CN207433509U - A kind of air-pressure brake energy-recuperation system - Google Patents
A kind of air-pressure brake energy-recuperation system Download PDFInfo
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- CN207433509U CN207433509U CN201721535589.0U CN201721535589U CN207433509U CN 207433509 U CN207433509 U CN 207433509U CN 201721535589 U CN201721535589 U CN 201721535589U CN 207433509 U CN207433509 U CN 207433509U
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Abstract
The utility model discloses a kind of air-pressure brake energy-recuperation system, overcome the prior art there are problems that electromagnetism valve regulation can lose partial gas pressure, control difficulty greatly with reduced service life；It includes high-pressure air source device, air pressure regulator, braking executive device and brake power recovering device.High-pressure air source device includes four-loop protection valve (10), the dry gas receiver of rear axle (11) and the dry gas receiver of front axle (25)；Air pressure regulator includes hand-operated valve (9), rear axle failure pressure sensor (26), front axle failure pressure sensor (27), front axle threeway (31) and rear axle threeway (34)；Braking executive device includes the near front wheel brake chamber (2), off-front wheel brake chamber (5), off hind wheel brake chamber (19) and left rear wheel brake chamber (22)；Brake power recovering device is mounted on preceding bridge and rear axle；It is connected between high-pressure air source device, air pressure regulator and braking executive device using pneumatic circuit.
Description
Technical field
The utility model is related to belong to a kind of retracting device of Recovering Waste Energy of Braking in Automobiles technical field, more precisely,
The utility model is related to a kind of air-pressure brake energy-recuperation systems.
Background technology
Automobile can receive the frequent braking instruction from driver during the work time.Braking instruction is performed in automobile
During, it is necessary to brake to automobile apply a torque opposite with the direction of motion with offset as early as possible automobile advance be used to
Property, and automobile has just turned to thermal energy to the work(that brake is done and has been lost.It is right in order to improve the utilization rate of energy with energy saving
The energy lost during automobile brake is recycled and using just seeming particularly necessary.Method more general at present is by solid
The energy storage that fixed device will should lose during automobile brake, then this portion of energy is used for automobile in running car
Driving, and this technology is exactly Brake energy recovery technology.
For existing air-pressure brake energy-recuperation system, generally using ABS (anti-lock braking system) solenoid valve
It realizes and the pressure of each brake chamber is controlled, but but there is problems with for this kind of mode：
(1) ABS solenoid valves are larger to the difficulty of brake pressure progress Linear Control, and the adjusting of ABS solenoid valves can make
Partial gas pressure loses；
(2) carrying of brake energy recovering system cannot influence the ABS functions of former vehicle, this just need with ABS manufacturers into
Row is developed jointly, and controls difficulty big；
(3) ABS solenoid valves in itself and are not suitable with frequent operation, can be due to frequent when it is applied to Brake energy recovery
Opening and closing demand cause its reduced service life.
Chinese patent bulletin (cloth) number is 106627535A, and bulletin (cloth) day is 2017-05-10, entitled one kind
The patent of invention of air-pressure brake energy-recuperation system, which proposes, a kind of has the function of the Pneumatic braking system of active brake and control
Method realizes active brake function by installing traction control system additional, however it must be pressed braking by ABS system
Power is controlled, and control strategy is complicated and realizes that difficulty is big.
The content of the invention
Technical problem to be solved in the utility model is to overcome air-pressure brake energy regenerating system existing in the prior art
System coordinates the problem of control difficulty is big, structure is excessively complicated and pressure control excessively relies on ABS system, provides a kind of air pressure
Brake energy recovering system.
In order to solve the above technical problems, the utility model adopts the following technical scheme that realization：A kind of air pressure
Brake energy recovering system includes high-pressure air source device, air pressure regulator, braking executive device and brake power recovering device；
The high-pressure air source device includes four-loop protection valve, the dry gas receiver of rear axle and the dry gas receiver of front axle；
The air pressure regulator includes hand-operated valve, quick release valve, rear axle failure pressure sensor, front axle failure pressure and passes
Sensor, front axle threeway and rear axle threeway (34)；
The braking executive device include the near front wheel brake chamber, off-front wheel brake chamber, off hind wheel brake chamber with
Left rear wheel brake chamber；
1 gas outlet of the four-loop protection valve and a port tubes of hand-operated valve connect, and the dry gas receiver of rear axle is with before
The gas outlet of the dry gas receiver of axis and rear axle failure pressure sensor are connected with front axle failure pressure sensor pipeline；Quick release valve two
Pneumatic circuit is respectively adopted for outlet side and off hind wheel brake chamber is connected with the ante-chamber of left rear wheel brake chamber, the b of front axle threeway
Port is respectively adopted pneumatic circuit and the near front wheel brake chamber with c ports and is connected with a ports of off-front wheel brake chamber, rear axle three
Logical b ports are respectively adopted pneumatic circuit and left rear wheel brake chamber with c ports and are connected with a ports of off hind wheel brake chamber；
Before the brake power recovering device is fixedly mounted on bridge and rear axle.
