CN102862468A - Machine liquid hybrid power system based on double-power output - Google Patents
Machine liquid hybrid power system based on double-power output Download PDFInfo
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Abstract
The invention discloses a machine liquid hybrid power system based on double-power output. The machine liquid hybrid power system based on the double-power output comprises a machine-liquid double-power output engine, a power device hydraulic plunger module enabling mechanical energy of the engine to be converted into hydraulic energy, a hydraulic energy storage module for generating high hydraulic energy and releasing and storing the hydraulic energy and a power confluence module for reasonably matching and converging the hydraulic energy and the mechanical energy of the machine-liquid double-power output engine. The hydraulic energy storage module comprises a hydraulic pump/motor and a hydraulic energy accumulator. When mechanical power is supplied to a vehicle, the hydraulic pump/motor is in a hydraulic motor working mode, and the hydraulic energy converted by the hydraulic plunger module is supplied to the vehicle through the hydraulic pump/motor. When braking energy of the vehicle is recovered, the hydraulic pump/motor is in a hydraulic pump working mode, and low-pressure oil is pressurized to be stored in a high-pressure energy accumulator. The machine liquid hybrid power system based on the double-power output can supply the hydraulic energy and the mechanical energy.
Description
Technical field
The present invention relates to power and Hydraulic Field.
Background technology
In recent years, along with the fast development of economy, the automobile pollution sustainable growth unprecedented swift and violent development occurred as the ic engine industry of automobile major impetus.Yet although combustion engine has carried out optimization and the innovation of many kinds of measures, along with automobile pollution grows with each passing day, automobile exhaust pollution problem and the energy shock puzzlement brought become increasingly conspicuous, and human health, the ecologic balance are caused grave danger.Under so huge dual-pressure, ic engine industry is in the point of transition of its historical development.People actively are devoted to the exploitation of improvement, optimization and the novel power device of conventional engines itself on the one hand, with the variation that adapts to energy mix and the performance requriements that satisfies increasingly stringent; Design on the other hand various multi-energy-source composite power system.Under this background, various novel hybrid system grows up like the mushrooms after rain, such as machine-electric mixed dynamic system etc.The hybrid power system of current trend is mixed into the master with machine-electricity, and its driving system mainly contains tandem, parallel, series parallel type and four kinds of connection modes of wheel limit formula.
Common power take-off implement all is single-power output, a conventional engines output mechanical energy for example, hydraulic free-piston engine output hydraulic pressure energy.Under the background of energy shock and environmental protection; can integrate combustion engine and Hydraulic Pump, the power take-off implement of the advantages such as integrated internal combustion engine technology, hydraulic technique, microelectronic technique, control technology are strong with its potential energy-saving and environmental protection, fuel tolerance, high power density, highly flexible layout is also not general.
Summary of the invention
But the machine-liquid mixing system that the purpose of this invention is to provide a kind of double dynamical output of flexible control, its compact conformation, power density is high, and combined efficiency is high.
For achieving the above object, the present invention adopts following technical scheme:
A kind of machine hydraulic hybrid type power system based on double dynamical output, it comprises driving engine, hydraulic plunger module, hydraulic energy module, and the mechanical energy module; Wherein, described hydraulic energy module comprises hydraulic pump/motor (7), high-pressure oil passage (5(a)), low pressure oil way (5(b)), low pressure accumulator (12) and high pressure accumulator (6), described mechanical energy module comprises planetary gear train (15); Described high pressure accumulator (6) and described low pressure accumulator (12) are respectively by described high-pressure oil passage (5(a)) with described low pressure oil way (5(b)) link to each other with described hydraulic pump/motor (7), described hydraulic pump/motor (7) also links to each other with the first input end of described planetary gear train (15).
