CN104228541A - Hydraulic hybrid power device of heavy vehicle - Google Patents
Hydraulic hybrid power device of heavy vehicle Download PDFInfo
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- CN104228541A CN104228541A CN201410507167.7A CN201410507167A CN104228541A CN 104228541 A CN104228541 A CN 104228541A CN 201410507167 A CN201410507167 A CN 201410507167A CN 104228541 A CN104228541 A CN 104228541A
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- control valve
- hydraulic
- main control
- motor
- solenoid directional
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Abstract
The invention provides a hydraulic hybrid power device of a heavy vehicle. The hydraulic hybrid power device comprises a plurality of hydraulic pumps/motors, energy accumulators and a hydraulic oil tank, wherein a rotating shaft of each hydraulic pump/motor is connected in parallel with a transmission shaft of the vehicle, each hydraulic pump/motor is connected with a main control valve group, in addition, a loop is formed, and an oil inlet and outlet opening of each hydraulic pump/motor is connected with the corresponding energy accumulator and the hydraulic oil tank through the main control valve groups. During the vehicle braking, hydraulic oil flows from the hydraulic oil tank to the corresponding energy accumulator through the main control valve groups; during the vehicle starting, the hydraulic oil flows from the corresponding energy accumulator to the hydraulic oil tank through the main control valve groups; during the normal running of the vehicle, the hydraulic oil circularly flows on an inside oil path of the main control valve groups through the main control valve groups. The hydraulic hybrid power device has the advantages that each hydraulic pump/motor is provided with one main control valve group, the complicated working condition requirement of the vehicle is met, and in addition, each main control valve group is compact in structure, low in cost and small in size. The hydraulic hybrid power device is provided with a plurality of hydraulic pumps/motors, the main control valve groups and the energy accumulators, the arrangement is more compact, the installation space is smaller, and the hydraulic hybrid power device is applicable to vehicles with greater loads.
Description
Technical field
The present invention relates to hydraulic efficiency equipment design field, particularly relate to a kind of heavy-duty vehicle hydraulic hybrid power device.
Background technology
Vehicle its kinetic energy when brake deceleration has been changed into heat energy by brake facing by friction.If become hydraulic energy to store kinetic transformation during vehicle brake, when vehicle start accelerates, the hydraulic energy of storage is discharged, power-assisted driving effect can be played to the traveling of vehicle, the fuel oil consumption of vehicle motor can be saved, simultaneously, when can also alleviate vehicle start, over-emitting black exhaust phenomenon, has economic benefit and social benefit.Usually hydraulic hybrid power device is adopted to become hydraulic energy to store kinetic transformation during brake in prior art, in order to not change the operating habit of driver as much as possible, when utilizing hydraulic hybrid power device to carry out brake deceleration or starting acceleration, energy storage must be controlled to the storage of energy or release.For realizing this purpose, prior art adopts pump/motor mostly; But employing pump/motor, when hydraulic oil flows through this kind equipment, energy ezpenditure is comparatively large, and the energy regenerating recycling efficiency of device can be made to decline.
In addition, the application vehicle that mainly load is less of prior art, for heavy-duty vehicle, if brake kinetic energy will be stored as much as possible, the accumulation of energy capacity requirement of hydraulic energy-accumulating system is often larger.Because installation (particularly the installing additional) space on heavy-duty vehicle is often limited, a definite limitation is there is owing to selecting super large-scale standard Hydraulic Elements, also due to the complex working condition of vehicle must be considered during design, comprise the situations such as starting is accelerated, normal traveling, brake deceleration, reversing, overhaul of the equipments, design compact conformation, the satisfactory power hydraulic system of function becomes technical barrier.
Summary of the invention
For the above-mentioned problem mentioned, the invention discloses a kind of heavy-duty vehicle hydraulic hybrid power device, it is characterized in that, comprise hydraulic pump/motor, energy storage, hydraulic reservoir and main control valve group, the rotating shaft of described hydraulic pump/motor is connected with the transmission shaft of vehicle, described hydraulic pump/motor is connected main control valve group and forms loop, being connected with described energy storage and described hydraulic reservoir by described main control valve group into and out of hydraulic fluid port of described hydraulic pump/motor;
During vehicle brake, described main control valve group hydraulic control oil flows to described energy storage from described hydraulic reservoir after described hydraulic pump/motor; When vehicle start accelerates, described main control valve group makes hydraulic oil flow through the backward described hydraulic reservoir of described hydraulic pump/motor from described energy storage; During normal vehicle operation, described main control valve group makes hydraulic oil flow in the internal oil passages cocycle of described main control valve group.
