SE539982C2 - A directional valve - Google Patents

A directional valve Download PDF

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Publication number
SE539982C2
SE539982C2 SE1650894A SE1650894A SE539982C2 SE 539982 C2 SE539982 C2 SE 539982C2 SE 1650894 A SE1650894 A SE 1650894A SE 1650894 A SE1650894 A SE 1650894A SE 539982 C2 SE539982 C2 SE 539982C2
Authority
SE
Sweden
Prior art keywords
fluid
channel
valve body
valve
circuit
Prior art date
Application number
SE1650894A
Other languages
Swedish (sv)
Other versions
SE1650894A1 (en
Inventor
Rybaeck Petter
Original Assignee
Scania Cv Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE1650894A priority Critical patent/SE539982C2/en
Priority to DE112017002609.1T priority patent/DE112017002609B4/en
Priority to PCT/SE2017/050634 priority patent/WO2017222447A1/en
Publication of SE1650894A1 publication Critical patent/SE1650894A1/en
Publication of SE539982C2 publication Critical patent/SE539982C2/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1223—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/08—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels using fluid or powdered medium
    • B60T1/087—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels using fluid or powdered medium in hydrodynamic, i.e. non-positive displacement, retarders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T10/00—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope
    • B60T10/02—Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope with hydrodynamic brake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/06—Retarder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
    • F16D57/04—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders with blades causing a directed flow, e.g. Föttinger type

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)

Abstract

A directional valve (12) is arranged in a fluid channel (3) at a site of connection of a branch channel (11) thereto. A valve body (14) is movable between a first position allowing fluid to pass the valve body without entering the branch channel (11) and a second position diverting fluid in the fluid channel to the branch channel (11). A piston (18) is connected to the valve body (14) through a piston rod (19) and displaceable in a housing (20) while sealingly dividing the housing into two chambers (21, 22) on opposite sides of the piston. A pressurized medium may be fed into a first chamber (21) for moving the piston (18) and by that the valve body (14). The piston rod (19) is provided with an internal channel (24) connecting a second chamber (22) of the housing (20) to the branch channel (11).

