The input shaft of power takeoff and the power take off of engine end is connected, the actuating shaft connection of output shaft and hydraulic pump motor, hydraulic motor's power take off end is connected with directive wheel power, and the export of energy storage ware is gone up to connect and is filled drainage valve, delay fast braking overflow valves, the export of filling drainage valve is connected to its oil inlet, the valves is selected to the function, and its oil inlet is connected with the pressure hydraulic fluid port of hydraulic pump motor, and its oil -out is two, and the hydraulic motor oil circuit is connected to one of them oil -out, another oil -out is connected in the export of filling drainage valve and is delayed between the oil inlet of fast braking overflow valves. The utility model discloses multiplicable vehicle driver power and car brakeing power realize that braking energy retrieves and the hydraulic starting function to can finally realize energy -conservingly.

Description

Vehicle hydraulic auxiliary braking, driving and energy-recuperation system
Technical field
This utility model relates to vehicle hydraulic aid system field, a kind of vehicle hydraulic auxiliary braking, driving and energy-recuperation system.
Background technology
The engineering truck operating conditions such as tradition mine vehicle, commercial truck, tractor are complicated and changeable.Under bad working environments, such as country road surface, road surface, mountain area, road surface, mining area, Chang Po road surface, muddy road surface etc., the rugged degree in road surface is big, attachment coefficient is little, and vehicle drive force is not enough, affects the dynamic property of car load, now need to increase certain driving force, vehicle driving requirements could be met.Simultaneously, under bad working environments, brake force also is difficult to meet safety traffic demand, as when fully loaded long-time braking descending, needed continuously or frequently use running brake, brake wear is serious, caloric value is big, braking ability is unstable, brakes is the most out of hand, has a strong impact on travel safety, also reduces the service life of running brake.It addition, energy is converted into heat by car braking, it is impossible to enough in time energy is reclaimed, affect VE Vehicle Economy.
Conventional mechanical transmission system can not well adapt to operating mode complicated and changeable, and fuel economy is poor.Hydraulic hybrid power system can reduce fuel oil consumption, part improves the dynamic property of conventional truck, but do not adapt to operating mode complicated and changeable, simultaneously bigger to structural change, control algolithm is complicated, development cost is high, is not suitable for application and development on the engineering trucks such as traditional mine vehicle, commercial truck, tractor.Hydraulic hybrid power system can realize part Brake energy recovery, but when accumulator volume is full of, brake energy recovering system is inoperative, and vehicle can only lean on traditional frictional damping, and brake force is not easy stable, affects service brake safety.
Based on the problems referred to above, applicant in this case, on the premise of not changing the basic drive mechanism of vehicle, increases a set of hydraulic booster system, to increase vehicle drive force and vehicle braking force, it is achieved the function such as Brake energy recovery, hydraulic starting, finally realizes energy-conservation purpose.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of vehicle hydraulic auxiliary braking, driving and energy-recuperation system, this system is not on the basis of changing the basic drive mechanism of vehicle, vehicle drive force and vehicle braking force can be increased, realize Brake energy recovery and hydraulic starting function, and can realize energy-conservation.
For solving above-mentioned technical problem, vehicle hydraulic auxiliary braking of the present utility model, driving and energy-recuperation system include electromotor and ECU, it is structurally characterized in that this system also includes power takeoff, hydraulic pump motor, retarder brake overflow valve group, function selecting valve group, accumulator and hydraulic motor, wherein:
Power takeoff, its power shaft is connected with the clutch end of electromotor, and its output shaft is connected with the drive shaft of hydraulic pump motor;
Hydraulic motor, its clutch end is connected with deflecting roller power, and it is connected formation hydraulic oil circuit with force feed mouth and the inlet port of hydraulic pump motor respectively into and out of hydraulic fluid port;
Accumulator, it is used for storing pressure oil, and bleeder valve is filled in the upper connection of its outlet, and the electric control end filling bleeder valve electrically connects with ECU;
Retarder brake overflow valve group, its oil-in connects the outlet filling bleeder valve, and its electric control end electrically connects with ECU;
Function selecting valve group, its oil-in is connected with the force feed mouth of hydraulic pump motor, its oil-out is two, and one of them oil-out connects between the oil-in that hydraulic motor oil circuit, another oil-out are connected to fill the outlet of bleeder valve and retarder brake overflow valve group, and its electric control end electrically connects with ECU.