Preferably, described main control valve group includes the first solenoid directional control valve, the second solenoid directional control valve and the 3rd solenoid directional control valve; Wherein,
Described first electromagnetic switch is sent out and in parallelly with described hydraulic pump/motor is formed the first loop, and described first loop is communicated with described energy storage;
Described second solenoid directional control valve and the 3rd solenoid directional control valve are in parallel with described hydraulic pump/motor again after connecting forms second servo loop, and the passage between two solenoid directional control valves is communicated with described hydraulic reservoir.
Preferably, described main control valve group also includes the first inserted valve, the second inserted valve, the 3rd inserted valve, the 4th inserted valve, described first solenoid directional control valve, the second solenoid directional control valve, the 3rd solenoid directional control valve is connected to the first inserted valve, the second inserted valve, the 3rd inserted valve;
Described 4th inserted valve to be arranged on the first loop and to connect with described first solenoid directional control valve, on described first loop and the connection location of described energy storage between described 4th inserted valve and described first solenoid directional control valve string.
Preferably, described first solenoid directional control valve, the second solenoid directional control valve and the 3rd solenoid directional control valve all adopt two-bit triplet solenoid directional control valve.
Preferably, described main control valve group is arranged on an integrated package together with described hydraulic pump/motor.
Preferably, the input end pipeline of described energy storage is provided with energy storage control cock group.
Preferably, described energy storage control cock group is made up of by pass valve and a 2/2-way solenoid directional control valve, and described by pass valve is in parallel with described 2/2-way solenoid directional control valve.
Preferably, the rotating shaft of described hydraulic pump/motor is connected in parallel by gear case and vehicular transmission shaft.
Preferably, this heavy-duty vehicle hydraulic hybrid power device comprises two or more hydraulic circuits be made up of hydraulic pump/motor and main control valve group, and formation in parallel one large loop between each hydraulic circuit.
Preferably, this heavy-duty vehicle hydraulic hybrid power device includes two or more described energy storage, and two or more described energy storage is in being set up in parallel, and two or more energy storage is all connected with described large loop.
The present invention, owing to adopting above technical scheme, makes it compared with prior art, has following advantage and good effect:
(1) in the present invention, each hydraulic pump/motor is equipped with a main control valve group, so just can adopt quantitative hydraulic pump/motor, with in prior art with compared with the variable delivery hydraulic pump/motor of discharge capacity, cost of the present invention is low and size is little;
(2) the present invention is by arranging main control valve group, achieves the requirement of the various situation such as vehicle start, normal traveling, brake, reversing, can meet the requirement of vehicle complex working condition;
(3) the present invention arranges multiple stage hydraulic pump/motor, main control valve group and energy storage, and arrange comparatively compact, required installation is less, is applicable to the vehicle of large load.
Accompanying drawing explanation
By reference to the accompanying drawings, by hereafter state detailed description, more clearly can understand above-mentioned and other feature and advantage of the present invention, wherein:
Fig. 1 is that figure is shown in structural representation of the present invention;
Fig. 2 is the hydraulic schematic diagram of main control valve group and hydraulic pump/motor;
Fig. 3 is the equivalent schematic diagram of main control valve group and hydraulic pump/motor;
Fig. 4 is the structural representation of energy storage control cock;
Fig. 5 is oily flow path direction schematic diagram under normal vehicle operation operating mode;
Fig. 6 is oily flow path direction schematic diagram under vehicle start accelerating mode;
Fig. 7 is oily flow path direction schematic diagram under vehicle brake decelerating mode;
Fig. 8 is oily flow path direction schematic diagram under vehicle backing operating mode;
Fig. 9 is multiple stage hydraulic pump/motor situation lower device in parallel system hydraulic schematic diagram.
