Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D41/00—Electrical control of supply of combustible mixture or its constituents
  • F02D41/02—Circuit arrangements for generating control signals
  • F02D41/021—Introducing corrections for particular conditions exterior to the engine
  • F02D41/0215—Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission
  • F02D41/023—Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission in relation with the gear ratio shifting
• • 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
  • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
  • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
• • 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
  • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
  • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
• • 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
  • B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
  • B60T2201/00—Particular use of vehicle brake systems; Special systems using also the brakes; Special software modules within the brake system controller
  • B60T2201/09—Engine drag compensation
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02D—CONTROLLING COMBUSTION ENGINES
  • F02D2250/00—Engine control related to specific problems or objectives
  • F02D2250/18—Control of the engine output torque
  • F02D2250/24—Control of the engine output torque by using an external load, e.g. a generator
• • 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

Definitions

• the present invention relates to a method for operating a vehicle, in particular a two-wheeler, with an internal combustion engine, an electric machine coupled to it in a torque-transmitting manner and a manually operable transmission, as well as a computing unit and a computer program for its implementation.
• a so-called shift assistant can be provided to support the shifting process, so that an existing clutch no longer has to be operated.
• a method for operating a vehicle in particular a two-wheeler (or motorcycle or motorcycle), with an internal combustion engine, an electrical machine coupled to it for torque transmission and a manually operated transmission with several different gears and a computing unit and a computer program for it
• a so-called shift assistant can be provided in vehicles with an internal combustion engine and a manually operated transmission, which can be integrated into an engine control device, for example.
• the internal combustion engine can be operated, for example by the engine control unit, in such a way that the load is removed from the gears of the transmission and a load-free gear change is possible without actuating the clutch.
• the ignition and injection are temporarily (typically less than 300 ms) suppressed to relieve the transmission, or the injection quantity is greatly reduced and the throttle valve opening is adjusted accordingly, so that the Drive torque is reduced and the load is removed from the gearbox.
• a typical operating point here can be upshifting during an acceleration phase.
• the internal combustion engine can also be driven or dragged via the transmission by the rear wheel (for example in overrun mode).
• the internal combustion engine has to apply the corresponding drag torque to overcome its own friction.
• the throttle valve can be set differently as requested by the driver. Accordingly, an electronically controlled or actuated throttle valve may be necessary for this process.
• monitoring with regard to a deviation of an actual position of the throttle valve from a position requested by a driver can be carried out in the usual manner, with a countermeasure such as a warning message being initiated if a deviation is present or is detected.
• a deviation can, for example, be viewed or recognized as present if the difference between the actual position and the position requested by the driver is greater than a predefined threshold value. This then applies regardless of the presence or absence of a switching process.
• the proposed procedure is also appropriate when operating the internal combustion engine, in which it generates a torque, e.g. when accelerating. can be turned by the electric machine has a braking effect on the internal combustion engine
• the application is particularly preferred for a downshifting gear, especially if the desired shifting operation is recognized during a drag operation or overrun operation of the internal combustion engine, since a load release is only there by adapting the injection is not effective.
• the electrical machine can be operated in such a way that the electrical machine exerts an increasing (ie accelerating) torque on the internal combustion engine.
• the electrical machine or its rotor can be connected directly to the crankshaft of the internal combustion engine in a torque-proof manner and, for example, be designed as a permanently excited synchronous machine.
• the electric machine can also have a different working method or its torque can be transmitted to the crankshaft by means of a translation, a belt drive, a chain or otherwise.
• a shift assistant for a shift operation in overrun mode can also be implemented if a mechanical or mechanically actuatable throttle valve is provided.
• the drag torque or friction torque of the internal combustion engine (including clutch and transmission input mechanics) must be applied.
• the air bypass (stepper) usually cannot suck in enough air to generate the necessary combustion energy and thus compensate for the drag torque over the entire speed range. Therefore, a corresponding shift without clutch or without actuating the clutch for these systems is not supported un.
• a shift assistant can also be implemented for systems with a mechanical throttle valve for all load cases.
