Off Topic-tråden, versjon 4(?)

[Rune-K]

Det er mye og si om E23 men her nøyer jeg meg med en ting. Jeg har jo endel brosjyrer om E23 og der vier de stor plass til den helt nye forstillingen de hadde konstruert. Stor var forbauselsen da jeg fikk min nye Z4 og så at den har nøyaktig den samme forstillingen som sjuern min. Bærearm, casterstag og fjærben, det holder. Tydelig at de viste hva de gjorde på 70 tallet.

[mr.pingu]

17 hours ago, Ingvaldsen said:

har noen noe form for troverdig dokumentasjon som tilsier dette ? virker jo helt fjernt å samtidig livsfarlig at bilen skal bremse kun bak.

kjørt mye med acc på vinterføre med 550d å da skulle jeg ved flere tilfeller fått en kjempevekker ved nedbremsing, men nei den bremset helt normalt uten noe form for overraskelser. 

Jeg har dessverre ikke kommet over noe dokumentasjon men kan likevel utdype litt hvorfor jeg tror det er logisk, altså bruk av bakbremsen. 
 

DSC / ant-spinn overvåker alle 4 hjul men i tilfelle av akselerasjon bremser den mest bakhjulene fordi DSC jobber kontinuelt med holde hastigheten på alle hjul lik. Spør du meg er det ganske logisk på RWD bil, jeg tipper på xDrive dette er litt mindre.

I tilfelle av bremsing tror jeg det er mer jevnt 
Så det er nok ikke bare bakbremsen.

 

jeg har sett flere observasjonen at folk som bruker ACC har økt slitasje på bakre klosser. Hva jeg tror at hvis det er bare små korrigering nødvendig at det går på ba bare bakbremsen.

Jeg har byttet klosser foran i nov 2022, bakre klosser i sept 2023. Når sist målte (dekkskift) var fremre 7mm og bakre 6mm. Jeg bruker ACC veldig ofte på E18. Og dette er ikke bare meg men del andre på nett og, men jeg har ikke oversikt hvilken modeller det gjelder. Kan godt hende at noen modeller bremser mer på bremsene foran. 
 

Uansett som @E.C. sa, bilen vet bår hengeren er på så jeg tror det går greit. Ellers hadde det stått i instruksjonsboka

Endret Juli 15 av mr.pingu

[mr.pingu]

18 hours ago, E.C. said:

Det nærmeste jeg har sett i TIS var at DSC fra E6x-generasjonen kunne slippe bakbremsen rett før man stopper, for å øke comfort og ha mindre backlash når man kommer til full stopp. Så at det kan trikses litt med bremseting for å øke komfort er ikke utenkelig (mulig større bruk av bakbrems gir mer jevn bremsing når man skal bremse bittelitt), men det er neppe i en slik grad at man merker det noe særlig. Jeg vet jo at bilen min bremser litt når jeg kjører på motorvei og det regner og den skal ha bremsene klare og tørre til enhver tid, men jeg merker ikke noe til det. Dessuten så vet bilen når henger er på, så om det skulle være problem å bruke henger med ACC hadde man nok fått et varsel.

Det du beskriver er blant annet dry braking & EBV.

 

DSC FUB fra TIS er ganske omfattende på F15:

 

Quote

The following system functions are described for the DSC:

• DTC: Dynamic Stability Control
• Brake standby through application at an early stage of the brake pads when required
• Dry braking of the brake discs on wet roads
• Fading compensation
• Drive-off assistant
• Cruise control with brake function
• electromechanical and hydraulic parking brake
• ABS: Antilock braking system
• EBV: Electronic brake force distribution
• CBC: Cornering brake control
• MSR: Engine drag torque control
• ASC: Automatic Stability Control
• DSC: Dynamic Stability Control
• DBC: Dynamic Braking Control
• Trailer Stability Control

Other known system functions for the DSC are:

The following additional functions that do not belong to driving dynamics control are integrated:

• RPA: Run Flat Indicator
• CBS: Condition Based Service

DTC: Dynamic Traction Control

DTC is a drive-optimised version of DSC for certain road conditions. The dynamic traction control (DTC) provides improved traction with partially reduced driving stability and is thus only recommended for exceptional situations. In the following exceptional situations, it can be useful to activate DTC briefly:

• When 'rocking free' or driving off in deep snow or on loose ground.
• When driving on snow-covered upward inclines, in slush as well as on uncleared roads
• When driving with snow chains.

