SE423368B - PROCEDURE TO PREVENT SLIDING OR SLIDING BETWEEN DRIVE WHEELS AND SUBSTANCES OF SEPARATELY MULTI-AXIC VEHICLE DRIVE SYSTEM WITH HYDROSTATIC POWER TRANSMISSION - Google Patents

PROCEDURE TO PREVENT SLIDING OR SLIDING BETWEEN DRIVE WHEELS AND SUBSTANCES OF SEPARATELY MULTI-AXIC VEHICLE DRIVE SYSTEM WITH HYDROSTATIC POWER TRANSMISSION

Info

Publication number
SE423368B
SE423368B SE8006455A SE8006455A SE423368B SE 423368 B SE423368 B SE 423368B SE 8006455 A SE8006455 A SE 8006455A SE 8006455 A SE8006455 A SE 8006455A SE 423368 B SE423368 B SE 423368B
Authority
SE
Sweden
Prior art keywords
power transmission
speed
hydraulic pressure
hydraulic
wheels
Prior art date
Application number
SE8006455A
Other languages
Swedish (sv)
Other versions
SE8006455L (en
Inventor
T Johnsson
N T A Skoglund
Original Assignee
Volvo Flygmotor 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 Volvo Flygmotor Ab filed Critical Volvo Flygmotor Ab
Priority to SE8006455A priority Critical patent/SE423368B/en
Priority to GB08207004A priority patent/GB2116657B/en
Priority to FI820848A priority patent/FI75529C/en
Priority to JP57037346A priority patent/JPS58156450A/en
Priority to CA000398263A priority patent/CA1182191A/en
Priority to DE19823209071 priority patent/DE3209071A1/en
Priority to AU81504/82A priority patent/AU551635B2/en
Priority to FR8204309A priority patent/FR2523057B1/en
Publication of SE8006455L publication Critical patent/SE8006455L/xx
Publication of SE423368B publication Critical patent/SE423368B/en

Links

Classifications

    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
    • B61C15/08—Preventing wheel slippage
    • B61C15/12—Preventing wheel slippage by reducing the driving power
    • 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
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • 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
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/58—Combined or convertible systems
    • B60T13/585—Combined or convertible systems comprising friction brakes and 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/1701—Braking or traction control means specially adapted for particular types of vehicles
    • B60T8/1705—Braking or traction control means specially adapted for particular types of vehicles for rail vehicles
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
    • B60T8/3235—Systems specially adapted for rail vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
    • B61C15/14—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels controlling distribution of tractive effort between driving wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
    • B61C9/08—Transmission systems in or for locomotives or motor railcars with IC reciprocating piston engines
    • B61C9/14—Transmission systems in or for locomotives or motor railcars with IC reciprocating piston engines hydraulic, including combinations with mechanical gearing
    • B61C9/16—Transmission systems in or for locomotives or motor railcars with IC reciprocating piston engines hydraulic, including combinations with mechanical gearing using gearing of the hydrostatic type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
    • B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Fluid Gearings (AREA)
  • Regulating Braking Force (AREA)
  • Control Of Transmission Device (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Description

*8006455-3 2 » M varvtalet hos hjulen på varje hjulaxel och jämför detta med varvtalet hos en frirullande hjulaxel eller ett frirullande hjul på fordonet samt_att man vid konstaterade skillnader mellan dessa varvtal, vilka skillnader överstiger ett förutbestämt gränsvärde och är av längre gvaraktighet än en förutbestämd minsta tid, utlöser en impuls till _reglersystemet för minskning av hydraultrycket P i kraftöverföringen under en förutbestämd tidsperiod. * 8006455-3 2 »M the speed of the wheels on each wheel axle and compare this with the speed of a free-rolling wheel axle or a free-rolling wheel on the vehicle and_that at observed differences between these speeds, which differences exceed a predetermined limit value and are of longer durability than a predetermined minimum time, triggers an impulse to the control system to reduce the hydraulic pressure P in the power transmission for a predetermined period of time.

