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
  • B60K25/00—Auxiliary drives
  • B60K25/02—Auxiliary drives directly from an engine shaft
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/32—Cooling devices
  • B60H1/3204—Cooling devices using compression
  • B60H1/3222—Cooling devices using compression characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N11/00—Starting of engines by means of electric motors
  • F02N11/003—Starting of engines by means of electric motors said electric motor being also used as a drive for auxiliaries, e.g. for driving transmission pumps or fuel pumps during engine stop
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N11/00—Starting of engines by means of electric motors
  • F02N11/08—Circuits or control means specially adapted for starting of engines
  • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
• • 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
  • B60K25/00—Auxiliary drives
  • B60K25/02—Auxiliary drives directly from an engine shaft
  • B60K2025/022—Auxiliary drives directly from an engine shaft by a mechanical transmission
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N11/00—Starting of engines by means of electric motors
  • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
  • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
  • F02N15/022—Gearing between starting-engines and started engines; Engagement or disengagement thereof the starter comprising an intermediate clutch
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
  • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
  • F02N15/08—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing being of friction type
• • 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
  • Y02T10/10—Internal combustion engine [ICE] based vehicles
  • Y02T10/40—Engine management systems

Definitions

• the present invention relates to a system for a motor vehicle, in particular a truck or a bus.
• the invention aims to improve this type of system.
• the invention thus relates to a system for a motor vehicle, this system comprising:
• an electric machine configured to supply a torque to an internal combustion engine of the vehicle, in particular for starting this internal combustion engine of the vehicle,
• a cooling circuit of the machine arranged to cool this machine and / or a power electronics associated with this machine, this cooling circuit being connected to an air conditioning device, also called air conditioning device, of the vehicle. Thanks to the invention, it is possible to increase the electric power of the electric machine because this well cooled machine can produce more electrical power.
• the invention also allows to take advantage of a simple cooling circuit, namely connected to the air conditioning device present on the vehicle, to cool the electric machine. For example, it is not necessary to provide an additional pump, for example a water pump, to cool the electric machine since it is possible to use the air conditioning device already present on the vehicle.
• the electric machine is reversible so that, in addition to being able to provide a torque to the combustion engine, be able to operate as an alternator driven by the combustion engine.
• the machine is further configured to mechanically operate equipment formed by a compressor, including the air conditioning device.
• the equipment is configured to be able to operate with the electric machine when the combustion engine of the vehicle is at a standstill.
• the air conditioning device comprises in addition to the cooling circuit of the electric machine, a cooling circuit of the passenger compartment arranged to cool the passenger compartment.
• the cooling circuit of the electric machine and that of the passenger compartment are arranged to use the same compressor of the air conditioning device.
• the cooling circuits of the machine and the passenger compartment are connected in series.
• the air conditioning device can use a cooling fluid capable of changing state, in particular from a gaseous state to a liquid state and vice versa.
• the air conditioning device comprises a condenser through which the cooling fluid can circulate, this condenser being arranged to condense the cooling fluid from the gaseous state to the liquid state.
• the air conditioning device advantageously comprises an evaporator through which the cooling fluid can circulate, this evaporator being arranged to evaporate the cooling fluid from the liquid state to the gaseous state.
• the evaporator is used to cool the air that is sent into the cabin.
• the air conditioning device comprises an expansion valve through which the cooling fluid can flow, this expansion valve being arranged to expand the cooling fluid which is in the liquid state, the temperature of the fluid cooling then falling.
• the air conditioning device is arranged to allow the cooling fluid to be cooled to a temperature that is lower, for example, than 10 ° C., especially less than 5 ° C.
• the electrical performance of the electric machine is advantageously increased due to the cooling allowed by the cooling circuit.
• the cooling circuit of the machine is arranged to cool the machine also when the machine operates as an alternator, this machine being then driven by the internal combustion engine of the vehicle. This increases the electrical performance of the machine during this phase of electricity production and also allows the machine to debit more power in the regenerative braking phase.
• the invention also relates to a method for cooling an electric machine configured to provide torque to an internal combustion engine of the vehicle, in particular for starting the internal combustion engine of the vehicle:
• the electric machine is reversible so that, in addition to being able to start the combustion engine, be able to operate as an alternator driven by the combustion engine.
• the electric machine makes it possible to perform the Stop-Start function, allowing automatically restart the combustion engine at the end of an automatic shutdown phase, a phase called "Idling Stop" in English.