• Another advantage of the proposed procedure is that the required drag torque is reached more quickly.
• the internal combustion engine can only generate torque through the combustion process. Depending on the speed and number of cylinders, a different amount of time elapses between the burns and thus until a possible change or application of the torque. Especially for low speeds in single-cylinder internal combustion engines, a correspondingly long time passes before the transmission is relieved for a shifting process and the internal combustion engine generates the necessary drag torque.
• the electric machine can provide the required torque much faster and accelerate or improve the switching process accordingly.
• the torque generation can be better synchronized with the driver's shifting process and, for example, a special torque profile can be specified over time.
• This torque profile can be used depending on the detection of the switching activity or its type or speed (e.g. how quickly the lever is actuated) and other parameters of the internal combustion engine such as speed, oil temperature, and the like.
• a computing unit according to the invention for example a control unit of a vehicle, is set up, in particular in terms of programming, to carry out a method according to the invention.
• the implementation of a method according to the invention in the form of a computer program or computer program product with program code for performing all method steps is advantageous, since this causes particularly low costs, especially if an executing control device is used for other tasks and is therefore available anyway.
• Suitable data carriers for providing the computer program are, in particular, magnetic, optical and electrical memories, such as hard drives, flash memories, EEPROMs, DVDs, etc.
• a program can also be downloaded via computer networks (Internet, intranet, etc.).
• FIG. 1 shows schematically a vehicle with an internal combustion engine and an electric machine, with which a method according to the invention can be carried out.
• FIG. 2 schematically shows a sequence of a method according to the invention in a preferred embodiment.
• FIG. 1 a vehicle 100 designed as a motorcycle, with an internal combustion engine 110, an electric machine 120 and a manual or manually operable transmission 140 is shown, in which a method according to the invention can be carried out.
• the internal combustion engine 110 is designed as an internal combustion engine with a cylinder 111 and a crankshaft 115, for example.
• the electrical machine 120 is coupled to the crankshaft 115 - and thus also to the internal combustion engine 110 - in a torque-transmitting manner.
• the internal combustion engine 110 is connected to a clutch 130 via the crankshaft 115 and via this to the transmission 140.
• the electrical machine 120 can be controlled accordingly, i.e. a torque-absorbing or generator operation can be carried out in which a braking torque is applied to the crankshaft and thus the internal combustion engine. Likewise, a torque-generating or motorized operation can be carried out in which an accelerating or driving torque is applied to the crankshaft and thus the internal combustion engine.
• a drive handle 150 when actuated, a fuel injection and, for example, an electronically actuated throttle valve 112 are activated, as well as a shift pedal 155, when actuated a gear of the transmission 140 is changed.
• a sequence of a method according to the invention is shown schematically in a preferred embodiment.
• a step 200 it is first monitored whether a switching process is being initiated. If a shift request or the start of a shift is recognized in step 210, for example on the basis of a load or actuation or initial movement of the shift pedal, then in step 220 - if the internal combustion engine is in towing mode - the electrical machine is eg according to a Torque profile 225 is controlled or operated in such a way that it exerts an increasing or accelerating torque on the internal combustion engine, so that ultimately the transmission is made load-free.
• step 230 The gear change can now take place without problems in a step 230, and then in step 240 the electrical machine can be reset to the previous state.
• step 220 the switching process or the sequence and duration of which are typically specified by the driver so that step 220 can be carried out quickly, for example using the torque profile 225, which can take place depending on the actual speed of the shifting process (which can be detected for this purpose, for example).
• continuous monitoring 250 with regard to a deviation of an actual position from a position of the throttle valve requested by a driver can be carried out, which does not have to be changed due to the special control of the electrical machine for releasing the load of the transmission even during the shifting process, since the The throttle valve does not have to be activated independently of the driver's request.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Automation & Control Theory (AREA)
• General Engineering & Computer Science (AREA)
• Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
• Hybrid Electric Vehicles (AREA)
• Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
• Electric Propulsion And Braking For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=76641671

Family Applications (1)

Country Status (4)

Family Cites Families (10)

• 2020
  • 2020-06-25 DE DE102020207882.3A patent/DE102020207882A1/de active Pending
• 2021
  • 2021-06-18 WO PCT/EP2021/066567 patent/WO2021259775A1/de unknown
  • 2021-06-18 EP EP21735225.1A patent/EP4172480A1/de active Pending
  • 2021-06-18 JP JP2022580143A patent/JP2023533209A/ja active Pending

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