• 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: A hydrodynamic retarder device (4) for insertion into a driveline (3) of a vehicle (1), the retarder device comprising: a paddled stator (7) together with a paddled rotor (8) forming a paddle system with a working space ( 6) may receive a water-containing working medium, and a retarder circuit (14) connected to the working space (6) may regulate the supply of working medium to the working space (6), the retarder circuit (14) being arranged to be connected to the vehicle's ordinary cooling water circuit (9). The retarder circuit (14) comprises valve means for shutting off the supply of working medium to the working space (6), and in the retarding circuit (14) a negative pressure generator (19) is connected, which is arranged to lower the pressure in the working space (6) to or below the aggregation pressure of the working medium sA. that thereby the work space is evacuated from liquid-shaped working medium. The invention also relates to a method and a vehicle. Fig. 2
    公开号:SE1351050A1
    申请号:SE1351050
    申请日:2013-09-12
    公开日:2015-03-13
    发明作者:Mikael Sannelius；Johnny Färm；Petter Rybäck；Elias Bartos
    申请人:Scania Cv Ab；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION The present invention relates to a hydrodynamic retarder device for a vehicle comprising at least one paddle-mounted stator for forming, together with at least one paddle-provided rotor, a working space with a working space rotor. the working space connected retarder circuit fer to regulate the supply of working medium to the work space. The invention also relates to a method for operating a hydrodynamic retarder device and a vehicle equipped with a hydrodynamic retarder device.
    BACKGROUND OF THE INVENTION It is to increase driving efficiency and safety and to reduce wear on the wheel brakes. It is possible to equip heavier vehicles with retarder devices. A retarder device Or a hydrodynamic auxiliary brake, which brakes the car's driveline with the help of resistance exited by a paddle system, which drives a water shortage in a work space. The braking energy absorbed by the retarder device transitions into operation in heat energy in the liquid, which in turn is cooled by a cooling system in the vehicle.
    The braking torque is controlled by controlling a pressure such as rows in the working space between the vane blades belonging to both the stator of the retarder device and its rotor. When the retarder device is not used Or the work space In principle depressurised. However, a certain slack loss is created in the retarder device because it still rotates with the driveline. From an industry savings point of view, is it important to keep this loss of slap as small as possible One method of avoiding the loss of slip is to mechanically disconnect the retarder device from the driveline when not in use. This liter sip gora with the aid of a coupling, for example a synchronizing coupling or a lamella coupling.
    When the retarder device is then to be switched on to be used for braking, it is required that the rotor of the retarder device is rapidly accelerated and synchronized with the driveline speed. This must take place in the course of parts of a second and the resulting acceleration moment must be minimized so that uncomfortable jerks in the vehicle are not generated.
    In a retarder device which uses oil as the working medium, this is entirely possible thanks to an added acceleration resistance, which is achieved by filling the vane system with air instead of oil during this acceleration phase.
    In order to minimize the number of components and systems in the vehicle, it is advantageous that the car's ordinary coolant, which typically contains a mixture of water and glycol, can be used as a working medium. A retarder device applying this principle bends water retarders.
    In the case of a water retarder, however, it is problematic to airtight the paddle system during acceleration due to the fact that air which comes into contact with the cooling fluid can partly accompany it and have a detrimental effect on other components in the vehicle with which the cooling fluid comes into contact. For this reason, the partially water-filled veins of water retarders are driven when they are disconnected, which results in relatively high acceleration moments.
    For this reason, more complicated coupling components are required, and despite this, uncomfortable jerks can to some extent occur in the vehicle during coupling. Examples of prior art include US2287130, US20060909971, WO2010034493, US2007102251 and DE10054078.
    BACKGROUND OF THE INVENTION AND MOST IMPORTANT CHARACTERISTICS It is an object of the present invention to provide a hydrodynamic retarder device according to the above in addition to a method in which the problems of the background technique are addressed and at least alleviated. This is achieved in a device according to the invention in that the retarder circuit comprises valve means for shutting off the supply of working medium to the working space, that the retarder circuit, a negative pressure generator, is connected, which is arranged to lower the pressure in the working space to or below working medium. By essentially momentarily lowering the pressure in the retarder device prior to the connection to the driveline and the associated acceleration phase, the existing water in the retarder device will be quickly converted to dung form and evacuated. As a result, it is desired that the acceleration moment of the retarder device, when switched on, is lowered very quickly in order to be level with the corresponding acceleration moment for an oil retarder device. This means that the time for carrying out the pressure thinking for evacuation of the retarder device should be shorter than 0.5 sec for the retarder device to be able to be used without significant time delay. Here the lecture is less than 0.3 sec for the time of pressure pressure for evacuation and most of the lecture is less than 0.2 sec for the time for pressure pressure for evacuation.
