SE466439B - Arrangement for drive force regulation in motor vehicles - Google Patents
Arrangement for drive force regulation in motor vehiclesInfo
- Publication number
- SE466439B SE466439B SE8900142A SE8900142A SE466439B SE 466439 B SE466439 B SE 466439B SE 8900142 A SE8900142 A SE 8900142A SE 8900142 A SE8900142 A SE 8900142A SE 466439 B SE466439 B SE 466439B
- Authority
- SE
- Sweden
- Prior art keywords
- comparator
- transverse acceleration
- driving
- reacting
- threshold value
- Prior art date
Links
- 230000001133 acceleration Effects 0.000 claims abstract description 30
- 230000008859 change Effects 0.000 claims abstract description 4
- 230000004913 activation Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 238000009987 spinning Methods 0.000 abstract 1
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- 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
- B60T8/175—Brake regulation specially adapted to prevent excessive wheel spin during vehicle acceleration, e.g. for traction control
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- 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
- B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
- B60K28/10—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle
- B60K28/16—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle responsive to, or preventing, skidding of wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18172—Preventing, or responsive to skidding of wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/12—Lateral speed
- B60W2520/125—Lateral acceleration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2520/00—Input parameters relating to overall vehicle dynamics
- B60W2520/26—Wheel slip
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
Description
i4é6 439 Tväraccelerationssignalen tjänar som styrsignal för bestäm- ning av trösklarna och utövar en påverkan på de logiska processerna, som i sin tur ändrar regleringsanordningen för påverkan av broms- och motormomenten. Jämfört med en fast slirningströskel innebär detta en väsentlig förbättring av anordningen. i4é6 439 The transverse acceleration signal serves as a control signal for thresholds and exert an influence on the logical processes, which in turn modifies the control device for influencing the braking and engine torques. Compared to a fixed slip threshold means this is a significant improvement of the device.
De i sammankopplingskretsen bildade signalerna kan såsom framgår av efterföljande underkrav och nedanstående beskrivning av ett utföringsexempel lätt användas till inkoppling av en extra allhjulsdrift (drivning av hjulen på en ytterligare axel) och därmed ytterligare öka säkerheten. Med fördel kan dessa signaler också användas till att variera ökningshastigheten hos broms- trycket för hjulbromsarna eller omställningshastigheten hos effekt- regleringsorganet, så att de medelst anordningen åstadkomma påverk- ningarna av bromsarna och drivningen blir mindre märkbara.The signals formed in the interconnection circuit may such as appears from the following subclaims and the description below of an exemplary embodiment can easily be used for connecting an extra all-wheel drive (driving the wheels on an additional axle) and thereby further increasing security. Advantageously, these signals can can also be used to vary the rate of increase of the brake the pressure of the wheel brakes or the changeover speed of the the regulating means, so that they by means of the device the brakes and drive become less noticeable.
Uppfinningen beskrivs närmare nedan under hänvisning till bifogade schematiska ritning över ett utföringsexempel på anord- ningen. y På ritningen har den kända drivslirningsregleringsanord- ningen visats schematiskt och endast i den utsträckning som er- fordras för förståelsen. I en låda 1, till vilken som insignaler förs från hjulvarvtalsgivare DF kommande hjulvarvtalssignaler är anbragt elektroniken till drivslirningsregleringen (i det _ följande kallad ASR), såvida den icke åskådliggjorts separat så- som anges i det följande. En utsignal 1a påverkar en vridmmmmtregu- lator 2, vilken i syfte att åstadkomma en effektminskning påver- kar ett regleringsorgan, här antytt såsom ett gasspjäll 3, hos den icke visade fordonsmotorn.The invention is described in more detail below with reference to attached schematic drawing of an exemplary embodiment of the device ningen. y In the drawing, the known drive slip control device has shown schematically and only to the extent required for understanding. In a box 1, to which input signals incoming wheel speed signals are transmitted from the wheel speed sensor DF the electronics are attached to the drive slip control (in the _ hereinafter referred to as ASR), unless it has been illustrated separately listed below. An output signal 1a affects a torque control lator 2, which in order to achieve a power reduction affects a regulating means, here indicated as a throttle 3, at the vehicle engine not shown.
Funktionssättet hos ASR förutsättes känt och har beskrivits ingående i DE A 3 127 302.The mode of operation of ASR is assumed to be known and has been described included in DE A 3 127 302.
Tväraccelerationsgivaren 7, efter vilken följer ett lågpass- filter 8, och tväraccelerationskomparatorn 9 utgör delar av ASR- elektroniken och är i och för sig förut kända. Parallellt med tväraccelerationskomparatorn 9 är kopplad en andra tväraccelera- tionskomparator 10, som är inställd på ett högre tröskelvärde.The transverse acceleration sensor 7, followed by a low-pass filter 8, and the transverse acceleration comparator 9 form part of the ASR electronics and are known per se. Parallel to the transverse acceleration comparator 9 is connected to a second transverse acceleration comparator 10, which is set to a higher threshold value.
