[go: up one dir, main page]

SE545818C2 - Coolant Circuit, Hydrodynamic Retarder Arrangement, and Vehicle - Google Patents

Coolant Circuit, Hydrodynamic Retarder Arrangement, and Vehicle

Info

Publication number
SE545818C2
SE545818C2 SE2051001A SE2051001A SE545818C2 SE 545818 C2 SE545818 C2 SE 545818C2 SE 2051001 A SE2051001 A SE 2051001A SE 2051001 A SE2051001 A SE 2051001A SE 545818 C2 SE545818 C2 SE 545818C2
Authority
SE
Sweden
Prior art keywords
coolant circuit
coolant
retarder
circuit
impeller pump
Prior art date
Application number
SE2051001A
Other languages
English (en)
Other versions
SE2051001A1 (en
Inventor
Ola Hall
Zoltan Kardos
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 SE2051001A priority Critical patent/SE545818C2/en
Priority to DE102021121407.6A priority patent/DE102021121407A1/de
Publication of SE2051001A1 publication Critical patent/SE2051001A1/en
Publication of SE545818C2 publication Critical patent/SE545818C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
    • 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
    • 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
    • B60T5/00—Vehicle modifications to facilitate cooling of brakes
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • 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
    • 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
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • F01P11/0238—Closure caps with overpressure valves or vent 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/028—Deaeration devices
    • 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0285—Venting devices
    • 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
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts
    • 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
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • 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
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D2065/782—Features relating to cooling the brake-actuating fluid being used as a coolant
    • 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
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D2065/783—Features relating to cooling cooling control or adjustment
    • 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
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D2065/787—Pumps

Landscapes

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

Claims (7)

