CN101654060A - Mechanic and hydraulic hybrid type power transmission system and control method - Google Patents
Mechanic and hydraulic hybrid type power transmission system and control method Download PDFInfo
- Publication number
- CN101654060A CN101654060A CN200910092577A CN200910092577A CN101654060A CN 101654060 A CN101654060 A CN 101654060A CN 200910092577 A CN200910092577 A CN 200910092577A CN 200910092577 A CN200910092577 A CN 200910092577A CN 101654060 A CN101654060 A CN 101654060A
- Authority
- CN
- China
- Prior art keywords
- motor
- way valve
- hydraulic pump
- hydraulic
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
The invention relates to a mechanic and hydraulic hybrid type power transmission system and a control method. The power transmission system is characterized in that a hydraulic pump/motor (12) is in rigid connection between an internal-combustion engine (2) and a clutch (11); a high-pressure oil port of the hydraulic pump/motor (12) is connected to a two-position three-way valve A (4) and connected to a high-pressure accumulator (5) by a hydraulic control one-way valve (7); a low-pressure oil port of the hydraulic pump/motor (12) is connected to a low-pressure accumulator (13); the hydraulic pump/motor (12) is further connected to the hydraulic control one-way valve (7) by a two-position three-way valve B (8); a pressure sensor (6) of the high-pressure accumulator (5), a brake pedal position sensor (15), an accelerating pedal position sensor (16) and an internal-combustion engine starting key position sensor (17) are connected to a hybrid power control unit (9) by electric cables; thehybrid power control unit (9) is connected to the hydraulic pump/motor (12) by a pump/motor discharge electric hydraulic control device (14). The system has simple structure, convenient operation andlow cost. The system can be applied to transforming the in-use vehicle or a new vehicle.
Description
Technical field
The invention provides a kind of machine hydraulic hybrid type power driving system and control method, be specifically related to energy utilization, conversion and the storage of self-propelled vehicle power and driving system.The objective of the invention is to realize the energy-conservation of self-propelled vehicle and reduction of discharging.
Background technology
Along with the rapid growth of self-propelled vehicle quantity, consumption of petroleum increases year by year, and the tail gas of vehicular emission has caused serious atmospheric contamination simultaneously.Studies show that to being vehicle powered with the combustion engine, to have only the fuel oil energy of 15-25% to be used on the powered vehicle, all the other fuel oil energy are then consumed by the rolling resistance in the vehicle ' process, windage, acceleration, braking procedure.For energy consumption and the discharging that reduces self-propelled vehicle, traditional method comprises, improves the efficient of combustion engine, improves the efficient of transmission system, reduces gross vehicle weight, adopts the vehicle body of low windage etc.Above automobile energy-conserving measure need be paid huge development and productive costs, even has to sacrifice the safety and the driving performance of vehicle.The hydrogen cell vehicle has higher energy utilization efficiency and zero-emission, promise well at a specified future date, but the low cost in Hydrogen Energy produces, transport safely with technology such as high-energy-density storage and do not obtain as yet under the situation that essence breaks through, and the hydrogen cell vehicle can't be realized commercialization in the recent period.Battery electrics drive vehicle has higher energy utilization efficiency and zero-emission, technology is ripe, but under the situation that technical indexs such as the cost of storage battery, weight, energy density, power density, continual mileage, life-span, charging duration do not make decided progress as yet, a battery electrics drive vehicle very difficult round Realization industrialization can only move in the specific region.Through years of researches, vehicle circle is reached common understanding, at oil resources as yet not before the exhaustion, the ICE-powered vehicle will be a main flow, hydrogen cell and battery-driven ENV are ultimate aim, are the hybrid power technology of combustion engine and battery comparing the feasible motor vehicle for saving energy and reducing emission scheme of reality at present.Combustion engine-battery-motor/generator deep hybrid power system reclaims vehicle braking energy, adopts electrical motor to start to walk and assists combustion engine to quicken by electrical generator and makes combustion engine be in efficacious workaround all the time, realize the target of electromechanical mixing dynamic force vehicle, become one of the most promising automotive power energy saving technology at present than the pure gasoline vehicle oil saving of tradition 30-50%.
Yet storage battery-generator-type brake energy recovering system that present electromechanics mixes the employing of (combustion engine-storage battery-electric generator/electric motor) power car exists some shortcomings.Because the intrinsic charge-discharge characteristic of storage battery makes its power density lower, can't accumulate or discharge lot of energy at short notice.Under the situation of therefore very short in the car brakeing time, braking energy very high density, storage battery-generator-type brake energy recovering system is difficult to effectively to reclaim the huge kinetic energy that braking moment produces, and causes the organic efficiency of its braking energy not high.And needing often starting, braking through vehicles such as the bus of the city operations of being everlasting, taxicares, the efficiency of internal combustion engine is extremely low, and requires high to drg.This shows that structure is more simple, power density is higher, cost is lower, the hydraulic accumulator-hydraulic pump/motor formula braking energy recovery technology that is suitable for frequent braking of vehicle and starting is arisen at the historic moment.Owing to do not have the mutual conversion between chemical power and the mechanical energy in the conversion process of energy in hydraulic accumulator-hydraulic pump/motor formula brake energy recovering system, so its conversion rate is fast.In addition, because the power density of energy storage is higher, this makes hydraulic accumulator-hydraulic pump/motor formula brake energy recovering system can reclaim braking energy more effective and more quickly.Therefore, the machine liquid that has hydraulic accumulator-hydraulic pump/motor formula brake energy recovering system mixes (combustion engine-hydraulic accumulator-hydraulic pump/motor) power car and is suitable for the energy saving and environment friendly vehicle that the city operating mode travels and more and more is subjected to people's attention as another kind.
