Summary of the invention
In order to overcome the deficiency of prior art, the object of the present invention is to provide a kind of idling oil consumption, discharging and noise eliminated, reach the hybrid power system and the control method thereof with idling switch-off function of energy-saving and emission-reduction.
Technical scheme of the present invention is: the hybrid power system with idling switch-off function; It comprises driving engine, drive motor, above super capacitor group and controller, is connected by power-transfer clutch between driving engine and drive motor, and drive motor is electrically connected with controller by frequency converter; The mouth of driving engine connects controller; The controller other end connects the super capacitor group, and it also comprises phase asynchronous BSG motor, electric power-assisted steering apparatus, emergent motor and accumulator; Driving engine drives phase asynchronous BSG motor by belt, and the phase asynchronous BSG motor other end is electrically connected with the super capacitor group through controller and charges to the super capacitor group; Controller is electrically connected with emergent motor, accumulator and electric power-assisted steering apparatus respectively, and the mouth of accumulator and emergent motor all is connected electric power-assisted steering apparatus.
Among the present invention, use phase asynchronous BSG motor to replace the existing magneto alternator that adopts and be the charging of super capacitor group, do not need magnetic clutch control generator speed, guarantee the sparking phenomenon can not occur, guarantee vehicle driving safety; Three phase induction generator adopts converter technique simultaneously, and alerting ability is high, and is easy to maintenance, and speed governing is convenient and performance is good; Have characteristics such as cost is low, control is simple, technology maturation.
Said electric power-assisted steering apparatus comprises former car hydrostatic steering system, power-assisted steering device and the emergent hydrostatic steering system that is electrically connected with controller respectively, and the mouth of accumulator and emergent motor all is connected emergent hydrostatic steering system.
Be provided with another frequency converter in the said phase asynchronous BSG motor, the alternating current that phase asynchronous BSG motor is produced by frequency converter converts direct current (DC) to and sends to the super capacitor group.
Among the present invention; Be provided with electric power-assisted steering apparatus, when the passenger vehicle idling was stopped, driving engine was not worked; It is electric boosted to be by the emergent hydrostatic steering system in the electric power-assisted steering apparatus that vehicle provides; Eliminate idling oil consumption, discharging and noise thereby reach, finally reach the purpose of energy-saving and emission-reduction, remarkable for the city bus of frequent start-stop in effect aspect the energy-saving and emission-reduction.
Among the present invention; Control method with hybrid power system of idling switch-off function is: when the speed of a motor vehicle is lower than 22Km/h; Driving engine separates with drive motor through power-transfer clutch, and at this moment controller judges whether vehicle satisfies the logic of switch-off, then kills engine if satisfy; If do not satisfy, driving engine is in idling mode, is the charging of super capacitor group by the phase asynchronous BSG motor of engine drives, and the super capacitor group is the drive motor power supply, and the power of vehicle is provided;
When the speed of a motor vehicle surpasses 22Km/h, the phase asynchronous BSG motor of engine drives, power-transfer clutch engages with drive motor simultaneously, together drives bus driving by driving engine and drive motor;
When passenger vehicle was in cruising condition, the power that driving engine provides was greater than the passenger vehicle demand power, and this moment, drive motor converted generator mode into, was the charging of super capacitor group;
When passenger vehicle slowed down, the super capacitor group reclaimed braking energy; Simultaneously, driving engine breaks off through power-transfer clutch and drive motor, and driving engine is in idling mode, and phase asynchronous BSG motor is the charging of super capacitor group;
When the passenger vehicle idling was stopped, driving engine was not worked, and driving engine transmits control signal to controller, and controller cuts out former car hydrostatic steering system and steering booster; Simultaneously; Controller sends an actuation signal for emergent motor, and emergent motor is to emergent hydrostatic steering system fuel feeding, emergent motor follow meet an urgent need also do not set up between hydrostatic steering system turn to needed oil pressure before; Energy storage is realized slitless connection to emergent hydrostatic steering system pressure oil output; After engine operation, driving engine sends signal to controller, and the emergent oil pressure steering swivel system of controller control quits work, and former car hydrostatic steering system is resumed work.
It is said when the speed of a motor vehicle is lower than 22Km/h; Driving engine separates with driving motor through power-transfer clutch, and at this moment controller judges that the electric weight of super capacitor group is whether sufficient, controller detects the speed of a motor vehicle, parking brake, car load air pressure or energy-storage travelling wave tube SOC and whether satisfies the flame-out logic of vehicle parking.