High-pressure air source device described in technical solution further includes air pump, unloading valve and wet gas receiver；The air pump leads to
It crosses unloading valve to be connected using pneumatic circuit with the inlet end of wet gas receiver, the outlet side of wet gas receiver uses pneumatic circuit and four times
The inlet end of road protection valve is attached, and pneumatic circuit is respectively adopted for the another two outlet side of four-loop protection valve and rear axle does storage
Inflator is connected with the inlet end of the dry gas receiver of front axle.
Air pressure regulator described in technical solution further includes brake pedal displacement sensor, brake pedal, rear axle pressure
Force regulating valve, front axle failure circuit threeway, fail safe electrically-controlled valve, brake valve, front axle pressure-regulating valve, rear axle failure circuit three
Logical, front axle pressure sensor and rear axle pressure sensor；One end of the rear axle failure pressure sensor and brake valve it is upper
Chamber arrival end is connected using pneumatic circuit, and one end of front axle failure pressure sensor and the cavity of resorption arrival end of brake valve use air pressure
Pipeline connects, the cavity of resorption port of export of brake valve and the epicoele port of export respectively with front axle pressure-regulating valve and rear axle pressure-regulating valve
Arrival end is connected using pneumatic circuit, and pneumatic circuit is respectively adopted in front axle pressure-regulating valve and the port of export of rear axle pressure-regulating valve
It is connected with a ports of front axle failure circuit threeway with a ports of rear axle failure circuit threeway；The p ports of fail safe electrically-controlled valve
It is connected with the b ports of front axle failure circuit threeway using pneumatic circuit, q ports and the rear axle failure circuit of fail safe electrically-controlled valve
The b ports of threeway are connected using pneumatic circuit；Front axle pressure sensor is mounted on c ports and the front axle of front axle failure circuit threeway
On pneumatic circuit between a ports of threeway；Rear axle pressure sensor is mounted on c ports and the rear axle of rear axle failure circuit threeway
On pneumatic circuit between a ports of threeway, the b ports of hand-operated valve and one end of quick release valve are connected using pneumatic circuit, braking
Pedal displacement sensor is mounted on brake pedal, and brake pedal is mounted on brake valve.
Bridge on rear axle with referring to before brake power recovering device described in technical solution is fixedly mounted on：Braking energy returns
Receiving apparatus includes preceding spindle motor, rear spindle motor, front axle differential and rear axle differential；The front axle differential and preceding spindle motor
Mechanical connection, rear axle differential be connected with rear axle electromechanics, front axle differential and rear axle differential respectively with front axle half shaft and
Rear axle shaft is mechanically connected.
Braking executive device described in technical solution further include the near front wheel wheel speed sensors, off-front wheel wheel speed sensors,
Off hind wheel wheel speed sensors and left rear wheel wheel speed sensors；The near front wheel brake chamber, off-front wheel brake chamber, off hind wheel
Brake chamber and left rear wheel brake chamber using combined type spring brake chamber and respectively with the near front wheel, off-front wheel, off hind wheel,
Brake on left rear wheel is mechanically connected；The near front wheel wheel speed sensors of each wheel wheel speed signal of acquisition, the right side
After front-wheel wheel speed sensors, off hind wheel wheel speed sensors and left rear wheel wheel speed sensors are separately mounted to the near front wheel, off-front wheel, the right side
On wheel and left rear wheel.
The beneficial effects of the utility model are compared with prior art：
1. a kind of air-pressure brake energy-recuperation system described in the utility model is conducive to be promoted the capacity usage ratio of vehicle,
Can the energy that should be lost in automobile brake on the brake be recycled and utilized.
2. a kind of air-pressure brake energy-recuperation system described in the utility model can ensure the original braking effect of automobile
It is constant.
3. a kind of air-pressure brake energy-recuperation system described in the utility model is by using the electricity for more adapting to frequent operation
The pressure control of brake circuit, obtains the braking energy than being decoupled using ABS solenoid valves to pressure before and after magnet valve carries out
The higher reliability of recovery system.
4. a kind of air-pressure brake energy-recuperation system described in the utility model is simple in structure, identical braking energy is being realized
Arrangement and cost-effective is more advantageous on the premise of recycling function.
5. a kind of air-pressure brake energy-recuperation system control method described in the utility model is simple, without the concern for working as
ABS functions trigger when motor braking power escape mechanism and motor braking power exit after brake chamber pressure Preserving problems.
