• 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:
    SUMMARY The invention relates to a method for recovering energy from a hydrodynamic additional brake (20; 120) in the form of a so-called retarder, comprising the step of: driving (S1) a hydraulic motor device (30; 170) by means of a hydraulic fluid flow (0). ) from said auxiliary brake (20; 120); and drive (S2) a compressor (40; 180) by means of energy generated by means of said hydraulic motor device (30; 170). The invention also relates to a system for recovering energy from a hydrodynamic additional brake. The invention further relates to a motor vehicle. (Fig. 5)
    公开号:SE1150021A1
    申请号:SE1150021
    申请日:2011-01-14
    公开日:2012-07-15
    发明作者:Carl Tengstedt；Patrick Hanstad
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    Heat exchanger, where also a fan of the heat exchanger is driven by means of the hydraulic energy for cooling the retarder. In this case, the retarder's own energy is used to cool it, which results in an energy-efficient system.
    OBJECT OF THE INVENTION An object of the present invention is to provide a method for recovering energy from an auxiliary brake which results in simple and cost-effective energy savings.
    A further object of the present invention is to provide a system for recovering energy from an auxiliary brake which results in simple and cost-effective energy savings.
    SUMMARY OF THE INVENTION These and other objects, which appear from the following description, are accomplished by a method and system for recovering energy from an auxiliary brake, as well as a motor vehicle of the type initially indicated and further having the features set forth in the characterizing part of the appended independent claims. 1, 5 and 9. Preferred embodiments of the method and system are defined in the appended dependent claims.
    According to the invention, the objects are achieved with a method for recovering energy from an auxiliary brake in the form of a so-called hydrodynamic retarder, comprising the steps of: driving a hydraulic motor device by means of a hydraulic fluid flow from said auxiliary brake; and driving a compressor by means of energy generated by means of said hydraulic motor device. This enables simple and cost-effective energy recovery by using standard components such as additional brakes in the form of a hydrodynamic retarder and compressor. In vehicles where the auxiliary brake in the form of hydrodynamic retarder and compressor are existing components, only minor modifications are required to drive the hydraulic motor device by means of hydraulic fluid flow from the auxiliary brake and then drive the compressor by the hydraulic motor device. In this way, the compressor is used more energy efficiently, which means that the fuel consumption of the vehicle can be reduced. This consequently makes it possible to top up the vehicle's compressed air system when the auxiliary brake is activated, ie. at each braking by means of the auxiliary brake.
    According to one embodiment, the method comprises the step of cooling said hydraulic fluid flow before driving said hydraulic motor device.
    In this way, the hydraulic medium is used when it is cooled, which means that unwanted heating of components is avoided.
    According to one embodiment, the method comprises the step of operating said hydraulic motor device before cooling said hydraulic fluid flow.
    In this way an efficient drive of the hydraulic motor device is obtained since the hydraulic fluid flow has a relatively high pressure, i.e. pressure drop across the cooling device is avoided.
    According to one embodiment, the method comprises the step of driving said hydraulic motor device by means of both cooled and uncooled hydraulic medium.
    In this way, hydraulic medium flow and hydraulic medium temperature can be optimized for operation of the hydraulic motor device.
    According to the invention, the objects are also achieved with a system for recovering energy from an auxiliary brake in the form of a so-called hydrodynamic retarder, wherein a hydraulic motor device is arranged to be driven by means of a hydraulic fluid flow from said auxiliary brake, and means for driving a compressor by means generated by said auxiliary brake. hydraulic motor device.
    This enables simple and cost-effective energy recovery in that standard components such as additional brakes in the form of hydrodynamic retarder form of and compressor are used. In vehicles where the auxiliary brake in hydrodynamic retarder and compressor are existing components, only minor modifications are required to drive the hydraulic motor device by means of hydraulic fluid flow from the auxiliary brake and then drive the compressor by the hydraulic motor device. In this way, the compressor is used more energy efficiently, which means that the fuel consumption of the vehicle can be reduced. This consequently makes it possible to top up the vehicle's compressed air system when the auxiliary brake is activated, ie. at each braking by means of the auxiliary brake.