Summary of the invention
The present invention is directed to deficiency and the complexity of electromechanical mixing dynamic force system and expensive of traditional combustion engine aspect energy utilization and discharging, propose a kind of machine hydraulic hybrid type power driving system and control method.Machine hydraulic hybrid type power driving system of the present invention, according to the actual operating mode of vehicle, by to the operating condition tuning of combustion engine, adopt hydraulic pump/motor to reclaim braking energy, adopt hydraulic pump/motor cranking internal combustion engine and powered vehicle, the controlled technological means such as flame-out of employing combustion engine realizes self-propelled vehicle energy-saving and emission-reduction by a relatively large margin.
Purpose of the present invention is exactly to mix the optimization that realizes automotive power by machine liquid according to the load character and the dynamic Characteristic of Internal Combustion Engines of vehicle.This system architecture is simple, transformation is easy, easy to operate, under the condition that guarantees vehicle power and traveling comfort, make combustion engine often be operated in the efficient low-discharging district, the combustion engine of can realizing stopping is flame-out, engine conditions tuning, braking energy reclaim, only need before vehicular clutch, to install additional a hydraulic pump/motor, transform easily.
Core concept of the present invention is to adopt the starting of hydraulic pump/motor cranking internal combustion engine and powered vehicle.At low speed and load, adopt engine conditions tuning and hydraulic pump/motor accumulation of energy and combustion engine controlled flame-out, realize the energy-conservation of combustion engine and reduction of discharging.Adopt pure internal combustion engine drive in high speed.During brake, adopt hydraulic pump/motor to reclaim braking energy.Adopt hydraulic pump/motor, power-transfer clutch, change-speed box and hybrid power ECU (Electrical Control Unit) realize the efficient and anti-emission carburetor of machine hydraulic hybrid type power system.
A kind of machine hydraulic hybrid type power driving system of the present invention comprises, internal-combustion engine electronic control unit 1, combustion engine 2, actuating motor 3, change-speed box 10, power-transfer clutch 11, engine starting key position sensor 17; It is characterized in that also comprising two position three-way valve A4, high pressure accumulator 5, pressure sensor 6, hydraulic control one-way valve 7, two position three-way valve B8, hybrid power ECU (Electrical Control Unit) 9, hydraulic pump/motor 12, low pressure accumulator 13, pump/motor discharge capacity electrofluidic control device 14, brake pedal position sensor 15, accelerator pedal position sensor 16; A hydraulic pump/motor 12 is rigidly attached between combustion engine 2 and the power-transfer clutch 11, and the high pressure hydraulic fluid port of hydraulic pump/motor 12 links to each other with two position three-way valve A4, and links to each other with high pressure accumulator 5 by hydraulic control one-way valve 7; The low pressure hydraulic fluid port of hydraulic pump/motor 12 links to each other with low pressure accumulator 13; Hydraulic pump/motor 12 also links to each other with hydraulic control one-way valve 7 by two position three-way valve B8; The pressure sensor 6 of high pressure accumulator 5, brake pedal position sensor 15, accelerator pedal position sensor 16 and engine starting key position sensor 17 are connected with hybrid power control unit 9 by cable; Hybrid power control unit 9 connects hydraulic pump/motor 12 by pump/motor discharge capacity electrofluidic control device 14.
When two position three-way valve B8 is in p1 and two position three-way valve A4 and is in the p4 on-state, high pressure oil from high pressure accumulator 5 flows to hydraulic control one-way valve 7 through two position three-way valve B8, make hydraulic control one-way valve 7 reverse openings, cause high pressure oil to flow into hydraulic pump/motor 12, drive hydraulic pump/motor and rotate by two position three-way valve A4 from high pressure accumulator 5; When two position three-way valve B8 was in the p2 off-state, hydraulic control one-way valve 7 was oppositely closed.When two position three-way valve A4 was in the p3 unloading position, hydraulic pump/motor 12 was in unloaded state; When two position three-way valve A4 was in p4 on-state and two position three-way valve B8 and is in the p2 off-state, vehicle inertia drove hydraulic pump/motors 12 and rotates by change-speed box 10, power-transfer clutch 11, and the high pressure oil that pumps enters high pressure accumulator 5 storages by hydraulic control one-way valve 7.Hybrid power ECU (Electrical Control Unit) 9 receives pressure signal g, brake pedal position signal a, the acceleration pedal position signal b from high pressure accumulator pressure sensor 6, engine starting key signal c and from the combustion engine status signal h of internal-combustion engine electronic control unit 1.Hybrid power ECU (Electrical Control Unit) 9 sends that actuating motor control signal j, hydraulic pump/motor control signal d, two position three-way valve A4 control signal e, two position three-way valve B8 control signal f and combustion engine control signal i realize that the electrical motor of combustion engine or hydraulic pump/motor starting, combustion engine-hydraulic hybrid quicken, hydraulic pump/motor is to the recovery of braking energy, the hydraulic pump/motor functions such as utilization, combustion engine auto shut down and starting to braking energy.