• This automatic stopping phase corresponds for example to a stop at a red light, and the combustion engine is restarted when the driver presses the accelerator pedal.
• the combustion engine is stopped, the reversible electric machine can operate the equipment that otherwise would also be stopped.
• the invention is particularly advantageous for a truck or a bus.
• this reversible machine produces electric current that charges a battery of the vehicle.
• the invention makes it possible to dispense with the use of electrified and autonomous equipment.
• the electric machine has an electric power between 4 and 25 kWatts, especially between 6 and 12 kWatts, including a power substantially equal to 8 kWatts.
• This type of machine is for example a machine driven belt.
• the electric machine is, if desired, configured to generate electric current during braking of the vehicle engine. This allows regenerative braking.
• the electric machine is configured to assist the combustion engine when the latter is in operation.
• the equipment is configured to operate with the electric machine when the combustion engine is stopped. If the equipment is an air conditioning compressor, this allows the air conditioning of the cabin even during phases of automatic shutdown or "Idling Stop".
• the equipment comprises a rotary member, in particular rotary shaft, this rotary member having an axis of rotation offset from the axis of rotation of the electric machine.
• the rotary shaft is operated for compressed air.
• the rotary member of the equipment is configured to be able selectively to:
• the rotary member, in particular the rotary shaft, of the equipment is associated with a drive member, in particular a pulley, which is selectively coupled and decoupled with respect to the rotary member, so that that when the driving member is coupled with the rotary member, these two members rotate together, and when the drive member is decoupled from the rotary member, the drive member can rotate without causing the rotary member.
• a drive member in particular a pulley
• the drive member of the equipment is rotated systematically when the electric machine rotates.
• the drive of the equipment can not be idle when the electric machine is running.
• the equipment comprises a clutch, in particular an electromagnetic clutch, arranged to selectively couple and decouple the drive member and the rotary member of the equipment.
• the electrical machine comprises a first drive member associated with the internal combustion engine and a second drive member associated with the equipment, the two members being selectively rotationally fixed or rotatably detachable.
• the two drive members being interconnected by a clutch, in particular an electromagnetic clutch, arranged to selectively couple and decouple the two drive members.
• At least one of the drive members comprises a pulley, in particular the two drive members each comprise a pulley.
• the electric machine and the combustion engine are in particular coupled by a first transmission belt, which is in particular mounted on the first drive member.
• the electrical machine and the equipment are in particular coupled by a second transmission belt, which is in particular mounted on the second drive member of the electric machine.
• this second belt is mounted on the second drive member of the electric machine and on the drive member of the equipment so that these drive members are linked. constantly rotating.
• the first and second transmission belts are distinct.
• the equipment is advantageously arranged to operate solely with the help of the electric machine and the combustion engine, the equipment being in particular devoid of dedicated electric motor.
• the combustion engine comprises a drive member, in particular a pulley, cooperating with the first transmission belt.
• the system arranged so that, in a first mode of operation:
• the combustion engine drives the two coupled drive members, the drive member of the electrical machine driving the equipment including via the drive member of the equipment.
• the electric machine operates as an alternator and the compressor is in operation.
• the system is arranged in such a way that, in a second mode of operation:
• the combustion engine is at a standstill, especially in an automatic shutdown phase
• the electric machine operates as a motor, and the clutch between the two drive members of the machine is open, the two drive members being thus uncoupled,
• the drive member drives the equipment, and the uncoupled drive member does not drive the combustion engine.
• the compressor is in operation while the combustion engine is stopped.
• the system is arranged in such a way that, in a third mode of operation:
• the combustion engine is in operation and drives the electric machine which acts alternator,
• the system is optionally arranged to equip a truck or a bus.
• FIG. 1 is a schematic and partial view of a system according to an exemplary embodiment of the invention
• FIG. 2 is a block diagram illustrating various modes of operation of the system of FIG. 1, and
• FIGS. 3 to 5 represent, schematically and partially, the system of FIG. 1 respectively according to different modes of operation
• FIG. 6 is a diagrammatic and partial view, in section, of the machine 3 of the system of FIG. 1.
• FIG. 1 shows a system 1 for a motor vehicle, comprising:
• an equipment of the motor vehicle 2 an electric machine 3 configured to start an internal combustion engine 4 of the vehicle, this machine 3 being further configured to mechanically operate the equipment 2.