Machine hydraulic hybrid type power system based on double dynamical output of the present invention, described driving engine comprises rocking arm, and described hydraulic plunger module comprises hydraulic plunger (2) and hydraulic ram cylinders (3), and this driving engine can be single cylinder and multi-cylinder engine; Described plunger (2) comprises upper extreme point and lower extreme point, and described upper extreme point links to each other with the ball pivot form with described rocking arm, and described lower extreme point links to each other with the ball pivot form with described hydraulic plunger (2); Described hydraulic ram cylinders (3) is fixed on the engine body, and described hydraulic plunger (2) lower extreme point is positioned at described hydraulic ram cylinders (3), and can move around up and down along the hydraulic ram cylinders axis.
Machine hydraulic hybrid type power system based on double dynamical output of the present invention, described hydraulic energy module also comprises unidirectional compression valve (4), unidirectional suction valve (8), electromagnetic valve (9), low pressure oil cylinder (11) and electromagnetic valve (10); Described electromagnetic valve (9) is arranged between described low pressure accumulator (12) and low pressure oil way 5b, described unidirectional compression valve (4) is arranged between hydraulic actuating cylinder oil outlet A and the high-pressure oil passage 5a, described unidirectional suction valve (8) is arranged between hydraulic cylinder oil inlet B mouth and the low pressure oil way, and described electromagnetic valve (10) is arranged between described B mouth and the described low pressure oil cylinder (11); Described hydraulic ram cylinders (3) comprises A mouth and B mouth, and the A mouth is by hydraulic oil pipe and described high-pressure oil passage (5(a)) connect, the B mouth is by hydraulic oil pipe and described low pressure oil way (5(b)) and described low pressure oil cylinder (11) connection.
Machine hydraulic hybrid type power system based on double dynamical output of the present invention, described mechanical energy module also comprises engine crankshaft mouth (13), power-transfer clutch 1(14), power-transfer clutch 2(16), drive axle (17) and flower wheel (18); Planetary gear train (15) comprises change speed gear box, the mechanism of confluxing, the second mechanical input end and mechanical mouth, the second mechanical input end links to each other with crankshaft output end (13) by mechanical drive shaft, described power-transfer clutch (14) is arranged on the transmission shaft between described crankshaft output end (13) and the described planetary gear train (15), described mechanical mouth links to each other with described rear driving axle (17) by mechanical drive shaft, and described power-transfer clutch (17) is arranged between the two.
Machine hydraulic hybrid type power system based on double dynamical output provided by the invention, utilize driving engine can pass through the bent axle output mechanical energy, this driving engine is converted into hydraulic energy output by rocking arm with mechanical energy simultaneously, thereby realize the characteristics of mechanical energy and the double dynamical output of hydraulic energy, formation machine-hydraulic hybrid type power system; In addition on the one hand, adopt the recyclable braking energy of hydraulic energy-accumulating technology in this system, reduce system energy loss.This patent of invention has the advantage of machinery output and hydraulic pressure output simultaneously, driving cycle requirement in conjunction with vehicle, can reach the purpose of optimizing the cycle of engine operating mode by coupling hydraulic pressure horsepower output and mechanical horsepower output, improve economy and the emission performance of driving engine.As the case may be, also hydraulic energy can be converted to mechanical energy output.This system optimization the Energy Transfer form of driving engine and driving system, realized the soft readjustment of power drive, further improved the power system power density.Realize the highly flexible layout, effectively utilized the space; By adopting energy accumulating technique, make small power motor satisfy the power demand of higher-wattage vehicle.
Description of drawings
Fig. 1 is the scheme drawing with specific embodiment of the present invention of a hydraulic plunger;
Fig. 2 is the scheme drawing with another specific embodiment of the present invention of a plurality of hydraulic plungers;
Fig. 3 is the scheme drawing that one embodiment of the invention is applied to car load;
Fig. 4 is the car load energy flow graph when using the driving engine first start of vehicle of one embodiment of the invention;
Fig. 5 is the vehicle car load energy flow graph when the hydraulic plunger energy storage is done that uses one embodiment of the invention;
Fig. 6 is the vehicle car load energy flow graph when normal vehicle operation that uses one embodiment of the invention;
Fig. 7 is the car load energy flow graph of vehicle when braking energy is gathered in the crops that uses one embodiment of the invention;
Fig. 8 is the car load energy flow graph of vehicle when idling is stopped that uses one embodiment of the invention;
Fig. 9 is the car load energy flow graph of vehicle when vehicle starts again that uses one embodiment of the invention.