    Vapor formation is achieved by in the closed working space, defined by the stator and rotor, the pressure is momentarily lowered to the vapor formation pressure or 4 to a pressure below the vapor formation pressure. This evacuates quickly, almost momentarily, and efficiently the vane space on liquid water or coolant and enables mechanical connection / disconnection of the retarder device while maintaining comfort and using a coupling unit comprising uncomplicated coupling components. This is a rigid advantage because the retarder device can be switched on and off without the risk of air coming into contact with the coolant and giving a harmful effect on other components in the vehicle with which the coolant comes into contact.
    The negative pressure generator can be connected to the retarder circuit sAvd1 downstream which is upstream of the work space and dven directly towards the work space.
    It is preferred that a control valve is arranged in the control circuit downstream of the working space to provide the possibility of controlling the braking torque applied by the retarder device. The lecture here is a one-way valve arranged in the retarder circuit in connection with the control valve to ensure safety against backflow. This one-way valve can be separate from or be integrated in the control valve.
    In some embodiments, the negative pressure generator is connected to the retarder circuit via an inlet line and to the said cooling water circuit via an outlet line. Either or each of the inlet line and the outlet line may then need to be equipped with a one-way valve.
    It is preferred that the negative pressure generator be from a group including: a piston-cylinder pump, a negative pressure rechargeable negative pressure vessel, a rotary pump. These units can be arranged to operate at the desired speed, with special insertion of a rechargeable negative pressure vessel, which is constantly on standby and directly switchable through a valve, resulting in a high degree of speed in an uncomplicated manner. When using a hazardous negative pressure vessel as a negative pressure generator, the inlet line does not need to be equipped with a one-way valve. No outlet line needs to be fitted either.
    A method according to the invention for operating a hydrodynamic retarder device as described above is characterized in that the supply of working medium to the working space is shut off, and that the pressure in the working space decreases to or below the working pressure for the working medium and thereby evacuates Iran liquid liquid working medium. In other words, the working space is thus isolated and subjected to the said negative pressure, which in a surprisingly rapid manner, almost instantaneously, can result in the desired evacuation of the working space from water.
    In this case, a flow of working medium to the working space is preferably regulated by means of a control valve arranged in the control circuit, the preferred flow of working medium from the control valve to the working space being prevented by a single-way valve arranged in the control circuit in connection with the control valve.
    According to the invention, this also means a vehicle, which comprises a retarder device as above.
    Description of drawings The invention will now be described in more detail with reference to exemplary embodiments and with reference to the accompanying drawings, in which: Fig. 1 schematically shows a commercial vehicle equipped with a retarder device according to the invention, Fig. 2 shows a principle sketch of a retarder device according to the invention, Figs. 3 and 4 shows in simplified form two operating conditions for a retarder device according to the invention, and Fig. 5 schematically shows a sequence of a method according to the invention in the form of a simple block diagram.
    Description of exemplary embodiments The commercial vehicle 1 shown in Fig. 1 is of the type which comprises a motor 2, a driveline 3 and a retardable and disconnectable retarder device 4.
    The basic construction of a retarder device 4 is shown in Fig. 2, wherein a coupling unit 5 is arranged for connecting and disconnecting the retarder device 4 to the vehicle driveline 3. The retarder device 4 has a stator 7 and a rotor 8, which is rotatable about an axis R.
    Together, the stator 7 and the rotor 8 form a vane system with a working space 6, in which more or less amount of liquid is intended to be thrown around to function as a working medium in the operation of the retarder device, whereby energy absorbed by the retarder device is transferred to heat. This heat is cooled by the vehicle's regular cooling system, which includes a cooling water circuit 9, a water pump 10, a front cooler 11, an expansion boiler 21 and a thermostat 12.
    A directional valve 13 inserted in the cooling water circuit 9 is arranged to lead the cooling fluid as a working medium to the working space 6 of the paddle system and to shut off the supply to the working space 6. From the directional valve 13 a retarder circuit 14 leads to a ride in the working space. Or reliable as a working medium. The retarder circuit 14 Or further, for outlet of working medium from the working space, connected to a peripheral area of the working space 6, in which a 7 hg pressure can be expected during operation, and where outflow of the working medium can take place.