Tack vare uppfinningen kan säkerheten vid inbromsning av for- don med drivsystem med hydrostatisk kraftöverföring ökas högst betyd- ligt och¿samtidigt kan accelerations- och framdrivningskraften steg- ras och göras jämnare. "Genom den bättre inbromsningsförmågan förbil- ligas hjulunderhållet särskilt när det gäller rälsgående fordon och som helhet kan detta förfarande tillämpas med mycket enkla_och därmed 'billiga åtgärder vid reglersystem för hydrostatiska kraftöverföring- ar.Thanks to the invention, the safety when braking vehicles with drive systems with hydrostatic power transmission can be increased very significantly and at the same time the acceleration and propulsion force can be increased and made more even. "Due to the better braking ability, wheel maintenance is made cheaper, especially in the case of rail vehicles, and as a whole this procedure can be applied with very simple_and thus' cheap measures in control systems for hydrostatic power transmissions.

Uppfinningen beskrives närmare nedan under hänvisning till bi- fogade ritning, på vilken fig. 1 visar en schematisk perspektivvy av ett hydrostatiskt drivet tåg, fig. 2 visar ett blockschema över reg- leringsfunktioner vid ett hydrostatiskt drivsystem som utnyttjas vid det nyssnämnda tåget och figÄ Ba och b visar slutligen ett tidsfunk. tionsschema för de erforderliga regleringsparametrarna för den hydro- statiska kraftöverföringen enligt uppfinningen. , Såsom framgår av ritningen skall förfarandet enligt uppfinning- en beskrivas i första hand tillämpat på ett hydrostatiskt drivsystem för ett tåg. Drivkraftkällan utgöres härvid av en förbränníngsmotor 1, som på lämpligt sätt är drivande förbunden med ett par hydraul- pumpar 2. Dessa pumpar 2 driver var sin hydraulmotor 3, vilka vial kuggväxlar 4 driver var sin hjulaxel 5. Vid det visade utförings- exemplet utgöres hydraulpumparna 2 av kända axialkolvpumpar med ett deplacement qlp, som är varierbart genom omställning av utsvängnings- eller okvínkeln, medan hydraulmotorerna 3 har fast deplacement q>m (även om variabelt motordeplacement är fullt möjligt).The invention is described in more detail below with reference to the accompanying drawing, in which Fig. 1 shows a schematic perspective view of a hydrostatically driven train, Fig. 2 shows a block diagram of control functions in a hydrostatic drive system used in the above-mentioned train and Fig. Ba and b finally shows a time function. diagram for the required control parameters for the hydrostatic power transmission according to the invention. As can be seen from the drawing, the method according to the invention will be described primarily applied to a hydrostatic drive system for a train. The driving power source is in this case an internal combustion engine 1, which is suitably connected to a pair of hydraulic pumps 2. These pumps 2 each drive their own hydraulic motor 3, which vial gears 4 each drive their own wheel axle 5. In the embodiment shown, the hydraulic pumps are 2 of known axial piston pumps with a displacement qlp, which is variable by adjusting the swing-out or angular angle, while the hydraulic motors 3 have a fixed displacement q> m (although variable motor displacement is entirely possible).