The specific embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
A kind of machine hydraulic hybrid type power system based on double dynamical output, it comprises driving engine, be used for engine mechanical can be converted to the hydraulic plunger module of hydraulic energy, hydraulic energy module for generation of high pressure liquid pressure energy, release and storage hydraulic energy, and be used for the mechanical energy that will be converted by hydraulic energy and by driving engine directly the mechanical energy of output carry out Proper Match and converge, and the mechanical energy after will integrating is transported to the mechanical energy module of the drive wheel of the vehicle that this system assembles; Wherein, described hydraulic energy module comprises hydraulic pump/motor 7 and high pressure accumulator 6, when providing mechanical horsepower for vehicle, hydraulic pump/motor 7 is the HM Hydraulic Motor mode of operation, and the hydraulic energy that will come via the hydraulic plunger module converts offers vehicle by press pump/motor 7; When reclaiming vehicle braking energy, hydraulic pump/motor 7 is the hydraulic pump works pattern, will be stored in high pressure accumulator 6 after the low pressure oil pressurization.
As shown in Figure 1, described driving engine comprises rocking arm; Described hydraulic plunger module bag hydraulic plunger 2 and hydraulic ram cylinders 3; Described hydraulic plunger 2 comprises upper extreme point and lower extreme point, and described upper extreme point links to each other with the ball pivot form with described rocking arm, and described lower extreme point links to each other with the ball pivot form with described hydraulic plunger 2; Described hydraulic ram cylinders 3 is fixed on the engine body, and described hydraulic plunger 2 lower extreme points are positioned at described hydraulic ram cylinders 3, and can move around up and down along plunger case 3 axis.Fig. 1 has only provided the machine that hydraulic plunger in the single cylinder situation consists of-hydraulic hybrid type power system, and another plunger case can access machine-hydraulic hybrid type power system equally; Fig. 2 has provided the connection diagram of a plurality of hydraulic plungers access machine-hydraulic hybrid type power system in the single cylinder situation.
Described hydraulic energy module comprises unidirectional compression valve 4, high-pressure oil passage 5(a), low pressure oil way 5(b), unidirectional suction valve 8, control connect low pressure oil way 5(b) electromagnetic valve 9, low pressure oil cylinder 11, be used for electromagnetic valve 10 and low pressure accumulator 12 that low pressure oil cylinder 11 is connected in control; Described high pressure accumulator 6 and described low pressure accumulator 12 are respectively by described high-pressure oil passage 5(a) with described low pressure oil way 5(b) link to each other with described hydraulic pump/motor 7, described electromagnetic valve 9 is arranged at described low pressure accumulator 12 and low pressure oil way 5(b) between, described unidirectional compression valve 4 is arranged at described A mouth and high-pressure oil passage 5(a) between, described unidirectional suction valve 8 is arranged between described B mouth and the low pressure oil way, and described electromagnetic valve 10 is arranged between described B mouth and the described low pressure oil cylinder 11; Described hydraulic ram cylinders 3 comprises A mouth and B mouth, and the A mouth is connected by hydraulic oil pipe and described high-pressure oil passage 5 (a), and the B mouth is by hydraulic oil pipe and described low pressure oil way 5 (b) and 11 connections of described low pressure oil cylinder.
Described mechanical energy module comprises engine crankshaft mouth 13, power-transfer clutch A14, planetary gear train 15, power-transfer clutch B16, drive axle 17 and flower wheel 18; Planetary gear train 15 comprises change speed gear box and the mechanism of confluxing, described planetary gear train 15 is provided with two mechanical input ends and a mechanical mouth, two mechanical input ends link to each other with crankshaft output end 13 with hydraulic pump/motor 7 by mechanical drive shaft respectively, described power-transfer clutch 14 is arranged on the transmission shaft between described crankshaft output end 13 and the described planetary gear train 15, described mechanical mouth links to each other with described rear driving axle 17 by mechanical drive shaft, and described power-transfer clutch 17 is arranged between the two.