    According to an embodiment, the system further comprises a cooling device for said hydraulic medium, wherein said hydraulic motor device is intended to be driven by means of hydraulic medium before it is cooled by means of said cooling device. In this way an efficient drive of the hydraulic motor device is obtained because the hydraulic fluid flow has a relatively high pressure, i.e. pressure drop across the cooling device is avoided.
    According to an embodiment of said system, said hydraulic motor device is intended to be driven by means of hydraulic medium after it has been cooled by means of said cooling device. In this way, the hydraulic fluid flow is utilized when it is cooled, which means that undesired heating of components is avoided.
    According to an embodiment of said system, said hydraulic motor device is intended to be operated by means of hydraulic medium cooled by means of said cooling device as well as by means of hydraulic medium which is not cooled by means of said cooling device. In this way, hydraulic medium flow and hydraulic medium temperature can be optimized for operation of the hydraulic motor device.
    DESCRIPTION OF THE DRAWINGS The present invention will be better understood with reference to the following detailed description read in conjunction with the accompanying drawings, in which like reference numerals refer to like parts throughout the many views, and in which: Fig. 1 schematically illustrates a side view of a motor vehicle; Fig. 2 schematically illustrates a system for recovering energy from a hydrodynamic auxiliary brake according to an embodiment of the present invention; Fig. 3 schematically illustrates a part of a system for recovering energy from a hydrodynamic auxiliary brake according to an embodiment of the present invention; Fig. 4 schematically illustrates a part of a system for recovering energy from a hydrodynamic auxiliary brake according to an embodiment of the present invention; Fig. 5 schematically illustrates a system for recovering energy from a hydrodynamic auxiliary brake according to an embodiment of the present invention; Fig. 6 schematically illustrates a part of a system for recovering energy from a hydrodynamic auxiliary brake according to an embodiment of the present invention; and Fig. 7 schematically illustrates a method of recovering energy from a hydrodynamic auxiliary brake according to an embodiment of the present invention.
    DESCRIPTION OF EMBODIMENTS Fig. 1 of the present invention. The exemplary vehicle 1 consists of a heavy schematically illustrates a side view of a motor vehicle 1 according to vehicle in the form of a truck. Vehicle 1 can alternatively be a bus, a light truck or a car. The motor vehicle 1 comprises a system for recovering energy from an auxiliary brake according to the present invention. Fig. 2 schematically illustrates a system 10 for recovering energy from a hydrodynamic auxiliary brake according to an embodiment of the present invention.
    The system 10 comprises a vehicle drive unit 12 which according to a variant consists of an internal combustion engine and a gearbox connected to the internal combustion engine with an output shaft 14.
    The system comprises an auxiliary brake in the form of a hydrodynamic retarder 20.
    The retarder 20 is connected to the vehicle drive unit 12 via said output shaft 14, the drive unit 12 being arranged to drive the retarder 20 by means of said drive unit. The retarder comprises a hydraulic medium 0 which according to a variant consists of an oil medium. The retarder comprises a space 22 for said hydraulic medium O. According to a variant, said space 22 constitutes an oil sump.
    A braking torque is arranged to be generated hydrodynamically of the retarder 20 by means of the hydraulic medium / oil medium 0 from the hydraulic medium space / oil sump 22. The hydraulic medium / oil medium O is arranged to, when the retarder 20 is activated, rotate so that a braking torque occurs. In this case, the hydraulic medium / oil medium 0 is pressurized and circulated in a line 24 of the retarder 20, whereby a hydraulic medium flow is formed in said line.
    The system further comprises a hydraulic motor device 30. The hydraulic motor device is arranged to be driven by means of said hydraulic media flow.
    The system further comprises a compressor 40 for supplying pressurized air to the vehicle's compressed air system 50. The hydraulic motor device 30 is connected to the compressor 40, the compressor 40 being arranged to be driven by energy generated by said hydraulic motor device 30.
    The hydraulic motor device 30 and the compressor 40 form a subsystem A of the system for recovering energy from said auxiliary brake. Fig. 3 schematically illustrates a subsystem A1 of a system for recovering energy from a hydrodynamic auxiliary brake according to an embodiment of the present invention. The subsystem A1 according to this embodiment differs from the subsystem A according to Fig. 2 in that it comprises an additional compressor and a compressor drive device connected thereto.
    The subsystem consequently comprises a hydraulic motor device 30 arranged to be driven by means of a hydraulic medium fl of a retarder, for example according to Fig. 2.
