• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    method for activating the speed control function in a vehicle equipped with a hybrid drive, especially an industrial or commercial vehicle The present invention describes a method for activating the cruise speed function in a vehicle equipped with a hybrid drive, comprising at least one drive primary and an electric drive. the method comprises the steps of: - cyclical verification of the possibility of activating the cruise speed function; if positive – activation of the electric drive of the type “electric cruise control” (e1ccelcc), and deactivation of the primary drive, if a cyclical check of the conditions of activation of the electric drive is positive; on the other hand- activation of the primary drive type (encc), and deactivation of the electric drive.
    公开号:BR112013014092B1
    申请号:R112013014092
    申请日:2011-12-06
    公开日:2020-04-14
    发明作者:Aimo Boot Marco
    申请人:Iveco Spa；
    IPC主号:
    专利说明:

    Descriptive report of the invention patent for: “METHOD FOR ACTIVATION OF THE SPEED CONTROL FUNCTION IN A VEHICLE EQUIPPED WITH HYBRID ACTIVATION, ESPECIALLY AN INDUSTRIAL OR COMMERCIAL VEHICLE.
    Field of Application of the Invention [0001] The present invention relates to a method for activating the cruise control function in a vehicle equipped with a hybrid drive, especially in an industrial or commercial vehicle.
    Description of the Prior Art [0002] The cruise speed control function, as it is known, maintains a constant vehicle speed, by means of a control usually activated manually, which works by controlling the operation of the internal combustion engine.
    [0003] If this function is adopted in a vehicle equipped with a hybrid drive system, which usually includes at least one internal combustion engine and an electric generator motor, the problem of controlling the functioning of the hybrid drive system originates, during the activation stages of the function itself, in order to optimize the reduction of fuel consumption and vehicle noise and the increase in driving comfort, which characterize this drive system.
    Summary of the Invention [0004] Therefore, the objective of the present invention is to provide a method for activating the cruise control function in a mobile vehicle, especially
    Petition 870190110188, of 10/29/2019, p. 28/66
    2/12 an industrial or commercial vehicle, suitable to overcome all the disadvantages mentioned above.
    [0005] The objective of the present invention, according to claim 1, is a method for activating the cruise control function in a vehicle equipped with the hybrid drive, especially an industrial or commercial vehicle, said hybrid drive comprising at least one primary drive and one electric drive, the method comprising, when that cruise control function is required, the steps of:
    - cyclical verification of the possibility of activating the cruise control function, if positive;
    - activation of said electric drive of the type electric speed control and deactivation of said primary drive, if a cyclic check of the conditions of activation of the electric drive is positive, otherwise;
    - activation of said primary drive of the type speed control-motor speed and deactivation of said electric drive.
    [0006] The purpose of the present invention is also a vehicle, especially an industrial or commercial vehicle, comprising control means configured in order to carry out the method.
    [0007] In particular, the object of the present invention is a method for activating the cruise control function in a vehicle equipped with a drive
    Petition 870190110188, of 10/29/2019, p. 29/66
    3/12 hybrid, especially an industrial or commercial vehicle, as described more fully in the claims, which are an integral part of this description.
    Brief Description of the Figures [0008] Other purposes and advantages of the present invention will become clear from the following detailed description of a preferred modality (and its alternative modalities) and the accompanying drawings, which are only illustrative and not limiting, in which:
    Figure 1 shows a general scheme of a hybrid drive system for a vehicle that applies the method according to the present invention;
    Figure 2 shows a block diagram of an electronic system to control the operation of the different elements in Figure 1;
    Figures 3 and 4 show flowcharts of the operations that characterize the method of the present invention.
    Detailed Description of the Invention [0009] A non-limiting example of a hybrid drive system for an industrial or commercial vehicle of the type known in the art, in which it is possible to apply the present invention, is shown in figure 1.
    [0010] The system is characterized by a parallel hybrid drive system, comprising a primary drive system formed by an internal combustion engine 1, an electric generator engine 2, equipped with a DC / AC inverter 4 and a battery of high voltage electric drive 5, a single clutch unit 3 placed between the combustion engine and the electric motor and a system
    Petition 870190110188, of 10/29/2019, p. 30/66
    4/12 transmission 6 comprising an automated manual transmission. The latter is substantially a mechanical gearbox in which electric actuators are present and are controlled by a specially proportioned control unit, which manages gear and shift control requests, in accordance with engine drive management strategies internal combustion and electric motor.