Description

The present invention relates to a directional valve configured tobe arranged in a fluid channel at a site of connection of a branchchannel thereto, the valve comprising: a valve body configured tobe movable when the valve is arranged in a said fluid channel andconfigured to in a first position close the connection of the fluidchannel to the branch channel and connect an upstream part ofthe fluid channel with a downstream part thereof so as to allowfluid to pass from the upstream part to the downstream part andconfigured to in an second position open a connection of saidupstream part of the fluid channel to the branch channel and closethe connection of the upstream part of the fluid channel to thedownstream part thereof to prevent fluid to reach the downstreampart of the fluid channel, a member configured to urge the valvebody towards said first position, and an arrangement configured tocontrol the movement of the valve body between the first andsecond position by applying power to the valve body counteracting power applied thereto by said member.
Such a directional valve may be arranged anywhere in a fluidchannel, such as being a part of a fluid circuit, where it is desiredto be able to shift between two states, to either divert fluid flowingin the fluid channel to flow into said branch channel or let the fluidflowing in the fluid channel bypassing the connection of the branchchannel thereto without flowing into the branch channel. However,the invention is particularly directed to a fluid channel being a part of a circuit for circulation of fluid in a motor vehicle and especially to a directional valve arranged to divert fluid from such a fluidcircuit to a retarder unit when braking a heavy motor vehicle, suchas a truck or a bus, which is the reason for hereinafter mainlydisclosing that application of the invention without in any way restrict the invention thereto.
When the valve body is in said first position and the branchchannel is sealed with respect to the fluid channel the pressureprevailing in the branch channel and that in the fluid channel maydiffer a lot, which is often especially the case when the fluidchannel is a part of a vehicle cooling circuit and the branchchannel is connected to the working space of a retarder unit. Suchpressure differences may result in irregularities and bumps orpunches of components when regulating the directional valve to achange from said first to said second position. This does then alsoresult in an inexact determination of the position of the valve bodyand by that the state of the directional valve. The same problemmay occur when changing from said second to the first position ofthe valve body due to the pressure difference then built upbetween said upstream part and downstream part of the fluid channeL BACKGROUND OF THE INVENTION DE 102007055604 and EP O 972 916 disclose directional valvesof the type defined in the introduction arranged to divert coolingliquid from a cooling circuit in a motor vehicle to a retarder unitand facing the problem of regulating such a directional valve discussed above.
SUMMARY OF THE INVENTION The object of the present invention is to provide a directional valveof the type defined in the introduction being improved in at leastsome aspect with respect to such directional valves already known.
This object is according to the invention obtained by providing such a directional valve with the features listed in the characterizing part of appended patent claim 1.
Thus, the invention is based on connecting a piston to the valvebody through a piston rod and designing the piston displaceablein a housing while sealingly dividing the housing into two chamberson opposite sides of the piston and providing means controllableto apply a pressurized medium into a first of the chambers of thehousing for applying power to the piston exceeding the urgingpower of said member for moving the piston inside the housingand by that the valve body from the first to the second position. Bythen providing the piston rod with an internal channel connectingthe second chamber of the housing to the branch channel the samepressure will prevail in said second chamber as in the branchchannel irrespectively of the position of the piston, so that thepower of the pressurized medium, such as compressed air, appliedto the first chamber for moving the piston has only to exceed thepower of said member urging the valve body towards the firstposition for moving it to the second position. Thus, the valve willbe “self-regulating” and the regulation thereof will be independentof any difference of the pressures in the fluid channel and the branch channel. A more exact determination of the position of the directional valve in each situation by using a lower pressure of saidcontrolling pressurized medium will by that be obtained. lt ispointed out that these advantages are also achieved whencontrolling the valve body to return to the first position from thesecond position while letting said pressurized medium out of the first chamber of the housing.
According to an embodiment of the invention said member is acompression spring, which will then reliably define a certain powerby which the valve body is urged towards the first position andwhich is to be overcome for moving the valve body from thatposition.
According to another embodiment of the invention saidarrangement is configured to control the movement of the valvebody by supplying compressed air to said first chamber of thehousing. Such a control by supplying compressed air is simple and easy to accomplish.
The invention also relates to a circuit for circulation of a fluidchannel and having a branch channel connected to the fluidchannel for diverting fluid flowing in said circuit being providedwith a directional valve according to the invention at the site ofThe advantages of such a circuit provided with a directional valve connection of the branch channel to the fluid channel. according to the invention appear from the above discussion of the valve according to the invention.
The invention also relates to a circuit for circulation of fluid in a fluid channel in a motor vehicle having a branch channel connected to the fluid channel for diverting fluid from the circuit,which circuit is provided with a directional valve according to theinvention arranged at the site of connection of the branch channelto the fluid channel, and the branch channel is configured toconduct fluid diverted from the circuit to a retarder unit used tobrake the vehicle. Such a circuit will benefit from the well-definedand smooth regulation of the directional valve in that circuit, andwhen the branch channel according to another embodiment of theinvention is integrated with a working space of the retarder unitsubstantial pressure variations may occur but thanks to the designof the directional valve not influence the regulation of the valvebody for changing the direction of the flow of fluid at the site of the directional valve.