    The subsystem A1 further comprises a first compressor 40a for supplying pressurized air to a vehicle compressed air system 50 and a second compressor 40b for supplying compressed air to said compressed air system 50. The subsystem A1 further comprises a compressor drive device 60. The first compressor 40a is arranged to be operated by energy generated by said hydraulic motor device 30. The second compressor device 40b is arranged to be driven by said compressor drive device 60.
    The compressor drive device 60 may be any suitable compressor drive device such as an electric compressor drive device or a mechanical compressor drive device. The compressor drive device is a variant in which, according to the internal combustion engine of the motor vehicle, the compressor according to a variant is driven via the flywheel of the internal combustion engine.
    The subsystem includes an electronic control unit 80 for controlling the supply of compressed air to the vehicle's compressed air system. The electronic control unit 80 is via a link 81 signal connected to the hydraulic motor device 30, the electronic control unit 80 being arranged to detect whether the hydraulic motor device 30 is in operation or not, i.e. if the retarder is activated.
    The electronic control unit 80 is arranged via the link 81 to receive a signal from the hydraulic motor device 30 representing hydraulic motor operating data. The electronic control unit 80 is signal connected via a link 82 to said compressor drive device 60. The electronic control unit 80 is arranged to determine, based on said hydraulic motor operating data, whether said compressor drive device 60 is to be activated and to what extent.
    The electronic control unit 80 is arranged that when said hydraulic motor drive data falls below a predetermined threshold value, signals sent to the compressor drive device 60 representing activation data for activating the compressor drive device 60 for operating the second compressor 40b.
    Hereby, the second compressor 40b is used only to the extent that air is to be supplied to compressed air system 50 so that a desired amount of compressed air is obtained. When necessary to sufficiently drive the vehicle hydraulic motor device 30 by the hydraulic medium, the first compressor 40a will supply compressed air to the compressed air system 50. If this is sufficient for the desired amount of compressed air to be present in the compressed air system 50, the second compressor 40b need not be activated. the compressor drive device 60 then does not consume energy.
    Fig. 4 schematically illustrates a subsystem A2 of a system for recovering energy from a hydrodynamic auxiliary brake according to an embodiment of the present invention. The subsystem A2 according to this embodiment differs from the subsystem A according to Fig. 2, inter alia, by a coupling means arranged to be coupled for operation of the compressor by means of the hydraulic motor device and / or a compressor drive device.
    The subsystem arranged to be driven by means of a hydraulic fluid flow of an A2 consequently comprises a hydraulic motor device 30 retarder, for example according to Fig. 2. The subsystem A2 further comprises a compressor 40 for supplying pressurized air to a vehicle compressed air system 50. The subsystem A2 further comprises a compressor drive device 60 and the hydraulic motor device 60. the compressor is connected to a coupling means 70 arranged to connect the 40 and / or the compressor drive device 60 to the compressor 40 for operation of the compressor 40. the hydraulic motor device 30 to the compressor Depending on the application and function, the compressor drive device may be any suitable compressor drive device such as a electric compressor drive device or a mechanical compressor drive device. The compressor drive device is according to a variant of the internal combustion engine of the motor vehicle, wherein the compressor according to a variant is driven via the flywheel of the internal combustion engine.
    The subsystem A2 comprises an electronic control unit 90 for controlling the supply of compressed air to the vehicle's compressed air system 50. The electronic control unit 90 is via a link 91 signal connected to the hydraulic motor device 30, the electronic control unit 90 being arranged to detect whether the hydraulic motor device 30 is in operation. whether the retarder is activated.
    The electronic control unit 90 is arranged via the link 91 to receive a signal from the hydraulic motor device 30 representing hydraulic motor operating data.
    The electronic control unit 90 is signal connected via a link 92 to said compressor drive device 60. The electronic control unit 90 is arranged to determine, based on said hydraulic motor operating data, whether said compressor drive device 60 is to be activated and to what extent.
    The electronic control unit 90 is signal connected via a link 93 to said coupling means 70. The electronic control unit 90 is arranged to determine based on said hydraulic motor operating data whether said coupling means 70 should engage the hydraulic motor device 30 and / or the compressor drive unit 60 for operation of said compressor 40.