    [0011] An electronic system for controlling the functioning of the different elements of figure 1 is present. For example, the system may include, as shown in figure 2, an electronic vehicle control unit VCU, which receives at least signals from the accelerator pedal sensors.
    [0012] An electronic system to control the functioning of the different elements of figure 1 is present. For example, the system may include, as shown in figure 2, an electronic vehicle control unit VCU that receives at least the signals from the ACC accelerator pedal and BRK brake pedal sensors and a signal from a switch, which can be manually activated, which indicates activation of the DC cruise speed control function. An electronic control unit of the HCU hybrid drive system controls the operation of the internal combustion engine by means of an ECU control unit and the operation of the electric generator engine by means of an MGC control unit. The HCU unit also receives data regarding at least the battery charge status of the BCU battery control unit and the indication of the
    Petition 870190110188, of 10/29/2019, p. 31/66
    5/12 road tilt from an RSS road tilt sensor. The HCU unit, preferably, has in its disposal indications and data derived from an NS vehicle navigation system, preferably of the three-dimensional type, comprising both the instantaneous indication and the predictive indication of road inclination, and the weight indication vehicle weight assessment system of the vehicle when moving.
    [0013] The method for activating the cruise speed control function, which is the object of the invention, can be activated by means of an electronic control system like the one shown in figure 2. According to this method, at the instant when the cruising speed control function CC is activated, the vehicle maintains the speed set preferably by using the electric motor, better if it is of the generator motor type, if all predetermined permit conditions exist, which are described below in an example and, secondly, by the use of the traditional internal combustion engine, when the electric motor alone is no longer able to ensure that the required target speed is maintained.
    [0014] The method can be implemented in any vehicle equipped with a hybrid drive system, in which at least two propulsion systems are present and in which at least one electric drive and a primary drive are present.
    [0015] With reference to figure 3, a method modality is described.
    Petition 870190110188, of 10/29/2019, p. 32/66
    6/12 [0016] When the CC cruise speed control function is activated manually, for example, by pressing the corresponding button (CC ON), a sequence of tests checks whether the conditions are met: if all these conditions are met , the Electric Cruise Speed Control function ElCC is activated and the activation in the cruise speed control mode is ensured by the electric motor alone, otherwise, even if only one of these conditions is not met, the Cruise Speed Control function EnCC Motor is activated and the drive in cruise control mode is ensured in the traditional way, for example, by means of the primary drive alone, with the internal combustion engine.
    [0017] The conditions to be verified are as follows:
    - If the vehicle speed> VS, where VS is a vehicle speed threshold below which the cruise control function cannot be activated (block NO CC), for example, VS = 25 km / h.
    - If the vehicle is moving forward, namely, if the transmission is in Reverse (R): if the car is reversing, the cruise speed control function (NO CC block) cannot be activated.
    - If the road slope is less than a threshold value which is preferably variable within certain limits, namely, if the Road Slope <(Pmax ± Pmax_Hyst), where Pmax is the nominal upper limit of the road slope Road (for example, Pmax = 8%), and Pmax_Hyst
    Petition 870190110188, of 10/29/2019, p. 33/66
    7/12 is a percentage variation tolerated around the Pmax value (for example, Pmax_Hyst = ± 1%): if the slope exceeds that limit, the Motor Cruise Speed Control function is activated. This tolerated percentage variation of the slope threshold is necessary to avoid a repeated switching between ON and OFF of the cruise control activation function for minimal variations in the Road slope, or also to avoid continuous and repeated switching between Electrical Control Cruise Speed Control and EnCC Engine Cruise Speed Control. The road slope value must be taken as an absolute value, namely, the road slope can be positive (slope) or negative (slope).
    - If the target speed established for activating the cruise control function Vset is less than a speed threshold value Vmax, which is preferably variable within certain limits, namely, if Vset <(Vmax ± Vmax_Hyst), where Vmax is the maximum speed (for example, Vmax = 65 km / h, which does not correspond to the maximum speed of the vehicle, but is correlated with the maximum power limit of the generator engine) above which it is not possible to activate the ElCC Cruise Electric Control function, but only the EnCC and Vmax_Hyst Engine Cruise Control function is a tolerated percentage variation around the Vmax value (for example, Vmax_Hyst = ± 5 km / h), with equivalent considerations with relation to Pmax_Hyst.