The working mechanism of apparatus of the present invention is:
1) power of employing power-transfer clutch 11 realization hydraulic pump/motors 12 and change-speed box 10 is connected or disconnects.
2) hydraulic pump/motor 12 is rigidly connected with combustion engine 2 power take-off shafts.When combustion engine rotated, hydraulic pump/motor was followed rotation, realized load (the swash plate angle is greater than zero degree) or unloaded (the swash plate angle equals zero degree) operation of hydraulic pump/motor by the swash plate angle of regulating hydraulic pump/motor.
When 3) adopting hydraulic pump/motor 12 recovery braking energys or hydraulic pump/motor powered vehicle to travel, combustion engine 2 is followed hydraulic pump/motor and is rotated, follow the pumping work that rotates consumption in order to reduce combustion engine, instruct to internal-combustion engine electronic control unit 1 by 9 transmissions of hybrid power ECU (Electrical Control Unit), drive Variable Valve Time gear and close inlet and exhaust valve simultaneously, make piston become gas spring.When the needs internal combustion engine, send to instruct by hybrid power ECU (Electrical Control Unit) 9 and make inlet and outlet door valve timing return to normal value to internal-combustion engine electronic control unit 1.
4) adopt bladder accumulator storage hydraulic oil.A high pressure accumulator 5 is used to store the high pressure oil that hydraulic pump/motor 12 pumps, and a low pressure accumulator 13 is used to store the low pressure oil return of hydraulic pump/motor 12.
5) when brake of motor-driven vehicle or combustion engine 2 load runnings, hydraulic pump/motor 12 is in the Hydraulic Pump operating mode, and hydraulic pump/motor 12 is converted into high pressure oil to the braking energy of self-propelled vehicle and is stored in high pressure accumulator 5, realizes the recovery to braking energy; When self-propelled vehicle was started to walk, hydraulic pump/motor 12 was in the HM Hydraulic Motor operating mode, and the high pressure oil that is stored in the high pressure accumulator 5 drives hydraulic pump/motor 12 rotations, realizes takeoff outputs by power-transfer clutch 11 and change-speed box 10.
6) hybrid power ECU (Electrical Control Unit) 9 passes through to send two position three-way valve B8 control signal f, and control two position three-way valve B8 is in on-state p1 and realizes hydraulic control one-way valve 7 reverse openings, and control two position three-way valve B8 is in off-state p2, and realization hydraulic control one-way valve 7 is closed.
7) hybrid power ECU (Electrical Control Unit) 9 is by sending two position three-way valve A4 control signal e, control two position three-way valve A4 is in on-state p4, realize that hydraulic pump/motor 12 passes through hydraulic control one-way valve 7 pump oil and realizes hydraulic control one-way valves 7 reverse openings to high pressure energy storage 5 or by hybrid power ECU (Electrical Control Unit) 9, realize utilizing the high pressure oil driving hydraulic pump/motor 12 of storage in the high pressure accumulator 5 to rotate and output torques.Initial or the default position of two position three-way valve A4 is p3, and the initial or default position of two position three-way valve B8 is p2.
This device adopts following control policy, realizes the efficient operation of machine hydraulic hybrid type power system.When combustion engine 2 startings, adopt hydraulic pump/motor 12 that combustion engine 2 is dragged to and realize efficient starting more than the 800rpm, be lower than the upper pressure limit scope as high pressure accumulator 5 oil pressure, then adopt conventional electrical motor 3 startings.Vehicle hydraulic when starting, adopt hydraulic pump/motor 12 powered vehicle, after the speed of a motor vehicle reaches change-speed box and can directly hang third gear, convert to combustion engine 2 separately or machine hydraulic hybrid type power powered vehicle travel; Be in the low pressure limit scope as high pressure accumulator 5 oil pressure, then adopt combustion engine 2 independent drive vehicle starts.At vehicle low speed, the underload driving cycle, hybrid power ECU (Electrical Control Unit) 9 sends instruction to internal-combustion engine electronic control unit 1, with the extremely efficient work area of combustion engine 2 tunings, unnecessary combustion engine energy drives hydraulic pump/motor 12 is the low pressure oil in the low pressure accumulator 13, pump is stored in high pressure accumulator 5, oil pressure in high pressure accumulator 5 reaches the upper pressure limit scope, hybrid power ECU (Electrical Control Unit) 9 is sent combustion engine control signal i to internal-combustion engine electronic control unit 1, close combustion engine 2, hybrid power ECU (Electrical Control Unit) 9 is sent control command f, e, d makes hydraulic pump/motor 12 be in the motor operating mode, two position three-way valve A4 is in on-state p4, and two position three-way valve B8 is in on-state p1, and the hydraulic oil driving hydraulic pump/motor 12 that is stored in the high pressure accumulator 5 travels by power-transfer clutch 11 and change-speed box 10 powered vehicle; Oil pressure in high pressure accumulator 5 is reduced to the low pressure limit scope, and again by hydraulic pump/motor 12 cranking internal combustion engines 2, so circulation is carried out.When vehicle is in the high speed driving cycle, then travel separately or with hydraulic pump/motor 12 associating powered vehicle by combustion engine 2.When stepping on the brake pedal brake, in the play motion stage of brake pedal, hybrid power ECU (Electrical Control Unit) 9 is sent control command makes hydraulic pump/motor 12 be in the pump operating mode, two position three-way valve A4 is in on-state p4, two position three-way valve B8 is in off-state p2, realizes that by hydraulic pump/motor 12 hydraulic pressure of braking energy can reclaim.