    Downstream of the working space 6, the retarder circuit passes a control valve 15, by means of which the pressure in the working space and as a result the amount of working medium in the working space is adjustable.
    Furthermore, the downstream control valve 15 is provided with a one-way valve 16, which allows a flow of working medium from the working space 6 but prevents flow in the opposite direction.
    Downstream of the working space in the retarder circuit 14 and upstream of the control valve 15 is connected a negative pressure circuit, which includes a negative pressure generator 19, hdr shown in the form of a piston-cylinder unit 19.
    In that the negative pressure generator 19 is of a type which operates with several kinds, a one-way valve can, if necessary, be arranged in its inlet line and in its outlet line, respectively (not shown in the figure).
    Fig. 3 illustrates an operating case, which is characterized as normal braking, and whereby all available cooling water / coolant is allowed to enter as working medium through the directional valve 13 into the working space 6 of the retarder device. SA as indicated in Fig. 3 is in this operating case , and this amount of water damage will be imparted during operation to a rotating motion according to the arrows inside the work space 6.
    In this operation, it is possible to control the braking torque by changing the pressure in the working space and thereby the water damage rate by adjusting the control valve 15.
    As a result, the amount of liquid affected by the paddle system will change, causing an internal space 30 to become larger or smaller. 8 In total, it can be said that in this operating case the maximum braking effect of the retarder device can be obtained. Fig. 4 illustrates the operating case in which it is relevant to mechanically engage or disengage the retarder device from the vehicle's driveline. As described above, this requires a low relaxation moment for the retarder device in order to avoid uncomfortable jerks.
    According to the invention, such low relaxation moments are achieved in that the retarder circuit 14 is shut off from the cooling water circuit, and in that the working space 6 is substantially momentarily placed under such a negative pressure that water vapor is formed for rapid evacuation of water from the working space 6.
    Otherwise, the mode of operation of the operating case according to Fig. 4 is understood by the previous description in connection with Fig. 2.
    A sequence of a method according to the invention is schematically illustrated by the block diagram in Fig. 5.
    Position 24 refers to the start of the sequence.
    Position 25 refers to normal operation of a vehicle without the use of the retarder device, the working space of the retarder device being isolated from the cooling water circuit by the installation of the directional valve 13.
    Position 26 essentially refers to the momentary displacement of the working space under a negative pressure of such magnitude that angulation occurs and thus, also substantially momentarily, evacuation of liquid-shaped working medium.
    Position 27 refers to the connection of the retarder device to the driveline of the vehicle.
    Item 28 refers to the adjustment of the directional valve and the control valve for the desired braking effect. Position 29 refers to the end of the sequence. 9 The sequence steps can be partly in a different order than above.
    Significant advantages are achieved by the invention. An advantage is that through the invention only a single system of liquid to be cooled is operable for the vehicle. A vehicle equipped with a retarder device according to the invention becomes b1. a darfer easier and less expensive to manufacture and also meant an environmental improvement compared to the known technology. In addition, because the retarder device can be disconnected from the vehicle's driveline without any problems, the operating economy of the vehicle is improved.
    The slap losses from a co-rotating retarder would otherwise be significant.
    As an alternative to the negative pressure generator shown in the drawings, other types of "suction devices" can be used, such as a fast-acting pump device. A preferred alternative is to provide a man, which may be pre-charged with a negative pressure, which man is connected to the retarder circuit if necessary.
    It has been found that a desired negative pressure is in the range of 0.5 bar below atmospheric pressure because the vapor pressure at normal operating temperature amounts to approximately this value. However, application of higher negative pressure is not excluded as it may be necessary at lower temperatures due to the temperature dependence of the vapor pressure.
    A retarder device according to the invention may comprise a paddled stator for forming the paddle system with its working space together with a paddled rotor. According to the invention, the retarder device Oven may comprise more than one paddled stator cooperating with the corresponding more than one paddled rotor for forming the paddle system with its working space. 10
    权利要求:
    Claims (14)
    [1]
    At least one paddled stator (7) to form together with At least one padded rotor (8) a paddle system with a working space (6) for receiving a water-containing working medium, - a retarder circuit (14) connected to the working space (6) for regulating the supply of working medium to the working space (6), the retarder circuit (14) being arranged to be connected to the ordinary cooling water circuit (9) of the vehicle, and 2. a coupling unit for connecting and disconnecting said retarder device (4) to / from said driveline (3); ), characterized in that the retarder circuit (14) comprises valve means for shutting off the supply of working medium to the working space (6), and - that in the retarder circuit (14) a negative pressure generator (19) is connected, which is arranged to lower the pressure in the working space ( 6) to or below the angulation pressure of the working medium so that the working space is thereby evacuated from liquid-shaped working medium.
