CN104816639A - New energy commercial vehicle energy efficient recovery system - Google Patents
New energy commercial vehicle energy efficient recovery system Download PDFInfo
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- CN104816639A CN104816639A CN201510201332.0A CN201510201332A CN104816639A CN 104816639 A CN104816639 A CN 104816639A CN 201510201332 A CN201510201332 A CN 201510201332A CN 104816639 A CN104816639 A CN 104816639A
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Abstract
Disclosed is a new energy commercial vehicle energy efficient recovery system. The new energy commercial vehicle energy efficient recovery system is characterized in that an electric generator is connected with a storage battery, the electric generator is connected with an ECU (electronic control unit) through an electric generator controller, an acceleration sensor and a displacement sensor are arranged on an electromagnet foot valve, the displacement sensor is used to measure the descending position of an ejection rod, the acceleration sensor moves along with the ejection rod, the acceleration sensor is used to measure the descending accelerated speed of a pedal, the acceleration sensor, the displacement sensor, the storage battery and a proportion relay valve are respectively connected with the ECU, a brake pedal work angle of the maximum point braking of the electromagnet foot valve ranges from 11 degrees to 12.5 degrees, and a brake pedal work angle of the maximum semi-braking of the electromagnet foot valve ranges from 19 degrees to 20.5 degrees. The new energy commercial vehicle energy efficient recovery system is obtained by optimizing a new energy commercial vehicle energy efficient recovery system in the prior art, and the optimized new energy commercial vehicle energy efficient recovery system can recover 50% of energy at most when a vehicle brakes, greatly improves charging efficiency, and reduces wear of friction braking on a brake and related components.
Description
Technical field
The present invention relates to a kind of Recov ery of Energy During Automotive Brake, especially relate to a kind of new forms of energy commercial vehicle/comm..vehicle brake energy recovering system.
Background technology
At present, new-energy automobile is all equipped with brake energy feedback system, and its principle is in braking procedure, reclaim the potential energy that vehicle own wt produces, and is stored among super capacitor with the form of electric energy.Current new-energy automobile is all equipped with in brake energy feedback system, and the brake pedal operating angle of the maximum point braking of electromagnetism foot valve is little, and cause brake energy feedback system energy recovery rate lower, charge efficiency is low.Due to can not the intention of intelligent decision chaufeur, when chaufeur emergency braking, generator operation, affects the safety performance of new-energy automobile, adopts friction braking to cause wearing and tearing to drg and related components.Therefore the brake energy feedback system energy recovery rate of new-energy automobile (refering in particular to mixed power city public transport) is general lower, basic is 20-30%, add that driver operation is accustomed to, cause energy recovery rate lower, be necessary the control element of energy-recuperation system intelligent for this reason, both improve energy recovery rate, and ensure vehicle driving safety.
Summary of the invention
The technical problem to be solved in the present invention is the defect overcoming the existence of above-mentioned prior art, a kind of new forms of energy commercial vehicle/comm..vehicle energy efficient recovery system is provided, by the intention of intelligent decision chaufeur, when chaufeur emergency braking, guarantee that electrical generator does not brake charging, and improve energy recovery rate by the brake pedal operating angle of the maximum point braking determining suitable electromagnetism foot valve, increase charge efficiency.
The technical scheme that the technical matters that the present invention solves adopts is: a kind of new forms of energy commercial vehicle/comm..vehicle energy efficient recovery system, comprise ECU electronic control unit 8, electromagnetism foot valve 1, proportion relay valve 10, front and back ABS electromagnetic valve 9, abs controller 11, electrical generator 13, propons and back axle 14, back axle 14 is connected with axle drive shaft 12, axle drive shaft 12 is provided with above-mentioned electrical generator 13, electrical generator 13 is connected with storage battery 15, electrical generator 13 is connected with ECU electronic control unit 8 by engine controller 16, back axle 14 is provided with spring brake chamber 6, electromagnetism foot valve 1 is provided with the push rod 18 under pedal 17 and pedal 17, it is characterized in that electromagnetism foot valve 1 is provided with acceleration pick-up 4 and displacement pickup 2, displacement pickup 4 is for measuring the descending position of push rod 18, acceleration pick-up 2 is servo-actuated with push rod 18, acceleration pick-up 2 is for measuring the descending acceleration/accel of pedal 17, acceleration pick-up 2, displacement pickup 4, storage battery 15 is connected with ECU electronic control unit 8 respectively with proportion relay valve 10, the brake pedal operating angle of the maximum point braking of electromagnetism foot valve 1 is 11 degree-12.5 degree, the brake pedal operating angle of maximum half braking of electromagnetism foot valve 1 is 19 degree-20.5 degree.