Energy-conservation and emission reduction effect of the present invention is embodied in:
The internal-combustion engine rotational speed of machine hydraulic hybrid type power system vehicle and the speed of vehicle no longer are the speed ratios of fixing, and combustion engine often is operated in efficiently, Low Emission Zone thereby can make.At vehicle low speed, running on the lower load, adopt combustion engine controlled flame-out and hydraulic pump/motor reclaims braking energy and the hydraulic pump/motor cranking internal combustion engine can significantly improve the heat efficiency of combustion engine and reduce discharging.When vehicle parking, adopt the flame-out fuel-economizing of combustion engine or make combustion engine be in the consumption minimization work area, change-speed box is in Neutral Position, utilize unnecessary combustion engine horsepower output to drive hydraulic pump/motor the low pressure oil in the low pressure accumulator is pumped into the high pressure accumulator storage, so that can adopt hydraulic pump/motor cranking internal combustion engine or powered vehicle starting once more.Controlled flame-out and make combustion engine often be in the operation of low oil consumption district by combustion engine, can in fuel-economizing, significantly reduce discharging.
Engine starting
Rotate car key to the starting ignition position, power-transfer clutch 11 combinations, change-speed box 10 is put neutral gear.Hybrid power ECU (Electrical Control Unit) 9 receives engine starting key signal c and high pressure accumulator pressure signal g, as judge that the pressure in the high pressure accumulator 5 is lower than the low pressure limit scope, then send actuating motor control signal j, drive flywheel by self-starting motor 3 and rotate, realize the motor starting of combustion engine; As judge that pressure in the high pressure accumulator 5 is in or is higher than the low pressure limit scope, hybrid power ECU (Electrical Control Unit) 9 is sent control command d to pump/motor discharge capacity electrofluidic control device 14 makes hydraulic pump/motor 12 be in the motor operating mode, send control command e, f makes two position three-way valve A4 be in on-state p4, two position three-way valve B8 is in on-state p1, the hydraulic oil that is stored in the high pressure accumulator 5 drives hydraulic pump/motor 12 high speed rotating, realizes the starting of combustion engine hydraulic pump/motor.Electric motor starting can only drag to combustion engine and promptly begin igniting about 250rpm, and this moment, the fuel charge of combustion engine was more than 2-5 a times of normal amount, and the mixed air overrich causes oil consumption and discharging too high; Hydraulic pump/motor then can drag to combustion engine 800rpm with top starting point fire, this moment, the fuel charge of combustion engine was about 1 times of normal amount, mixed air can reduce the starting oil consumption significantly and efficiently transform engine exhaust by Catalyst near theoretical air/fuel ratio.
Hybrid power ECU (Electrical Control Unit) 9 receives engine starting key signal c and high pressure accumulator pressure signal g, as judge that the pressure in the high pressure accumulator 5 reaches the upper pressure limit scope, then combustion engine 2 is inoperative, and after receiving acceleration pedal position signal b, adopt hydraulic pump/motor 12 direct drive vehicle starts.
Vehicle start
Vehicle start is divided into combustion engine starting and 2 kinds of operating modes of hydraulic pump/motor starting.Hybrid power ECU (Electrical Control Unit) 9 judges that according to starting key signal c and acceleration pedal position signal b etc. vehicle is in the starting state.During as vehicle start, combustion engine 2 is in running order, then utilizes combustion engine powered realization vehicle start; Reach the upper pressure limit scope as the oil pressure in this moment high pressure accumulator 5, then close combustion engine, adopt hydraulic pump/motor 12 startings.
Combustion engine powered starting
During vehicle start, unclamp hand brake, power-transfer clutch 11 combinations, change-speed box 10 is put one grade.The power of combustion engine 2 passes to diff, semiaxis and wheel by hydraulic pump/motor 12, power-transfer clutch 11 and change-speed box 10, realizes the internal combustion engine drive starting of vehicle.At this moment, hybrid power ECU (Electrical Control Unit) 9 is sent control command d to pump/motor discharge capacity electrofluidic control device 14, and to make the swash plate angle of hydraulic pump/motor 12 be zero degree, is in unloaded state.
The starting of hydraulic pump/motor power
During vehicle start, unclamp hand brake, power-transfer clutch 11 combinations, change-speed box 10 is put one grade.Hybrid power ECU (Electrical Control Unit) 9 judges that according to the signal g from oil pressure sensor 6 oil pressure in the high pressure accumulator 5 reaches the upper pressure limit scope, then send the increment rate that control command d makes hydraulic pump/motor 12 be in the motor operating mode and determines the swash plate angle according to the rate of change of acceleration pedal position signal b to pump/motor discharge capacity electrofluidic control device 14, hydraulic pump/motor power passes to diff, semiaxis and wheel by power-transfer clutch 11 and change-speed box 10, realizes the steady hydraulic pump/motor starting of vehicle.