    [2]
    Retarder device according to claim 1, characterized in that a control valve (15) is arranged in the control circuit downstream of the working space.
    [3]
    Retarder device according to claim 2, characterized in that a one-way valve (16) is arranged in the control circuit in connection with the control valve (15). 11
    [4]
    Retarder device according to one of the preceding claims, characterized in that the negative pressure generator (19) is connected to the retarder circuit (14) downstream or upstream of the working space (6) or directly to the working space (6).
    [5]
    Retarder device according to claim 4, characterized in that the negative pressure generator (19) is connected to the retarder circuit (14) with an inlet line and to the cooling water circuit (9) with an outlet line.
    [6]
    Retarder device according to claim 5, characterized in that the inlet line and / or the outlet line from the negative pressure generator (19) is equipped (equipped) with a one-way valve.
    [7]
    Retarder device according to any one of the preceding claims, characterized in that the negative pressure generator (19) is one of a group including: a piston-cylinder pump, a negative pressure rechargeable negative pressure vessel, a rotary pump.
    [8]
    A method of operating a hydrodynamic retarder device (4) for coupling and uncoupling to a driveline (3) of a vehicle (1), the retarder device comprising: 1. a paddled stator (7) for coupling together with a paddle rotor ( 8) forming a paddle system with a working space (6) for receiving a water-containing working medium, 2. a retarder circuit (14) connected to the working space (6) for regulating the supply of working medium to the working space (6), the retarder circuit (14) being arranged to be connected to the ordinary cooling water circuit (9) of the vehicle, and 3. a coupling unit for connecting and disconnecting the said retarder device (4) to / from the said driveline (3), 10 12Characterized by 4. the inflow of working medium to the working space (6) shut off, and 5. that the pressure in the work space (6) is lowered to or below the Angbildning pressure for the work medium and that thereby the work space is evacuated to liquid liquid working medium.
    [9]
    Method according to claim 8, characterized in that a flow of working medium to the working space is regulated by a control valve (15) arranged in the control circuit downstream of the working space.
    [10]
    Method according to claim 9, characterized in that flow of working medium Iran control valve (15) to the working space is prevented by a one-way valve (16) arranged in the control circuit in connection with the control valve (15).
    [11]
    Method according to one of Claims 8 to 10, characterized in that the pressure in the working space (6) is reduced by connecting a negative pressure generator (19) to the retarder circuit (14).
    [12]
    Method according to claim 11, characterized in that the pressure in the working space (6) is lowered by a connection of someone from a group including: a piston-cylinder pump, a vacuum-reloadable pressure vessel, a rotary pump.
    [13]
    Method according to one of Claims 8 to 12, characterized in that when the pressure in the working space (6) is lowered to or below the Angling pressure for the working medium and the working space is evacuated from the liquid working medium, the retarder device is switched on and off to said driveline (3). 13
    [14]
    Vehicle comprising a retarder device according to any one of claims 1 - 7.
