• 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:
    The invention relates to a method for controlling a waste heat utilization system (20) for a motor vehicle driven by an internal combustion engine (10) via a drive train (14), wherein the waste heat utilization system (20) comprises at least one expander (22) which can be bypassed via a bypass flow path (25) an evaporator (21) and at least one pump (24) for a resource, in particular ethanol, and wherein at least the evaporator (21) in the region of the exhaust system (11) of the internal combustion engine (10) is arranged. The expander (22) which can be operated in a plurality of operating modes performs work in at least one operating mode based on at least one input variable from the group expander speed (n), gear information (GI), coasting information (CI), pressure (p1) and temperature (T1) of the operating equipment upstream of the expander (22) and / or pressure (p2) and temperature (T2) downstream of the expander (22), an operating mode of at least two operating modes (1, 2, 4, 5) of the expander (22 ) and the expander (22) is operated in this operating mode, wherein a first operating mode (1) is associated with a warm-up phase of the expander (22), and a second operating mode (2) is associated with a normal operating phase of the expander (22) in the first operating mode (1) the bypass flow path (25) is opened and in the second operating mode the bypass flow path (25) is closed.
    公开号:AT517913A1
    申请号:T50609/2015
    申请日:2015-07-10
    公开日:2017-05-15
    发明作者:Dipl Ing Glensvig Michael；Dipl Ing Neunteufl Klemens；Ing Dipl (Fh) Oswald Lackner；Ing Dipl (Fh) Gerald Gradwohl；Cococcetta Fabio；Calaon Ivan
    申请人:Avl List Gmbh；Fpt Ind；Iveco Spa；
    IPC主号:
    专利说明:

    The invention relates to a method for controlling a waste heat utilization system for a powered by an internal combustion engine via a drive train motor vehicle, the waste heat recovery system at least one expander, at least one evaporator and at least one pump for a resource, in particular ethanol, and wherein at least the evaporator in the area the exhaust system of the internal combustion engine is arranged. Furthermore, the invention relates to a program logic for carrying out the method.
    The invention further relates to a waste heat utilization system for a motor vehicle driven by an internal combustion engine via a drive train, with a control device for controlling the waste heat recovery system, wherein the waste heat recovery system at least a torque transmissible to the internal combustion engine and bypassable via a bypass flow path, at least one evaporator and at least one pump for a resource, in particular ethanol, and wherein at least the evaporator is arranged in the region of the exhaust system of the internal combustion engine.
    It is known to use waste heat from internal combustion engines. Such known as WHR (Waste Heat Recovery) systems convert the waste heat of the exhaust gas of the internal combustion engine into, for example, mechanical or electrical energy. Such WHR systems are known for example from the publications US 8 635 871 A1, US 2011/0209473 A1 or US 2013/0186087 A1.
    The object of the invention is to ensure an economical, safe and reliable operation of the waste heat recovery system.
    According to the invention, the expander which can be operated in several operating modes performs work in at least one operating mode and, on the basis of at least one input variable from the group expander speed, gear information, coasting information, pressure and temperature of the operating equipment upstream of the expander and / or pressure and temperature downstream the expander is selected by the control device in each case an operating mode of at least two operating modes of the expander and the expander, preferably by controlling at least one arranged in a bypass flow path of the expander bypass valve of
    Expander, is operated in this operating mode, wherein a first operating mode of a warm-up phase of the expander, and a second operating mode is assigned to a normal operating phase of the expander, and wherein in the first operating mode, the bypass valve is opened, and wherein in the second operating mode, the bypass valve is closed. Preferably, the second mode of operation is selected when the pressure and / or temperature of the resource downstream of the expander exceeds a defined value.
    In the first operating mode, the bypass valve is opened, the starting device is deactivated. The equipment is thus passed by the expander, whereby the expander generates no torque. In the second operating mode, the bypass valve is closed, the starting device also deactivated. When the bypass valve is closed, the operating medium flows through the expander, which makes this work.
    Furthermore, it can be provided within the scope of the invention that the waste heat utilization system is operated in a fourth operating mode during at least one sailing operation of the vehicle, during at least one warm-up operation of the internal combustion engine and / or during at least one engine braking operation of the internal combustion engine. Preferably, in the fourth mode of operation, the bypass flowpath is closed to deliver torque from the expander to the driveline of the vehicle when the expander is connected to the driveline, thereby extending the roll phase of the vehicle and conserving fuel. If the expander is connected to an electrical machine, electrical energy can be generated in the fourth operating mode and supplied or stored to the electrical system of the vehicle.