Vehicle low speed, underload travel
At vehicle low speed, underload driving cycle, hybrid power ECU (Electrical Control Unit) 9 sends instruction to internal-combustion engine electronic control unit 1, with the extremely efficient work area of combustion engine 2 tunings, unnecessary combustion engine energy drives hydraulic pump/motor 12 is the low pressure oil in the low pressure accumulator 13, pump is stored in high pressure accumulator 5, when the oil pressure of high pressure accumulator 5 reaches the upper pressure limit scope, close combustion engine 2.Hybrid power ECU (Electrical Control Unit) 9 is sent control command f, e, d makes hydraulic pump/motor 12 be in the motor operating mode, two position three-way valve A4 is in on-state p4, two position three-way valve B8 is in on-state p1, the hydraulic oil that is stored in the high pressure accumulator 5 drives hydraulic pump/motor 12, travels by power-transfer clutch 11 and change-speed box 10 powered vehicle; Oil pressure in high pressure accumulator 5 is reduced to the low pressure limit scope, and again by hydraulic pump/motor 12 cranking internal combustion engines 2, so circulation is carried out.
Vehicle gives it the gun
Vehicle quickens to be divided into combustion engine acceleration and combustion engine and hydraulic pump/motor hybrid power and quickens 2 kinds of operating modes.Hybrid power ECU (Electrical Control Unit) 9 judges that according to acceleration pedal position signal b vehicle is in acceleration mode.When quickening as vehicle, oil pressure in the high pressure accumulator 15 is in the low pressure limit scope, then utilize the combustion engine powered vehicle that makes to quicken, the power of combustion engine 2 passes to diff, semiaxis and wheel by hydraulic pump/motor 12, power-transfer clutch 11 and the change-speed box 10 that is in unloaded state, realizes that the combustion engine of vehicle quickens.Reach the upper pressure limit scope as the oil pressure in this moment high pressure accumulator 5, then adopt combustion engine and hydraulic pump/motor hybrid power to quicken.Hybrid power ECU (Electrical Control Unit) 9 is sent the increment rate that control command d makes hydraulic pump/motor 12 be in the motor operating mode and determines the swash plate angle according to the rate of change of acceleration pedal position signal b to pump/motor discharge capacity electrofluidic control device 14.At this moment, the power of combustion engine 2 and hydraulic pump/motor 12 passes to diff, semiaxis and wheel by power-transfer clutch 11 and change-speed box 10, realizes that the combustion engine of vehicle and hydraulic pump/motor hybrid power quicken.When vehicle quickened, change-speed box can be hung into top grade gradually.
The vehicle high speed is travelled
When vehicle is in the high speed driving cycle, then travel the similar 3.5.4 of control process separately or with hydraulic pump/motor 12 associating powered vehicle by combustion engine 2.
Car retardation travels
Car retardation travels and is divided into slide, slow down slowly (frequent slow the stopping in the urban district that blocks up) and fast (sudden stop) the 3 kinds of operating modes of slowing down.Hybrid power ECU (Electrical Control Unit) 9 judges that according to brake pedal position signal a and acceleration pedal position signal b vehicle is in the Reduced Speed Now state, judges that according to the acceleration/accel of brake pedal position signal vehicle is in deceleration slowly or fast deceleration regime.When vehicle was in sliding state, acceleration pedal and brake pedal all were in releasing orientation, will utilize this moment the kinetic energy that travels of vehicle to realize long as far as possible coasting distance, and hydraulic efficiency pressure system does not reclaim and slides energy.When vehicle is in slow deceleration regime, release the gas pedal, slowly step on brake pedal, in the play motion stage of brake pedal, utilize hydraulic efficiency pressure system to reclaim vehicle energy, realize that vehicle tentatively slows down, the deceleration intensity that needs as out of reach still then realizes that in the forced stroke of the pedal mechanical braking sytem by vehicle vehicle faster brakes.When vehicle is in fast deceleration regime, need make car retardation even parking rapidly, must step on brake pedal this moment rapidly, make brake pedal enter forced stroke rapidly, realize the vehicle snap catch, at the play motion of this braking procedure, hydraulic pump/motor adopts big swash plate angle to reclaim braking energy fast and realizes that with mechanical braking sytem snap catch stops.
Vehicle slides
The vehicle coast period, brake pedal and acceleration pedal all are in releasing orientation.Hybrid power ECU (Electrical Control Unit) 9 judges that according to brake pedal position signal a and acceleration pedal position signal b vehicle is in sliding state.Hybrid power ECU (Electrical Control Unit) 9 is sent control command d to pump/motor discharge capacity electrofluidic control device 14, and to make the swash plate angle of hydraulic pump/motor 12 be zero degree, and pump/motor is in the overflow unloaded state, sends control command e and makes two position three-way valve A4 be in the p3 unloading position.Sliding in the process can be manual or automatically controlled combustion engine is flame-out, to realize fuel-economizing.