The hydraulic plunger module is the device that engine mechanical can be converted to hydraulic energy, and Fig. 1 is single plunger form.Cooperate and performance requriements according to different driving engines, driving engine has the multi-cylinder form, and then this invention then is comprised of a plurality of hydraulic plunger modules, as shown in Figure 2.
The various piece working process of the machine hydraulic hybrid type power system based on double dynamical output of the present invention is described below:
In the engine operation process, rocking arm swings by rule, and plunger 2 upper extreme points swing with rocking arm, and this moment, hydraulic oil plunger 2 lower extreme points pumped along hydraulic ram cylinders 3 axis, pressed the work of plunger pump principle.When closing control is connected oil cylinder electromagnetic valve 10, the crank motion output hydraulic pressure energy of hydraulic plunger.When electromagnetic valve 10 disconnected, reciprocating hydraulic plunger is the output hydraulic pressure energy not.Thus, realize hydraulic energy output adjusting by controlling this electromagnetic valve.
1) when needs plunger output hydraulic pressure can the time: control oil cylinder electromagnetic valve 10 disconnects, and when piston during as for top dead point, hydraulic plunger 2 lower ends move to eminence; When piston moved toward bottom dead point, piston moved from left to right, and the pressure in the hydraulic ram cylinders 3 raise; Enter high-pressure side by the A mouth after the hydraulic oil pressurization in the plunger case, when hydraulic fluid pressure is lower than high pressure accumulator 6 setting value, hydraulic oil in the hydraulic ram cylinders 3 and the hydraulic pump/motor 7 and flow back to low pressure accumulator 12 of flowing through, this moment, hydraulic pressure hydraulic pump/motor 7 mode of operations were the motor state, hydraulic energy is converted to mechanical energy is transported to planetary gear train 15; When hydraulic ram cylinders 3 interior hydraulic fluid pressures are higher than high pressure accumulator 6 setting value, the hydraulic oil of high pressure accumulator 6 does not outbound flow, hydraulic oil in the hydraulic ram cylinders 3 flows into high pressure accumulator with the pressure of surplus, remainder flows to hydraulic pump/motor 7 and flows back to low pressure accumulator, this moment, hydraulic pressure hydraulic pump/motor 7 mode of operations were the motor state, hydraulic energy is converted to mechanical energy is transported to planetary gear train 15.When piston moved from bottom dead point toward top dead point, hydraulic plunger 2 moved from right to left, and this moment, hydraulic ram cylinders 3 internal pressures reduced, and low pressure oil way switch electromagnetic valve 9 closures are connected in control, and hydraulic oil enters hydraulic ram cylinders from low pressure accumulator 12 by the B mouth.
2) when not needing the storage liquid pressure energy, namely when the complete output mechanical energy of driving engine, oil cylinder switch electromagnetic valve 10 closures are connected in control.This moment, the hydraulic oil of hydraulic ram cylinders 3 linked to each other with fuel tank 11, and hydraulic plunger 2 left and right sides crank motions are exported without hydraulic energy.In addition, when the hydraulic fluid pressure in the high pressure accumulator 6 was higher than high-pressure oil passage 5 (a), the hydraulic oil in the high pressure accumulator 6 still flowed to hydraulic pump/motor 7, and hydraulic energy is converted to mechanical energy.
3) braking recovery state (hydraulic energy regeneration system)
The hydraulic energy regeneration system is comprised of two-way and reversible volume adjustable hydraulic pump/motor 7 and a high-low pressure energy storage 6 and 12, hydraulic pump/motor 7 is finished the energy exchange between the high-low pressure energy storage, and low pressure accumulator 12 provides the low pressure oil sources of relatively stable abundance for low pressure oil.High pressure accumulator 6 storage and releasing brake energy.Controller in this system is used for powershift, the signal output between management driving engine and the energy storage and reclaims brake energy.