Description of the drawings
The utility model will be further described below with reference to the accompanying drawings：
Fig. 1 is a kind of schematic block diagram of the structure composition of air-pressure brake energy-recuperation system described in the utility model；
Fig. 2 is a kind of FB(flow block) of the control method of air-pressure brake energy-recuperation system described in the utility model.
Fig. 3 is the operator brake in a kind of control method of air-pressure brake energy-recuperation system described in the utility model
The control flow block diagram of intention assessment module.
In figure：1. the near front wheel wheel speed sensors, 2. the near front wheel brake chambers, spindle motor before 3., 4. front axle differentials, 5. is right
Front wheel brake gas chamber, 6. off-front wheel wheel speed sensors, 7. air pumps, 8. unloading valves, 9. hand-operated valves, 10. four-loop protection valves, 11.
The dry gas receiver of rear axle, 12. brake pedal displacement sensors, 13. brake pedals, 14. rear axle pressure-regulating valves, the failure of 15. front axles
Circuit threeway, 16. fail safe electrically-controlled valves, 17. quick release valves, 18. off hind wheel wheel speed sensors, 19. off hind wheel brake chambers,
Spindle motor after 20., 21. rear axle differentials, 22. left rear wheel brake chambers, 23. left rear wheel wheel speed sensors, 24. wet gas receivers,
25. the dry gas receiver of front axle, 26. rear axle failure pressure sensors, 27. front axle failure pressure sensors, 28. brake valves, 29. front axles
Pressure-regulating valve, the failure circuit threeway of 30. rear axles, 31. front axle threeways, 32. front axle pressure sensors, 33. rear axle pressure sensings
Device, 34. rear axle threeways.
Specific embodiment
The utility model is explained in detail below in conjunction with the accompanying drawings：
Refering to Fig. 1, a kind of air-pressure brake energy-recuperation system include high-pressure air source device, air pressure regulator,
Braking executive device and brake power recovering device.
The high-pressure air source device, which includes air pump 7, unloading valve 8, wet gas receiver 24, four-loop protection valve 10, rear axle, to be done
The dry gas receiver 25 of gas receiver 11, front axle.The high-pressure air source device provides high pressure for entire air-pressure brake energy-recuperation system
Source of the gas,
The air pump 7 is automobile-used high-pressure pump, and wet gas storage is stored in for outside air to be compressed into after gases at high pressure
In cylinder 24.
The wet gas receiver 24 uses stainless steel gas receiver, can be on the basis of the gases at high pressure that storage air pump 7 provides
Further the moisture in gases at high pressure is filtered.
Gas pressure in wet gas receiver 24 can be limited in below a fixed value by the unloading valve 8.
The four-loop protection valve 10 can guarantee when single brake circuit fails other circuits after continuing pressure.
The dry 11 aluminium alloy gas receiver of gas receiver of the dry gas receiver 25 of the front axle, rear axle is respectively intended to storage axle
High-pressure brake gas.
The air pressure regulator includes hand-operated valve 9, brake pedal displacement sensor 12, brake pedal 13, rear axle pressure
Force regulating valve 14, front axle failure circuit threeway 15, fail safe electrically-controlled valve 16, quick release valve 17, rear axle failure pressure sensor 26,
Front axle failure pressure sensor 27, brake valve 28, front axle pressure-regulating valve 29, rear axle failure circuit threeway 30, front axle threeway 31,
Front axle pressure sensor 32, rear axle pressure sensor 33, rear axle threeway 34.Air pressure regulator is braked for adjusting axle
Pressure.
The brake pedal displacement sensor 12 uses the stay-supported type displacement sensor of ASM company CLM series, for adopting
Collect the displacement information of brake pedal 13；
The brake pedal 13 is intended to for driver's input brake；
The brake valve 28 is double series-wound chambers air brake valve, and its upper part plunger cap promotes cylinder body inner carrier by spring
It realizes the control of valve port opening and closing, adjusting can be carried out at the same time to the air pressure of axle；
The front axle pressure sensor 32 is detecting front axle failure circuit threeway 15 to the gas between front axle threeway 31
Body pressure；
The rear axle pressure sensor 33 is detecting rear axle failure circuit threeway 30 to the gas between rear axle threeway 34
Body pressure；
The front axle failure pressure sensor 27 is arrived to detect the dry gas receiver 25 of front axle between 28 cavity of resorption of brake valve
Gas pressure；
The rear axle failure pressure sensor 26 is arrived to detect the dry gas receiver 11 of rear axle between 28 epicoele of brake valve
Gas pressure；
Front axle pressure sensor 32, rear axle pressure sensor 33, front axle failure pressure sensor 27 and the rear axle mistake
Pressure sensor 26 is imitated using the baroceptor of BOSCH companies production.