• the motor 4 comprises a rotary shaft 17, as can be seen in FIG. 3. This shaft is a crankshaft.
• the machine 3 comprises a rotary shaft 18 integral with a rotor rotating within a stator.
• the electric machine 3 is reversible so that, in addition to being able to start the combustion engine, it can operate as an alternator driven by the combustion engine 4. In other words, the electric machine 3 makes it possible to perform the Stop-Start function, making it possible to automatically restart the combustion engine at the end of an automatic shutdown phase.
• This automatic stopping phase corresponds for example to a stop at a red light, and the combustion engine is restarted when the driver presses the accelerator pedal.
• the machine may be a synchronous rotating electrical machine with double excitation, that is to say comprising a rotor provided with permanent magnets and an excitation winding.
• the invention is, in the example described, applied to a truck or a bus.
• this reversible machine produces electric current that charges a battery, not shown, of the vehicle.
• the electric machine 3 has an electric power of between 4 and 25 kWatts (kilowatt), including a power substantially equal to 8 kWatts.
• This type of machine 3 is a machine driven belt.
• the electric machine 3 is configured to generate electric current during braking of the vehicle engine. This allows regenerative braking.
• the electric machine 3 is further configured to assist the combustion engine 4 when the latter is in operation.
• the machine 3 is, according to another name, an alternator-starter.
• the machine 3 comprises a power electronics, an inverter, integrated.
• the equipment 2 is configured to be able to operate using the electric machine 3 when the combustion engine 4 is at a standstill.
• the equipment 2 is a mechanical air conditioning compressor of the vehicle.
• the compressor 2 is used in a HVAC system of the motor vehicle.
• the compressor 2 can be controlled in speed to compress or pressurize a refrigerant with one or more rotary pistons actuated by a rotary member 6 of the compressor 2, as can be seen in Figure 3 in particular.
• Other types of compressor can be used if desired.
• the rotary member 6 is a rotary shaft, this rotary member having an axis of rotation X1 offset with respect to the axis of rotation X2 of the electric machine 3, these axes X1 and X2 being parallel and separated by a non-zero distance .
• the rotary shaft 6 is operated for compressed air.
• the shaft 6 of the equipment 2 is configured to be able selectively:
• the rotary shaft 6 of the equipment 2 is associated with a drive member 8, a pulley, which is selectively coupled and decoupled with respect to the shaft 6, so that when the drive member 8 is coupled with the shaft 6, they rotate together, and when the drive member 8 is decoupled from the shaft 6, the drive member 8 can rotate without driving the shaft 6.
• the pulley 8 of the equipment 2 is rotated systematically when the electric machine 3 rotates.
• the equipment 2 comprises an electromagnetic clutch 9 arranged to selectively couple and decouple the pulley 8 and the shaft 6 of the equipment, as can be seen in FIG.
• the electric machine 3 comprises a first drive member 21 associated with the internal combustion engine 4 and a second drive member 22 associated with the equipment 2, the two members 21 and 22 being able to be selectively secured in rotation or disengaged in rotation. .
• These members 21 and 22 are rotatable both around the axis of rotation X2.
• the two drive members 21 and 22 are interconnected by an electromagnetic clutch 25 arranged to selectively couple and decouple the two drive members 21 and 22.
• the driving members 21 and 22 each comprise a pulley.
• the pulley 22 is integral with the shaft 18 of the machine 3.
• the electric machine 3 and the combustion engine 4 are coupled by a first transmission belt 31, which is mounted on the pulley 21.
• the electric machine 3 and the equipment 2 are coupled by a second transmission belt 32, which is mounted on the pulley 22 of the electric machine 3.
• the first and second transmission belts 31 and 32 are distinct.
• the combustion engine 4 comprises a drive member 35, a pulley cooperating with the first transmission belt 31.
• This pulley 35 is integral with the shaft 17 of the engine 4, as illustrated in FIG.
• control step 40 corresponds to a deactivation (OFF) of the conditioned air, namely the compressor 2 is at rest, the motor 4 and the machine 3 can operate without driving the compressor 2 (step 41 of FIG. 2) .
• OFF deactivation
• control 40 corresponds to an activation (ON) of the conditioned air, namely the compressor 2 is running
• the motor 4 and the machine 3 can operate by mechanically driving the compressor 2.
• the combustion engine 4 is running, as better described with reference to Figure 3.
• the internal combustion engine 4 is stopped, as described in more detail in Figure 4 .