When needing some braking (non-emergent brake, just short time to reach the object of deceleration just passable) in vehicle operating, chaufeur steps on the pedal 17 of electromagnetism foot valve 1, and push rod 18 moves.When the descending angle of pedal 17 is operated in before the brake pedal operating angle of maximum point braking, electromagnetism foot valve 1 does not have air pressure to export, it is also now the hollow travel stage of electromagnetism foot valve 1, displacement pickup 2 feeds back signal to ECU electronic control unit 8, then ECU electronic control unit 8 sends signal to engine controller 16, electrical generator 13 is allowed to start working, utilize the High Rotation Speed of axle drive shaft 12 to cut electrical generator 13 Inside coil to generate electricity, and result from the moment that axle drive shaft 12 rotation direction is contrary, reach the object of car retardation.
When vehicle needs semi-brake, the rate of braking that semi-brake comparatively puts braking is larger, such as, when turning, chaufeur needs to strengthen the stroke stepping on stretcher 17, push rod 18 movement faster, when operating angle principle of work when being less than the brake pedal operating angle of maximum point braking of pedal 17 is the same, when pedal 17 is greater than the brake pedal operating angle of maximum point braking and is less than the brake pedal operating angle of maximum half braking, now ECU electronic control unit 8 still controls engine controller 16, electrical generator 13 is started working, while charging, the rotating speed of axle drive shaft 12 is declined.Needed for semi-brake process, braking force is larger, so in forced stroke between the pedal 17 brake pedal operating angle of braking at maximum point and the brake pedal operating angle of maximum half braking, electromagnetism foot valve 1 has air pressure and exports, control ratio relay valve 10 and ABS electromagnetic valve 9 work, and a diaphragm point chamber for most relief spring brake chamber 6 is braked wheel.
When vehicle needs emergency braking or significantly slows down, chaufeur can quick pedal 17, because acceleration pick-up 2 sets an accekeration, when the acceleration/accel that chaufeur steps on stretcher exceedes setting value, acceleration pick-up has signal and exports, acceleration pick-up 2 feeds back signal to ECU electronic control unit 8, then ECU electronic control unit 8 controls engine controller 16, electrical generator 13 is made to quit work (charging and deceleration all stop), ECU can be fed back to by acceleration pick-up, then ECU control ratio relay valve exports immediately fast, air pressure fast speed linear growth, the diaphragm of a spring brake chamber 6 point chamber is braked, reach the object that vehicle quick deceleration even stops.
The present invention, by test of many times, determines that the brake pedal operating angle that maximum point is braked is 11 degree of-12.5 degree, adds the generating dutation of electrical generator, improve the efficiency of brake power generating.
As preferably, the brake pedal operating angle of the maximum point braking of electromagnetism foot valve 1 of the present invention is 12 degree, and brake pedal operating angle of maximum half braking of electromagnetism foot valve 1 is 20 degree.
During concrete enforcement, be provided with air receiver 5 and lower air receiver 3, upper air receiver 5 is connected with cavity of resorption admission port with the epicoele admission port of electromagnetism foot valve 1 respectively with lower air receiver 3.
Displacement pickup and acceleration pick-up are integrated in and conduct electricity on magnetic foot valve by the present invention, with ECU electronic control unit 8 centralized control, and can control with ECU electronic control unit 8 is unified after all associated electrical signals being integrated.By accurately setting the pedal of electromagnetism foot valve, the stroke of push rod ensures to electric elements in each operating angle section of product accurate control.The present invention, owing to adding the idle travel of electromagnetism foot valve, by changing the force structure of push rod, allowing and increasing after idle travel that still feel is obvious.After increasing the feel of idle travel, it is too obvious that the power of idle travel forced stroke below can not increase, and what not so can increase chaufeur tramples intensity simultaneously.So this invention adopt operating angle 12 degree in feel obviously, the electromagnetism foot valve that 12 degree of feels arriving full stroke again can not be too heavy.