The front axle pressure-regulating valve 29, rear axle pressure-regulating valve 14 are using electric-controlled switch valve, by receiving vehicle
The signal control axle brake circuit that controller is sent builds pressure.
The fail safe electrically-controlled valve 16 uses electric-controlled switch valve, when a brake circuit cannot build pressure by another
Brake circuit carries out pressure compensation to it.
The hand-operated valve 9 is applying or release parking brake force.
Residual high pressure air when the quick release valve 17 is to discharge parking braking in brake chamber.
The front axle threeway 31, rear axle threeway 34, front axle failure circuit threeway 15, rear axle failure circuit threeway 30 use
The isometrical air pressure threeway of stainless steel, to change the flow direction of gases at high pressure.
The braking executive device includes the near front wheel brake chamber 2, off-front wheel brake chamber 5, off hind wheel brake chamber
19th, left rear wheel brake chamber 22, the near front wheel wheel speed sensors 1, off-front wheel wheel speed sensors 6, off hind wheel wheel speed sensors 18, a left side
Trailing wheel wheel speed sensors 23；Braking executive device is used to implement vehicle braking and obtains wheel wheel speed.
The near front wheel brake chamber 2, off-front wheel brake chamber 5 are the single-chamber spring for being used to implement vehicle driving braking
Brake chamber.
The off hind wheel brake chamber 19, left rear wheel brake chamber 22 is are used to implement vehicle driving braking and parking system
Dynamic two-chamber spring brake chamber.
The near front wheel wheel speed sensors 1, off-front wheel wheel speed sensors 6, off hind wheel wheel speed sensors 18, left rear wheel wheel
Fast sensor 23 is magneto-electric type wheel speed sensor, for obtaining the rotating speed of four wheels.
The brake power recovering device includes preceding spindle motor 3, rear spindle motor 20, front axle differential 4, rear axle differential
21.Brake power recovering device is used to recycle the energy that vehicle is lost in braking and driving wheel is allow to be turned with different rotating speeds
It is dynamic.
The preceding spindle motor 3 and rear spindle motor 20 are using permanent magnet synchronous motor, to realize braking energy recovering function.
The front axle differential 4 and rear axle differential 21 are using torsional differential gear, to realize that driving wheel is turned with difference
Power when speed rotates and brakes vehicle passes to preceding spindle motor 3 and rear spindle motor 20.
The specific connection relation of the air-pressure brake energy-recuperation system is as follows：
The near front wheel wheel speed sensors 1, off-front wheel wheel speed sensors 6, left rear wheel wheel speed sensors 23, off hind wheel wheel
Fast sensor 18 is separately mounted to the near front wheel, off-front wheel, left rear wheel, obtains on off hind wheel and respectively the wheel speed signal of each wheel
ω, ωiFor the wheel speed of i-th of wheel；The front axle pressure sensor 32 is mounted on the c ports of front axle failure circuit threeway 15 with before
On pneumatic circuit between a ports of axis threeway 31；The rear axle pressure sensor 33 is mounted on rear axle failure circuit threeway
On pneumatic circuit between 30 c ports and a ports of rear axle threeway 34；The brake pedal displacement sensor 12 is mounted on
On brake pedal 13；The rear axle failure pressure sensor 26 is mounted on the outlet side of the dry gas receiver 11 of rear axle to brake valve 28
Epicoele arrival end between pneumatic circuit on；Front axle failure pressure sensor 27 is mounted on the outlet side of the dry gas receiver 25 of front axle
Onto the pneumatic circuit between the cavity of resorption arrival end of brake valve 28.
The near front wheel brake chamber 2, off-front wheel brake chamber 5, off hind wheel brake chamber 19, left rear wheel brake chamber
22 is using combined type spring brake chamber and mechanical with the progress of the brake of the near front wheel, off-front wheel, left rear wheel, off hind wheel respectively
Connection.
The front axle differential 4 is mechanically connected with preceding spindle motor 3, and rear axle differential 21 connects with rear 20 machinery of spindle motor
It connects, wherein front axle differential 4 is mechanically connected with rear axle differential 21 with front axle half shaft and rear axle shaft respectively.
The air pump 7 is connected by unloading valve 8 with the inlet end of wet gas receiver 24 using pneumatic circuit；Described four times
The outlet side of the inlet end and wet gas receiver 24 of road protection valve 10 is attached using pneumatic circuit, and the three of four-loop protection valve 10
A outlet side uses pneumatic tube with the inlet end of a ports of hand-operated valve 9, the dry gas receiver 11 of rear axle, the dry gas receiver 25 of front axle respectively
Road is attached；The b ports of the hand-operated valve 9 and the inlet end of quick release valve 17 are attached using pneumatic circuit, quick release valve
17 two outlet sides are carried out respectively with the ante-chamber of off hind wheel brake chamber 19 and left rear wheel brake chamber 22 using pneumatic circuit
Connection.