Installation and maintenance relief valve between oil-out and the oil-in of described retarder brake overflow valve group, the electric control end of maintenance relief valve electrically connects with ECU.
Pressure and flow transducer are installed in the outlet of described accumulator.
Hydraulic oil heat-radiation loop is set up, on hydraulic oil heat-radiation loop and connect bypass valve in the radiator of described electromotor.
Described retarder brake overflow valve group includes main overflow valve and for regulating the pressure-control valve of main overflow valve oil pressure relief, and the electric control end of pressure-control valve electrically connects with ECU.
Described function selecting valve group includes two big flow logical valves and for selecting to turn on the reversing control valve of two big flow logical valves, and the electric control end of reversing control valve electrically connects with ECU.
Use said structure, electromotor has two power transmission directions, one is that normal engine drives pattern, power transmission direction is: electromotor-clutch-gearbox-power transmission shaft-drive axle-driving wheel, another is hydraulic-driven pattern, and power transmission direction is: electromotor-power takeoff-hydraulic pump motor-hydraulic motor-deflecting roller.Hydraulic pump motor has pump condition and two kinds of operating modes of motor operating conditions: during pump condition, by its inlet port oil suction, by its high pressure hydraulic fluid port to hydraulic system fuel feeding, is hydraulic energy by changes mechanical energy;During motor operating conditions, oil-in and the equal allowable stress of inlet port, pressure oil it is redirected back into, drives rotary components to realize mechanical rotation, it is achieved to be mechanical energy by hydraulic energy transfer.
The beneficial effects of the utility model are: 1) this utility model uses same set of hydraulic system to realize two kinds of functions, at utmost utilizes element, reduces cost, and hydraulic pump motor, hydraulic motor are once purchases Hydraulic Elements, arrange that mounting structure is simple;2) this utility model is compared with conventional truck, can significantly improve the dynamic property under the engineering truck bad working environments such as mine vehicle, commercial truck, tractor;3) this utility model is compared with conventional truck, when at vehicle continuous braking and braking for a long time, it can be ensured that obtain stable brake force, it is ensured that car braking safety, realizes part Brake energy recovery simultaneously;4) this utility model is compared with conventional truck, and braking recovers energy and is mainly used in engine start, improves the capacity usage ratio of vehicle;5) this utility model increases a set of hydraulic system on the basis of being mechanical transmission structure based on existing conventional truck, realize hydraulic pressure process auxiliary drive, hydraulic auxiliary brake and energy regenerating simultaneously, and will recover energy for engine start, the overall transmission arrangments not changing former vehicle, compared with hydraulic hybrid power system, structural change is less, and various Hydraulic Elements are common component, easily realize;6) this utility model is the system of individualism, is apolegamy structure for car load, can realize coexisting with original system of vehicle transmission, car braking, the slow system of vehicle and complementary, have mounting arrangements and have motility, it is simple to complete machine producer is to the layout of system and apolegamy.
In sum, this utility model can increase vehicle drive force and vehicle braking force, it is achieved Brake energy recovery and hydraulic starting function, and can finally realize energy-conservation.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings:
Fig. 1 is structural principle schematic diagram of the present utility model.