    The electronic control unit 90 is arranged so that said hydraulic motor drive data falls below a predetermined threshold value sent via the link signals to the compressor drive device 60 representing activation data for activating the compressor drive device 60 for operating the compressor 40.
    The electronic control unit 90 is arranged that when said hydraulic motor operating data exceeds a predetermined threshold value, signals sent via the link to the coupling means 70 representing coupling data for coupling the hydraulic motor device 30 for operating the compressor 40.
    The electronic control unit 90 is arranged that when said hydraulic motor operating data falls below a predetermined threshold value signals sent via the link to the coupling means 70 representing connection data for switching on the compressor drive device 60 for operating the compressor 40. 60 only to the extent required to supply sufficient air to the vehicle. 50 in order for it to be filled with compressed air, whereby the compressor drive device is thereby used, the less energy is required to drive the compressor drive device 60.
    Fig. 5 schematically illustrates a system 110 for recovering energy from a hydrodynamic auxiliary brake according to an embodiment of the present invention.
    The system includes an auxiliary brake in the form of a hydrodynamic retarder 120. The retarder 120 includes a retarder gear 122 with a retarder shaft 124.
    The retarder 120 comprises a stator 126 and a rotor 128, the rotor 128 being arranged to be rotated by said retarder shaft 124. An oil medium 0 is arranged between the stator 126 and the rotor 128 of the retarder 120. The space 129 between the stator 126 and the rotor 128 forms a torus shape and the output braking torque depends on the degree of filling of oil medium 0 in this space.
    The retarder 120 comprises a vane device including vanes, which are arranged at the rotor 126 and the stator 128. The vanes are arranged so that, when the retarder 120 is activated, it is rotated in the oil medium 0 so that a braking moment occurs. According to this variant, the retarder gear 122 comprises a retarder shaft gear 122a and a second gear 122b arranged on the output shaft X of a gearbox (not shown) of a motor vehicle, the retarder shaft gear 122a being arranged to be driven by the second gear shaft 122b for rotation of the retarder shaft 122b. 124, whereby the desired gear ratio is obtained. 130 connected to the retarder shaft 124, the retarder shaft 124 being arranged to drive the oil pump 130. The retarder 120 comprises a retarder housing 140. The retarder housing 140 comprises an oil sump 142 arranged to accommodate an oil medium O. The oil pump The retarder 120 further comprises an oil pump 130 is arranged to portion 131a of a conduit 131 pumps said oil medium 0 from the oil sump 142.
    The oil pump 130 is arranged to in said line 131 forming a circuit pump the oil medium 0 via a second portion 131b of the line 131 to a valve means 132 which is arranged to open at a predetermined pressure of the oil medium O. When the valve means 132 is open the oil medium 0 is arranged to from the valve means in a third portion 131c of the conduit 131 is pumped into a first inlet 129a of the toroidal space 129.
    The toroidal space 129 between stator 126 and rotor 128 has an outlet 129b, wherein in the space heated and pressurized oil medium 0 is arranged to flow out of the space 129 through said outlet 129b in a first portion 150a of a conduit 150 to a valve member 152 which is arranged to open at a certain pressure and which valve means 152 is closed when the retarder 120 is inactive. The retarder 120 further comprises a cooling device 160 arranged to cool the heated oil medium 0 flowing via the valve means in a second portion 150b of the line 150. The oil medium 0 is arranged to flow in said line 150 forming a circuit via said valve means 152 and cooled by the cooling device 160 and then is conducted in a third portion 150c of the conduit 150 via a check valve means 154 and through a fourth portion 150d of the conduit and back in through a second inlet 129c to the toroidal space 129. The conduit 150 forms a circuit extending from the outlet 129b to the inlet 1290. 170.
    The hydraulic motor device 170 is arranged to be driven by means of the oil medium 0 flowing in the oil line 150.
    The system 110 further comprises a hydraulic motor device. The system further comprises a compressor 180 for supplying pressurized air to the vehicle's compressed air system 190. The hydraulic motor device is connected to the compressor 180, the compressor 180 being arranged to be driven by energy generated by said hydraulic motor device 170.
    According to this embodiment, the hydraulic motor device 170 is arranged upstream of the cooling device 160, said hydraulic motor device 170 being intended to be operated by means of the oil medium 0 before it is cooled by means of said cooling device 160.