The dry gas receiver 11 of the rear axle, the outlet side of the dry gas receiver 25 of front axle pass through rear axle failure pressure sensor respectively
26 are connected with the epicoele arrival end of front axle failure pressure sensor 27 and brake valve 28 with cavity of resorption arrival end using pneumatic circuit
It connects；The cavity of resorption port of export of brake valve 28 and the epicoele port of export respectively with front axle pressure-regulating valve 29, rear axle pressure-regulating valve 14
Arrival end is attached using pneumatic circuit；Front axle pressure-regulating valve 29, the port of export of rear axle pressure-regulating valve 14 are respectively adopted
The a ports of pneumatic circuit and front axle failure circuit threeway 15 and a ports of rear axle failure circuit threeway 30 are attached；Failure is protected
The p ports and the b ports of front axle failure circuit threeway 15 for protecting electrically-controlled valve 16 are attached using pneumatic circuit, and fail safe is automatically controlled
The q ports of valve 16 and the b ports of rear axle failure circuit threeway 30 are attached using pneumatic circuit；Front axle pressure sensor 32 is pacified
On pneumatic circuit between the c ports of front axle failure circuit threeway 15 and a ports of front axle threeway 31；I.e. front axle fails back
The c ports of road threeway 15 are connected by front axle pressure sensor 32 with a ports of front axle threeway 31 using pneumatic circuit；Rear axle pressure
Force snesor 33 is mounted on the pneumatic circuit between the c ports of rear axle failure circuit threeway 30 and a ports of rear axle threeway 34,
I.e. the c ports of rear axle failure circuit threeway 30 use pneumatic tube by a ports of rear axle pressure sensor 33 and rear axle threeway 34
Road connects；The b ports of front axle threeway 31 and c ports a ports with the near front wheel brake chamber 1 and off-front wheel brake chamber 5 respectively
It is attached using pneumatic circuit；The b ports and c ports of rear axle threeway 34 respectively with left rear wheel brake chamber 22 and off hind wheel system
The take offence a ports of room 19 are attached using pneumatic circuit；Brake pedal 13 is mechanically connected with brake valve 28；The b of hand-operated valve (9)
Port is connected with one end of quick release valve (17) using pneumatic circuit, and brake pedal displacement sensor (12) is mounted on brake pedal
(13) on, brake pedal (13) is mounted on the plunger cap on brake valve (28) top.
The course of work of the air-pressure brake energy-recuperation system is as follows：
The course of work of small intensity air-pressure brake energy-recuperation system：
Rear axle pressure-regulating valve 14, front axle pressure-regulating valve 27, fail safe electrically-controlled valve 16 are closed at this time, no
Rear axle applies mechanical braking force forward.Preceding spindle motor 3, rear spindle motor 19 are in running order and respectively forwardly axis, rear axle apply
Motor braking power.At the same time, the inertia of automobile can be changed into electric energy to Vehicular accumulator cell by preceding spindle motor 3, rear spindle motor 19
It charges to realize braking energy recovering function.
The course of work of big intensity air-pressure brake energy-recuperation system：
Rear axle pressure-regulating valve 13, front axle pressure-regulating valve 29 are in opening at this time, at fail safe electrically-controlled valve 16
In closed state, preceding spindle motor 3, rear spindle motor 20 are closed.Pressure-air in the dry gas receiver 25 of front axle is by outlet
The cavity of resorption inlet end flowing to brake valve 28 is held, the cavity of resorption that brake valve 28 carries out it on pressure-air from brake valve 28 after current limliting goes out
Gas end reaches the near front wheel brake chamber 2 and the right side by front axle pressure-regulating valve 29, front axle failure circuit threeway 15, front axle threeway 31
The a ports of front wheel brake gas chamber 5, and then brake force is applied to front axle by brake；High pressure in the dry gas receiver 11 of rear axle is empty
Epicoele inlet end flowing of the gas from outlet side to brake valve 28, brake valve 28 carry out it after current limliting pressure-air from brake valve 28
Epicoele outlet side by rear axle pressure-regulating valve 14, rear axle failure circuit threeway 30, rear axle threeway 34 reach left rear wheel braking
The a ports of gas chamber 22 and off hind wheel brake chamber 19, and then brake force is applied to rear axle by brake.