Detailed description of the invention
Referring to the drawings, vehicle hydraulic auxiliary braking of the present utility model, driving and energy-recuperation system include electromotor and ECU, and this system also includes power takeoff 1, hydraulic pump motor 2, retarder brake overflow valve group 3, function selecting valve group 4, accumulator 5 and hydraulic motor 6.Wherein: the power shaft of power takeoff 1 is connected with the clutch end of electromotor 7, the output shaft of power takeoff 1 is connected with the drive shaft of hydraulic pump motor 2;Hydraulic motor 6 is two, and the clutch end of two hydraulic motors 6 is connected with two deflecting roller 8 power respectively, hydraulic motor 6 be connected formation hydraulic oil circuit respectively with the force feed mouth of hydraulic pump motor 2 and inlet port into and out of hydraulic fluid port;Accumulator 5 is used for storing pressure oil, and in the outlet of accumulator 5, bleeder valve 9 is filled in connection, and the electric control end filling bleeder valve 9 electrically connects with ECU, and the outlet of accumulator 5 is provided with pressure and flow transducer 11;The oil-in of retarder brake overflow valve group 3 connects the outlet filling bleeder valve 9, the electric control end of retarder brake overflow valve group 3 electrically connects with ECU, concrete, retarder brake overflow valve group 3 includes main overflow valve and for regulating the pressure-control valve of main overflow valve oil pressure relief, and the electric control end of pressure-control valve electrically connects with ECU;The oil-in of function selecting valve group 4 is connected with the force feed mouth of hydraulic pump motor 2, the oil-out of function selecting valve group 4 is two, one of them oil-out connects between the oil-in that hydraulic motor 6 oil circuit, another oil-out are connected to fill the outlet of bleeder valve 9 and retarder brake overflow valve group 3, the electric control end of function selecting valve group 4 electrically connects with ECU, concrete, function selecting valve group 4 includes two big flow logical valves and for selecting to turn on the reversing control valve of two big flow logical valves, and the electric control end of reversing control valve electrically connects with ECU.
Referring to the drawings, system is connected with hydraulic oil container 14 by repairing mechanism, and wherein, repairing mechanism includes slippage pump 15, filter 16, repairing overflow valve 23, counterbalance valve 17 etc..
Referring to the drawings, installation and maintenance relief valve 10 between oil-out and the oil-in of retarder brake overflow valve group 3, the electric control end of maintenance relief valve 10 electrically connects with ECU.Maintenance 10 safety effects of relief valve, when overhauling retarder brake loop, can open maintenance relief valve 10 and topping up bleeder valve 9, discharge accumulator 5 pressure.
Referring to the drawings, in the radiator 12 of electromotor, set up hydraulic oil heat-radiation loop, on hydraulic oil heat-radiation loop and connect bypass valve 13.Transforming on the basis of available engine radiator, increase hydraulic pressure heat-radiation loop, increasing bypass valve 13 can close heat sinking function, plays security function.
In said structure, electromotor 7 has two power transmission directions, one is that normal engine drives pattern, power transmission direction is: electromotor 7-clutch 18-change speed gear box 19-power transmission shaft 22-drive axle 20-driving wheel 21, another is hydraulic-driven pattern, and power transmission direction is: electromotor 7-power takeoff 1-hydraulic pump motor 2-hydraulic motor 6-deflecting roller 8.Hydraulic pump motor 2 has pump condition and two kinds of operating modes of motor operating conditions: during pump condition, by its inlet port oil suction, by its high pressure hydraulic fluid port to hydraulic system fuel feeding, is hydraulic energy by changes mechanical energy;During motor operating conditions, oil-in and the equal allowable stress of inlet port, pressure oil it is redirected back into, drives rotary components to realize mechanical rotation, it is achieved to be mechanical energy by hydraulic energy transfer.
Below in conjunction with each operating mode, this utility model is made a concrete analysis of.
1) normal running mode, function selecting valve group 4 connects hydraulic auxiliary brake loop, and hydraulic pump motor 2 does not works, and hydraulic pump motor discharge capacity is 0.Power transmission direction is: electromotor 7-clutch 18-change speed gear box 19-power transmission shaft 22-drive axle 20-driving wheel 21.
2) hydraulic pressure process auxiliary drive pattern, function selecting valve group 4 connects hydraulic motor oil circuit, and hydraulic pump motor 2, hydraulic motor 6 constitute closed system, carry out static pressure transmission process auxiliary drive deflecting roller 8.