Nomenclature:
1-vehicular transmission shaft
2-gear case;
3-rotating shaft
4-hydraulic pump/motor
5-main control valve group
501-first solenoid directional control valve
502-second solenoid directional control valve
503-the 3rd solenoid directional control valve
504-first inserted valve
505-second inserted valve
506-the 3rd inserted valve
507-the 4th inserted valve
6-energy storage control cock group
601-by pass valve
602-2/2-way solenoid directional control valve
7-energy storage
8-hydraulic reservoir
9-filter.
Detailed description of the invention
See the accompanying drawing that the embodiment of the present invention is shown, hereafter in more detail the present invention will be described.But the present invention can realize in many different forms, and should not be construed as by the restriction in the embodiment of this proposition.On the contrary, it is abundant and complete open in order to reach for proposing these embodiments, and makes those skilled in the art understand scope of the present invention completely.In these accompanying drawings, for clarity sake, may be exaggerated size and the relative size in layer and region.
With reference to figure 1-8, a kind of heavy-duty vehicle hydraulic hybrid power device provided by the invention, can meet suitable dress property requirement, the requirement of selection standard Hydraulic Elements and the requirement of vehicle complex working condition.This heavy-duty vehicle hydraulic hybrid power device mainly comprises hydraulic pump/motor 4, energy storage 7 and hydraulic reservoir 8, the rotating shaft of hydraulic pump/motor 4 is connected with vehicular transmission shaft 2, hydraulic pump/motor 4 is connected with a main control valve group 5 and forms loop, being connected with energy storage 7, hydraulic reservoir 8 by main control valve group 5 into and out of hydraulic fluid port of hydraulic pump/motor 4.The number of hydraulic pump/motor 4, energy storage 7 can be one or more, is not restricted herein.
Embodiment one
In the present embodiment, heavy-duty vehicle hydraulic hybrid power device includes a hydraulic pump/motor and an energy storage, is described in detail based on this below.
Concrete, hydraulic pump/motor 4 is parts, it is characterized by the effect can either playing pump, is pressure energy, plays changes mechanical energy again the effect of motor, pressure energy is converted into mechanical energy; Usual hydraulic pump/motor 4 can adopt common HM Hydraulic Motor to realize, and when rotating under the driving of motor drive shaft in external torque, just becomes pump.The rotating shaft of hydraulic pump/motor 4 realizes in parallel by gear case 2 with vehicular transmission shaft 1, wherein be provided with two pitch wheels in gear case, two gears are connected with the rotating shaft of hydraulic pump/motor 4 and vehicular transmission shaft 1 respectively, thus realize the parallel relationship between the rotating shaft of hydraulic pump/motor 4 and vehicular transmission shaft 1.
Hydraulic pump/motor 4 is connected with thermal accumulator 7 and hydraulic reservoir 8 by main control valve group 5, thus realize under the various different state of vehicle, hydraulic pump/motor 4 and between thermal accumulator 7 and hydraulic reservoir 8 various hydraulic oil flow through route.With reference to Fig. 2, main control valve group 5 includes three solenoid directional control valves and four inserted valves in the present embodiment, three solenoid directional control valves are the first solenoid directional control valve 501, second solenoid directional control valve 502 and the 3rd solenoid directional control valve 503, four inserted valves is respectively the first inserted valve 504, second inserted valve 505, the 3rd inserted valve 506 and the 4th inserted valve 507 respectively; As Figure 2-3, first solenoid directional control valve 501 and the first inserted valve 504 are connected to form multifunctional electromagnetic valves part DT1, second solenoid directional control valve 502 and the second inserted valve 505 are connected to form multifunctional electromagnetic valves part DT2, and the 3rd solenoid directional control valve 503 and the 3rd inserted valve 506 are connected to form multifunctional electromagnetic valves part DT3; Multifunctional electromagnetic valves part DT1 is in parallel with hydraulic pump/motor 4 forms the first loop, and the first loop is provided with a branch road and is communicated with energy storage 7; Multifunctional electromagnetic valves part DT2 and multifunctional electromagnetic valves part DT3 are in parallel with hydraulic pump/motor 4 again after connecting forms second servo loop, and is provided with a branch road between multifunctional electromagnetic valves part DT2 and multifunctional electromagnetic valves part DT3 and is communicated with hydraulic reservoir 8; 4th inserted valve 507 to be arranged on the first loop and to connect with multifunctional electromagnetic valves part DT1, on the first loop and the branch road connection location of energy storage between the 4th inserted valve 507 and multifunctional electromagnetic valves part DT1.In the present embodiment, the object arranging four inserted valves is that during large discharge, loss of pressure is less in order to make the effective drift diameter of major loop comparatively large, certain main control valve group 5 also can not arrange inserted valve, only be provided with three solenoid directional control valves, set as the case may be, be not restricted herein; Three solenoid directional control valves specifically can just use two-bit triplet solenoid directional control valve, and the type of certain solenoid directional control valve also can adjust as the case may be.