Vehicle slows down slowly
In the slow decelerating phase of vehicle, acceleration pedal is in releasing orientation, slowly steps on brake pedal.Hybrid power ECU (Electrical Control Unit) 9 judges that according to the rate of change of brake pedal position signal a vehicle is in slow deceleration regime.At the play motion of brake pedal, utilize hydraulic pump/motor to reclaim the kinetic energy that travels of vehicle.Hybrid power ECU (Electrical Control Unit) 9 is sent the increment rate that control command d makes hydraulic pump/motor 12 be in the pump operating mode and determines the swash plate angle according to the rate of change of brake pedal position signal a to pump/motor discharge capacity electrofluidic control device 14.At this moment, vehicle energy drives hydraulic pump/motor 12 by change-speed box 10 and power-transfer clutch 11 and rotates, and after the low pressure oil pressurization that is stored in the low pressure accumulator 13, pumps into high pressure accumulator 5 by hydraulic control one-way valve 7, realizes that the hydraulic pressure of braking energy can reclaim.
Vehicle slows down soon
In the fast decelerating phase of vehicle, acceleration pedal is in releasing orientation, steps on brake pedal rapidly.Hybrid power ECU (Electrical Control Unit) 9 judges that according to the rate of change of brake pedal position signal a vehicle is in fast deceleration regime.Hybrid power ECU (Electrical Control Unit) 9 is sent the increment rate that control command d makes hydraulic pump/motor 12 be in the pump operating mode and determines the swash plate angle according to the rate of change of brake pedal position signal a to pump/motor discharge capacity electrofluidic control device 14.At the braking play motion in fast decelerating phase of vehicle, hydraulic pump/motor adopts big swash plate angle to reclaim braking energy fast and realizes that with mechanical braking sytem snap catch stops.
Vehicle parking
When car brakeing was stopped, acceleration pedal was in releasing orientation, and brake pedal is in and unclamps or step on state, and change-speed box is put neutral gear.Hybrid power ECU (Electrical Control Unit) 9 sends to the vehicle speed signal that comprises the combustion engine status signal h of hybrid power ECU (Electrical Control Unit) 9 according to brake pedal position signal a, acceleration pedal position signal b with from internal-combustion engine electronic control unit 1, judges that vehicle is in dead ship condition.As the pressure sensor signal g of hybrid power ECU (Electrical Control Unit) 9 reception high pressure accumulators 5, judge that oil pressure reaches the upper pressure limit scope, then send flame-out instruction to internal-combustion engine electronic control unit 1, make combustion engine flame-out.Otherwise, hybrid power ECU (Electrical Control Unit) 9 sends instruction to internal-combustion engine electronic control unit 1, and to efficient work area, the combustion engine energy stores in the high pressure accumulator 5 by hydraulic pump/motor with combustion engine 2 tunings, oil pressure in high pressure accumulator 5 reaches the upper pressure limit scope, closes combustion engine 2.
Description of drawings
Among Fig. 1 structure of the present invention and the fundamental diagram figure 1, the internal-combustion engine electronic control unit; 2, combustion engine; 3, actuating motor; 4, two position three-way valve A; 5, high pressure accumulator; 6, pressure sensor; 7 hydraulic control one-way valves; 8, two position three-way valve B; 9, hybrid power ECU (Electrical Control Unit); 10, change-speed box; 11, power-transfer clutch; 12, hydraulic pump/motor; 13, low pressure accumulator; 14, pump/motor discharge capacity electrofluidic control device; 15, brake pedal position sensor; 16, accelerator pedal position sensor; 17, engine starting key position sensor; A, brake pedal position signal; B, acceleration pedal position signal; C, engine starting key position signal; D, hydraulic pump/motor control signal; E, two position three-way valve A4 control signal; F, two position three-way valve B8 control signal; G, high pressure accumulator 5 pressure signals; H, from the combustion engine status signal of internal-combustion engine electronic control unit 1; I, combustion engine control signal; J, actuating motor control signal.P3 two position three-way valve A4 unloading position; P4 two position three-way valve A4 control position; P1 two position three-way valve B8 control position; P2 two position three-way valve B8 open position;
The specific embodiment
A kind of machine hydraulic hybrid type power driving system and control method based on the present invention's proposition, the car that reaches state's 4 effluent standards to a 1.6L equipment hand-operated transmission is reequiped, the hydraulic pump/motor discharge capacity that adopts is 56mL/rpm, range of speed 0-3000rpm, rating horsepower 45KW.Remoulded car has carried out the oil consumption detection according to GB GB/T19233-2003 " light-duty vehicle fuel consumption test method ", has carried out discharging according to GB GB18352.3-2005 " light-duty vehicle pollutant emission limit and method of measurement " and has detected.Testing result shows that in the city operating mode, remoulded car is than former car fuel-economizing 30%, and is suitable with former car in the suburb operating mode.Conurbation and suburb operating mode, remoulded car is compared with former car, and remoulded car is than former car fuel-economizing 17%, CO
2Discharging has reduced by 16.6%, NO
xDischarging has reduced by 14.3%, and CO has reduced by 45.4%, and HC has reduced by 53.2%.
Above-mentioned complete vehicle test result shows, adopts machine hydraulic hybrid type power driving system provided by the invention, can realize self-propelled vehicle energy-conservation and reduction of discharging by a relatively large margin, and this technology will provide an otherwise effective technique approach for self-propelled vehicle reaches higher energy conservation standard.