    - If the charge status of the SOC drive battery
    Petition 870190110188, of 10/29/2019, p. 34/66
    8/12 exceeds a threshold state of charge which is preferably variable within certain limits, namely, if SOC> (SOC s ± SOC_Hyst), where SOC is the percentage that expresses the instantaneous charge level of the battery activation, SOCs is the load state threshold below which it is not possible to activate the Electric Cruise Speed Control function ElCC, but only the EnCC Motor Cruise Speed function (for example, SOC s = ± 4% ), and SOC_Hyst is a tolerated percentage change around the SOCs value (for example, SOC_Hyst ± 4%), with equivalent considerations with respect to Pmax_Hyst and Vmax_Hyst.
    - If the instantaneous power demand for the drive system is less than a P LIMIT-Mot power limit value that can be provided by the electric motor (motor constructive parameter), namely, if Power Request <P LIMIT- Mot , otherwise the EnCC Engine Cruise Control function is activated.
    [0018] It should be noted that if the indications and data that derive from the three-dimensional NS vehicle navigation system are available, and include both the instantaneous indication and the predictive indication of the road inclination, and the indication of the vehicle weight of a VPE vehicle weight assessment system when in motion, additional functionality is possible. The speed value Vmax, the charge status of the SOCs battery and its tolerated percentage variation SOC_Hyst, the threshold speed value VS can be dynamically changed as a function of the road conditions and the route defined by the navigation system or by the user itself, being possible
    Petition 870190110188, of 10/29/2019, p. 35/66
    9/12 assume for how long it will be possible to keep the cruise control function operating. In this case, the RSS slope sensor may not be used, since this piece of information is provided by the navigation system, which is equipped with three-dimensional cartography.
    [0019] All previous conditions are checked continuously and iteratively, until the cruise control function CC is deactivated.
    [0020] When the Electric Cruise Speed Control function ElCC is activated, the internal combustion engine of the primary drive can be stopped or run at idle, according to the configuration of the drive system.
    [0021] When the EnCC Engine Cruise Control function is activated, the electric motor can be controlled to work as a generator and is capable of providing negative torque to decelerate the vehicle when the speed exceeds the threshold value upper Vset. This negative torque can be required, for example, by the HCU control unit, when the Electric Cruise Speed Control function is activated. This situation is typical of a vehicle traveling on a road with a negative slope. Thus, it is possible to obtain a recovery of the kinetic energy in the electrical energy that is stored in the high voltage battery of the hybrid system. Otherwise, this contribution will be dissipated in the form of heat in the service brakes and the vehicle's braking will be performed exclusively manually by the driver, when
    Petition 870190110188, of 10/29/2019, p. 36/66
    10/12 the vehicle speed exceeds the Vset limit with the engine torque equal to zero.
    [0022] With reference to figure 4, the sequence of the activation steps of the Electric Cruise Control Speed function ElCC and of the Cruise Control Speed function EnCC is described below, especially with respect to the hybrid drive example described above with reference to figure 1.
    [0023] When the Electric Cruise Control ElCC function is activated, the HCU control unit determines the opening of gear 3, if the clutch is closed, when the function is activated, otherwise it remains open; then, it changes from gear 6 to neutral (position N); after that, activates the RPM control and torque distribution of the generator motor 2. In this situation, the vehicle is driven by the electric generator motor alone.
    [0024] When the Electric Cruise Control ElCC function is activated, the HCU control unit keeps the gear in motion (position D); then, determines the closing of the clutch, if the clutch is open, when the function is activated, otherwise, it keeps it closed; after that, activates the rpm control and torque distribution of the internal combustion engine 1. In this situation, the vehicle is driven by the primary drive (internal combustion engine) alone.
    [0025] During the transition from the Electric Cruise Control ElCC function to the EnCC Motor Cruise Control function, the HCU control unit changes to drive (position D), the
    Petition 870190110188, of 10/29/2019, p. 37/66
    11/12, determines the closing of the clutch in order to activate the primary drive (internal combustion engine) and, finally, activates the rpm control and torque distribution of the internal combustion engine.
    [0026] During the transition from the EnCC Cruise Speed Control function to the ElCC Cruise Speed Control function, the HCY control unit determines the clutch opening, then changes to neutral (position N) in order to activate the electric motor by means of rpm and torque control.
