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‘Braking’ Archives

BMW Innovation Intelligent Lightweight Construction

BMW Innovation Intelligent Lightweight Construction

How BMW is obsessed about weight. Reducing weight increases efficiency.   // // [Read More]

Tyres, the only thing that connects you to the road!

Tyres, the only thing that connects you to the road!

Tyres are the only thing that connects you with the road. Contact patch is of about the size of a postcard! Tyres are developed at the same time the vehicle is developed. Tyres are extensively tested to offer the maximum performance, sportiness, low  rolling resistance [Read More]

BMW Performance Parts

BMW Performance Parts

BMW Performance Parts explained by their designers. German, subtitles in English. // // [Read More]

Original BMW parts. Avoid counterfeits!!!

Original BMW parts. Avoid counterfeits!!!

The following video explains how counterfits are difficult to distinguish from the original products. Counterfeits can cause annoyance and even hazard to the vehicle occupants. An oil filter, disc brake and wheel rim are tested against original parts. // //   [Read More]

Standardized braking test – Vehicle and Brake System Data

Standardized braking test – Vehicle and Brake System Data

Vehicle Data Wheelbase 2754 mm Effective radius of tires 307 mm Centre of Gravity Height 565 mm Maximum speed 214 kph or 133 mph Maximum Gross Vehicle Weight 18394 N or Weight 1875 Kg Front axle Kerb Weight 820 N Rear axle Kerb Weight 565 N Brake Sytem Data Front disc brake [Read More]

Standardized braking test – Discussion and Conclusions

Standardized braking test – Discussion and Conclusions

Difficulties During Testing Because there were different braking areas along the track, the conditions for each braking test were slightly different. Therefore, the adhesion coefficient and consequently the rate of braking changed over each braking event. If more time had [Read More]

Standardized braking test – Brake Distribution

Standardized braking test – Brake Distribution

The following figure shows the Brake Distribution during the Test 1 and 2 at MIRA in the range 1.5 to 8MPa of Brake Line Pressure. The calculated Brake Distribution calculated is also shown in order to compare the results. It can be seen that both Brake Distributions behave [Read More]

Standardized braking test – Tests

Standardized braking test – Tests

A vehicle which ABS and EBS could be disconnected and selective front/rear/all axles braking was used. The vehicle has a front axle weight of 9352.9N and the rear axle weight of 7506.5N Four braking points were selected in the MIRA test track to perform the braking [Read More]

Boost ratio

Boost ratio

A static test was conducted with and without the booster function to determine the increase of brake line pressure with the assistance of a booster. Normal Booster function Test is conducted with the engine idling and at normal running temperature. Driver’s seat was [Read More]

Functionality of the EBD (Electronic Brake-Force Distribution)

Functionality of the EBD (Electronic Brake-Force Distribution)

Rearranging this equation is possible to find Master Cylinder Pressure (P(m)) : The modified Braking distribution ratio is: The following plot shows the Braking Distribution Ratio against the Master Cylinder Pressure. The EBD effect is shown by the double red line. The EDB [Read More]

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