  1. Kylkrets (20) för fordon utformad för att avlägsna värme som alstras av en fordonskomponent (1, 11), varvid kylkretsen (20) innefattar: - en värmeväxlare (3) utformad för att reglera temperaturen hos kylmedel i kylmedelskretsen (20), - en expansionstank (5), - en statisk ledning (7) som ansluter expansionstanken (5) till ett första parti (2') av kylkretsen (20), och - en pumphjulspump (9) anordnad i den statiska ledningen (7), kännetecknad av att kylkretsen (20) omfattar en avluftningsledning (17) som ansluter expansionstanken (5) till ett andra parti (23) av kylkretsen (20), varvid det andra partiet (23) är anordnat uppströms om det första partiet (2') i förhållande till en avsedd flödesriktning genom en kretssektion (20”) av kylkretsen (20), mellan det första och andra partiet (2', 23) av kylkretsen (20), och varvid kylkretsen (20) omfattar en envägsventil (28) anordnad i kretssektionen (20”). Kylkrets (20) enligt krav 1, varvid ett inlopp (9') hos pumphjulspumpen (9) är fluidmässigt anslutet till expansionstanken (5) och ett utlopp (9”) hos pumphjulspumpen (9) är fluidmässigt anslutet till kylkretsens (20) första parti (2'). Kylkrets (20) enligt krav 1 eller 2, varvid pumphjulspumpen (9) är en centrifugalpump. Kylkrets (20) enligt något av föregående krav, varvid kylkretsen (20) vidare omfattar en cirkulationspump (1, 15) utformad för att cirkulera kylmedel igenom kylkretsen (20). Kylkrets (20) enligt något av föregående krav, varvid kylkretsen (20) omfattar en styranordning (21 ), och varvid styranordningen (21) är utformad för att styra driften av pumphjulspumpen (9) för att reglera ett fluidtryck i kylkretsen (20). Kylkrets (20) enligt krav 5, varvid styranordningen (21) är utformad för att styra pumphastigheten hos pumphjulspumpen (9) för att reglera ett fluidtryck i kylkretsen (20). Kylkrets (20) enligt något av föregående krav, varvid expansionstanken (5) omfattar en tryckavlastningsventil (25) som utformats för att öppna sig mot omgivningen när ett tryck inuti expansionstanken (5) stiger över ett tröskeltryck. Kylkrets (20) enligt något av föregående krav, varvid kylkretsens (20) andra parti (23) är en del av värmeväxlaren (3). Kylkrets (20) enligt något av föregående krav, varvid avluftningsledningen (17) omfattar en flödesbegränsare (27). Kylkrets (20) enligt något av föregående krav, varvid avluftningsledningen (17) omfattar en ventil (27). Kylkrets (20) enligt krav 10, varvid kylkretsen (20) omfattar en styranordning (21), och varvid styranordningen (21) är utformad för att styra ett öppningsläge hos ventilen (27) för att reglera ett fluidtryck i kylkretsen (20). Kylkrets (20) enligt något av föregående krav, varvid kylkretsen (20) är en retarderkrets, utformad för att avlägsna värme som alstras av en retarder (1 ). Kylkrets (20) enligt krav 12, varvid retardern (1) är en hydrodynamisk retarder, och varvid kylkretsens (20) första parti (2') är anordnad uppströms om ett kylmedieinlopp (4) hos den hydrodynamiska retardern (1) i förhållande till en avsedd flödesriktning i riktning mot kylmedieinloppet (4). Hydrodynamisk retarderanordning (10), omfattande: - en hydrodynamisk retarder (1) utformad för att bromsa rotationen hos en axel (6) i ett fordon (30), och - en kylkrets (20) enligt något av de föregående kraven, varvid kylkretsen (20) är utformad för att avlägsna värme som alstras av den hydrodynamiska retardern (1). Hydrodynamisk retarderanordning (10) enligt krav 14, varvid anordningen (10) omfattar en styranordning (21) utformad för att driva pumphjulspumpen (9) i ett retarderkylningsläge, i vilket pumphjulspumpen (9) cirkulerar kylmedel genom ett arbetsutrymme (55) hos den hydrodynamiska retardern (1). Fordon (30) omfattande en kylkrets (20) enligt något av kraven 1-13, eller en hydrodynamisk retarderanordning (10) enligt något av kraven 14 eller 15.
SE2051001A 2020-08-31 2020-08-31 Coolant Circuit, Hydrodynamic Retarder Arrangement, and Vehicle SE545818C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE2051001A SE545818C2 (en) 2020-08-31 2020-08-31 Coolant Circuit, Hydrodynamic Retarder Arrangement, and Vehicle
DE102021121407.6A DE102021121407A1 (de) 2020-08-31 2021-08-18 Kühlmittelkreislauf, hydrodynamische Retarderanordnung und Fahrzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2051001A SE545818C2 (en) 2020-08-31 2020-08-31 Coolant Circuit, Hydrodynamic Retarder Arrangement, and Vehicle

Publications (2)

Publication Number Publication Date
SE2051001A1 SE2051001A1 (en) 2022-03-01
SE545818C2 true SE545818C2 (en) 2024-02-13

Family

ID=80221755

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2051001A SE545818C2 (en) 2020-08-31 2020-08-31 Coolant Circuit, Hydrodynamic Retarder Arrangement, and Vehicle

Country Status (2)

Country Link
DE (1) DE102021121407A1 (sv)
SE (1) SE545818C2 (sv)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021004154B3 (de) * 2021-08-12 2022-09-08 Daimler Truck AG Bremseinrichtung für ein Kraftfahrzeug
DE102021214728A1 (de) * 2021-12-20 2023-06-22 Mahle International Gmbh Kühlsystem
CN114475222B (zh) * 2022-03-09 2023-09-26 中国重汽集团济南特种车有限公司 一种电动矿用卡车的热管理系统及电动矿用卡车
DE102022123569A1 (de) 2022-09-15 2024-03-21 Voith Patent Gmbh Kühlkreislauf mit Retarder
DE102023105956B4 (de) * 2023-03-10 2024-09-19 Voith Patent Gmbh Hydrodynamischer Retarder mit Arbeitsmediumtank