För reglering av det av hydraulmotorerna alstrade drivmomen- tet finns också ett reglersystem, till största delen inrymt i en reglerenhet 6. Detta system innefattar olika lämpliga och kända men icke närmare visade givarorgan för erforderliga regleringsparametrar för den hydrostatiska kraftöverföringen, såsom drivmotorvarvtalet N, pumpdeplacementet Np, motordeplacementet dnloch eventuellt också hydraultrycket P i kraftöverföringen. Dessutom finns en icke heller visad varvtalsgivare för en icke driven eller frirullande hjulaxel 7 i tåget. 8006455-*5 3 _,_ På basis av de av givarorganen fastställda momentanvärdena för de nämnda regleringsparametrarna beräknas nu enligt uppfinningen kontinuerligt i reglerenheten 6 varvtalet hos hjulen på varje hjul- axel 5 och jämförs med varvtalet hos det frirullande hjulet eller hjulaxeln 7. Om därvid en skillnad mellan dessa varvtal konstateras i reglerenheten 6, vilken skillnad alltså beror på att någon eller några av de drivna hjulaxlarna antingen roterar fortare än den fri- rullande hjulaxeln 7, dvs. slirar under acceleration, eller långsam- mare än denna, dvs. glider i låst tillstånd mot underlaget under bromsning, och denna skillnad visar sig överstiga ett förutbestämt gränsvärde och dessutom varar längre än en förutbestämd minsta tid, så utlöses i reglerenheten 6 en impuls för sänkning av hydraultrycket P så mycket att slirningen eller glidningen upphör, dvs. likhet mel- lan varvtalen åstadkommes. Med andra ord uttryckt kan man säga att man återställer flödesbalansen i det hydrostatiska drivsystemet.For controlling the drive torque generated by the hydraulic motors, there is also a control system, mostly housed in a control unit 6. This system comprises various suitable and known but not shown sensors for required control parameters for the hydrostatic power transmission, such as the drive motor speed N, the pump displacement Np , the engine displacement dnloch possibly also the hydraulic pressure P in the power transmission. In addition, there is also a speed sensor (not shown) for a non-driven or free-rolling wheel axle 7 in the train. 8006455- * 5 3 _, _ On the basis of the instantaneous values determined by the sensor means for the said control parameters, the speed of the wheels on each wheel axle 5 is now calculated continuously in the control unit 6 and compared with the speed of the free-rolling wheel or wheel axle 7. If a difference between these speeds is found in the control unit 6, which difference is thus due to one or some of the driven wheel axles either rotating faster than the free-rolling wheel axle 7, ie. slips during acceleration, or slower than this, ie. slides in the locked state against the ground during braking, and this difference turns out to exceed a predetermined limit value and also lasts longer than a predetermined minimum time, so in the control unit 6 an impulse for lowering the hydraulic pressure P is triggered so much that slipping or sliding ceases, ie. similarity between speeds is achieved. In other words, you can say that you restore the flow balance in the hydrostatic drive system.

Värdet Pi på trycket i det hydrostatiska drivsystemet, som rådde då denna varvtalsskillnad uppmättas och trycksänkningen påbörjades lagras i en minnesenhet i reglerenheten 6 och efter en förutbestämd tid avger reglerenheten 6 en ny impuls för ökning av hydraultrycket P, dock till en nivå IE, som ligger klart under ingångsvärdet Pi.The value Pi of the pressure in the hydrostatic drive system, which prevailed when this speed difference was measured and the pressure drop started, is stored in a memory unit in the control unit 6 and after a predetermined time the control unit 6 emits a new impulse to increase the hydraulic pressure P, however to a level IE, which is well below the input value Pi.

Härigenom tillförsäkras att slirnings- eller glidningstillståndet icke genast återkommer på nytt. Efter ännu en förutbestämd tid av- ger reglerenheten sedan till slut en ny impuls för återställande av hydraultrycket till värdet Pi. 7 Som praktiska exempel på värdena vid regleringsförfarandet enligt föreliggande uppfinning hänvisas till fig. 3 på ritningen och de däri visade diagrammen över de viktigaste reglerparametrarna, varav framgår att man med 6ü millisekunders intervall utför jämförel- se mellan verkligt och beräknat hjulvarvtal och vid konstaterade skillnader över ett förutbestämt minimivärde minskar hydraultrycket . P i kraftöverföringen så att slirningen eller glidningen mellan drivan- de hjulaxlar och underlag upphör. Efter en förutbestämd tidsperiod ökar reglersystcmet sedan åter hydraultrycket men endast till en ni- vå Pr, som utgör ca 80% av Pi. hetta reducerade tryck upprätthålls under en förutbestämd tidsperiod av i detta fall 10 sekunder, varef- ter en ny impuls från reglersystemet bringar hydraultrycket till att återta värdet Pi.This ensures that the slip or slip condition does not return immediately. After another predetermined time, the control unit then finally emits a new impulse for resetting the hydraulic pressure to the value Pi. As a practical example of the values in the control method according to the present invention, reference is made to Fig. 3 of the drawing and the diagrams shown therein of the most important control parameters, from which it is shown that at 6ü millisecond intervals comparisons are made between actual and calculated wheel speeds. a predetermined minimum value reduces the hydraulic pressure. P in the power transmission so that the slippage or slippage between the driving wheel axles and the ground ceases. After a predetermined period of time, the control system then increases the hydraulic pressure again, but only to a level Pr, which constitutes about 80% of Pi. heat reduced pressures are maintained for a predetermined time period of in this case 10 seconds, after which a new impulse from the control system causes the hydraulic pressure to regain the value Pi.