According to another embodiment of the invention the fluid circuitis a vehicle cooling circuit and the retarder unit is a hydrodynamicretarder.
The invention also relates to a motor vehicle, especially a heavymotor vehicle, such as a truck or a bus, provided with a circuit for circulation of fluid according to the invention.
Other advantageous features as well as advantages of the present invention appear from the description following below.
BRIEF DESCRIPTION OF THE DRAWINGS With reference to the appended drawings, below follows a specific description of an embodiment of the invention cited as an example. ln the drawings: Fig. 1 is a schematic view illustrating how a directional valveaccording to the present invention may be a part of a fluid circuitincluding a vehicle cooling circuit and a retarder unit of a heavy motor vehicle, and Figs. 2 and 3 are cross-section views illustrating a directionalvalve according to an embodiment of the present inventionarranged in a fluid channel at a site of connection of a branchchannel thereto with a valve body in said first position and said second position, respectively.
DETAILED DESCRIPTION OF AN EMBODIMENT OF THEINVENTION Fig. 1 illustrates very schematically a possible application of adirectional valve according to the present invention in a coolingcircuit in a heavy motor vehicle 1, such as a truck or a bus. lt ispointed out that a number of components of said cooling circuithave been omitted, since they have nothing to do with the presentinvention directed to the directional valve and the way it influencesthe behavior of the circuit. lt is shown how the vehicle has acooling circuit 2 conducting a cooling fluid fed through a fluidchannel 3 of the circuit by a cooling liquid pump 4 driven by aninternal combustion engine 5 of the vehicle which said coolingliquid passes for cooling thereof. The cooling circuit also includes a cooler 6.
The vehicle has a retarder unit 7 with a rotor vane wheel and astator vane wheel not shown used to assist the ordinary brakes ofthe vehicle to brake the vehicle, possibly also together with anexhaust gas brake not shown. lt is indicated how the retarder unitfor this sake may be connected to and disconnected from a gearbox 8 of the vehicle by means of a coupling member 9. The re-tarder unit 7 is connected to the fluid channel 3 of the cooling cir-cuit 2 at a site 10 through a branch channel 11, and a directionalvalve 12 according to the present invention is arranged at saidsite. When cooling liquid is diverted to the retarder unit it will leavethe retarder unit and return to the cooling liquid pump 4 eitherwithout passing the cooler 6 by being diverted through a thermo-stat 30 or by passing through the cooler 6. Thus, the directionalvalve 12 may be controlled to let the cooling liquid pass the branchchannel 11 without being diverted to the retarder unit and thenpass the cooler 6 or when braking flowing through the retarder unit 7 without passing the cooler 6.
The construction and operation of a directional valve 12 accordingto an embodiment of the invention will now be described whilemaking reference to Figs. 2 and 3 showing this valve in cross-section arranged at said site 10 in the fluid channel 3 of theconnection of a branch channel 11 opening directly into a working space 13 of a retarder unit 7.
The valve has a valve body 14 configured to be movable when thevalve is secured to the fluid channel 3. The valve body has means,O-ring 15, circumferentially around an opening 16 in the fluid channel 3 to such as an configured to sealingly bear the branch channel 11 in a first position of the valve body shown in Fig. 2. A member 17 in the form of a compression spring isconfigured to urge the valve body 14 towards this first position topress said O-ring 15 to bear tightly upon the internal wall of the fluid channel 3.
The valve further comprises an arrangement configured to controlthe movement of the valve body 14 between the first positionshown in Fig. 2 and a second position shown in Fig. 3 by applyingpower to the valve body counteracting the power applied throughthe compression spring 17. This arrangement comprises a piston18 connected to the valve body 14 through a piston rod 19 anddisplaceable in a housing 20, through which the valve is securedto the fluid channel 3, while sealingly dividing the housing into twochambers 21, 22 on opposite sides of the piston 18. The valvefurther comprises means 23 in the form of a source of compressedapply apressurized medium, here compressed air, to a first 21 of the medium schematically indicated controllable tochambers of the housing for applying a power to the piston 18exceeding the power of the compression spring 17 acting upon thevalve body, for lifting the valve body 14 from the position shown inFig. 2.
The piston rod 19 is provided with an internal channel 24connecting the second chamber 22 of the housing 20 to the branchchannel 11. This means that the same pressure always will prevailin the second chamber 22 of the housing as in the branch channel11 and by that in the working space 13 of the retarder unit 7. Thepressure may for instance be 1-2 bars in the fluid channel 3 andat the same time 8 bars in the working space 13 of the retarder unit, but thanks to the connection of said working space 13 with the second chamber 22 of the housing 20 through the piston rodchannel 24 the same power will be needed to compress the spring17 and move the valve body 14 irrespectively of the pressure inside said working space.
The valve body is movable to a second position shown in Fig. 3 byapplying compressed air into the first chamber 21 and valve bodyparts 25 will in this position connect to fluid channel parts 26 andparts 27 of the housing 20 to close the connection of an upstreampart 28 of the fluid channel 3 to a downstream part 29 thereof withrespect to the directional valve 12. lt is shown in Fig. 3 how fluidarriving to the directional valve with the valve body in the firstposition of Fig. 2 will pass the directional valve from the upstreampart 28 to said downstream part 29 and how it will with the valvebody 14 in the second position of Fig. 3 be diverted into the branchchannel 11 and by that the working space 13 of the retarder unit7.
The invention is of course in no way restricted to the embodimentdescribed above, since many possibilities for modifications thereofare likely to be obvious to one skilled in the art without having todeviate from the scope of invention defined in the appended claims.
The directional valve may just as well be arranged at a site fordiverting a fluid in the form of oil to an oil retarder instead of to a water retarder as described above.