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2287130A (en) * 1941-02-26 1942-06-23 Parkersburg Rig & Reed Company Hydrodynamic brake mechanism
US3190272A (en) * 1963-04-26 1965-06-22 Wagner Electric Corp Cooling system
DE10140220A1 (de) * 2001-08-16 2003-05-28 Zahnradfabrik Friedrichshafen Hydrodynamischer Retarder
US20100031901A1 (en) * 2007-02-09 2010-02-11 Volvo Lastvagnar Ab Coolant system
DE102010024765A1 (de) * 2010-06-23 2011-12-29 Daimler Ag Kraftfahrzeugkühlvorrichtung
US20170327099A1 (en) * 2015-02-04 2017-11-16 Voith Patent Gmbh Working medium circuit for a hydrodynamic machine
EP3330512A1 (en) * 2016-12-01 2018-06-06 Iveco Magirus Ag Cooling system of an internal combustion engine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2287130A (en) * 1941-02-26 1942-06-23 Parkersburg Rig & Reed Company Hydrodynamic brake mechanism
US3190272A (en) * 1963-04-26 1965-06-22 Wagner Electric Corp Cooling system
DE10140220A1 (de) * 2001-08-16 2003-05-28 Zahnradfabrik Friedrichshafen Hydrodynamischer Retarder
US20100031901A1 (en) * 2007-02-09 2010-02-11 Volvo Lastvagnar Ab Coolant system
DE102010024765A1 (de) * 2010-06-23 2011-12-29 Daimler Ag Kraftfahrzeugkühlvorrichtung
US20170327099A1 (en) * 2015-02-04 2017-11-16 Voith Patent Gmbh Working medium circuit for a hydrodynamic machine
EP3330512A1 (en) * 2016-12-01 2018-06-06 Iveco Magirus Ag Cooling system of an internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Urquhart C.D. et.al. "A Comparison of The Application of Centrifugal and Positive Displacement Pumps" In: Proceedings of the 17th International Pump Users Symposium, 2000, pp. 145-152, [retrieved on 2021-03-23] Retrieved from the Internet: < URL: http://oaktrust.library.tamu.edu/handle/1969.1/164070?show=full> *

Also Published As

Publication number Publication date
SE2051001A1 (en) 2022-03-01
DE102021121407A1 (de) 2022-03-03

Similar Documents

Publication Publication Date Title
SE545818C2 (en) Coolant Circuit, Hydrodynamic Retarder Arrangement, and Vehicle
EP3934954B1 (en) Method for controlling a vehicle in association with a descent, a powertrain and vehicle
US20250052260A1 (en) Hydraulic braking energy utilization for emergency steering, braking, charging accumulator(s), and/or work functions to reduce or prevent engine from overspeed, assist acceleration and/or unlimited towing
CN104386060A (zh) 用于静液压传动的速度控制系统
US20160116060A1 (en) Hydrostatic braking concept
US10982586B2 (en) Distributed cooling system for a work machine
CN117869056A (zh) 发动机冷却系统控制方法、装置与存储介质
US20160245149A1 (en) Hydraulic driven fan system
US7360357B2 (en) Hydraulic steering system with input horsepower limiting circuit and increased fan speeds at low engine RPM
US3526304A (en) Control system for converter lock-up clutch and retarders
EP4155142B1 (en) A vehicle energy management system, a vehicle comprising such a vehicle energy management system, and a method of controlling a vehicle energy management system
SE544940C2 (en) Method of Controlling a Hydrodynamic Retarder Arrangement, Control arrangement, Hydrodynamic Retarder Arrangement, and Vehicle
US4716730A (en) Hydrostatic drive
EP4656470A1 (en) A braking unit
CN115805850A (zh) 燃料电池电动车辆中的冷却系统和控制燃料电池电动车辆中的冷却系统的方法
CN113915248A (zh) 混合动力变速器冷却控制系统、方法、车辆及存储介质
SE544474C2 (en) Control device and method for controlling a hydraulic auxiliary brake arrangement
SE543120C2 (sv) A cooling system for an engine and a water retarder
EP4513012A1 (en) Transportation vehicle
US12163459B2 (en) Flow sharing control for multiple hydraulic fan motors
CN216975299U (zh) 一种基于开式泵驱动的风扇液压系统
EP4446618A1 (en) Oil system, control device and method for controlling oil supply to electrical machine
JP2934638B2 (ja) 冷却ファンの油圧駆動装置
WO2020067955A1 (en) Hydrodynamic retarder, method, and related devices
SE535725C2 (sv) Förfarande och system för att styra varvtal hos fläktmotor