The function DTC corresponds to that of DSC with a slightly modified control strategy. DTC can be activated by shutting down DSC (DTC button). With brake intervention, DTC replicates the function of a conventional differential interlock. This effect of this is to increase the input torque on those wheels that are on a higher-friction surface. Advantage: Higher traction is available with DTC. Interventions to stabilise the vehicle (e.g. reduction in the engine output) are carried out slightly later than in the case of DSC. In certain situations, the driver must intervene correctively to stabilise the vehicle.

Brake standby through application at an early stage of the brake pads when required

Application of the brake pads at an early stage shortens the response time of the brakes. With rapid closure of the throttle (angle of the accelerator pedal), the brake pads are applied immediately. The DSC creates a low brake pressure without perceptibly decelerating the vehicle. This compensates for the clearance between the brake pad and brake disc. If there is no braking within half a second, the created early brake pressure is taken back. Applying the brake pads at an early stage is active at a driving speed greater than 70 kph.

Dry braking of the brake discs on wet roads

Dry braking removes the moisture deposited on the brake disc when driving on wet roads or in the rain. Here, the brake pads are applied slightly. This function also shortens the brakes' response time. DSC employs a cyclical control process to reduce braking pressure in response to signals from the rain sensor and the position of the wash/wipe switch. This creates no measurable deceleration on the vehicle. The brake pads are cyclically applied. The brake discs are wiped regularly in the process. The frequency and duration of brake-pad applications varies according to:

• The intensity of the rain, e.g. speed of the wiper
• Driving speed greater than 70 kph

Fading compensation

Fading means: the braking effect diminishes due to high brake disc temperature. As a reaction to detected fading, DSC increases the brake pressure beyond the brake pressure applied by the driver. At very high brake disc temperature, the fading compensation leads to the following being displayed:

• Brake warning lamp in yellow
• Check Control symbol in the LC display in the instrument panel in yellow

The DSC detects fading as follows: The DSC compares the current vehicle deceleration with a setpoint value related to the current brake pressure. The DSC increases the brake pressure until the target deceleration is reached or until all the wheels are subject to ABS control. The operation is terminated when the brake pedal is no longer pressed or a speed threshold is undershot.

Drive-off assistant

When driving off on an incline, a change from the brake pedal to the accelerator pedal is required. Here, the drive-off assistant prevents the vehicle from rolling in the following situations:

• uphill in a forward gear
• uphill in reverse gear

Here, the brake pressure required to stop the vehicle is maintained. The gradient is picked up by the longitudinal acceleration sensor in the DSC control unit. The necessary braking torque or engine torque is calculated from the gradient. After detection of the wish to drive off, the brake pressure is reduced as soon as the applied engine torque is sufficient to move the vehicle in the desired direction of travel. If the parking brake is operated, the drive-off assistant is disabled. If there is no wish to drive off within approx. 2 seconds after releasing the brake pedal, the drive-off assistant is also disabled.

Cruise control with brake function

The functionality of the cruise control system with its braking function is integrated in DSC. The cruise control maintains the speed at the selected level, between 30 km/h and 250 km/h. In comparison with a conventional cruise control, it has the following additional functions:

• If the engine drag torque on coasting is not sufficient to maintain the selected speed, the DSC additionally decelerates by means of controlled brake intervention.
• Depending on the current lateral acceleration, the speed in longitudinal direction is lateral acceleration during controlled cornering. At the end of the bend, the required speed is reset.
• The so-called ”handgas mode” enables the driver to use the steering-column lever to continuously accelerate or decelerate in 2 stages. This means that the desired speed is reached more quickly.
• During controlled hill descent, the coasting cutout as well as shiftdown of the automatic gearbox are adapted. The DSC uses a substitute temperature model to regulate the distribution of torque between the front and rear axle. The coasting cutout has a favourable effect on fuel consumption. Automatic shiftdown and distribution of torque relieve the load on the wheel brake during hill descents.

EMF: electromechanical and hydraulic parking brake

The EMF is an electromechanical parking brake. DSC generates hydraulic stopping power whenever the engine is running. EMF uses an actuator to provide mechanical retaining force when the engine is off.