In the present embodiment, main control valve group 5 and hydraulic pump/motor 4 form a hydraulic circuit, and be all arranged on an integrated package and form a hydraulic manifold block, each component part of main control valve group 5 and hydraulic pump/motor 4 with adopt board-like connection between integrated package, be screwed; Between each component part of main control valve group 5, and each component part all adopts hydraulic tubing to be connected with between hydraulic pump/motor 4, hydraulic reservoir 8, accumulator 7.
In the present embodiment, the input end pipeline of energy storage 7 is provided with energy storage control cock group 6; Concrete, as shown in Figure 4, energy storage control cock group 6 is made up of by pass valve 601 and 2/2-way solenoid directional control valve 602, and by pass valve 601 and 2/2-way solenoid directional control valve 602 are arranged in parallel; Wherein 2/2-way solenoid directional control valve 602 is nomal closed type, when needs keep in repair whole device time, electric by making 2/2-way solenoid directional control valve 602 obtain, by emptying for the pressure in energy storage 7.
With reference to figure 5-8, below just the principle of work of the present invention under the various travel situations of vehicle be described, specific as follows:
Fig. 5 is oily flow path direction schematic diagram under normal vehicle operation operating mode, now multifunctional electromagnetic valves part DT1, multifunctional electromagnetic valves part DT2 and multifunctional electromagnetic valves part DT3 are all in power failure state, hydraulic oil is idle loop on second servo loop, and hydraulic pump/motor 4 dallies, and the present invention is worked hardly to vehicle.
Fig. 6 is oily flow path direction schematic diagram under vehicle start accelerating mode, and now multifunctional electromagnetic valves part DT1 and multifunctional electromagnetic valves part DT2 obtains electric; Hydraulic oil is supplied to main control valve group 5 by energy storage 7, and drive hydraulic pump/motor 4 according to the flow direction shown in Fig. 6, hydraulic oil is got back in hydraulic reservoir 8 after hydraulic pump/motor 4; Hydraulic oil through overdrive hydraulic pump/motor 4 time, the rotating shaft of hydraulic pump/motor 4 realizes in parallel by gear case 2 with vehicular transmission shaft 1, and moment of torsion is passed to vehicular transmission shaft 1, drive vehicle acceleration; In this operating condition, pressure energy passes to hydraulic pump/motor 4 by energy storage 7, passes to vehicular transmission shaft, realize the acceleration of vehicle after changing into mechanical energy by the rotating shaft of hydraulic pump/motor 4, gear case 2.
Fig. 7 is oily flow path direction schematic diagram under vehicle brake decelerating mode, and now multifunctional electromagnetic valves part DT3 obtains electric; Vehicular transmission shaft 1 passes to moment of torsion by gear case 2 rotating shaft of hydraulic pump/motor 4, and hydraulic oil is exported by hydraulic reservoir 8 and flow in energy storage 7 after hydraulic pump/motor 4 of overdriving.In this operating condition, mechanical energy passes to the rotating shaft of hydraulic pump/motor 4 by the transmission shaft of vehicle, to change into after pressure energy by Pipe transfer to energy storage.
Fig. 8 is oily flow path direction schematic diagram under vehicle backing operating mode, now multifunctional electromagnetic valves part DT1, multifunctional electromagnetic valves part DT2 and multifunctional electromagnetic valves part DT3 are all in power failure state, hydraulic oil is idle loop on second servo loop, and hydraulic pump/motor 4 dallies, but its idle running direction is identical with the idle running direction in Fig. 5.
