Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines
  • B60K6/08—Prime-movers comprising combustion engines and mechanical or fluid energy storing means
  • B60K6/10—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable mechanical accumulator, e.g. flywheel
  • B60K6/105—Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable mechanical accumulator, e.g. flywheel the accumulator being a flywheel
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K17/00—Arrangement or mounting of transmissions in vehicles
  • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing
  • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
  • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
  • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
  • B60Y2400/00—Special features of vehicle units
  • B60Y2400/16—Mechanic energy storages
  • B60Y2400/162—Flywheels
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/60—Other road transportation technologies with climate change mitigation effect
  • Y02T10/62—Hybrid vehicles
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
  • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Definitions

• the present invention relates to electromechanical systems for recovering kinetic energy for vehicles, especially automobiles.
• FR 2 967 619 discloses a hybrid vehicle comprising a kinetic energy recovery system with two epicyclic gear trains of different reasons, driven in parallel respectively by the engine and the electric motor of the vehicle. A system selectively couples one of these trains to an electric generator.
• WO 2010/059041 A1 discloses a kinetic energy recovery system comprising a flywheel, an epicyclic gear train and a reversible motor / generator electric machine.
• the invention aims to meet all or part of these needs and it achieves this through an electromechanical system for recovering kinetic energy for vehicles, comprising:
• At least one epicyclic gear train whose planet gear, ring gear and satellite carrier are connected to said links via, for at least one of them, a coupling system having at least two selected ratios depending on the power flows between the wheels of the vehicle, the flywheel and the electric machine.
• the invention can reduce the size of the electric machine and / or, if desired, recover the kinetic energy of the steering wheel to drive the vehicle in reverse.
• the flywheel can be connected directly to the epicyclic gear train.
• the coupling means is disposed between the flywheel and the epicyclic gear train.
• a clutch can be arranged between the wheels, alternatively between the wheels and the electric machine.
• the reversible electric machine can be two or four quadrants.
• the values of the ratios follow an arithmetic progression, alternatively a geometric progression, or alternatively an arithmetic-geometric progression.
• Monitoring an arithmetic progression makes it possible to minimize the electrical power required, and monitoring a geometric progression makes it possible to minimize the variation of useful electrical energy and consequently that of the electrical energy storage element supplying electricity. the electric machine when it operates as a motor.
• the ratios are discrete, for example being 2, 3 or 4. As a variant, the ratios vary continuously.
• the coupling system can be connected between the epicyclic gear and the output to the wheels. In a variant, the coupling system is connected between the steering wheel and the epicyclic gear train.
• the system can be made in such a way that the reports reverse the rotational speed between the input and the output of the coupling system.
• the invention further relates to a vehicle equipped with a coupling system according to the invention.
• the invention also relates to a vehicle equipped with a system according to the invention, as defined above.
• the subject of the invention is also a method of supplying energy to the wheels of a vehicle by means of a system according to the invention, in which, successively:
• the kinetic energy of the steering wheel is discharged to the wheels, and the electric machine operates as a motor to provide extra energy.
• FIG. 1 schematically represents an exemplary system according to the invention
• FIG. 2 is a view similar to FIG. 1 of an alternative embodiment, FIGS. 3A to 3D show the power flows for different operating conditions of the system of FIG. 1,
• FIGS. 4A to 4D represent the electrification rates in the configurations of FIGS. 3A to 3D respectively
• FIG. 5 is a view similar to FIG. 1 of an alternative embodiment;
• FIGS. 6A and 6B illustrate the power flows for the system of FIG. 5 for forward and reverse respectively, and
• Figures 7 to 9 are views similar to Figure 1, other embodiments.
• FIG. 1 shows an electromechanical system 10 for recovering kinetic energy according to the invention, comprising a flywheel 11, a reversible electric motor / generator 12, and at least one epicyclic gear train 20 having three inputs / outputs 21, 22 and 23.
• the link is considered as an entry when the speed is imposed on the train and as an exit when the speed is imposed by the other entries.
• Wfiy is the speed of rotation of the flywheel and w or t the speed of rotation of the output of the train, towards the wheels.
• Wfiy max is the maximum speed of rotation of the flywheel, Wfl ym i n its minimum speed of rotation, at the end of the kinetic energy discharge, w * fly m i n the speed of synchronization between each report, P em the power of the electric machine, P or t the power output to the wheels, E e i ec the accumulated electrical energy, and E fly the kinetic energy of rotation of the steering wheel.
• One 23 of the inputs / outputs is connected to the wheels 30 of the vehicle, more at least directly, for example by means of a drive train consisting of a bridge equipped with a differential, not shown.
• the input / output 22 is connected to the reversible machine 12.
• the input / output 21 is connected to the flywheel 1 1 via a coupling system 40 offering at least two ratios, given in the example in question by two sets of gears, namely those referenced 41a, 42a on the one hand and those referenced 41b, 42b on the other hand.
• the gears 41a and 41b rotate together and are driven by the inlet / outlet 21 of the epicyclic gear train 20.
• the flywheel 1 1 is selectively driven by the pinion 42a or the pinion 42b according to the position of an element 43 which can be coupled, depending on its position, either with the pinion 42a or with the pinion 42b.
• the gear ratios offered by the coupling system are selected in such a way as to adapt the driveline to the characteristics of the epicyclic gear train.
• the opening of the latter is sized according to various criteria such as acoustics, static mechanical resistance, dynamic or endurance or performance.
• the coupling system aims to provide a balance between minimizing the electrical power required via the size of the electrical machine and minimizing the variation of useful electrical energy by reducing the size of the electrical storage element such as a battery, and the values of the discrete ratios are chosen accordingly.
• the coupling system is placed on the side of the flywheel and in Figure 2 on the side of the transmission chain.
• the coupling system 40 may consist of a continuously variable gearbox (also called CVT).
• CVT continuously variable gearbox
• the coupling system 40 is for example disposed between the epicyclic gear train 20 and the flywheel 11 as illustrated in FIG. 8 or between the epicyclic gear train 20 and the wheels 30, as illustrated in FIG. it is preferred in the invention, for cost reasons, to use a coupling system 20 with a number of discrete ratios, preferably equal to 2, 3 or 4.
• Increasing the opening of the epicyclic gear train 20 may make it possible to avoid these limitations, but has the effect of increasing the power and electrical energy necessary for normal operation in the forward direction.
• the coupling system 40 is designed to reverse the rotation speed with respect to the epicyclic gear train, as shown in FIG. 5.
• FIG. 7 illustrates the possibility of arranging the coupling system 40 so as to reverse the speed of the connection of the sun gear to the wheels 30.
• the invention is not limited to the illustrated examples.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=50231385

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Citations (3)

Family Cites Families (11)

• 2013
  • 2013-12-19 FR FR1363066A patent/FR3015376B1/fr active Active
• 2014
  • 2014-12-19 WO PCT/FR2014/053455 patent/WO2015092320A1/fr not_active Ceased
  • 2014-12-19 EP EP14828256.9A patent/EP3083301A1/de not_active Withdrawn

Patent Citations (3)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events