Fördelarna med reglerförfarandet enligt föreliggande uppfin- ning är många. För det första räcker ett enda mätvärde, nämligen varvtalet hos ett enda frirullande hjul eller en enda frirullandeThe advantages of the control procedure according to the present invention are many. First, a single measured value is sufficient, namely the speed of a single free-rolling wheel or a single free-rolling wheel.

Claims (2)

8006455-3 I u .hjulaxel 7 för verkställandet av regleringen; Med andra ord erford- ras endast en enda varvtalsgivare, något som innebär väsentliga kost- nadsbesparingar gentemot tidigare tillämpade reglerförfaranden där -varvtalsmätning fordras på varje driven hjulaxel. Sådana varvtals- mätutrustningar är nämligen i sig själva relativt dyrbara och också något störningskänsliga samt fordrar regelbundet underhåll. Särskilt i tillämpningen på rälsgående fordon där många hjulaxlar är drivna innebär då förfarandet enligt uppfinningen ett väsentligt förbilli- gande. Vidare bör varvtalet hos den drivande förbränningsmotorn 1 hållas konstant och detta kan lätt uppnås med förfarandet enligt upp- finningen. Genom att slirning och glidning mellan hjul och underlag i stor utsträckning elimineras minskas också i hög grad underhålls- kostnaderna för fordonshjulen, vilka kostnader i många fall kan bli rätt betydande. Såsom nämnts inledningsvis ökas också säkerheten vid inbromsning och möjliggöres ökad och jämnare acceleration av fordonet. , r Det är också uppenbart för fackmän att uppfinningen utan be- gränsning av ovanstående detaljbeskrivning kan modifieras och varie- ' ras i olika avseenden inom ramen för de efterföljande patentkraven. Sålunda kan en enda hydraulpump 2 driva flera hydraulmotorer 3. För- farandet är icke heller begränsat till rälsgående fordon utan kan användas vid andra typer av fordon med hydrostatisk kraftöverföring, t.ex. bussar. Pat entkravi8006455-3 I u .wheel shaft 7 for the execution of the regulation; In other words, only a single speed sensor is required, which means significant cost savings compared to previously applied control procedures where -speed measurement is required on each driven wheel axle. Such speed measuring equipment is in itself relatively expensive and also somewhat sensitive to interference and requires regular maintenance. Especially in the application to rail vehicles where many wheel axles are driven, the method according to the invention then entails a significant reduction. Furthermore, the speed of the driving internal combustion engine 1 should be kept constant and this can be easily achieved with the method according to the invention. By largely eliminating slipping and slipping between wheels and surfaces, the maintenance costs for vehicle wheels are also greatly reduced, which costs can in many cases be quite significant. As mentioned in the introduction, the safety during braking is also increased and increased and more even acceleration of the vehicle is made possible. It is also obvious to those skilled in the art that the invention can be modified and varied in various respects within the scope of the appended claims without limiting the above detailed description. Thus, a single hydraulic pump 2 can drive several hydraulic motors 3. The process is also not limited to rail vehicles but can be used in other types of vehicles with hydrostatic power transmission, e.g. buses. Pat entkravi 1. I Förfarande för att förhindra slirning eller glidning mellan jdrivhjul och underlag vid särskilt fleraxliga fordonsdrivsystem med hydrostatisk kraftöverföring, som innefattar minst en av en motor med varvtalet (N) driven hydraulpump och minst en hydraulmotor, och som har ett hydraultryck (P), vilket medelst ett reglersystem reg- leras för ändring av drivmomentet på hydraulmotorn, k ä n n e t e c k- -n a t av att man ur ögonblicksvärdena för erforderliga reglerings- parametrar för den hydrostatiska kraftöverföringen, såsom motorvarv- talet (N), pumpdeplacementet (Q D), motordeplacementet (Q m) och/ eller hydraultrycket (P) i kraftöverföringen kontinuerligt beräknar varvtalet hos hjulen på varje hjulaxel och jämför detta med varvta- let hos en frirullande hjulaxel på fordonet, samt att man vid kon- staterade skillnader mellan dessa varvtal, vilka skillnader översti- ger ett förutbestämt gränsvärde och är av längre varaktighet än en förutbestämd minsta tid, utlöser en impuls till reglersystemet för minskning av hydraultrycket (P) i kraftöverföringen under en förut- bestämd tidsperiod. 