Claims (2)
1, a kind of machine hydraulic hybrid type power driving system comprises, internal-combustion engine electronic control unit (1), combustion engine (2), actuating motor (3), change-speed box (10), power-transfer clutch (11), engine starting key position sensor (17); It is characterized in that also comprising two position three-way valve A (4), high pressure accumulator (5), pressure sensor (6), hydraulic control one-way valve (7), two position three-way valve B (8), hybrid power ECU (Electrical Control Unit) (9), hydraulic pump/motor (12), low pressure accumulator (13), pump/motor discharge capacity electrofluidic control device (14), brake pedal position sensor (15), accelerator pedal position sensor (16); A hydraulic pump/motor (12) is rigidly attached between combustion engine (2) and the power-transfer clutch (11), and the high pressure hydraulic fluid port of hydraulic pump/motor (12) links to each other with two position three-way valve A (4), and links to each other with high pressure accumulator (5) by hydraulic control one-way valve (7); The low pressure hydraulic fluid port of hydraulic pump/motor (12) links to each other with low pressure accumulator (13); Hydraulic pump/motor (12) also links to each other with hydraulic control one-way valve (7) by two position three-way valve B (8); The pressure sensor (6) of high pressure accumulator (5), brake pedal position sensor (15), accelerator pedal position sensor (16) and engine starting key position sensor (17) are connected with hybrid power control unit (9) by cable; Hybrid power control unit (9) connects hydraulic pump/motor (12) by pump/motor discharge capacity electrofluidic control device (14).
2, the control method of a kind of machine hydraulic hybrid type power driving system according to claim 1, it is characterized in that, hybrid power control unit (9) sends two position three-way valve B (8) control signal (f) makes two position three-way valve B (8) be in control position, sending two position three-way valve A (4) control signal (e) makes two position three-way valve A (4) when being in control position, this moment, the high pressure oil from high pressure accumulator (5) flowed to hydraulic control one-way valve (7) through two position three-way valve B (8), make hydraulic control one-way valve (7) reverse opening, cause high pressure oil to flow into hydraulic pump/motor (12) by two position three-way valve A (4) from high pressure accumulator (5), drive hydraulic pump/motor (12) and press the work of motor operating mode, hydraulic pump/motor (12) power passes to change-speed box (10) powered vehicle by power-transfer clutch (11) and travels;
Two position three-way valve B (8) is when being in open position, and hydraulic control one-way valve (7) is oppositely closed, and the high pressure oil that is stored in high pressure accumulator (5) can't flow into hydraulic pump/motor (12); As two position three-way valve A (4) when being in unloading position, hydraulic pump/motor (12) is in unloaded state; Hybrid power control unit (9) sends two position three-way valve B (8) control signal (f) makes two position three-way valve B (8) be in open position, sending two position three-way valve A (4) control signal (e) makes two position three-way valve A (4) when being in control position, vehicle inertia kinetic energy drives hydraulic pump/motor (12) and rotates by change-speed box (10), power-transfer clutch (11), drive hydraulic pump/motor (12) and press the work of pump operating mode, the high pressure oil that pumps enters high pressure accumulator (5) storage by two position three-way valve A (4) and hydraulic control one-way valve (7); Hybrid power control unit (9) receives pressure signal (g) from high pressure accumulator pressure sensor (6), acceleration pedal position signal (a), brake pedal position signal (b), engine starting key signal (c) and from the combustion engine status signal (h) of internal-combustion engine electronic control unit (1), sends electric motor starting control signal (j), hydraulic pump/motor control signal (d), two position three-way valve A (4) control signal (e), two position three-way valve B (8) control signal (f) and combustion engine control signal (i).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910092577A CN101654060A (en) | 2009-09-11 | 2009-09-11 | Mechanic and hydraulic hybrid type power transmission system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910092577A CN101654060A (en) | 2009-09-11 | 2009-09-11 | Mechanic and hydraulic hybrid type power transmission system and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101654060A true CN101654060A (en) | 2010-02-24 |
Family
ID=41708591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910092577A Pending CN101654060A (en) | 2009-09-11 | 2009-09-11 | Mechanic and hydraulic hybrid type power transmission system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101654060A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019842A (en) * | 2010-11-26 | 2011-04-20 | 北京工业大学 | Hydraulic hybrid electric vehicle transmission system and control method thereof |
| CN102029888A (en) * | 2010-11-26 | 2011-04-27 | 北京工业大学 | Power system for mechanical-electrical-liquid hybrid-driven vehicle and control method thereof |