• the system 1 operates as follows:
• the electromagnetic clutch 25 is closed so that the two drive members 21 and 22 are coupled in rotation.
• the combustion engine 4 drives the two drive members 21 and 22 coupled, the drive member 22 of the electric machine 3 driving the compressor 2 via the pulley 8 of the compressor 2, the clutch 9 being closed.
• the electric machine 3 operates as an alternator and the compressor 2 is in operation.
• system 1 operates as follows:
• the combustion engine 4 is at a standstill, for example in an automatic stopping phase,
• the electric machine 3 operates in motor mode, and the clutch 25 between the two drive members 21 and 22 of the machine is open, the two drive members 21 and 22 being thus uncoupled,
• the drive member 22 drives the shaft 6 of the compressor 2 via the belt 32 and the clutch 9 is closed, and the uncoupled drive member 21 does not drive the combustion engine 4.
• the compressor 2 is in operation while the combustion engine 4 is at a standstill.
• system 1 operates as follows:
• the combustion engine 4 is in operation and drives the electric machine 3 which acts alternately,
• the clutch 25 on the electric machine is closed so that the pulley 21 rotates the pulley 22 in rotation, these pulleys 21 and 22 being secured by the clutch 25, the clutch 9 on the compressor 2 is open so that the pulley 8 on the compressor 2 rotates without driving the rotary shaft 6 of the compressor. Thus the compressor 2 is stopped.
• the system 1 comprises:
• a cooling circuit 50 of the machine arranged to cool the machine 3 and / or a power electronics, not shown, associated with this machine, this cooling circuit 50 being connected to an air conditioning device 51, also called a device. air conditioning, vehicle.
• the power electronics may for example be an inverter associated with the machine 3.
• the air conditioning device 51 comprises in addition to the cooling circuit 50 of the electric machine, a cooling circuit 52 of the passenger compartment arranged to cool the passenger compartment.
• the cooling circuit 50 of the electric machine and that 52 of the passenger compartment are arranged to use the same compressor 2 of the air conditioning device 51.
• the cooling circuits of the machine and the passenger compartment 50 and 52 are connected in series.
• the air conditioning device 51 uses a cooling fluid capable of changing its state, in particular from a gaseous state to a liquid state and vice versa.
• the air conditioning device 51 comprises a condenser 55 through which the cooling fluid can circulate, this condenser 55 being arranged to condense the cooling fluid from the gaseous state to the liquid state.
• the air conditioning device 51 comprises an evaporator 56 through which the cooling fluid can circulate, this evaporator being arranged to evaporate the cooling fluid from the liquid state to the gaseous state.
• the air conditioning device 51 comprises an expansion valve
• this expansion valve being arranged to expand the cooling fluid which is in the liquid state, the temperature of the cooling fluid then falling.
• the air conditioning device is arranged to allow cooling of the cooling fluid to a temperature below 10 ° C, especially below 5 ° C.
• the cooling circuit 50 of the machine is arranged to cool the machine also when the machine is operating as an alternator, this machine being then driven by the internal combustion engine of the vehicle.
• the cooling fluid in the gaseous state after its exit from the machine 3 is compressed by the compressor 2, which increases the pressure and the temperature of the fluid.
• the cooling fluid passes successively through the condenser 55, the expansion valve 57 and the evaporator 56.
• the cooling fluid in the gaseous state cools the machine 3 and this fluid is heated by the machine 3 by heat exchange.
• the machine 3 comprises a casing 60 in which is housed a stator 61 of the machine 3.
• a rotor 62 is provided in known manner, rotating about the axis X2.
• the casing 60 comprises a channel 65 for the passage of cooling fluid which makes it possible to evacuate calories coming from the machine 3, and particularly from the stator 61.
• This channel 65 may for example be annular, and extend around the stator 61.
• This channel 65 is part of the cooling circuit 50 of the machine 3.
• a separate channel of the housing may, alternatively, be provided.
• a channel can be made using a tube or several dedicated tubes.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• General Engineering & Computer Science (AREA)
• Transportation (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Air-Conditioning For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=53524828

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Family Cites Families (7)

• 2015
  • 2015-04-27 FR FR1553777A patent/FR3035355B1/fr active Active
• 2016
  • 2016-04-26 EP EP16722315.5A patent/EP3288790A1/de not_active Withdrawn
  • 2016-04-26 WO PCT/FR2016/050983 patent/WO2016174347A1/fr unknown

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