The efficiency of energy regenerating when system of the present invention improves braking, chaufeur can be allowed in braking and the feel having dynamics to be suitable for very much while recuperated energy simultaneously, and possible intelligent decision chaufeur is the need of emergency braking, simultaneously for it provides corresponding maximum output braking force.Displacement pickup and acceleration pick-up are integrated in and conduct electricity on magnetic foot valve by the present invention, with ECU electronic control unit 8 centralized control, and can control with ECU electronic control unit 8 is unified after all associated electrical signals being integrated.The present invention is by accurately the pedal of setting electromagnetism foot valve, the stroke of push rod ensure the interior accurate control to electric elements of each operating angle section of product.Owing to increasing the idle travel of electromagnetism foot valve, the brake pedal operating angle of the maximum point of electromagnetism foot valve 1 braking is between 11 degree of-12.5 degree, changes the force structure of push rod, allows increase after idle travel that still feel is obvious, after increasing the feel of idle travel simultaneously.Due to the power of the forced stroke after idle travel can not increase too obvious, what not so can increase chaufeur tramples intensity, therefore the present invention adopt a kind of operating angle between 11 degree-12.5 degree in feel obvious, the electromagnetism foot valve that its 11 degree-12.5 degree feels arriving full stroke again can not be too heavy.
The invention has the beneficial effects as follows: the present invention is optimized prior art, energy-recuperation system after optimization, when car brakeing the highest can reclaim 50% energy, considerably increase charge efficiency, not only decrease the wearing and tearing of friction braking to drg and related components, more improve charge efficiency, the same mileage of vehicle operating just can save more oil plant, make the more environmental protection of new forms of energy car, more economical.The intention of first intelligent decision chaufeur, system is according to pedal acceleration/accel determination car retardation or emergency braking; The stroke of two pedals when being the energy feeding brakings increased in moderating process; Three be according to speed-slackening signal by corresponding logic control be transformed into corresponding control presssure export, and delivery pressure and control presssure proportional; No matter when four be, the standby pressure signal that can be exported by speed-slackening signal transmitter is controlled.
Illustrate that the present invention is described further with detailed description of the invention below in conjunction with accompanying drawing.
Detailed description of the invention
In Fig. 1, a kind of new forms of energy commercial vehicle/comm..vehicle energy efficient recovery system, comprise ECU electronic control unit 8, electromagnetism foot valve 1, proportion relay valve 10, front and back ABS electromagnetic valve 9, abs controller 11, electrical generator 13, propons and back axle 14, propons is provided with diaphragm locellus 7, back axle 14 is connected with axle drive shaft 12, axle drive shaft 12 is provided with above-mentioned electrical generator 13, electrical generator 13 is connected with storage battery 15, electrical generator 13 is connected with ECU electronic control unit 8 by engine controller 16, back axle 14 is provided with spring brake chamber 6, electromagnetism foot valve 1 is provided with the push rod 18 under pedal 17 and pedal 17, upper air receiver 5 is connected with cavity of resorption admission port with the epicoele admission port of electromagnetism foot valve 1 respectively with lower air receiver 3, lower air receiver 3 is connected with proportion relay valve 10, upper air receiver 5 and lower air receiver 3 provide source of the gas for electromagnetism foot valve 1 and proportion relay valve 10, electromagnetism foot valve 1 is provided with acceleration pick-up 4 and displacement pickup 2, displacement pickup 4 is for measuring the descending position of push rod 18, acceleration pick-up 2 is servo-actuated with push rod 18, acceleration pick-up 2 is for measuring the descending acceleration/accel of pedal 17, acceleration pick-up 2, displacement pickup 4, storage battery 15 is connected with ECU electronic control unit 8 respectively with proportion relay valve 10, the brake pedal operating angle of the maximum point braking of electromagnetism foot valve 1 is 12 degree, the brake pedal operating angle of maximum half braking of electromagnetism foot valve 1 is 20 degree.