    类似技术:
    公开号 | 公开日 | 专利标题
    SE1351050A1|2015-03-13|Hydrodynamic retarder device, method for its use and vehicles
    SE538097C2|2016-03-01|Hydrodynamic retarder device, method for its use and vehicles
    JP6194274B2|2017-09-06|Waste heat recovery system and waste heat recovery method
    JP5821235B2|2015-11-24|Liquid cooling system
    CN201729056U|2011-02-02|Heat-radiating system for engineering machinery and engineering machinery
    SE1450190A1|2015-08-20|Hydrodynamic retarder device, method for its use and vehicles
    CN105756763A|2016-07-13|Vehicle cooling system and control method thereof as well as vehicle provided with system
    KR20150097749A|2015-08-26|Cooling system in a vehicle
    CN104088693A|2014-10-08|Engine assembly
    CN108973671A|2018-12-11|Vehicle and its auxiliary system
    JP2009126414A|2009-06-11|Driving device of vehicle
    EP3107776B1|2019-06-05|Control unit for retarder, vehicle including such a retarder and method for engaging a retarder
    SE1450441A1|2015-10-10|Arrangement in a vehicle
    CN109469693A|2019-03-15|A kind of waterpower retarder and its control method
    JP6653236B2|2020-02-26|Thermal energy recovery system
    KR101394044B1|2014-05-09|Water retarder for vehicle
    SE1450667A1|2015-12-04|Cooling system and a motor vehicle comprising such a cooling system
    SE1150021A1|2012-07-15|Process and system for the recovery of energy from an auxiliary brake
    CN105757214A|2016-07-13|Hydraulic retarder
    JP2009138884A|2009-06-25|Blowing apparatus for coolers
    SE538119C2|2016-03-08|Arrangement comprising a cooling system and a coolant pump a vehicle
    同族专利:
    公开号 | 公开日
    EP3044055A1|2016-07-20|
    EP3044055B1|2018-12-19|
    US20160200302A1|2016-07-14|
    CN105555625B|2017-12-22|
    WO2015038052A1|2015-03-19|
    KR101739082B1|2017-05-23|
    EP3044055A4|2017-07-19|
    BR112016002882A2|2017-08-01|
    SE538386C2|2016-06-07|
    KR20160052722A|2016-05-12|
    US10066685B2|2018-09-04|
    CN105555625A|2016-05-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CN104669998A|2015-03-16|2015-06-03|山东交通学院|Hybrid electric vehicle based on hydraulic retarder and control method thereof|ES339373A1|1966-09-24|1968-05-01|Teves Kg Alfred|Brake system|
    DE2710927A1|1977-03-12|1978-09-14|Daimler Benz Ag|HYDRODYNAMIC RETARDER FOR VEHICLES, IN PARTICULAR FOR MOTOR VEHICLES|
    DE3301560C1|1983-01-19|1984-04-05|Daimler-Benz Ag, 7000 Stuttgart|Control of the heating power of a hydrodynamic brake|
    EP0707140B1|1994-10-12|1999-06-02|Voith Turbo GmbH & Co. KG|Drive unit with an engine and a retarder|
    DE10118856A1|2001-04-18|2002-10-24|Zahnradfabrik Friedrichshafen|Brake system with a retarder|
    DE10242736A1|2002-09-13|2004-03-18|Voith Turbo Gmbh & Co. Kg|Hydrodynamic speed reduction system for motor vehicles, has a sliding rotator and variable gap to the stator and emptying of residual fluid|
    DE102009012495B3|2009-03-12|2010-07-08|Voith Patent Gmbh|Drive train with a arranged on the transmission output side hydrodynamic machine|
    DE102010010222A1|2010-03-03|2011-09-08|Voith Patent Gmbh|Hydrodynamic retarder and method of operating a hydrodynamic retarder|
    CN103101522B|2013-01-30|2015-03-04|厦门宇龙机械有限公司|Auxiliary brake device applied to non-drive axle|SE538094C2|2014-02-19|2016-03-01|Scania Cv Ab|Hydrodynamic retarder device, method for its use and vehicles|
    SE540577C2|2015-06-26|2018-10-02|Scania Cv Ab|Hydrodynamic retarder device|
    SE539583C2|2015-06-26|2017-10-17|Scania Cv Ab|Hydrodynamic retarder device and method for controlling it|
    CN105667481B|2016-03-14|2018-05-25|合肥三叶机械有限公司|Without friction anti-lock fluid brake|
    DE102020211041A1|2020-09-02|2022-03-03|Zf Friedrichshafen Ag|Braking device for a vehicle with a hydrodynamic retarder and with a separating clutch|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1351050A|SE538386C2|2013-09-12|2013-09-12|Hydrodynamic retarder device, method for its use and vehicles|SE1351050A| SE538386C2|2013-09-12|2013-09-12|Hydrodynamic retarder device, method for its use and vehicles|
    KR1020167009264A| KR101739082B1|2013-09-12|2014-09-10|Hydrodynamic retarder device, method for its use together with a vehicle|
    BR112016002882A| BR112016002882A2|2013-09-12|2014-09-10|“Hydrodynamic retarding device, method for use with a vehicle”|
    CN201480049821.2A| CN105555625B|2013-09-12|2014-09-10|Fluid power deceleration device and the method for being used together fluid power deceleration device with vehicle|
    PCT/SE2014/051038| WO2015038052A1|2013-09-12|2014-09-10|Hydrodynamic retarder device, method for its use together with a vehicle|
    EP14843968.0A| EP3044055B1|2013-09-12|2014-09-10|Hydrodynamic retarder device, method for its use together with a vehicle|
    US14/914,526| US10066685B2|2013-09-12|2014-09-10|Hydrodynamic retarder device, method for its use together with a vehicle|
    [返回顶部]