The present invention adopts phase asynchronous BSG motor to replace existing permanent magnetism and sends out synchronous dynamo, and phase asynchronous BSG motor adopts converter technique, and alerting ability is high, and is easy to maintenance, and speed governing is convenient and performance is good; Have characteristics such as cost is low, control is simple, technology maturation; The series-parallel hybrid electric system that the present invention simultaneously has idling switch-off function when the hybrid vehicle idling is stopped, can kill engine, and reaches and eliminates idling oil consumption, discharging and noise, finally reaches the purpose of energy-saving and emission-reduction; In addition, the present invention also is provided with electric power-assisted steering apparatus, and when idling was stopped, it was electric boosted to be that vehicle provides through electric power-assisted steering apparatus, makes vehicle be in motoring condition.
The specific embodiment
Below in conjunction with the specific embodiment the present invention is done further detailed explanation.
The present invention has the hybrid power system of idling switch-off function; It comprises driving engine 1, drive motor 2, an above super capacitor group 3 and a controller 4, and 2 of driving engine 1 and drive motor are connected by power-transfer clutch 5, and drive motor 2 is electrically connected with controller 4 by frequency converter 21; The mouth of driving engine 1 connects controller 4; Controller 4 other ends connect super capacitor group 3, and it also comprises phase asynchronous BSG motor 6, electric power-assisted steering apparatus 7, emergent motor 8 and accumulator 9; Driving engine 1 drives phase asynchronous BSG motor 6 by belt, and phase asynchronous BSG motor 6 other ends are electrically connected with super capacitor group 3 through controller 4 and charge to super capacitor group 3; Controller 4 is electrically connected with emergent motor 8, accumulator 9 and electric power-assisted steering apparatus 7 respectively, and the mouth of accumulator 9 and emergent motor 8 all is connected electric power-assisted steering apparatus 7.
Said electric power-assisted steering apparatus 7 comprises former car hydrostatic steering system 71, power-assisted steering device 72 and the emergent hydrostatic steering system 73 that is electrically connected with controller 4 respectively, and the mouth of accumulator 9 and emergent motor 8 all is connected emergent hydrostatic steering system 73.
Be provided with another frequency converter 61 in the said phase asynchronous BSG motor 6, the alternating current that phase asynchronous BSG motor 6 is produced by frequency converter 61 converts direct current (DC) to and sends to super capacitor group 3.
Among the present invention; Control method with hybrid power system of idling switch-off function is: when the speed of a motor vehicle is lower than 22Km/h; Driving engine 1 separates with drive motor 2 through power-transfer clutch 5; At this moment controller 4 judges that the electric weight of super capacitor group 3 is whether sufficient, controller 4 detects signals such as the speed of a motor vehicle, parking brake, car load air pressure or energy-storage travelling wave tube SOC and whether satisfies the flame-out logic of vehicle parking, then kills engine 1 if satisfy, and reaches the purpose of eliminating idling oil consumption, emission abatement and reduction noise; If do not satisfy, driving engine 1 is in idling mode, and driving phase asynchronous BSG motor 6 by driving engine 1 is 3 chargings of super capacitor group, and super capacitor group 3 is drive motor 2 power supplies, and the power of vehicle is provided;
When the speed of a motor vehicle surpassed 22Km/h, driving engine 1 drove phase asynchronous BSG motor 6 through belt-driving, and power-transfer clutch 5 engages with drive motor 2 simultaneously, together drives bus driving by driving engine 1 and drive motor 2, and can make driving engine 1 be operated in efficient district this moment;
When passenger vehicle was in cruising condition, the power that driving engine 1 is provided was greater than the passenger vehicle demand power, and this moment, drive motor 2 converted generator mode into, was 3 chargings of super capacitor group;
When passenger vehicle slowed down, super capacitor group 3 reclaimed braking energy, because super capacitor group 3 can reclaim significant amount of energy at short notice, so the percent recovery of energy is very high; Simultaneously, driving engine 1 breaks off through power-transfer clutch 5 and drive motor 2, and driving engine 1 is in idling mode, and phase asynchronous BSG motor 6 is 3 chargings of super capacitor group;
When the passenger vehicle idling was stopped, driving engine 1 was not worked, and driving engine 1 transmits control signal for controller 4, and controller 4 is through former car hydrostatic steering system 71 of the closed electromagnetic valve on the hydraulic circuit and steering booster 72; Simultaneously; Controller 4 sends an actuation signal for emergent motor 8; Emergent motor 8 is to emergent hydrostatic steering system 73 fuel feeding; Emergent motor 8 also do not set up with emergent 73 of hydrostatic steering systems turn to needed oil pressure before, 9 pairs of emergent hydrostatic steering system 73 pressure oil output of energy storage realize slitless connection; After driving engine 1 work, driving engine 1 sends signal for controller 4, and the emergent oil pressure steering swivel system 73 of controller 4 controls quits work, and former car hydrostatic steering system 71 is resumed work.