    Sailing operation is a torque-free operation of the vehicle understood in which the clutch between the engine and transmission is opened to reduce the resistance in the drive train.
    Whether a sailing operation of the vehicle is present or not, the control unit of the transmission or the clutch is communicated by means of Ausrollinformationen.
    In the first mode of operation and / or inactive heat utilization system, the expander is bypassed via the bypass flow path when the bypass valve is open.
    In order to achieve high efficiency, it is provided in the invention that the bypass flow path of the expander is closed only when the resource of the waste heat recovery system is in an overheated state. When the resource of the waste heat recovery system is in a non-overheated condition upstream of the expander or when the engine is shut down, the bypass flow path is opened.
    The invention will be described in more detail below with reference to the non-limiting figures.
    It show schematically
    1 shows a waste heat utilization system for an internal combustion engine with a control device according to the invention in a first embodiment,
    2 shows the operating modes of this control device,
    3 shows a waste heat utilization system for an internal combustion engine with a control device according to the invention in a second embodiment and
    4 shows the operating modes of this control device.
    In the illustrated embodiments, functionally identical components are provided with the same reference numerals.
    1 and 3 each show an internal combustion engine 10 with an exhaust system 11 in which an exhaust aftertreatment device 12 - for example, a diesel oxidation catalyst 12, a diesel particulate filter 12b and an SCR catalyst 12c (SCR - selective catalytic reduction) is arranged. The internal combustion engine 10 has a drive train 13 with a crankshaft 14, a clutch 15 and a (gear) transmission 16, which acts on the drive shaft 17 of the drive wheels 18.
    Furthermore, the internal combustion engine 10 has a waste heat utilization system 20 for utilizing the exhaust gas values of the exhaust system 11 of the internal combustion engine 10. The
    Waste heat recovery system 20 includes an evaporator 21, which - with respect to the exhaust gas flow in the exhaust system 11 - downstream of the
    Exhaust after-treatment device 12 is disposed in the region of the exhaust system 11. The example according to the organic Rankine cycle (ORC) functioning waste heat recovery system 20 has downstream of the evaporator 21 in the resource circuit an expander 22 and a capacitor 23, and a pump 24 for the resource. As a resource, for example, ethanol can be used. To bypass the expander 22, an environmental conduit 25 with a bypass valve 26 is provided. The evaporator 21 can be bypassed on the exhaust side via a bypass line 36 and a bypass valve 37, when the exhaust heat for the evaporator 21 is too high, or the system pressure exceeds a defined value, or the cooling system is excessively loaded, or the waste heat recovery system 20 is in a failure mode , or in pure engine operation, without engine brake. The activation of the bypass valve 37 takes place as a function of at least one of the operating parameters from the group of fan power, system pressure, system temperature and mass flow of the operating medium.
    For controlling the waste heat utilization system 20, a control device 30 is provided which has a program logic 31 which is designed to select the most suitable operating mode from a plurality of operating modes 1, 2 or 1, 2, 4, 5 for the operation of the waste heat recovery system 20. The selection of the most suitable operating mode takes place on the basis of at least one of the input variables of the control device 30, namely: Expanderdrehzahl n, gear information Gl, Ausrollinformation CI, pressure pu temperature Ti of the resource upstream of the expander 22, and the pressure p2, and the temperature T2 of Operating means downstream of the expander 22. For the detection of the parameters pressures Pi, p2 and temperatures Ti, T2, pressure sensors 32, 33 and temperature sensors 34, 35 are provided upstream and downstream of the expander 22 in the resource cycle of the waste heat recovery system 20. The pressure sensors 32, 33 and temperature sensors 34, 35 are in communication with the control device 30. The gear information G1 and coast information CI are made available to the control device 30 by suitable encoders in the transmission 16, for example.
    In the simple first embodiment variant shown in FIG. 1, the expander 22 is connected to an electric machine 40 via a shaft 19a.
    The electric machine 40 is in communication with the controller 30, whereby the expander 22 can be started by the electric machine 40.
    2, the operating modes of this first embodiment are shown. The following operating modes can be carried out with the embodiment variant shown in FIG. 1:
    First mode of operation 1 is performed during the warm-up phase of the expander 22; In operating mode 1, the bypass valve 26 is opened, so that the operating medium is guided past the expander 22.
    Second Operating Mode 2: This operating mode 2 is assigned to the normal operation of the expander 22. As soon as the pressure p2 and / or the temperature T2 of the operating medium downstream of the expander 22 exceeds a defined value or defined values, the operating mode 2 is activated.
    Optionally, a fourth operating mode 4 can be run during the sailing operation of the vehicle, wherein electrical energy can be generated by the electric machine and supplied to the electrical system.