    The hydraulic motor device 170, the compressor 180 and the cooling device 160 form a subsystem B of the system 110.
    Fig. 6 schematically illustrates a subsystem B1 for recovering energy from a hydrodynamic retarder according to an embodiment of the present invention.
    The subsystem B1 according to this embodiment differs from the subsystem B according to Fig. 5 by the position of the hydraulic motor device 170 relative to the cooling device 160.
    According to this embodiment, the hydraulic motor device 170 is arranged downstream of the cooling device 160, said hydraulic motor device 170 being intended to be driven by an oil medium 0 after it has been cooled by said cooling device 160. The hydraulic motor device 170 is connected to the compressor 180, the compressor 180 being arranged to be driven by energy generated by said hydraulic motor device 170. The compressor 180 is arranged to supply pressurized air to the vehicle's compressed air system 190. Fig. 7 schematically illustrates a method for recovering energy from a hydrodynamic attachment brake according to an embodiment of the present invention.
    According to one embodiment, the method for recovering energy from an attachment brake in the form of a hydrodynamic retarder comprises a first step S1. In this step, a hydraulic motor device is driven by means of a hydraulic fluid flow from said attachment brake.
    According to one embodiment, the method for recovering energy from an attachment brake in the form of a hydrodynamic retarder comprises a second step S1. In this step, a compressor is driven by energy generated by said hydraulic motor device.
    The above description of the preferred embodiments of the present invention has been provided for illustrative and descriptive purposes. It is not intended to be exhaustive or to limit the invention to the variations described. Obviously, many modifications and variations will occur to those skilled in the art. The embodiments have been selected and described to best explain the principles of the invention and its practical applications, thereby enabling one skilled in the art to understand the invention for various embodiments and with the various modifications appropriate to the intended use.
    权利要求:
    Claims (9)
    [1]
    Method for recovering energy from an auxiliary brake (20; 120) in the form of a so-called hydrodynamic retarder, characterized by the step of: - driving (S1) a hydraulic motor device (30; 170) by means of a hydraulic medium de (O) from said auxiliary brake (20; 120); and - driving (S2) a compressor (40; 180) by energy generated by said hydraulic motor device (30; 170).
    [2]
    The method of claim 1, comprising the step of cooling said hydraulic fluid flow (0) prior to driving said hydraulic motor device (170).
    [3]
    The method of claim 1, comprising the step of driving said hydraulic motor device (170) prior to cooling said hydraulic fluid flow (0).
    [4]
    A method according to any one of claims 1-3, comprising the step of driving said hydraulic motor device (170) by means of both cooled and uncooled hydraulic medium (0).
    [5]
    A system for recovering energy from an auxiliary brake (20; 120) in the form of a hydrodynamic hydraulic motor device (30; 170) arranged to be driven by means of a hydraulic fluid flow (0) from said auxiliary brake (20; 120), together with means for driving a compressor (40; 180) by energy generated by said hydraulic motor device (30; 170). such a retarder, characterized by a
    [6]
    The system of claim 5, further comprising a cooling device (160) for said hydraulic medium (0), said hydraulic motor device (30; 170) being adapted to be operated by hydraulic medium (0) before being cooled by said cooling device (160). 15
    [7]
    A system according to claim 5, wherein said hydraulic motor device (30; 170) is intended to be operated by means of hydraulic medium (0) after it has been cooled by means of said cooling device (160).
    [8]
    A system according to any one of claims 5-7, wherein said hydraulic motor device (170) is intended to be operated by means of hydraulic medium (0) cooled by means of said cooling device (160) as well as by means of hydraulic medium (0) not cooled by means of said cooling device (160) .
    [9]
    Motor vehicle (1) comprising a system (10; 110) according to any one of claims 5-8.
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    同族专利:
    公开号 | 公开日
    SE535505C2|2012-09-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    SE536700C2|2012-10-17|2014-06-03|Scania Cv Ab|Retarders for braking a drive source, vehicles comprising such retarders, and method for switching on and off a retarder|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1150021A|SE535505C2|2011-01-14|2011-01-14|Process and system for the recovery of energy from an auxiliary brake|SE1150021A| SE535505C2|2011-01-14|2011-01-14|Process and system for the recovery of energy from an auxiliary brake|
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