ABS: Antilock braking system

The antilock braking system (ABS) prevents the wheels from blocking on braking. Advantage: short stopping distance, the direction of the vehicle remains stable and the vehicle can be steered. The brake pressure on all wheels is regulated in such a way that each wheel runs in an optimised slip range. Here, the slip is regulated in such a way that the highest possible braking and cornering forces can be transferred.

EBV: Electronic brake force distribution

The electronic braking force distribution (EBV) is an element of the ABS. EBV regulates the braking force distribution between the front and rear axles depending on the vehicle load. Advantage: Independently of the vehicle load, optimised stopping distances with simultaneous high driving stability are achieved. The brake pads wear more evenly. If the ABS fails, the EBV function remains as long as possible. The EBV function requires the signals from at least 1 wheel speed sensors per axle.

CBC: Cornering brake control

The Cornering Brake Control (CBC) is an extension of the ABS. CBC increases driving stability when braking in curves (”curve logic”). Advantage: optimisation of the driving stability with partial braking on cornering. The shift in wheel loads on cornering (even with light braking) can reduce driving stability. If required, CBC creates a stabilising counter-torque outside of the ABS control range during light braking.

MSR: Engine drag torque control

The engine drag torque control (MSR) prevents the blocking tendency of the drive gear on smooth roadways. On downshifting or in the case of an abrupt load reversal (especially on a roadway with a low coefficient of friction), there is a danger that the drive gears block due to the engine drag torque. Via the wheel speed sensors, MSR detects the blocking tendency even as it is about to happen. MSR briefly reduces the engine drag torque by accelerating slightly. Advantage: The drive wheels retain their lateral stability in overrun mode.

ASC: Automatic Stability Control

The Automatic Stability Control (ASC) uses brake and engine interventions to prevent the wheels from spinning on accelerating. Advantage: More traction and better driving stability. If the wheels on the driven axle have different levels of adhesion, the wheel with the tendency to slip is braked. If necessary, the engine performance is also reduced.

DSC: Dynamic Stability Control

The current driving condition of the vehicle is detected by the dynamic stability control (DSC) by evaluation of the sensor signal. This driving condition is compared with the setpoint values determined using a calculation model. In this way, the system recognises unstable driving conditions. In the case of deviations that are above a control threshold stored in the DSC control unit, the vehicle is stabilised. The stabilisation (within physical boundaries) is achieved by reducing the engine performance and individual braking of wheels. DSC intervention override the functions ABS and ASC. The DSC function can be deactivated using a button.

DBC: Dynamic Braking Control

The Dynamic Braking Control (DBC) provides support in emergency braking situations by automatically boosting the brake pressure. Advantage: Shortest possible stopping distances in emergency braking situations by achieving ABS control operation on all four wheels. In emergency braking situations, it is frequently the case that the brake pedal is not pressed strongly enough. ABS control range is then not activated. In the following situations, the return pump increases the brake pressure until ABS control range is activated:

• Rapid operation of the brake pedal with inadequate brake pedal force
• When the brake pedal is depressed slowly and the demand for deceleration is subsequently high, after one wheel reaches the ABS control threshold. Which wheel locks first will depend will depend upon the vehicle's load factor and the road surface's coefficient of friction. Example of a typical situation: The traffic situation slows, making light braking necessary at first, but then demands as short a stopping distance as possible.

Trailer Stability Control

The trailer stabilisation control detects seesaw motion of a trailer around the vertical axis. The system works as of a speed of approx. 65 kph with the electrical connector for trailer occupied. The dynamic stability control (DSC) monitors the yawing motion of the vehicle with the help of the DSC sensors. If the limit value is exceeded on the swinging trailer, the engine output is reduced. The DSC also automatically brakes all 4 wheels. With disabled or defective DSC, the trailer stabilisation control is also disabled.

RPA: Run Flat Indicator

The Run Flat Indicator (RPA) is not a function of the driving dynamics control. The RPA is integrated in the DSC control unit, as for this function the 4 wheel speed signals are required. By comparing the wheel speeds of all four wheels, the system detects differences in the tyre rolling circumferences of the individual wheels. This enables a gradual tyre pressure loss to be detected. The Run Flat Indicator can be initialised in the Central Information Display (CID).

CBS: Condition Based Service

CBS is not a function of the driving dynamics control. Condition Based Service means ”demand-based service”. Various service operations and components such as engine oil and brake pads are integrated in CBS. The remaining distances for the front and rear brake pads are calculated separately in the DSC control unit. When making the calculation, the condition of the brake pad wear sensors is taken into account (data point at 6 mm and 4 mm).