Claims (2)

5 Claims
1. A directional valve configured to be arranged in a fluid channel (3) at a site (10) of connection of a branch channel (11) thereto, the valve (12) comprising: a valve body (14) configured to be movable when thevalve is arranged in a said fluid channel and configuredto in a first position close the connection of the fluidchannel (3) to the branch channel (11) and connect anupstream part (28) of the fluid channel with a downstreampart (29) thereof so as to allow fluid to pass from theupstream part to the downstream part and configured toin an second position open a connection of said upstreampart (28) of the fluid channel (3) to the branch channel(11) and close the connection of the upstream part of thefluid channel to the downstream part thereof to preventfluid to reach the downstream part (29) of the fluidchanneL a member (17) configured to urge the valve body (14)towards said first position, and an arrangement configured to control the movement ofthe valve body between the first and second position byapplying power to the valve body (14) counteracting power applied thereto by said member (17), characterized in that said arrangement comprises a piston (18) connected to the valve body (14) through apiston rod (19) and displaceable in a housing (20) whilesealingly dividing the housing (20) in two chambers on opposite sides of the piston, and
2. 11 o means (23) controllable to apply a pressurized mediuminto a first (21) of said chambers of the housing (20) forapplying a power to the piston (18) exceeding the urgingpower of said member (17) for moving the piston (18)inside the housing (20) and by that the valve body (14)from the first to the second position,and that the piston rod (19) is provided with an internalchannel (24) connecting the second chamber (22) of said housing (20) to said branch channel (11). A valve according to claim 1, characterized in that said member is a compression spring (17). A valve according to claim 1 or 2, characterized in that saidarrangement is configured to control the movement of thevalve body (14) by supplying compressed air to said firstchamber (21) of the housing (20). A circuit (2) for circulation of a fluid in a fluid channel (3) andhaving a branch channel (11) connected to the fluid channelfor diverting fluid flowing in said circuit, characterized in thatit comprises a directional valve (12) according to any of thepreceding claims arranged at the site (10) of connection of thebranch channel (11) to the fluid channel (3). A circuit for circulation of fluid in a fluid channel (3) in a motorvehicle having a branch channel (11) connected to the fluidchannel for diverting fluid from the circuit, characterized inthat it comprises a directional valve (12) according to any of claims 1-3 arranged at the site (10) of connection of the 12 branch channel (11) to the fluid channel (3), and that thebranch channel is configured to conduct fluid diverted from said circuit to a retarder unit (7) used to brake the vehicle. A fluid circuit according to claim 5, characterized in that thebranch channel (11) is integrated with the working space (13) of the retarder unit (7). A fluid circuit according to claim 5 or 6, characterized in thatit is a vehicle cooling circuit (2) and the retarder unit (7) is a hydrodynamic retarder. A motor vehicle (11), especially a heavy motor vehicle, suchas a truck or a bus, characterized in that it is provided with acircuit (2) for circulation of fluid according to any of claims 5-7.
SE1650894A 2016-06-22 2016-06-22 A directional valve SE539982C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE1650894A SE539982C2 (en) 2016-06-22 2016-06-22 A directional valve
DE112017002609.1T DE112017002609B4 (en) 2016-06-22 2017-06-14 Directional valve
PCT/SE2017/050634 WO2017222447A1 (en) 2016-06-22 2017-06-14 A directional valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1650894A SE539982C2 (en) 2016-06-22 2016-06-22 A directional valve

Publications (2)

Publication Number Publication Date
SE1650894A1 SE1650894A1 (en) 2017-12-23
SE539982C2 true SE539982C2 (en) 2018-02-20

Family

ID=60783482

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1650894A SE539982C2 (en) 2016-06-22 2016-06-22 A directional valve

Country Status (3)

Country Link
DE (1) DE112017002609B4 (en)
SE (1) SE539982C2 (en)
WO (1) WO2017222447A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019127128B4 (en) * 2019-10-09 2023-03-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Adapter component for a fluid-communicating connection of a main cooling circuit in a main housing and a sub-cooling circuit in a sub-housing in a vehicle

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659687A (en) * 1970-09-21 1972-05-02 Gen Motors Corp Fluid drive transmission with retarder and controls
US3865140A (en) * 1973-08-22 1975-02-11 Itt Solenoid-operated, three-way fuel valve with pressure balancing
US5771931A (en) * 1996-10-31 1998-06-30 Gilmore Valve Company High pressure wear resistant pilot valve
DE19831922A1 (en) 1998-07-16 2000-01-20 Man Nutzfahrzeuge Ag Drive device in a motor vehicle
US7832426B2 (en) * 2006-09-05 2010-11-16 Fisher Controls International Llc Parabolic bonnet for three-way valve
DE102007055604B3 (en) * 2007-11-20 2009-05-07 Voith Patent Gmbh Vehicle cooling circuit, has control valve that is integrated in circuit, so that switching position of valve is adjusted based on working medium pressure in retarder, working medium feed line or working medium discharge line of retarder
DE102010049370A1 (en) 2010-10-26 2012-04-26 Grohe Ag way valve
JP6218024B2 (en) 2013-09-25 2017-10-25 株式会社テージーケー solenoid valve

Also Published As

Publication number Publication date
DE112017002609B4 (en) 2024-06-13
SE1650894A1 (en) 2017-12-23
DE112017002609T5 (en) 2019-03-14
WO2017222447A1 (en) 2017-12-28

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