    The second embodiment variant shown in FIG. 3 differs from FIG. 1 in that the expander 22 is integrated into the transmission 16 or is drive-connected thereto via a shaft 19b. Optionally, a shiftable clutch 28 may be disposed between the transmission 16 and the expander 22.
    4, the operating modes of this first embodiment are shown. The following operating modes can be carried out with the embodiment variant shown in FIG. 3:
    First mode of operation 1 is performed during the warm-up phase of the expander 22; In operating mode 1, the bypass valve 26 is opened, so that the operating medium is guided past the expander 22.
    Second Operating Mode 2: This operating mode 2 is assigned to the normal operation of the expander 22. As soon as the pressure p2 and / or the temperature T2 of the
    Operating means downstream of the expander 22 exceed a defined value or defined values, the operating mode 2 is activated.
    Fourth Operating Mode 4: This operating mode 4 is used during the sailing operation, the warm-up operation, and / or the engine braking operation of the internal combustion engine 10. In sailing operation, the vehicle rolls without torque transmission between internal combustion engine 10 and drive wheels 18, generally with the clutch 15 open. The bypass valve 26 is closed in operating mode 4 in order to transmit torque from the expander 22 to the internal combustion engine 10. As a result - especially when the clutch 15 is open - the fuel consumption at idle reduced and / or extended the rolling phase of the vehicle. If the expander 22 is connected to an electric machine 40, electrical energy can be generated in the fourth operating mode and supplied or stored to the electrical system of the vehicle. Fifth Operating Mode 5: This operating mode 5 is used to start the expander 22 via internal or external starting device 27.
    Alternatively, starting may also be via a self-starting mechanism of the expander 22 (without the fifth operating mode 5).
    In order to avoid that the expander 22 can be operated at overspeed and thereby damaged, the control device 30 provides special security measures. Thus, the bypass valve 26 is closed only when the resource is in an overheated condition, that is, for example, when the resource ethanol is in the gas phase.
    权利要求:
    Claims (16)
    [1]
    A method for controlling a waste heat utilization system (20) for a motor vehicle driven by an internal combustion engine (10) via a drive train (14), wherein the waste heat utilization system (20) comprises at least one expander (22), at least one evaporator (21) and at least one pump ( 24) for a resource, in particular ethanol, and wherein at least the evaporator (21) in the region of the exhaust system (11) of the internal combustion engine (10) is arranged, characterized in that the operable in a plurality of operating modes expander (22) in at least one Operating mode, and that due to at least one of input variables from the group Expander speed (n), gear information (Gl), Ausrollinformation (CI), pressure (pi) and temperature (Ti) of the resource upstream of the expander (22) and / or pressure (p2) and temperature (T2) downstream of the expander (22) by the control device (30) each have an operating mode of at least two operating modes (1, 2, 4, 5) of the expander (22) is selected and the expander (22), preferably by driving at least one in a bypass flow path (25) of the expander (22) arranged bypass valve (26) of the expander (22) is operated in this mode of operation wherein a first operating mode (1) is associated with a warm-up phase of the expander (22), and a second operating mode (2) is associated with a normal operating phase of the expander (22), and wherein in the first operating mode (1) the bypass valve (26) is opened, and wherein in the second operating mode, the bypass valve (26) is closed.
    [2]
    2. The method according to claim 1, characterized in that the second operating mode (2) is selected when the pressure (p2) and / or the temperature (T2) of the operating means downstream of the expander (22) exceeds a defined value.
    [3]
    3. The method according to claim 1 or 2, characterized in that the expander (22) in a fourth operating mode (4) during at least one sailing operation of the vehicle during at least one warm-up operation of the internal combustion engine (10) and / or at least one engine braking operation of the internal combustion engine ( 10) is operated.
    [4]
    4. The method according to claim 3, characterized in that in the fourth operating mode (4) of the bypass flow path (25) is closed.
    [5]
    5. The method according to claims 1 to 4, characterized in that the waste heat utilization system (20) in a fifth operating mode (5) during at least one start phase of the expander (22) is operated.
    [6]
    6. The method according to claim 5, characterized in that the expander (22) by motor operation of the expander (22) connected to the electric machine (27) is started.
    [7]
    7. The method according to claim 5, characterized in that the expander (22) by transmitting torque from the drive train (14) of the internal combustion engine (10) is started on the expander (22).
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that the expander (22) emits work in at least one operating mode to a with the expander (22) connected electrical machine (40).
    [9]
    9. The method according to any one of claims 1 to 8, characterized in that the expander (22) emits work in at least one operating mode to the drive train (13).
