Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
  • B60W30/18—Propelling the vehicle
  • B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
  • B60W30/1886—Controlling power supply to auxiliary devices
  • B60W30/1888—Control of power take off [PTO]
• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
  • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
  • B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
  • B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
  • B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L2240/00—Control parameters of input or output; Target parameters
  • B60L2240/10—Vehicle control parameters
  • B60L2240/34—Cabin temperature
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W20/00—Control systems specially adapted for hybrid vehicles
• • 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
  • B60Y2400/15—Pneumatic energy storages, e.g. pressure air tanks
• • 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
  • Y02T10/84—Data processing systems or methods, management, administration

Definitions

• the invention relates to a method for operating a drive train of a motor vehicle according to the preamble of claim 1.
• the main components of a powertrain are a prime mover and a transmission.
• the transmission converts speeds and torques and thus provides a traction power supply of the drive unit at a power take-off of the drive train ready.
• the present invention relates to a method for operating a drive train with a drive unit designed as a hybrid drive and at least one transmission-side or drive-gearbox side power take-off.
• the hybrid drive of such a drive train comprises a
• a power take-off is also referred to as a power take-out (PTO), with a power take-off on the transmission side or drive unit side takes power, which is then available at the output not as traction.
• a power take-off can be, for example, a cooling unit of a refrigerated vehicle or a hydraulic press of a refuse vehicle or a hydraulically actuated crane of a utility vehicle or the like.
• the present invention is based on the problem to provide a novel method for operating a drive train of a motor vehicle.
• the present invention enables efficient operation of a drive train with a drive unit designed as a hybrid drive and with at least one power take-off.
• a drive unit designed as a hybrid drive and with at least one power take-off.
• available energy or power in the drive train which is not required as a traction power on the output, bypassing the electrical energy storage stored in the power take-off.
• the bypass of the electrical energy storage has the advantage that the energy throughput is smaller by the same and thus the electrical energy storage can be spared. Furthermore, an energy storage capacity of the drive train is increased by the storage of energy in the power take-off, beyond the scope provided by the electrical energy storage beyond. This corresponds, as it were, to a virtual enlargement of the storage capacity of the electrical energy store.
• FIG. 1 shows an exemplary powertrain diagram of a motor vehicle in which the method according to the invention can be used
• Fig. 2 is a block diagram of a drive train to illustrate the method according to the invention.
• the present invention relates to a method for operating a drive train with a hybrid drive and at least one power take-off.
• Fig. 1 shows a highly schematic of a powertrain diagram of a drive train, in which the inventive method can be used.
• the drive train shown in Fig. 1 via a hybrid drive, which is formed by an internal combustion engine 1 and an electric machine 2, wherein between the hybrid drive, namely the electric machine 2 thereof, and an output 3 of the drive train, a transmission 4 is connected.
• a clutch 5 may be connected according to the embodiment shown.
• a clutch 6 is connected, wherein the coupling 6 provides a starting element and can also be geared internal.
• the drive train of FIG. 1 further has two power take-offs, namely via a transmission-side power take-off 7 and a power take-off 8.
• the transmission-side power take-off 7 takes power from the transmission 4, which is then not available on the output 3 as traction power supply.
• the drive unit side power take-off 8 takes from the hybrid drive, namely the same from the electric machine 2, power.
• FIG. 2 shows a further block diagram for the drive train of FIG. 1, with energy accumulators being shown in FIG. 1 in addition to the previously mentioned assemblies, namely in addition to the internal combustion engine 1, the electric machine 2 and the two auxiliary drives 7 and 8.
• fuel tank 9 of the drive train fuel is kept ready, which is converted by the internal combustion engine 1 into kinetic energy of the motor vehicle, wherein a mass 10 of the motor vehicle stores the kinetic energy thereof.
• the kinetic energy of the vehicle mass 10 can also be increased by the electric machine 2 of the hybrid drive, for which purpose the electric machine 2 discharges an electrical energy store 11 of the drive train more strongly.
• an electrical intermediate circuit 12 which is designed as a DC intermediate circuit, connected as shown in FIG.
• kinetic energy of the vehicle mass 10 can be converted into electrical energy for stronger charging of the electrical energy storage device 1 1 in regenerative operation of the electric machine 1, wherein the discharging of the electrical energy storage device 1 1 and the charging thereof takes place in each case via the electrical intermediate circuit 12.