Slide the course of work of air-pressure brake energy-recuperation system：
Brake valve 28 is closed at this time.Without pressure-air, the near front wheel braking in antero posterior axis barometric brake circuit
Gas chamber 2, off-front wheel brake chamber 5, do not build pressure, antero posterior axis braking in left rear wheel brake chamber 22 at off hind wheel brake chamber 19
Device does not provide mechanical braking force.Preceding spindle motor 3 and rear spindle motor 20 are in opening and respectively forwardly rear axle applies motor system
Power, and then realize Brake energy recovery.
The course of work of parking air-pressure brake energy-recuperation system：
After holding brake device is by driver activation, the b ports of hand-operated valve 9 are directly connected with air, in quick release valve 17
The pressure-air of remaining is discharged to air via the b ports of hand-operated valve 9；Left rear wheel brake chamber 22, off hind wheel brake chamber 19
The pressure-air of middle remaining is also discharged into air via quick release valve 17, hand-operated valve 9.At the same time, left rear wheel brake chamber 22, the right side
Rear service brake gas chamber 19 applies rear brake brake force by the release of spring force, and then realizes parking braking.
Release the course of work of parking air-pressure brake energy-recuperation system：
After holding brake device is cancelled by the driver activation, the b ports of hand-operated valve 9 are connected with a ports, are stored in wet storage
Pressure-air in inflator 24 enters 19 and of off hind wheel brake chamber by four-loop protection valve 10, hand-operated valve 9, quick release valve 17
In the ante-chamber of left rear wheel brake chamber 22.Spring in brake chamber is pushed back, and makes parking braking status releasing.
The course of work of air-pressure brake energy-recuperation system under failure state：
Rear axle pressure-regulating valve 14, front axle pressure-regulating valve 29 are in opening at this time.If the circuit of brake fade
It is front axle brake circuit, then open failure protection electrically-controlled valve 16, pressure-air in the dry gas receiver 11 of rear axle is from outlet side to system
The epicoele inlet end flowing of dynamic valve 28, pressure-air is passed through from the epicoele outlet side of brake valve 28 after brake valve 28 carries out it current limliting
Later axis pressure-regulating valve 14 reach rear axle failure circuit threeway 30, which part pressure-air continue to rear axle brake chamber into
Row builds pressure, remaining pressure-air reaches left front via fail safe electrically-controlled valve 16, front axle failure circuit threeway 15, front axle threeway 31
The a ports of brake chamber 2 and off-front wheel brake chamber 5 are taken turns, and then mechanical braking force is applied to front axle by brake；If system
Dynamic failure circuit is rear axle brake circuit, then the pressure-air in the dry gas receiver 25 of front axle by fail safe electrically-controlled valve 16 to rear
Axis carries out pressure supplement, working mechanism when detailed process is with reference to front axle brake partial failure；If antero posterior axis loses machine simultaneously
Pressure can not be built in brake chamber by carrying out pressure compensation after tool brake force or uniaxial brake circuit failure, then preceding spindle motor 3, rear axle
Motor 20 is opened, and applying motor braking power to antero posterior axis makes vehicle slowly brake.
Refering to Fig. 2, a kind of control method of air-pressure brake energy-recuperation system, step is as follows：
1. whether detecting vehicle in sliding state, sliding brake function pattern is entered if in sliding state；
1) it is that the brake pedal displacement signal that receives to entire car controller and accelerator pedal displacement signal judge, if
Brake pedal displacement signal and accelerator pedal displacement signal are 0 and enter step b, if brake pedal displacement signal and acceleration are stepped on
Plate displacement signal not all enters step 2 for 0；
2) it is that the wheel speed signal collected using maximum wheel speed method by wheel speed sensors acquires vehicle current vehicle speed, speed
Calculating is shown below：
V={ ωi·r}max
Wherein v be speed, unit m/s；ωiFor the wheel speed of i-th of wheel, unit rad/s；R is the rolling half of wheel
Footpath, unit m.Rear axle pressure-regulating valve 14, front axle pressure-regulating valve 29, fail safe electrically-controlled valve 16 are disconnected if speed is 0
Electricity, system initialization, if speed is not 0, into sliding brake function operating mode；
2. detect whether vehicle is in on-position；
1) whether detection vehicle is judged in on-position by brake pedal displacement and accelerator pedal displacement, if braking
Pedal displacement dBraking>0 and accelerator pedal displacement dAccelerate=0, then enter step 3；
2) rear axle pressure-regulating valve 14, front axle pressure-regulating valve 29, fail safe electricity if above-mentioned decision condition is not met
Control valve 16 powers off, system initialization；
3. detect vehicle whether brake fade, if brake fade enter brake fade pattern；
1) judged by the way that whether antero posterior axis brake circuit normally builds pressure, if front axle brake loop gas pressure Pf>0 and
Rear axle brake circuit gas pressure Pr>0 enters step 4；
2) brake fade pattern is entered if above-mentioned condition is not met；
4. judge whether into parking braking pattern or release parking braking pattern；
1) speed is judged, 5 is entered step if speed is more than 0, if speed enters step d equal to 0.The vehicle
The definite method of speed determines that method is identical with the speed used in the step 2) in step 1.