Som insignal till bägge komparatorerna utnyttjas den filtrerade utsignalen från tväraccelerationsgivaren 7. Utsignalerna 9a och l0a från de bägge tväraccelerationskomparatorerna 9 och 10 förs 466 439 till en sammankopplingskrets 11, vilken endast schematiskt åskåd- liggjorts som ett block. _ Denna sammankopplingskrets 11 får också via en ledning 12 en utsignal från en i ASR-elektroniken 1 ingående körhastighets- komparator och via en ELLER-grind 13 en signal kallad "ASR-signal".The filtered one is used as an input signal to both comparators the output signal from the transverse acceleration sensor 7. The output signals 9a and 10a from the two transverse acceleration comparators 9 and 10 are passed 466 439 to an interconnection circuit 11, which is only schematically laid as a block. _ This interconnection circuit 11 also receives via a line 12 an output signal from a driving speed component included in the ASR electronics 1 comparator and via an OR gate 13 a signal called "ASR signal".
ELLER-grinden är via sina ingångar förbunden med ledningar 1a och 1b för utsignalerna från vridmomentregulatorn resp. bromsmoment- regulatorn 4 i utsignalen om det åtminstone föreligger en påverk- ningssignal 1a.The OR gate is connected via its inputs to lines 1a and 1b for the output signals from the torque regulator resp. braking torque the controller 4 in the output signal if there is at least one influence signal 1a.
Utsignalen från ELLER-grinden 13 används också till att via en ytterligare ELLER-grind 14 aktivera ett omställningsorgan 15, medelst vilket en allhjulsdrivning eller närmare bestämt driv- ningen av hjulen på en ytterligare axel kan inkopplas. Medelst ASR-signalen sker detta alltid när det åtminstone föreligger en páverkningssignal för vridmomentregulatorn.The output signal from the OR gate 13 is also used to via an additional OR gate 14 activate a switching means 15, by means of which an all-wheel drive or more particularly the wheels of an additional axle can be engaged. By The ASR signal always occurs when there is at least one impact signal for the torque regulator.
Enligt vad som ovan sagts får sammankopplingskretsen ll en körhastighetssignal på ledningen 12 om ett förutbestämt tröskel- värde för hastigheten överskridits, en första tväraccelerations- signal 9a om det för komparatorn 9 förutbestämda tröskelvärdet överskridits, en andra tväraccelerationssignal l0a om det för komparatorn 10 förutbestämda högre tröskelvärdet överskridits, och ASR-signalen från ELLER-grinden l3.According to what has been said above, the interconnection circuit ll a travel speed signal on line 12 about a predetermined threshold value for the speed has been exceeded, a first transverse acceleration signal 9a about the threshold value predetermined for the comparator 9 exceeded, a second transverse acceleration signal l0a if it for the predetermined higher threshold value of the comparator 10 has been exceeded, and the ASR signal from OR gate 13.
Vid en enkel uppbyggnad av sammankopplingskretsen ll är densamma sådan, att utsignalerna från tväraccelerationskompara- torerna 9 och lO direkt åstadkommer omställningen av slirnings- trösklarna i ASR-elektroniken l. Av de icke visade tre slirnings- komparatorerna för varje drivande hjul är därvid den med den lägsta slirningströskeln verksam när ingen tväraccelerations- signal föreligger. Detta skulle kunna vara fallet vid färd rakt, framåt. Om komparatorn 9 avger en utsignal 9a (liten till medel- hög tväracceleration) aktiveras istället för den första den andra slirningskomparatorn med högre slirningströskel via ledningen lla.In a simple construction of the interconnection circuit ll is the same such that the output signals from the transverse acceleration 9 and 10 directly effect the conversion of the slip the thresholds in the ASR electronics l. Of the three non-slip the comparators for each driving wheel are then the one with it lowest slip threshold effective when no transverse acceleration signal is present. This could be the case when driving straight, Forward. If the comparator 9 emits an output signal 9a (small to medium high transverse acceleration) is activated instead of the first the second the slippage comparator with higher slippage threshold via line 11a.