When automobile brake, engine idle, power-transfer clutch 114 disconnects, power-transfer clutch 216 closures, and oil cylinder switch electromagnetic valve 10 is connected in control, hydraulic pump/motor 7 mode of operations are the pump state, this moment, drive axle 17 drove hydraulic pump/motor work by planetary gear train 15, and the kinetic energy of automobile drives hydraulic oil pump 7 work by planetary mechanism, and the hydraulic oil in the low pressure accumulator 12 is pumped in the high pressure accumulator 6, realize the recovery of braking energy, braking energy is converted into hydraulic energy stores.Braking energy reclaims and can even control: carry out braking energy by the pressure between control high pressure accumulator 6 and the hydraulic pump/motor 7 and flow and reclaim control.Concrete grammar is: when car brakeing is slowed down, gently step on first brake pedal, when pedal angle is in low-intensity brake district, controller is accepted the brake pedal signal and is sent instruction, changes hydraulic pump/motor 7 stroking mechanism inclination angles work quadrant, and hydraulic pump/motor 7 plays the Hydraulic Pump effect, the inertia band Hydraulic Pump of swivel wheel rotates, fluid in the low pressure accumulator 12 is drawn into Hydraulic Pump 7, and high-voltage oil liquid is outputed to high pressure accumulator 6, realize that brake energy reclaims.
4) startup, acceleration mode
When startup and acceleration, first light step on the gas pedal, accelerator pedal angle is in the zone of only using the hydraulic energy regeneration system, controller is accepted accelerator pedal signal and is sent instruction, change hydraulic pump/motor 7 stroking mechanism inclination angles work quadrant, make hydraulic pump/motor 7 be used as HM Hydraulic Motor, high pressure accumulator 6 is to hydraulic pressure horse 7, be that hydraulic pump/motor reaches the energy that output stores, HM Hydraulic Motor 7, be that hydraulic pump/motor rotates and drive vehicle launch, while HM Hydraulic Motor 7, namely the fluid of hydraulic pump/motor oil outlet is got back to low pressure accumulator 12; Power-transfer clutch 114 disconnects in this process, and driving engine does not start.When the hydraulic energy that accelerate to need more power and high pressure accumulator 6 is not enough, just start the engine work and to planetary gear train 7 output mechanical energies.
Operation power during with the different operating mode of Full Vehicle System of using the machine hydraulic hybrid type power system based on double dynamical output of the present invention flows to and is described below:
Figure three applies to the scheme drawing of car load for this invention, and 1 is double dynamical output engine, and this contraposition engine can be multi-cylinder engine, can select concrete cylinder number according to the power needs.Each cylinder plug end is connected with low pressure oil way 5 (b) with high-pressure oil passage 5 (a) with 8 by check valve 4 respectively; 6 and 12 are respectively high pressure accumulator on the high-pressure oil passage and the low pressure accumulator on the low pressure oil way; 7 is hydraulic pump/motor, is positioned between high-pressure oil passage 5 (a) and the low pressure oil way 5 (b), and its mechanical mouth is connected with planet bus duct 15 by transmission shaft.Engine crankshaft end 13 is connected with planet bus duct 15 by transmission shaft, and transmission shaft is between the two installed a power-transfer clutch 14.Planet bus duct 15 mouths are connected with power-transfer clutch by transmission shaft and are connected with vehicle rear axle.20 is front-wheel high pressure check valve, with high-pressure oil passage and front-wheel hydraulic pump/motor 21; 22 for front wheel brake can reclaim electromagnetic valve, connects front-wheel hydraulic pump/motor 21 and low pressure oil way; The mechanical mouth of front-wheel hydraulic pump/motor 21 links to each other with the front-wheel vehicle bridge.20 effects of front-wheel high pressure check valve are that the oil that stops high-pressure oil passage flows to front-wheel hydraulic pump/motor 21, guarantee that namely this Full Vehicle System is back-wheel drive, the hydraulic energy that reclaims when can make braking simultaneously can flow to high-pressure oil passage, carries out energy storage thereby enter high pressure accumulator 6; If remove front-wheel high pressure check valve 20, and suitable change is made by system, then this Full Vehicle System is four-wheel drive system.