When needing some braking (non-emergent brake, just short time to reach the object of deceleration just passable) in vehicle operating, chaufeur steps on the pedal 17 of electromagnetism foot valve 1, and push rod 18 moves.When the descending angle of pedal 17 is operated in before the brake pedal operating angle of maximum point braking, electromagnetism foot valve 1 does not have air pressure to export, it is also now the hollow travel stage of electromagnetism foot valve 1, displacement pickup 2 feeds back signal to ECU electronic control unit 8, then ECU electronic control unit 8 sends signal to engine controller 16, electrical generator 13 is allowed to start working, utilize the High Rotation Speed of axle drive shaft 12 to cut electrical generator 13 Inside coil to generate electricity, and result from the moment that axle drive shaft 12 rotation direction is contrary, reach the object of car retardation.
When vehicle needs semi-brake, the rate of braking that semi-brake comparatively puts braking is larger, such as, when turning, chaufeur needs to strengthen the stroke stepping on stretcher 17, push rod 18 movement faster, when operating angle principle of work when being less than the brake pedal operating angle of maximum point braking of pedal 17 is the same, when pedal 17 is greater than the brake pedal operating angle of maximum point braking and is less than the brake pedal operating angle of maximum half braking, now ECU electronic control unit 8 still controls engine controller 16, electrical generator 13 is started working, while charging, the rotating speed of axle drive shaft 12 is declined.Needed for semi-brake process, braking force is larger, so in forced stroke between the pedal 17 brake pedal operating angle of braking at maximum point and the brake pedal operating angle of maximum half braking, electromagnetism foot valve 1 has air pressure and exports, control ratio relay valve 10 and ABS electromagnetic valve 9 work, and a diaphragm point chamber for most relief spring brake chamber 6 is braked wheel.
When vehicle needs emergency braking or significantly slows down, chaufeur can quick pedal 17, because acceleration pick-up 2 sets an accekeration, when the acceleration/accel that chaufeur steps on stretcher exceedes setting value, acceleration pick-up has signal and exports, acceleration pick-up 2 feeds back signal to ECU electronic control unit 8, then ECU electronic control unit 8 controls engine controller 16, electrical generator 13 is made to quit work (charging and deceleration all stop), ECU can be fed back to by acceleration pick-up, then ECU control ratio relay valve exports immediately fast, air pressure fast speed linear growth, the diaphragm of a spring brake chamber 6 point chamber is braked, reach the object that vehicle quick deceleration even stops.
Displacement pickup and acceleration pick-up are integrated in and conduct electricity on magnetic foot valve by the present invention, with ECU electronic control unit 8 centralized control, and can control with ECU electronic control unit 8 is unified after all associated electrical signals being integrated.By accurately setting the pedal of electromagnetism foot valve, the stroke of push rod ensures to electric elements in each operating angle section of product accurate control.The present invention, owing to adding the idle travel of electromagnetism foot valve, by changing the force structure of push rod, allowing and increasing after idle travel that still feel is obvious.After increasing the feel of idle travel, it is too obvious that the power of idle travel forced stroke below can not increase, and what not so can increase chaufeur tramples intensity simultaneously.So this invention adopt operating angle 12 degree in feel obviously, the electromagnetism foot valve that 12 degree of feels arriving full stroke again can not be too heavy.The efficiency of energy regenerating when system of the present invention improves braking, chaufeur can be allowed in braking and the feel having dynamics to be suitable for very much while recuperated energy simultaneously, and possible intelligent decision chaufeur is the need of emergency braking, simultaneously for it provides corresponding maximum output braking force.Displacement pickup and acceleration pick-up are integrated in and conduct electricity on magnetic foot valve by the present invention, with ECU electronic control unit 8 centralized control, and can control with ECU electronic control unit 8 is unified after all associated electrical signals being integrated.The present invention is by accurately the pedal of setting electromagnetism foot valve, the stroke of push rod ensure the interior accurate control to electric elements of each operating angle section of product.Owing to increasing the idle travel of electromagnetism foot valve, the brake pedal operating angle of the maximum point of electromagnetism foot valve 1 braking is 12 degree, changes the force structure of push rod, allows increase after idle travel that still feel is obvious, after increasing the feel of idle travel simultaneously.Due to the power of the forced stroke after idle travel can not increase too obvious, what not so can increase chaufeur tramples intensity, therefore the present invention adopt a kind of operating angle between 12 degree in feel obvious, the electromagnetism foot valve that its 12 degree feels arriving full stroke again can not be too heavy.