2) it is that the state of holding brake device is detected, is operated if driver if hand-operated valve 9 activates into parking system
Dynamic state enters if driver operates the cancellation activation of hand-operated valve 9 and releases parking braking state.
5. a pair operator brake intention is identified；
Refering to Fig. 3, the control flow chart of shown operator brake intention assessment module, is by brake pedal position first
Displacement sensor 12 obtains the displacement of brake pedal 13, is then carried out at the same time the step 1) of this step and the operation of step 2)：
1) it is the brake pedal displacement signal that is obtained of entire car controller and does not install this air-pressure brake energy regenerating system additional
Former vehicle pedal displacement-brake application curve of system is compared to obtain total brake force F of driver's actual demandtotal。
2) it is by brake pedal displacement dBrakingWith brake pedal displacement threshold value dThresholdingIt is compared, dThresholdingRefer to target vehicle
Braking deceleration is 2m/s2When corresponding brake pedal displacement, if dBraking＜ dThresholdingThen into small intensity braking mode, if dBraking≥
dThresholdingThen enter big intensity braking mode.
After the operation of the step 1) and step 2) of completing step, 6 are entered step；
6. axle braking force is allocated before and after pair；
1) load transducer carried by former vehicle obtains the magnitude of load of vehicle；
2) according to the definite total brake force F of carload size and step 5totalIn the braking force distribution curve of target vehicle
Corresponding ideal braking force distribution coefficient is found on figure and is braked it as the antero posterior axis of this air-pressure brake energy-recuperation system
Power distribution coefficient β；
3) front axle braking force F is determined according to the following formulafWith rear axle braking force Fr：
Ff=Ftotal·β
Fr=Ftotal·(1-β)
In formula：FfFor front axle braking force, unit N；FrFor rear axle braking force, unit N；FtotalIt is single for total brake force
Position is N；β is antero posterior axis brake-power balance coefficient；
7. pair electricity, gas brake force are allocated
1) according to step 6 determine front and rear axle braking force determine front axle motor braking power and mechanical braking force summation and
The summation of rear axle motor braking power and mechanical braking force；
2) braking mode determined according to step 5 divides motor braking power and mechanical braking force, if step 5 is judged into small
Intensity braking mode, then motor braking power is equal to total brake force, mechanical braking force 0；If step 5 judges to brake into big intensity
Pattern, then for mechanical braking force equal to total brake force, motor braking power is 0.
Claims (5)
1. a kind of air-pressure brake energy-recuperation system, which is characterized in that a kind of air-pressure brake energy-recuperation system includes
High-pressure air source device, air pressure regulator, braking executive device and brake power recovering device；
The high-pressure air source device includes four-loop protection valve (10), the dry gas receiver of rear axle (11) and the dry gas receiver of front axle
(25)；
The air pressure regulator includes hand-operated valve (9), quick release valve (17), rear axle failure pressure sensor (26), front axle and loses
Imitate pressure sensor (27), front axle threeway (31) and rear axle threeway (34)；
The braking executive device includes the near front wheel brake chamber (2), off-front wheel brake chamber (5), off hind wheel brake chamber
(19) with left rear wheel brake chamber (22)；
1 gas outlet of the four-loop protection valve (10) is connected with a port tubes of hand-operated valve (9), the dry gas receiver of rear axle
(11) with the gas outlet of the dry gas receiver of front axle (25) and rear axle failure pressure sensor (26) and front axle failure pressure sensor
(27) pipeline connects；Pneumatic circuit and off hind wheel brake chamber (19) and left rear wheel is respectively adopted in (17) two outlet sides of quick release valve
Pneumatic circuit and the near front wheel braking is respectively adopted in the ante-chamber connection of brake chamber (22), b ports and the c ports of front axle threeway (31)
Gas chamber (2) is connected with a ports of off-front wheel brake chamber (5), and air pressure is respectively adopted in b ports and the c ports of rear axle threeway (34)
Pipeline and left rear wheel brake chamber (22) are connected with a ports of off hind wheel brake chamber (19)；The Brake energy recovery dress
It puts before being fixedly mounted on bridge and rear axle.