8006455-3 5I Method for preventing slippage or slippage between drive wheels and surfaces in particularly multi-axle vehicle drive systems with hydrostatic power transmission, comprising at least one hydraulic pump driven by a motor (N) and at least one hydraulic motor, and having a hydraulic pressure (P), which is regulated by means of a control system for changing the drive torque of the hydraulic motor, characterized in that the instantaneous values of the required control parameters for the hydrostatic power transmission, such as the engine speed (N), the pump displacement (QD), the motor displacement (Q m) and / or the hydraulic pressure (P) in the power transmission continuously calculates the speed of the wheels on each wheel axle and compares this with the speed of a free-rolling wheel axle on the vehicle, and that if differences were found between these speeds, which differences exceed - gives a predetermined limit value and is of longer duration than a predetermined minimum time, triggers an impulse to rule the system for reducing the hydraulic pressure (P) in the power transmission for a predetermined period of time. 8006455-3 5 2. Förfarande enligt patentkravet 1, k ä n n e t e c k n a t av att det värde (Pi) på hydraultrycket i kraftöverföringen, som råd- de då tryckminskningen utlöstes, lagras i en minnesenhet i regler- enheten (6) och att hydraultrycket efter minskningen under en förut- bestämd tidsperiod åter ökas men till en lägre nivå (Pr) än ingångs- trycket (Pi), vilken mellanliggande trycknivå sedan upprätthålls un- der ytterligare en förutbestämd tidsperiod, innan hydraultrycket åter stegras till ingångsvärdet (Pi).Method according to claim 1, characterized in that the value (Pi) of the hydraulic pressure in the power transmission, which prevailed when the pressure reduction was triggered, is stored in a memory unit in the control unit (6) and that the hydraulic pressure after the reduction during a predetermined fixed time period is again increased but to a lower level (Pr) than the inlet pressure (Pi), which intermediate pressure level is then maintained for another predetermined time period, before the hydraulic pressure is again raised to the inlet value (Pi).
SE8006455A 1980-09-15 1980-09-15 PROCEDURE TO PREVENT SLIDING OR SLIDING BETWEEN DRIVE WHEELS AND SUBSTANCES OF SEPARATELY MULTI-AXIC VEHICLE DRIVE SYSTEM WITH HYDROSTATIC POWER TRANSMISSION SE423368B (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
SE8006455A SE423368B (en) 1980-09-15 1980-09-15 PROCEDURE TO PREVENT SLIDING OR SLIDING BETWEEN DRIVE WHEELS AND SUBSTANCES OF SEPARATELY MULTI-AXIC VEHICLE DRIVE SYSTEM WITH HYDROSTATIC POWER TRANSMISSION
GB08207004A GB2116657B (en) 1980-09-15 1982-03-10 Preventing wheel slip
FI820848A FI75529C (en) 1980-09-15 1982-03-11 A method for preventing slippage or sliding between drive wheels and supports in particular multi-axis vehicle drive systems with hydrostatic power transmission.
JP57037346A JPS58156450A (en) 1980-09-15 1982-03-11 Antiskid method of car
CA000398263A CA1182191A (en) 1980-09-15 1982-03-12 Method for preventing slip or skid between driving wheels and ground in vehicle drive systems of multiple-axle type with hydrostatic power transmission
DE19823209071 DE3209071A1 (en) 1980-09-15 1982-03-12 METHOD FOR PREVENTING SLIP OR SLIDING OF DRIVE WHEELS ON THE BASE IN VEHICLE DRIVE SYSTEMS FOR TYPES WITH MULTIPLE AXLES AND HYDROSTATIC POWER TRANSMISSION
AU81504/82A AU551635B2 (en) 1980-09-15 1982-03-15 Preventing skid and slip hydrostatic transmission
FR8204309A FR2523057B1 (en) 1980-09-15 1982-03-15 METHOD FOR AVOIDING SKATING OR SLIDING BETWEEN DRIVING WHEELS AND GROUND IN MULTI-AXLE VEHICLE DRIVE SYSTEMS WITH HYDROSTATIC POWER TRANSMISSION