In a running production change, the 2-stage brake pad wear sensor was discontinued in the F0x and F1x, where it was replaced by a single-stage brake pad wear sensor.

 

[mr.pingu]

EDIT: Ble 2x sammen svar

 

Endret Juli 15 av mr.pingu
fjernet duplikat tekst av forige svar

[Fredrik]

16 timer siden, Rune-K skrev:

Tydelig at de viste hva de gjorde på 70 tallet.

Helt klart og spesielt gjaldt dette for BMW, Mercedes-Benz og Porsche (selv om de essensielt kun hadde to modeller). Lamborghini var forøvrig veldig frempå på denne tiden med fabelaktige modeller som Miura/Countach og luksus GT'en Espada. Alle med Bizzarrini V12 motor. Det var egentlig ikke så merkelig at BMW ville ha litt av dette markedet med M1 (og forbindelsen til nettopp Lamborghini er spennende/skremmende litt avhengig av hvordan man ser på det).  

[Kvasi]

På 14.7.2024 den 11.55, Dusy skrev:

Xenon pærer

Ene xenon pæra på bilen røk her for et par dager siden. Hva anbefaler folk av pærer, egentlig? Virkelig en jungel dette her.

Eller bare oppgradere alle til LED? Da går det jo utover OEM looken på bilen.

Jeg har 9ers ledpærer i mine xenonlykter og det ble faktisk bedre enn forventet 👍

[sveigis]

@Fredrik 90

En e23 i god stand bør du få testet ,vet du hadde elsket den 😊

@Fredrik

Du har skrevet et flott sammendrag av e23 og kan tenke en opplevelse på Autobahnen må ha vært topp .😊

@Rune-K

Du har jo en meget flott bil som jeg liker og ser du skriver angående den nye bilen din.

Dette var jeg ikke klar over at det var likt .Stilig 😊

[Ron788m]

Noen som vet om det er mulig at en LED-bar virker sammen med adaptive xenon eller LED?  Tenker når den står i adaptive modus, og det ikke er hindringer i form av medgående og motgående biler.

[mr.pingu]

16 hours ago, Ron788m said:

Noen som vet om det er mulig at en LED-bar virker sammen med adaptive xenon eller LED?  Tenker når den står i adaptive modus, og det ikke er hindringer i form av medgående og motgående biler.

Ja det går an: 
XBB sier at de støtter til adaptive fjernlys. Men har du enkel av/på fjernlys assistent finnes det billigere løsninger.

Adaptive xenon har ikke adaptiv fjernlys bare vanlig lys. Fjernlys på xenon er altid av/på mener jeg å huske.

 

Fra https://www.xbb.se/en/faq/#efaq-fungerar-xbb-dongle-pa-bilar-med-led-matrix-och-automatisk-avblandning

Quote

 

Does the XBB Dongle® work on cars with LED Matrix and Auto Dimming?

Yes, it works. However, the recipe in question must have been developed for adaptive high beam, this is stated in the recipe description if/how this is available. 

However, if you have very powerful auxiliary lights or a powerful LED bar, the road signs may reflect back so much light that the car wants to turn off the high beam or redirect it, and then the XBB PowerUnit® output will also be turned off. 

It's worth considering that the risk of dazzling other road users increases when you install more lighting on your car than what the automation is adapted for, i.e. your auxiliary lights/LED bar shine much further than what the car's camera system can see.

 

Endret Juli 16 av mr.pingu

[Blinklys]

Opprettet egen tråd på temaet 

Endret Juli 16 av Blinklys

[Blinklys]

Opprettet egen tråd på temaet

Endret Juli 16 av Blinklys

[Markus E30]

Noen som selger noen bra hjul til F11? Fins jo ingenting bra på finn😆

[Daniel.]

Driver å leter etter felger/hjul selv og det finnes jo nesten bare kinafelger og godt kantkjørte originalfelger til høye priser 😕

[E.C.]

Men de kantkjørte felgene er jo alltid kantkjørt av tidligere eier, så da må det vel være greit? 😆

[Daniel.]

4 minutter siden, E.C. skrev:

Men de kantkjørte felgene er jo alltid kantkjørt av tidligere eier, så da må det vel være greit? 😆

Ja, er merkelig det der... Alltid tidligere eier som har gjort det 🤷‍♂️