1) during engine starting.When the driving engine initial start, utilize driving engine with conventional start system start: utilize to need the energy of electrical equipment actuating motor to be connected fire an engine.Its power capacity transmission is shown in figure four, and power-transfer clutch 114 and power-transfer clutch 216 closures were controlled and connected oil cylinder switch electromagnetic valve 10 closures this moment.
When 2) the hydraulic plunger energy storage is done.It is relevant with hydraulic energy in the high pressure accumulator 6 that whether energy storage is done in the hydraulic plunger energy storage, when the pressure in the high pressure accumulator 6 is lower than setting value, low pressure oil way switch electromagnetic valve 9 closures are connected in control, control is connected oil cylinder switch electromagnetic valve 10 and is disconnected, front wheel brake can reclaim switch electromagnet 22 and disconnect, hydraulic plunger is that high pressure accumulator 6 replenishes the high pressure liquid force feed, guarantees to keep the setting hydraulic pressure in the high pressure accumulator 6; When hydraulic accumulator 6 energy were enough, control was connected low pressure oil way switch electromagnetic valve 9 and is disconnected, and oil cylinder switch electromagnetic valve 10 closures are connected in control, and front wheel brake can reclaim switch electromagnetic valve 22 and disconnect, and hydraulic plunger stops to be the high pressure accumulator energy storage.The energy trend was shown in figure five when the hydraulic plunger energy storage was done, and check valve 5 is opened, and check valve 18 disconnects, and hydraulic oil is pressed into high-pressure oil passage by plunger, and hydraulic oil enters high pressure accumulator.
3) during normal vehicle operation.When normal vehicle operation, whether system only exports machinery or hydraulic energy or the two has concurrently, depends on the requirement of Vehicle Driving Cycle; In design, energy saver mode and dynamic mode are arranged respectively.Master control system can according to needed pattern, determine and take mechanical energy and hydraulic energy allocation proportion, to achieve the goal.The car load energy flow is to shown in figure six during normal vehicle operation, and mechanical energy is directly by engine crankshaft 13 outputs; Check valve 5 and 18 is all closed, and hydraulic energy is then provided by high pressure accumulator 6, the continuous bulking liquor pressure energy of driving engine plunger.Power- transfer clutch 23,14 and 15 is all closed, and high pressure oil is converted to mechanical energy by Hydraulic Pump 7 with hydraulic energy, and the mechanical energy of this part mechanical energy and bent axle is converged at planet bus duct 15, and passes on the drive axle.
When 4) braking energy reclaims.When car retardation was braked, power-transfer clutch A14 disconnected, and power-transfer clutch B16 is closed, and oil cylinder switch electromagnetic valve 10 is connected in control and front wheel brake can reclaim switch electromagnet 22 closures, and driving engine 19 is in idling mode.Car load energy flow during the braking energy results is to shown in figure seven, the inertia band Hydraulic Pump 7 of swivel wheel and 21 rotates, and the fluid in the low pressure accumulator 12 is drawn into Hydraulic Pump 7, namely in the hydraulic pump/motor, and high-voltage oil liquid outputed to high pressure accumulator 6, realize that brake energy reclaims.
When 5) idling is stopped.Vehicle runs into when needing of short duration parking, car load energy flow when idling is stopped is to as shown in Figure 8, driving engine 19 is extinguished, vehicle assisted system switches to hydraulic driving mode, namely pass through the devices such as belt drive Air compressor by HM Hydraulic Motor 7 outputting powers, guarantee that engine stop on period vehicle assisted system can work.24 is ancillary system among the figure, such as air-conditioning compressor etc.Under this state, power-transfer clutch A23 disconnects, and the energy of HM Hydraulic Motor 7 outputs is used for driving ancillary system 24.