3) hydraulic retarding braking mode, without topping up state;Function selecting valve group 4 connects hydraulic retarding brake circuit;Meanwhile, topping up bleeder valve 9 is closed, and accumulator 5 disconnects with hydraulic retarding brake circuit;Power transmission direction: driving wheel 21-drive axle 20-power transmission shaft 22-change speed gear box 19-clutch 18-electromotor 7-power takeoff 1-hydraulic pump motor 2(changes mechanical energy is hydraulic energy) heating of-function selecting valve group 4-retarder brake overflow valve group 3()-radiator 12-hydraulic oil container 14.
4) hydraulic retarding braking mode, topping up state;Function selecting valve group 4 connects hydraulic retarding brake circuit;Meanwhile, topping up bleeder valve 9 is opened, accumulator 5 and hydraulic retarding brake circuit UNICOM, preferentially accumulator 5 is carried out topping up;After accumulator 5 topping up completes, pressure no longer changes, during close to POC_H, (POC_H is that accumulator sets Pressure maximum value, POC_L is that accumulator sets pressure minimum), close topping up bleeder valve 9, accumulator 5 disconnects with hydraulic retarding brake circuit, and system enters hydraulic retarding braking mode, without topping up state.Wherein, retarder brake overflow valve group 3 oil pressure relief is set as 330 bar, the highest 330 bar of accumulator 5 supercharging pressure.Power transmission direction: driving wheel 21-drive axle 20-power transmission shaft 22-change speed gear box 19-clutch 18-electromotor 7-power takeoff 1-hydraulic pump motor 2(changes mechanical energy is hydraulic energy) heating of-function selecting valve group 4-retarder brake overflow valve group 3()-topping up bleeder valve 9-accumulator 5.
5) hydraulic pressure assistant starting state, ECU judges that ignition switch is in ignition location, and engine speed is 0, and the POC value of accumulator 5 enters hydraulic pressure assistant starting pattern more than POC_L, system;Otherwise, normal electrically activating pattern is entered.Power transmission direction: accumulator 5-topping up bleeder valve 9-function selecting valve group 4-hydraulic pump motor 2(hydraulic energy transfer is mechanical energy)-power takeoff 1-electromotor 7.
This utility model has the advantages that
1) this utility model uses same set of hydraulic system to realize two kinds of functions, at utmost utilizes element, reduces cost, and hydraulic pump motor, hydraulic motor are once purchases Hydraulic Elements, arranges that mounting structure is simple;
2) this utility model is compared with conventional truck, can significantly improve the dynamic property under the engineering truck bad working environments such as mine vehicle, commercial truck, tractor;
3) this utility model is compared with conventional truck, when at vehicle continuous braking and braking for a long time, it can be ensured that obtain stable brake force, it is ensured that car braking safety, realizes part Brake energy recovery simultaneously;
4) this utility model is compared with conventional truck, and braking recovers energy and is mainly used in engine start, improves the capacity usage ratio of vehicle;
5) this utility model increases a set of hydraulic system on the basis of being mechanical transmission structure based on existing conventional truck, realize hydraulic pressure process auxiliary drive, hydraulic auxiliary brake and energy regenerating simultaneously, and will recover energy for engine start, the overall transmission arrangments not changing former vehicle, compared with hydraulic hybrid power system, structural change is less, and various Hydraulic Elements are common component, easily realize;
6) this utility model is the system of individualism, is apolegamy structure for car load, can realize coexisting with original system of vehicle transmission, car braking, the slow system of vehicle and complementary, have mounting arrangements and have motility, it is simple to complete machine producer is to the layout of system and apolegamy.
In sum, this utility model is not limited to above-mentioned detailed description of the invention.Those skilled in the art, on the premise of without departing from spirit and scope of the present utility model, can do some changes and modification.Protection domain of the present utility model should be as the criterion with claim of the present utility model.