A kind of heavy-duty vehicle hydraulic hybrid power device provided by the invention, hydraulic pump/motor is equipped with a main control valve group, so just can adopt quantitative hydraulic pump/motor, with in prior art with compared with the variable delivery hydraulic pump/motor of discharge capacity, cost is low and size is little; Meanwhile, the present invention achieves the requirement of the various situation such as vehicle start, normal traveling, brake, reversing by main control valve group, can meet the requirement of vehicle complex working condition; In addition, main control valve group loop is simple and clear, compact conformation, oil circuit effective drift diameter are large, is applicable to high-power energy transmission, is applicable to heavy-duty vehicle.
Embodiment two
In the present embodiment, heavy-duty vehicle hydraulic hybrid power device includes two or more hydraulic pump/motor 4 and two or more energy storages 7, is described in detail based on this below.
Each hydraulic pump/motor 4 is equipped with a main control valve group 5, and both are connected to form a hydraulic circuit, comprises two or more hydraulic circuit in the present embodiment, and formation in parallel one large loop between two or more hydraulic circuit.Wherein, the rotating shaft of the hydraulic pump/motor 4 in each hydraulic circuit all realizes in parallel by gear case 2 with vehicular transmission shaft 1; Concrete, (two hydraulic pump/motors 4 are included) when the present invention includes two hydraulic circuits, include three in gear case 2 to be arranged side by side and pitch wheel, a middle gear is connected with vehicular transmission shaft 1, and the gear of both sides is connected the transmission of moment of torsion with the rotating shaft of two hydraulic pump/motors 4 respectively; The rotating shaft of a hydraulic pump/motor 4 all can be installed in two ends due to the axle of two side gears, and therefore the gear case of three gear compositions at most can for four hydraulic pump/motors.
The oil inlet of two or more hydraulic circuit is communicated with to get up, and two or more energy storage 7 is set up in parallel, and two or more energy storage is connected respectively on the oil inlet connecting pipeline of two or more hydraulic circuit; The oil outlet of two or more hydraulic circuit is connected with hydraulic reservoir, hydraulic oil is in the inside idle loop of two or more hydraulic circuit, or enter in hydraulic reservoir 8 after flowing through each hydraulic circuit by accumulator 7, or enter accumulator 7 after flowing through hydraulic circuit by hydraulic reservoir 8.
In the present embodiment, all the other structures of this heavy-duty vehicle hydraulic hybrid power device and principle of work all with reference to the description of embodiment one, all repeat no more herein.The present invention arranges multiple stage hydraulic pump/motor, main control valve group and energy storage, and arrange comparatively compact, required installation is less, and the car load be suitable for is larger; And the present invention realizes classification accumulation of energy (referring to that the acceleration/accel to vehicle, negative acceleration carry out classification) or classification exoergic by the electric time that obtains of each change-over valve in each hydraulic pump/motor main control loop of staggering, and makes car retardation or accelerates comparatively steady.
In sum, the invention provides a kind of heavy-duty vehicle hydraulic hybrid power device, comprise some hydraulic pump/motors, energy storage and hydraulic reservoir, the rotating shaft of hydraulic pump/motor is in parallel with the transmission shaft of vehicle, each hydraulic pump/motor is connected with a main control valve group and forms loop, being connected with energy storage and hydraulic reservoir by main control valve group into and out of hydraulic fluid port of hydraulic pump/motor; During vehicle brake, main control valve group makes hydraulic oil flow to energy storage from hydraulic reservoir; During vehicle start, main control valve group makes hydraulic oil flow to hydraulic reservoir from energy storage; During normal vehicle operation, main control valve group makes hydraulic oil flow in the internal oil passages cocycle of main control valve group.In the present invention, each hydraulic pump/motor is equipped with a main control valve group, meets the requirement of vehicle complex working condition, and main control valve group compact conformation, cost is low, size is little; The present invention arranges multiple stage hydraulic pump/motor, main control valve group and energy storage, and arrange comparatively compact, installing space is less, and the car load be suitable for is larger.
Because those skilled in the art should be understood that the present invention can not depart from the spirit or scope of the present invention with many other concrete forms realizations.Although describe embodiments of the invention, the present invention should be understood and should not be restricted to these embodiments, within the spirit and scope of the invention that those skilled in the art can define as appended claims, make change and amendment.