6) when vehicle need to start again.When vehicle need to start again, after namely the driver provided enabled instruction, the car load energy flow was to as shown in Figure 9; At this moment hydraulic pump/motor 7 is adjusted to the HM Hydraulic Motor operating mode, and the high pressure oil in the high pressure accumulator 6 drives the HM Hydraulic Motor rotation.This part rotating energy is divided into two parts by planetary gear train 15, and a part passes on the drive wheel by back axle, makes vehicle start and acceleration; Another part reaches driving engine 19 by power-transfer clutch A14 and bent axle 13 with moment of torsion, drags driving engine 19 high-speed startings, makes driving engine 19 enter fast mode of operation.
In sum, machine hydraulic hybrid type power system based on double dynamical output of the present invention, utilize this driving engine can pass through the bent axle output mechanical energy, this driving engine is converted into hydraulic energy output by rocking arm with mechanical energy simultaneously, thereby realize the characteristics of mechanical energy and the double dynamical output of hydraulic energy, formation machine-hydraulic hybrid type power system; In addition on the one hand, adopt the recyclable braking energy of hydraulic energy-accumulating technology in this system, reduce system energy loss.This patent of invention has the advantage of machinery output and hydraulic pressure output simultaneously, driving cycle requirement in conjunction with vehicle, can reach the purpose of optimizing the cycle of engine operating mode by coupling hydraulic pressure horsepower output and mechanical horsepower output, improve economy and the emission performance of driving engine.As the case may be, also hydraulic energy can be converted to mechanical energy output.This system optimization the Energy Transfer form of driving engine and driving system, realized the soft readjustment of power drive, further improved the power system power density.Realize the highly flexible layout, effectively utilized the space; By adopting energy accumulating technique, make small power motor satisfy the power demand of higher-wattage vehicle.Utilize this driving engine can realize that mechanical energy is exported simultaneously and more mutually conversion and the function of regulating between output mechanical energy and the hydraulic energy, as automotive power, realization machine-hydraulic hybrid type power drives concept with this.And the advantages such as small size, low weight, superpower are arranged, this fermentation patent is by the general layout to machine-liquid hybrid drive system, in conjunction with vehicle driving-cycle to the mechanical horsepower output of driving engine and the power match between the hydraulic pressure horsepower output, optimize the state of cyclic operation of driving engine, reach the purpose of optimizing driving engine economy, emission performance.In conjunction with pattern, the structure of different driving systems, non-conventional engine, hydraulic efficiency pressure system, Comprehensive Control are organically combined, improve the combined efficiency of system.
The above is preferred embodiment of the present invention only, is not to limit practical range of the present invention; If do not break away from the spirit and scope of the present invention, the present invention is made amendment or is equal to replacement, all should be encompassed in the middle of the protection domain of claim of the present invention.
Claims (4)
1. the machine hydraulic hybrid type power system based on the double dynamical output engine of machine-liquid is characterized in that,
Comprise the double dynamical output engine of machine-liquid, hydraulic plunger module, hydraulic energy mould, mechanical energy module, and the power flow concentration module; Wherein,
Described hydraulic energy module comprises hydraulic pump/motor (7), high-pressure oil passage (5(a)), low pressure oil way (5(b)), low pressure accumulator (12) and high pressure accumulator (6), described mechanical energy module comprises planetary gear train (15); Described high pressure accumulator (6) and described low pressure accumulator (12) are respectively by described high-pressure oil passage (5(a)) with described low pressure oil way (5(b)) link to each other with described hydraulic pump/motor (7), described hydraulic pump/motor (7) also links to each other with the first input end of described planetary gear train (15).
2. power system according to claim 1 is characterized in that,
Described driving engine (1) comprises rocking arm, described hydraulic plunger module, hydraulic plunger (2) and hydraulic ram cylinders (3);
Described hydraulic plunger (2) comprises upper extreme point and lower extreme point, and described upper extreme point links to each other with the ball pivot form with described rocking arm, and described lower extreme point center-point is positioned on the axis of described hydraulic ram cylinders (3), and can move reciprocatingly along axis; Described hydraulic ram cylinders (3) is fixed on the engine body.