A kind of 2. air-pressure brake energy-recuperation system described in accordance with the claim 1, which is characterized in that the high-pressure air source dress
It puts and further includes air pump (7), unloading valve (8) and wet gas receiver (24)；
The air pump (7) is connected by unloading valve (8) with the inlet end of wet gas receiver (24) using pneumatic circuit, wet gas receiver
(24) outlet side is attached using the inlet end of pneumatic circuit and four-loop protection valve (10), four-loop protection valve (10)
Pneumatic circuit is respectively adopted in another two outlet side and the dry gas receiver of rear axle (11) is connected with the inlet end of the dry gas receiver of front axle (25).
A kind of 3. air-pressure brake energy-recuperation system described in accordance with the claim 1, which is characterized in that the air pressure adjustment dress
It puts and further includes brake pedal displacement sensor (12), brake pedal (13), rear axle pressure-regulating valve (14), front axle failure circuit three
Logical (15), fail safe electrically-controlled valve (16), brake valve (28), front axle pressure-regulating valve (29), rear axle failure circuit threeway (30),
Front axle pressure sensor (32) and rear axle pressure sensor (33)；
One end of the rear axle failure pressure sensor (26) is connected with the epicoele arrival end of brake valve (28) using pneumatic circuit
It connects, one end of front axle failure pressure sensor (27) is connected with the cavity of resorption arrival end of brake valve (28) using pneumatic circuit, braking
The cavity of resorption port of export of valve (28) and the epicoele port of export respectively with front axle pressure-regulating valve (29) and rear axle pressure-regulating valve (14)
Arrival end is connected using pneumatic circuit, and front axle pressure-regulating valve (29) and the port of export of rear axle pressure-regulating valve (14) are respectively adopted
The a ports of pneumatic circuit and front axle failure circuit threeway (15) are connected with a ports of rear axle failure circuit threeway (30)；Failure is protected
The p ports of shield electrically-controlled valve (16) are connected with the b ports of front axle failure circuit threeway (15) using pneumatic circuit, and fail safe is automatically controlled
The q ports of valve (16) are connected with the b ports of rear axle failure circuit threeway (30) using pneumatic circuit；Front axle pressure sensor (32)
On pneumatic circuit between the c ports of front axle failure circuit threeway (15) and a ports of front axle threeway (31)；Rear axle pressure
Force snesor (33) is mounted on the air pressure between the c ports of rear axle failure circuit threeway (30) and a ports of rear axle threeway (34)
On pipeline, the b ports of hand-operated valve (9) are connected with one end of quick release valve (17) using pneumatic circuit, brake pedal displacement sensor
(12) it is mounted on brake pedal (13), brake pedal (13) is mounted on brake valve (28).
4. a kind of air-pressure brake energy-recuperation system described in accordance with the claim 1, which is characterized in that the braking energy returns
Bridge on rear axle with referring to before receiving apparatus is fixedly mounted on：
Brake power recovering device includes preceding spindle motor (3), rear spindle motor (20), front axle differential (4) and rear axle differential
(21)；
The front axle differential (4) is mechanically connected with preceding spindle motor (3), rear axle differential (21) and rear spindle motor (20) machinery
Connection, front axle differential (4) are mechanically connected with rear axle differential (21) with front axle half shaft and rear axle shaft respectively.
5. a kind of air-pressure brake energy-recuperation system described in accordance with the claim 1, which is characterized in that the braking performs dress
It puts and further includes the near front wheel wheel speed sensors (1), off-front wheel wheel speed sensors (6), off hind wheel wheel speed sensors (18) and left rear wheel
Wheel speed sensors (23)；
The near front wheel brake chamber (2), off-front wheel brake chamber (5), off hind wheel brake chamber (19) and the left rear wheel braking
Gas chamber (22) using combined type spring brake chamber and respectively with the brake on the near front wheel, off-front wheel, off hind wheel, left rear wheel
It is mechanically connected；
The near front wheel wheel speed sensors (1) of the described each wheel wheel speed signal of acquisition, off-front wheel wheel speed sensors (6), it is right after
Wheel wheel speed sensors (18) are separately mounted to the near front wheel, off-front wheel, off hind wheel and left rear wheel with left rear wheel wheel speed sensors (23)
On.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721535589.0U CN207433509U (en) | 2017-11-16 | 2017-11-16 | A kind of air-pressure brake energy-recuperation system |
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| CN201721535589.0U CN207433509U (en) | 2017-11-16 | 2017-11-16 | A kind of air-pressure brake energy-recuperation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107839672A (en) * | 2017-11-16 | 2018-03-27 | 吉林大学 | A kind of air-pressure brake energy-recuperation system and its control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107839672A (en) * | 2017-11-16 | 2018-03-27 | 吉林大学 | A kind of air-pressure brake energy-recuperation system and its control method |
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