Claims (6)

1. a vehicle hydraulic auxiliary braking, driving and energy-recuperation system, including electromotor and ECU, it is characterized in that this system also includes power takeoff (1), hydraulic pump motor (2), retarder brake overflow valve group (3), function selecting valve group (4), accumulator (5) and hydraulic motor (6), wherein:
Power takeoff (1), its power shaft is connected with the clutch end of electromotor (7), and its output shaft is connected with the drive shaft of hydraulic pump motor (2);
Hydraulic motor (6), its clutch end is connected with deflecting roller (8) power, and it is connected formation hydraulic oil circuit with force feed mouth and the inlet port of hydraulic pump motor (2) respectively into and out of hydraulic fluid port;
Accumulator (5), it is used for storing pressure oil, and bleeder valve (9) is filled in the upper connection of its outlet, and the electric control end filling bleeder valve (9) electrically connects with ECU;
Retarder brake overflow valve group (3), its oil-in connects the outlet filling bleeder valve (9), and its electric control end electrically connects with ECU;
Function selecting valve group (4), its oil-in is connected with the force feed mouth of hydraulic pump motor (2), its oil-out is two, one of them oil-out connects hydraulic motor (6) oil circuit, another oil-out is connected to fill between the outlet of bleeder valve (9) and the oil-in of retarder brake overflow valve group (3), and its electric control end electrically connects with ECU.
2. vehicle hydraulic auxiliary braking as claimed in claim 1, driving and energy-recuperation system, it is characterized in that installation and maintenance relief valve (10) between oil-out and the oil-in of described retarder brake overflow valve group (3), the electric control end of maintenance relief valve (10) electrically connect with ECU.
3. vehicle hydraulic auxiliary braking as claimed in claim 1, driving and energy-recuperation system, is characterized in that being provided with pressure and flow transducer (11) in the outlet of described accumulator (5).
4. vehicle hydraulic auxiliary braking as claimed in claim 1, driving and energy-recuperation system, set up hydraulic oil heat-radiation loop in it is characterized in that the radiator (12) of described electromotor, on hydraulic oil heat-radiation loop and connect bypass valve (13).
5. vehicle hydraulic auxiliary braking as claimed in claim 1, driving and energy-recuperation system, it is characterized in that described retarder brake overflow valve group (3) includes main overflow valve and for regulating the pressure-control valve of main overflow valve oil pressure relief, the electric control end of pressure-control valve electrically connects with ECU.
6. vehicle hydraulic auxiliary braking as claimed in claim 1, driving and energy-recuperation system, it is characterized in that described function selecting valve group (4) includes two big flow logical valves and for selecting to turn on the reversing control valve of two big flow logical valves, the electric control end of reversing control valve electrically connects with ECU.
CN201620067978.4U 2016-01-25 2016-01-25 Vehicle hydraulic pressure auxiliary brake , drive and energy recuperation system Active CN205523695U (en)

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Application Number Priority Date Filing Date Title
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108270316A (en) * 2016-12-31 2018-07-10 郑州吉田专利运营有限公司 A kind of four-drive electric car
CN108270315A (en) * 2016-12-31 2018-07-10 郑州吉田专利运营有限公司 A kind of two drive electric automobiles
CN108400679A (en) * 2017-02-08 2018-08-14 郑州吉田专利运营有限公司 A kind of combination pump of three screw pump and spiral mover switched reluctance machines
CN112483623A (en) * 2020-11-09 2021-03-12 北京理工大学 Mechanical hydraulic composite multi-mode driving system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108270316A (en) * 2016-12-31 2018-07-10 郑州吉田专利运营有限公司 A kind of four-drive electric car
CN108270315A (en) * 2016-12-31 2018-07-10 郑州吉田专利运营有限公司 A kind of two drive electric automobiles
CN108400679A (en) * 2017-02-08 2018-08-14 郑州吉田专利运营有限公司 A kind of combination pump of three screw pump and spiral mover switched reluctance machines
CN112483623A (en) * 2020-11-09 2021-03-12 北京理工大学 Mechanical hydraulic composite multi-mode driving system

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