Accompanying drawing explanation
Fig. 1 is the connection structure schematic diagram of the embodiment of the present invention.
In figure: 1. the diaphragm of electromagnetism foot valve 2. displacement pickup 3. times air receiver 4. acceleration pick-up 5. air receiver 6. spring brake chambers divides chamber 7. diaphragm locellus 8.ECU electronic control unit 9.ABS electromagnetic valve 10. proportion relay valve 11.ABS controller 12. axle drive shaft 13. electrical generator 14. back axle 15. storage battery 16. engine controller.
Claims (3)
1. a new forms of energy commercial vehicle/comm..vehicle energy efficient recovery system, comprise ECU electronic control unit (8), electromagnetism foot valve (1), proportion relay valve (10), front and back ABS electromagnetic valve (9), abs controller (11), electrical generator (13), propons and back axle (14), back axle (14) is connected with axle drive shaft (12), axle drive shaft (12) is provided with above-mentioned electrical generator (13), electrical generator (13) is connected with storage battery (15), electrical generator (13) is connected with ECU electronic control unit (8) by engine controller (16), back axle (14) is provided with spring brake chamber (6), electromagnetism foot valve (1) is provided with the push rod (18) under pedal (17) and pedal (17), it is characterized in that electromagnetism foot valve (1) is provided with acceleration pick-up (4) and displacement pickup (2), displacement pickup (4) is for measuring the descending position of push rod (18), acceleration pick-up (2) is servo-actuated with push rod (18), acceleration pick-up (2) is for measuring the descending acceleration/accel of pedal (17), acceleration pick-up (2), displacement pickup (4), storage battery (15) is connected with ECU electronic control unit (8) respectively with proportion relay valve (10), the brake pedal operating angle of the maximum point braking of electromagnetism foot valve (1) is 11 degree-12.5 degree, the brake pedal operating angle of maximum half braking of electromagnetism foot valve (1) is 19 degree-20.5 degree.
2. a kind of new forms of energy commercial vehicle/comm..vehicle energy efficient recovery system according to claim 1, it is characterized in that the brake pedal operating angle that electromagnetism foot valve (1) maximum point is braked is 12 degree, the brake pedal operating angle of maximum half braking of electromagnetism foot valve (1) is 20 degree.
3. a kind of new forms of energy commercial vehicle/comm..vehicle energy efficient recovery system according to claim 1 and 2, it is characterized in that being provided with air receiver (5) and lower air receiver (3), upper air receiver (5) is connected with cavity of resorption admission port with the epicoele admission port of electromagnetism foot valve (1) respectively with lower air receiver (3).
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Cited By (5)
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| CN105698672A (en) * | 2016-02-03 | 2016-06-22 | 浙江荣众机械有限公司 | Embedded measuring method for measuring turn angle of vehicle brake pedal |
| CN105716518A (en) * | 2016-02-03 | 2016-06-29 | 浙江荣众机械有限公司 | Vehicle brake pedal corner-embedded measuring device |
| CN106286259A (en) * | 2016-10-14 | 2017-01-04 | 武汉理工大学 | The vehicle fuel battery air compressor test system that a kind of ECU controls |
| CN106553554A (en) * | 2015-09-30 | 2017-04-05 | 湖南南车时代电动汽车股份有限公司 | A kind of brake control method and system |
| CN110579349A (en) * | 2019-09-18 | 2019-12-17 | 清华大学 | device and method for detecting hysteresis characteristic of air pressure proportional relay valve |
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