| CN102795221A (en) * | 2012-08-01 | 2012-11-28 | 江苏大学 | Electric vehicle electric-hydraulic hybrid driving system and control method thereof |
| CN102922981A (en) * | 2012-10-29 | 2013-02-13 | 长城汽车股份有限公司 | Hybrid power drive device and vehicle |
| CN103476651A (en) * | 2011-04-21 | 2013-12-25 | 丰田自动车株式会社 | Control device for vehicle driving device |
| CN103693034A (en) * | 2013-07-15 | 2014-04-02 | 南京工程学院 | Electro-hydraulic proportional valve control pump/motor hydraulic power assisted system of electric automobile |
| CN103950389A (en) * | 2014-01-20 | 2014-07-30 | 南京工程学院 | Electric vehicle hydraulic control pump/motor power assisting system |
| CN105443509A (en) * | 2015-12-31 | 2016-03-30 | 浙江省送变电工程公司 | Portable vehicle oil line circulating device and working method thereof |
| CN105620262A (en) * | 2015-07-30 | 2016-06-01 | 青岛理工大学 | Fuel cell hydraulic hybrid power system and control method thereof |
| CN106740083A (en) * | 2016-12-19 | 2017-05-31 | 长安大学 | A kind of propons assistant drive system of dumper |
| CN112963394A (en) * | 2021-03-03 | 2021-06-15 | 三一重机有限公司 | Engineering machine and control method |
-
2009
- 2009-09-11 CN CN200910092577A patent/CN101654060A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102029888A (en) * | 2010-11-26 | 2011-04-27 | 北京工业大学 | Power system for mechanical-electrical-liquid hybrid-driven vehicle and control method thereof |
| CN102019842A (en) * | 2010-11-26 | 2011-04-20 | 北京工业大学 | Hydraulic hybrid electric vehicle transmission system and control method thereof |
| CN103476651A (en) * | 2011-04-21 | 2013-12-25 | 丰田自动车株式会社 | Control device for vehicle driving device |
| CN103476651B (en) * | 2011-04-21 | 2015-12-16 | 丰田自动车株式会社 | The control setup of vehicle driving apparatus |
| CN102795221B (en) * | 2012-08-01 | 2015-06-10 | 江苏大学 | Electric vehicle electric-hydraulic hybrid driving system and control method thereof |
| CN102795221A (en) * | 2012-08-01 | 2012-11-28 | 江苏大学 | Electric vehicle electric-hydraulic hybrid driving system and control method thereof |
| CN102922981B (en) * | 2012-10-29 | 2015-06-03 | 长城汽车股份有限公司 | Hybrid power drive device and vehicle |
| CN102922981A (en) * | 2012-10-29 | 2013-02-13 | 长城汽车股份有限公司 | Hybrid power drive device and vehicle |
| CN103693034A (en) * | 2013-07-15 | 2014-04-02 | 南京工程学院 | Electro-hydraulic proportional valve control pump/motor hydraulic power assisted system of electric automobile |
| CN103950389A (en) * | 2014-01-20 | 2014-07-30 | 南京工程学院 | Electric vehicle hydraulic control pump/motor power assisting system |
| CN103950389B (en) * | 2014-01-20 | 2016-02-10 | 南京工程学院 | Electronlmobil hydraulic control pump/motor force aid system |
| CN105620262A (en) * | 2015-07-30 | 2016-06-01 | 青岛理工大学 | Fuel cell hydraulic hybrid power system and control method thereof |
| CN105443509A (en) * | 2015-12-31 | 2016-03-30 | 浙江省送变电工程公司 | Portable vehicle oil line circulating device and working method thereof |
| CN105443509B (en) * | 2015-12-31 | 2018-10-16 | 浙江省送变电工程公司 | A kind of portable vehicle oil circulation device and its working method |
| CN106740083A (en) * | 2016-12-19 | 2017-05-31 | 长安大学 | A kind of propons assistant drive system of dumper |
| CN112963394A (en) * | 2021-03-03 | 2021-06-15 | 三一重机有限公司 | Engineering machine and control method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101654060A (en) | Mechanic and hydraulic hybrid type power transmission system and control method | |
| CN101037087A (en) | mix-driving and energy-saving device of continuously variable motor vehicle | |
| CN101875296B (en) | Motor vehicle driven by mixed power and control method | |
| CN103552454B (en) | Series parallel type hydraulic hybrid vehicle power assembly system | |
| CN104583561B (en) | Supercharger assembly | |
| CN1647966A (en) | Parallel connection mixed power driving system and its driving method | |
| CN103863315B (en) | Adjust the method and system of the operating of the lock-up clutch of hybrid vehicle transmission torque-converters | |
| CN101811443B (en) | Automobile braking energy regeneration control system | |
| CN1394273A (en) | Hydraulic hybrid vehicle | |
| CN100999184A (en) | Rear driven mixed power vehicle of motor hydraulic device connection type | |
| CN101939185A (en) | Air hybrid vehicle | |
| CN102815198A (en) | HEV (Hybrid Electric Vehicle) driving system based on CVT (Continuously Variable Transmission) | |
| CN101913320A (en) | Pressure hybrid power transmission system and control method | |
| CN203094026U (en) | Automobile braking energy recycling device | |
| CN101332775A (en) | Hydraulic accumulation energy type autobus brake energy regeneration system | |
| CN101209663A (en) | Power system for composite cycle vehicle | |
| CN210101309U (en) | Hybrid power driving system and vehicle | |
| CN106891711A (en) | Load series-parallel machine hydraulic hybrid control system and control method | |
| CN201472134U (en) | Mechanic-hydraulic hybrid power driven system | |
| CN101665069B (en) | On-vehicle self-contained air-conditioning system of electric automobiles | |
| JP6091169B2 (en) | Vehicle control device | |
| CN102582410B (en) | Multifunctional dual energy-saving emission-reducing apparatus | |
| JP2016175495A (en) | Hybrid vehicle and control method therefor | |
| CN102774263A (en) | Control method of hybrid power driving system | |
| JP2016094161A (en) | Vehicle control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100224 |