• the transmission-side power take-off 7 is, for example, a hydraulically operated power take-off, wherein the hydraulically-operated power take-off 7 comprises an electrically driven hydraulic pump 13 , which is supplied by the electrical intermediate circuit 12 with electrical energy, and can convert the electrical energy into hydraulic energy, which is storable in a hydraulic accumulator 14 of the power take-off 7.
• the drive unit side power take-off 8 includes, for example, a cooling unit 15, which is supplied by the electrical DC link 12 with electrical energy, the cooling unit 15 a cooling space 1 6 of the drive train cools, which also acts as an energy storage, namely as a thermal energy storage 1 6.
• the power take-off 8 includes a cooling of the cooling chamber 1 serving 6 cooling unit 15, not required at the output 3 energy bypassing the electrical energy storage device 1 1 from the cooling unit 15 for cooling the cooling chamber 1 6 within permissible temperature limits thereof are used so as to thermally store the energy not required at the output in the cooling chamber 1 6.
• the operation of the refrigerator is allowed without loss of function within a defined temperature range, so available in the drive train, excess energy that is not required as traction, can be used to the refrigerator, bypassing the electrical energy storage 1 1 within the allowable Cool more temperature range.
• the temperature limits are functional limits of the refrigerator compartment 1 6 or cooling unit 15.
• the power take-off 8 is a cooling fan serving cooling the internal combustion engine 1
• energy not needed at the output 3 is used within the permissible temperature limits, bypassing the electrical energy storage device 1 1 from the cooling fan for cooling the internal combustion engine 1 to use the energy not required for the engine cooling at the output 3 thermally, namely to thermally store as cooling power in the mass of the internal combustion engine 1.
• the power take-off 8 is a heating or cooling a passenger compartment serving air conditioner, not needed at the output 3 energy bypassing the electrical energy storage 1 1 from the air conditioner for heating or cooling of the passenger compartment is used within allowable temperature limits, so as not on Downforce 3 needed to use energy in the passenger compartment, namely to store thermally.
• a drive train with a hybrid drive and a power take-off which is operable within a dependent of the power take-off limits without loss of function with a variable energy demand can be operated efficiently by that depends on the operating condition of the hybrid drive and / or depending on the operating state of the electric energy storage and / or depending on the operating state of the power take-off, which is not required at the output 3 as drive power, bypassing the electrical energy storage 1 1 in at least one power take-off 7 and / or 8 can be stored.
• the electrical energy storage 1 1 is conserved, since the energy throughput is reduced by the same.
• the present invention is dependent on the current operating state of the hybrid drive, namely depending on the current operating state of the internal combustion engine 1 and the electric machine 2, and / or depending on the current operating state of the electrical energy storage device 1 1 and / or depending on the current operating state of or each power take-off determines an energy balance over the entire powertrain. On the basis of this energy balance energy is not stored at the output 3 while ensuring optimal overall efficiency of the drive train in the electrical energy storage 1 1 and / or bypassing the electrical energy storage 1 1 stored in the respective power take-off 7 and / or 8.
• a load operating point of the internal combustion engine may be increased, namely when it is determined in the energy balance that the overall efficiency of the powertrain increases as the load operating point of the internal combustion engine increases.
• the power take-off no additional energy, again within allowable operability limits of the respective power take-off, so as to discharge the energy storage of the respective power take off more and for at high driving speeds expected braking energy , which is converted into electrical energy during recuperation, to create storage capacity in the respective energy storage.

Landscapes

• Engineering & Computer Science (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Automation & Control Theory (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)
• Hybrid Electric Vehicles (AREA)
• Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
• Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
• Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=43018957

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (10)

Citations (5)

Family Cites Families (14)

• 2009
  • 2009-09-02 DE DE102009029119A patent/DE102009029119A1/de not_active Withdrawn
• 2010
  • 2010-08-31 WO PCT/EP2010/062701 patent/WO2011026832A1/de not_active Ceased
  • 2010-08-31 US US13/392,910 patent/US8527131B2/en not_active Expired - Fee Related
  • 2010-08-31 CN CN201080039212.0A patent/CN102481922B/zh not_active Expired - Fee Related
  • 2010-08-31 EP EP10751905.0A patent/EP2473386B1/de not_active Not-in-force
  • 2010-08-31 JP JP2012527299A patent/JP2013503775A/ja active Pending

Patent Citations (6)

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