3. power system according to claim 2 is characterized in that,
Described hydraulic energy module also comprises unidirectional compression valve (4), unidirectional suction valve (8), electromagnetic valve (9), low pressure oil cylinder (11) and electromagnetic valve (10);
Described electromagnetic valve (9) is arranged at described low pressure accumulator (12) and low pressure oil way (5(b)) between, described unidirectional compression valve (4) is arranged at described A mouth and high-pressure oil passage (5(a)) between, described unidirectional suction valve (8) is arranged between described B mouth and the low pressure oil way, and described electromagnetic valve (10) is arranged between described B mouth and the described low pressure oil cylinder (11);
Described hydraulic ram cylinders (3) comprises A mouth and B mouth, and the A mouth is by hydraulic oil pipe and described high-pressure oil passage (5(a)) connect, the B mouth is by hydraulic oil pipe and described low pressure oil way (5(b)) and described low pressure oil cylinder (11) connection.
4. power system according to claim 3 is characterized in that,
Described mechanical energy module also comprises engine crankshaft mouth (13), power-transfer clutch A(14), power-transfer clutch B(16), drive axle (17) and flower wheel (18);
Planetary gear train (15) comprises change speed gear box, the mechanism of confluxing, the second mechanical input end and mechanical mouth, the second mechanical input end links to each other with crankshaft output end (13) by mechanical drive shaft, described power-transfer clutch (14) is arranged on the transmission shaft between described crankshaft output end (13) and the described planetary gear train (15), described mechanical mouth links to each other with described rear driving axle (17) by mechanical drive shaft, and described power-transfer clutch (17) is arranged between the two.
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| CN103171429A (en) * | 2013-03-01 | 2013-06-26 | 北京理工大学 | Hybrid power vehicle driving device based on variable pump and quantitative multi-joint motor |
| CN103213487A (en) * | 2013-03-01 | 2013-07-24 | 北京理工大学 | Hybrid power vehicle drive device based on transformer, hydraulic pump and multi-joint motor |
| CN105502230A (en) * | 2016-01-21 | 2016-04-20 | 安徽农业大学 | Hybrid power forklift transmission system |
| CN105539132A (en) * | 2015-12-16 | 2016-05-04 | 徐州重型机械有限公司 | Dual-power drive system, engineering machinery vehicle and control method |
| CN109466305A (en) * | 2018-11-27 | 2019-03-15 | 上海电机学院 | A kind of power assist vehicle initiating booster device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103171429A (en) * | 2013-03-01 | 2013-06-26 | 北京理工大学 | Hybrid power vehicle driving device based on variable pump and quantitative multi-joint motor |
| CN103213487A (en) * | 2013-03-01 | 2013-07-24 | 北京理工大学 | Hybrid power vehicle drive device based on transformer, hydraulic pump and multi-joint motor |
| CN103171429B (en) * | 2013-03-01 | 2015-07-01 | 北京理工大学 | Hybrid power vehicle driving device based on variable pump and quantitative multi-joint motor |
| CN103213487B (en) * | 2013-03-01 | 2015-09-30 | 北京理工大学 | Based on the drive device for hybrid vehicle of voltage transformer, Hydraulic Pump and multi-joint motor |
| CN105539132A (en) * | 2015-12-16 | 2016-05-04 | 徐州重型机械有限公司 | Dual-power drive system, engineering machinery vehicle and control method |
| CN105502230A (en) * | 2016-01-21 | 2016-04-20 | 安徽农业大学 | Hybrid power forklift transmission system |
| CN105502230B (en) * | 2016-01-21 | 2017-10-27 | 安徽农业大学 | A kind of hybrid power forklift transmission system |
| CN109466305A (en) * | 2018-11-27 | 2019-03-15 | 上海电机学院 | A kind of power assist vehicle initiating booster device |
| CN109466305B (en) * | 2018-11-27 | 2021-10-01 | 上海电机学院 | Starting booster for moped |
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| CN102862468B (en) | 2016-09-14 |
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