    [10]
    10. The method according to any one of claims 1 to 9, characterized in that the expander (22) in the first operating mode (1) and / or inactive waste heat recovery system (20) is separated from the power take-off shaft (19).
    [11]
    A method according to any one of claims 1 to 10, characterized in that the bypass flow path (25) of the expander (22) is closed when the resource of the waste heat recovery system (20) is in an overheated condition.
    [12]
    12. Waste heat utilization system (20) for a motor vehicle (10) via a drive train (13) driven motor vehicle, with a control device (30) for controlling the waste heat recovery system (20), wherein the waste heat recovery system (20) at least one torque to the internal combustion engine (10 ) at least one evaporator (21) and at least one pump (24) for a resource, in particular ethanol, and wherein at least the evaporator (21) in the region of the exhaust system ( 11) of the internal combustion engine (10) is arranged, characterized in that the operable in a plurality of operating modes expander (22) performs work in at least one operating mode, and that due to at least one input variable from the group expander speed (n), gear information (Gl), Coasting information (CI), pressure (pi) and temperature (Ti) of the resource upstream of the expander (22) and / or Pressure (p2) and temperature (T2) downstream of the expander (22) by the control device (30) each an operating mode of at least two operating modes (1, 2, 3, 4, 5) of the expander (22) is selectable and the expander ( 22) - preferably by controlling at least one in a bypass flow path (25) of the expander (22) arranged bypass valve (26) - in this operating mode is operable, wherein a first operating mode (1) a warm-up phase of the expander (22), and a second operating mode (2) is associated with a normal operating phase of the expander (22), and wherein in the first operating mode (1) the bypass flow path (25) is opened and in the second operating mode (2) the bypass flow path (25) is closed.
    [13]
    13. waste heat utilization system (20) according to claim 12, characterized in that a fourth operating mode (4) is associated with at least one sailing operation of the motor vehicle, at least one warm-up operation of the internal combustion engine (10) and / or at least one engine braking operation of the internal combustion engine (10), preferably in the fourth operating mode (4), the bypass flow path (25) is closable.
    [14]
    14. waste heat recovery system (20) according to claim 12 or 13, characterized in that the expander (22) with at least one electric machine (40) is drive-connected or drive-connected, preferably in a at least one start phase of the expander (22) associated fifth operating mode of Expander (22) can be started by motorized operation of the electric machine (40).
    [15]
    15. waste heat utilization system (20) according to claim 12 or 13, characterized in that the expander (22) to the drive train (14) is drive-connected or drive-connected, preferably in a at least one start phase of the expander (22) associated fifth operating mode of the expander ( 22) by transferring torque from the drive train (14) to the expander (22) is bootable.
    [16]
    16. Program logic for carrying out the method according to one of claims 1 to 11.
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    同族专利:
    公开号 | 公开日
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20090071156A1|2007-09-14|2009-03-19|Denso Corporation|Waste heat recovery apparatus|
    JP2014231740A|2011-09-26|2014-12-11|株式会社豊田自動織機|Waste heat utilization device|
    JP5804879B2|2011-09-30|2015-11-04|日産自動車株式会社|Waste heat utilization equipment|
    WO2014123572A1|2013-02-06|2014-08-14|Volvo Truck Corporation|Method and apparatus for heating an expansion machine of a waste heat recovery apparatus|
    DE102013112382A1|2013-11-11|2015-05-13|Fev Gmbh|Method and device for using a waste heat of an internal combustion engine and vehicle|DE102016207978A1|2016-05-10|2017-11-16|Robert Bosch Gmbh|Waste heat utilization assembly of an internal combustion engine and method for operating the waste heat recovery assembly|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50609/2015A|AT517913B1|2015-07-10|2015-07-10|METHOD FOR CONTROLLING A HEAT EXCHANGE SYSTEM FOR A MOTOR VEHICLE|ATA50609/2015A| AT517913B1|2015-07-10|2015-07-10|METHOD FOR CONTROLLING A HEAT EXCHANGE SYSTEM FOR A MOTOR VEHICLE|
    US15/743,478| US20180202311A1|2015-07-10|2016-07-11|Method for controlling a waste-heat utilization system for a motor vehicle|
    CN201680039564.3A| CN107835890A|2015-07-10|2016-07-11|For the method for the waste heat utilization system for controlling motor vehicles|
    EP16740954.9A| EP3320191A1|2015-07-10|2016-07-11|Method for controlling a waste-heat utilization system for a motor vehicle|
    PCT/AT2016/050248| WO2017008095A1|2015-07-10|2016-07-11|Method for controlling a waste-heat utilization system for a motor vehicle|
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