Claims (10)
1. a heavy-duty vehicle hydraulic hybrid power device, it is characterized in that, comprise hydraulic pump/motor, energy storage, hydraulic reservoir and main control valve group, the rotating shaft of described hydraulic pump/motor is connected with the transmission shaft of vehicle, described hydraulic pump/motor is connected main control valve group and forms loop, being connected with described energy storage and described hydraulic reservoir by described main control valve group into and out of hydraulic fluid port of described hydraulic pump/motor;
During vehicle brake, described main control valve group hydraulic control oil flows to described energy storage from described hydraulic reservoir after described hydraulic pump/motor; When vehicle start accelerates, described main control valve group makes hydraulic oil flow through the backward described hydraulic reservoir of described hydraulic pump/motor from described energy storage; During normal vehicle operation, described main control valve group makes hydraulic oil flow in the internal oil passages cocycle of described main control valve group.
2. heavy-duty vehicle hydraulic hybrid power device according to claim 1, is characterized in that, described main control valve group includes the first solenoid directional control valve, the second solenoid directional control valve and the 3rd solenoid directional control valve; Wherein,
Described first electromagnetic switch is sent out and in parallelly with described hydraulic pump/motor is formed the first loop, and described first loop is communicated with described energy storage;
Described second solenoid directional control valve and the 3rd solenoid directional control valve are in parallel with described hydraulic pump/motor again after connecting forms second servo loop, and the passage between two solenoid directional control valves is communicated with described hydraulic reservoir.
3. heavy-duty vehicle hydraulic hybrid power device according to claim 2, it is characterized in that, described main control valve group also includes the first inserted valve, the second inserted valve, the 3rd inserted valve, the 4th inserted valve, described first solenoid directional control valve, the second solenoid directional control valve, the 3rd solenoid directional control valve is connected to the first inserted valve, the second inserted valve, the 3rd inserted valve;
Described 4th inserted valve to be arranged on the first loop and to connect with described first solenoid directional control valve, on described first loop and the connection location of described energy storage between described 4th inserted valve and described first solenoid directional control valve string.
4. the heavy-duty vehicle hydraulic hybrid power device according to Claims 2 or 3, is characterized in that, described first solenoid directional control valve, the second solenoid directional control valve and the 3rd solenoid directional control valve all adopt two-bit triplet solenoid directional control valve.
5. heavy-duty vehicle hydraulic hybrid power device according to claim 1, is characterized in that, described main control valve group is arranged on an integrated package together with described hydraulic pump/motor.
6. heavy-duty vehicle hydraulic hybrid power device according to claim 1, is characterized in that, the input end pipeline of described energy storage is provided with energy storage control cock group.
7. heavy-duty vehicle hydraulic hybrid power device according to claim 6, is characterized in that, described energy storage control cock group is made up of by pass valve and a 2/2-way solenoid directional control valve, and described by pass valve is in parallel with described 2/2-way solenoid directional control valve.
8. heavy-duty vehicle hydraulic hybrid power device according to claim 1, is characterized in that, the rotating shaft of described hydraulic pump/motor is connected in parallel by gear case and vehicular transmission shaft.
9. heavy-duty vehicle hydraulic hybrid power device according to claim 1, it is characterized in that, this heavy-duty vehicle hydraulic hybrid power device comprises two or more hydraulic circuits be made up of hydraulic pump/motor and main control valve group, and formation in parallel one large loop between each hydraulic circuit.
10. heavy-duty vehicle hydraulic hybrid power device according to claim 9, it is characterized in that, this heavy-duty vehicle hydraulic hybrid power device includes two or more described energy storage, two or more described energy storage is in being set up in parallel, and two or more energy storage is all connected with described large loop.
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| CN201410507167.7A CN104228541A (en) | 2014-09-28 | 2014-09-28 | Hydraulic hybrid power device of heavy vehicle |
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| CN201410507167.7A CN104228541A (en) | 2014-09-28 | 2014-09-28 | Hydraulic hybrid power device of heavy vehicle |
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| CN101037087A (en) * | 2006-03-14 | 2007-09-19 | 朱荣辉 | mix-driving and energy-saving device of continuously variable motor vehicle |
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Application publication date: 20141224 |