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE8006455A SE423368B (en) 1980-09-15 1980-09-15 PROCEDURE TO PREVENT SLIDING OR SLIDING BETWEEN DRIVE WHEELS AND SUBSTANCES OF SEPARATELY MULTI-AXIC VEHICLE DRIVE SYSTEM WITH HYDROSTATIC POWER TRANSMISSION
FI820848A FI75529C (en) 1980-09-15 1982-03-11 A method for preventing slippage or sliding between drive wheels and supports in particular multi-axis vehicle drive systems with hydrostatic power transmission.
AU81504/82A AU551635B2 (en) 1980-09-15 1982-03-15 Preventing skid and slip hydrostatic transmission

Publications (2)

Publication Number Publication Date
SE8006455L SE8006455L (en) 1982-03-16
SE423368B true SE423368B (en) 1982-05-03

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SE8006455A SE423368B (en) 1980-09-15 1980-09-15 PROCEDURE TO PREVENT SLIDING OR SLIDING BETWEEN DRIVE WHEELS AND SUBSTANCES OF SEPARATELY MULTI-AXIC VEHICLE DRIVE SYSTEM WITH HYDROSTATIC POWER TRANSMISSION

Country Status (8)

Country Link
JP (1) JPS58156450A (en)
AU (1) AU551635B2 (en)
CA (1) CA1182191A (en)
DE (1) DE3209071A1 (en)
FI (1) FI75529C (en)
FR (1) FR2523057B1 (en)
GB (1) GB2116657B (en)
SE (1) SE423368B (en)

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CN103935380B (en) * 2014-04-25 2016-03-09 南车株洲电力机车有限公司 A kind of control method of locomotive air skid control system and device
CN108572259A (en) * 2017-03-09 2018-09-25 华东交通大学 A kind of novel locomotive speed measuring device
DE102017212744A1 (en) * 2017-07-25 2019-01-31 Zf Friedrichshafen Ag drive arrangement
CN108791324B (en) * 2018-07-16 2023-06-20 湖南工业大学 Heavy-duty locomotive traction total amount consistency system and control distribution method
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Also Published As

Publication number Publication date
FR2523057A1 (en) 1983-09-16
AU551635B2 (en) 1986-05-08
GB2116657B (en) 1986-01-08
GB2116657A (en) 1983-09-28
FI75529B (en) 1988-03-31
AU8150482A (en) 1983-09-22
CA1182191A (en) 1985-02-05
DE3209071A1 (en) 1983-09-22
FI820848L (en) 1983-09-12
FI75529C (en) 1988-07-11
FR2523057B1 (en) 1985-12-06
SE8006455L (en) 1982-03-16
JPS58156450A (en) 1983-09-17

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