    [0027] The transitions between the two modes are determined by the continuous verification of the conditions described above. The method of the present invention can be advantageously carried out by means of computer programs loaded in the various electronic control units of the vehicle, which comprise means of program code, performing one or more steps of said method, when said programs are in operation. running on a computer. Therefore, the scope of the present patent is also intended to cover said computer programs and computer-readable media, which comprise a recorded message, those computer-readable media comprising the program code media for carrying out one or more steps of that method, when said programs are run on a computer.
    [0028] It will be evident to the person skilled in the art that other alternative and equivalent modalities of the invention can be designed and reduced in practice, without departing from the scope of the invention.
    Petition 870190110188, of 10/29/2019, p. 38/66
    12/12 [0029] From the description presented above it will be possible for the person skilled in the art to carry out the invention without needing to describe new details of the construction.
    权利要求:
    Claims (5)
    [1]
    1. Method for activating the speed control function in a vehicle equipped with a hybrid drive, especially an industrial or commercial vehicle, said hybrid drive comprising at least one primary drive (1) and one electric drive (2), the method comprising , when the aforementioned speed control function is necessary, the steps of: - cyclic verification of the possibility of activating said speed control function, if positive - activation of said electric drive (2) of the "electric speed control" type ( ElCC) and deactivation of said main drive (1), if a cyclic check of the activation conditions of the electric drive (2) is positive, otherwise - activation of said primary drive (1) of the type "Cruise Control of Motor Speed "(EnCC) and deactivation of the referred electric drive (2), in which the referred cyclical verification of the possi Possibility of activating the speed control function comprises: - checking if the vehicle speed is above a speed limit value (VS); - check if the vehicle is moving forward, where - if the road has a slope below a slope threshold value (Pmax); - if the target speed (Vset) defined for the activation of the cruise control function is less than a speed limit value (Vmax); - if the state of charge (SOC) of the battery for driving said electric drive (2) is greater than a threshold value for state of charge (SOCs); - if the instantaneous power required for said electric drive (2) is less than a power limit value (PLiMiT-Mot) delivered by said electric drive (2). the method characterized by the fact that one or more values of the said slope thresholds (Pmax), the speed threshold value (Vmax), the load state threshold value (SOCs), the energy distribution limit value (PLiMiT- Mot), are variables within respective percentage variations tolerated around the respective values, in which the percentage of variation (SOC_Hyst) of the battery charge status (SOCs), is variable according to a function of the indications and data from a navigation system vehicle (NS), of the three-dimensional type, comprising both an instantaneous indication and a predictive indication of the inclination of the road, and an indication of the vehicle's weight.
    [2]
    2. Method for activating the speed control function, according to claim 1, characterized by the fact that at least one of the said speed threshold values (Vmax), battery charge status (SOCs), speed threshold (VS), it varies according to a function of the indications and data coming from a vehicle navigation system (NS), of the three-dimensional type, comprising both an instantaneous indication and a predictive indication of the inclination of the road, and an indication of the vehicle's weight.
    [3]
    3. Method for activating the speed control function, according to claim 1 or 2, characterized by the fact that, when the "Eletric Cruise-Control" (ElCC) type is activated, an internal combustion engine of the main drive (1) is stopped or runs at idle.
    [4]
    4. Method for activating the speed control function, according to any one of claims 1 to 3, characterized by the fact that, when said main drive (1) of the type "Motor Cruise Speed Control" ( ENCC) is activated, the referred electric drive (2) is controlled so that it provides a negative torque, in order to decelerate the vehicle when the speed exceeds the target speed value (Vset).
    [5]
    5. Industrial or commercial vehicle characterized by comprising a hybrid drive system comprising at least one main drive (1), one electric drive (2), at least one clutch (3) between said main drive (1) and electric drive (2 ), and an automated manual transmission (6), and comprising control means configured to carry out the method, as defined in any of the preceding claims.
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    法律状态:
    2018-12-18| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-07-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-03-03| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-03-17| B09X| Republication of the decision to grant [chapter 9.1.3 patent gazette]|
    2020-04-14| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 06/12/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP10425373.7A|EP2460704B1|2010-12-06|2010-12-06|Method for actuating the cruise control function in a vehicle equipped with hybrid driving, especially an industrial or commercial vehicle|
    PCT/EP2011/071879|WO2012076507A1|2010-12-06|2011-12-06|Method for actuating the cruise control function in a vehicle equipped with hybrid driving, especially an industrial or commercial vehicle|
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