Uppträder vid kraftig tväracceleration en utsignal l0a från kom- paratorn lO, urkopplar denna den andra komparatorn och aktiverar ~istället den tredje med den högsta slirningströskeln via led- ningen llb. '4ee 439 Vid en mer påkostad uppbyggnad av sammankopplingskretsen kan denna exempelvis vara sådan, att en aktivering av slirnings- komparatorerna vid motsvarande tväraccelerationssignal endast sker om samtidigt föreligger en ASR-signal och/eller saknas en signal från körhastighetskomparatorn (låg hastighet under den förutbestämda tröskeln). Dessa relationer kan åstadkommas medelst enkla logiska kopplingsorgan.When a sharp transverse acceleration occurs, an output signal l0a from the the comparator 10, it disconnects the other comparator and activates ~ instead the third with the highest slip threshold via ningen llb. '4ee 439 In the case of a more expensive construction of the interconnection circuit this may, for example, be such that an activation of the slip the comparators at the corresponding transverse acceleration signal only occurs if an ASR signal is present at the same time and / or one is missing signal from the travel speed comparator (low speed below it predetermined threshold). These relationships can be achieved by simple logical coupling means.
Dessa utsignaler i någon av de just nämnda kombinationerna kan också användas till att ändra ökningshastigheten för broms- trycket i hjulbromsarna 5 och 6 liksom omställningshastigheten för effektregleringsorganet 3 till fordonsmotorn på samma sätt som den redan beskrivna ändringen av slirningströsklarna för att åstad- komma en bättre anpassning till de momentana betingelserna. Dessa signaler har på ritningen visats med streckade linjer llc och lld, som utgår från sammankopplingskretsen ll och inverkar på vridmomentregulatorn 2 resp. bromsmomentregulatorn 4.These outputs in any of the just mentioned combinations can also be used to change the rate of increase of the brake the pressure in the wheel brakes 5 and 6 as well as the changeover speed for the power control means 3 to the vehicle engine in the same manner as the already described change of the slip thresholds to achieve come a better adaptation to the current conditions. These signals have been shown in the drawing with dashed lines llc and lld, which starts from the interconnection circuit ll and affects torque regulator 2 resp. braking torque regulator 4.
Det är inte alltid motiverat att inkoppla allhjulsdriv- ningen enbart så länge som en ASR-signal föreligger. Vid särskilda framdrivningsutföranden, t.ex. vid allhjulsdrivning utan central- differential, är det lämpligt att särskilt vid låga värden på den tvärriktade accelerationen, fördröja urkopplingen av allhjuls- drivningen för att undvika pendlande in- och urkopplingar av den- samma. För detta ändamål är i sammankopplingskretsen ll anordnat ett ytterligare, icke visat logiskt kopplingsorgan, vars utsignal lle påverkar ett monostabilt tidsorgan 16 och därvid aktiverar detta för en förutbestämd tidsperiod under den bestämda betingelse“ som börjar med upphörandet av ASR-signalen. Dettas utsignal påver- kar kopplingsorganet 15 via ELLER-grinden l4 och förlänger tiden H för detsammas aktivering. J Det kan också vara lämpligt att icke genomföra denna för- dröjning av urkopplingen om exempelvis ingen körhastighetssignal föreligger (låg körhastighet) samtidigt med stor tväracceleration (snäv kurva). Detta kan också lätt uppnås medelst ännu ett, icke heller visat logiskt kopplingsorgan, vilket användes som spärrkrets för signalen lle.It is not always justified to engage all-wheel drive only as long as an ASR signal is present. At special propulsion designs, e.g. for all-wheel drive without central differential, it is appropriate to especially at low values of the transverse acceleration, delay the disengagement of the all-wheel drive drive to avoid oscillating connections and disconnections of the same. For this purpose, the interconnecting circuit 11 is arranged a further logic coupling means, not shown, whose output signal lle actuates a monostable timer 16 and thereby activates this for a predetermined period of time under the specified condition " beginning with the termination of the ASR signal. This output signal affects the coupling means 15 via the OR gate 14 and extends the time H for its activation. J It may also be appropriate not to implement this delay of the disconnection if, for example, no travel speed signal is present (low driving speed) at the same time as high transverse acceleration (tight curve). This can also be easily achieved by another, no also shown logic switching means, which was used as a blocking circuit for the signal lle.
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8900142A SE466439B (en) | 1985-12-21 | 1989-01-16 | Arrangement for drive force regulation in motor vehicles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19853545716 DE3545716A1 (en) | 1985-12-21 | 1985-12-21 | Device for controlling the drive on motor vehicles |
SE8900142A SE466439B (en) | 1985-12-21 | 1989-01-16 | Arrangement for drive force regulation in motor vehicles |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8900142L SE8900142L (en) | 1989-01-16 |
SE8900142D0 SE8900142D0 (en) | 1989-01-16 |
SE466439B true SE466439B (en) | 1992-02-17 |
Family
ID=25839268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8900142A SE466439B (en) | 1985-12-21 | 1989-01-16 | Arrangement for drive force regulation in motor vehicles |
Country Status (1)
Country | Link |
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SE (1) | SE466439B (en) |
-
1989
- 1989-01-16 SE SE8900142A patent/SE466439B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
SE8900142L (en) | 1989-01-16 |
SE8900142D0 (en) | 1989-01-16 |
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