Welcome to the FISITA Library

The FISITA Library is the central repository for all technical contributions from FISITA events and member-led output papers. Employees of FISITA Corporate Members get free access to the content here. People registered for FISITA events are provided with a special password in their confirmation email to access event-specific content here, for which abstracts can be browsed freely. Members of FISITA automotive engineering societies get discounted access. Find out about access and how anyone can register for instant access here.

The library includes all of the FISITA output papers plus content from the EuroBrake 2012-2021 events and the FISITA Intelligent Safety Conference 2020-2021, FISITA Web Congress, and FISITA World Mobility Summit. Use the drop-down list box on the right below to browse content from a particular event or type keywords into the search box below.

 

FISITA has over 10,000 papers in it content repository. Much of this is currently being migrated from go.fisita.com/store to this location. As content is added this page will be updated.

EB2012-ABT-13

Paper

Shi, Leilei, Li, Qing, Kim, Hunmo* - Sungkyunkwan University; Park, Manbok - Mando Co.

Detail

In this paper, the Hybrid Automatic Repeat Request (HARQ) scheme for Brake-by-Wire (BBW) system is presented. Recently, the use of electronic components is growing, so error signals will be encountered caused by Electromagnetic Interference (EMI).These error signals will cause system failures of BBW systems. To solve these problems in the BBW system, we design a HARQ scheme which is a combination of Forward Error Correction (FEC) scheme and Automatic Repeat Request (ARQ) scheme. FEC scheme uses Reed-Solomon (R-S) code to correct random errors and burst errors and ARQ scheme uses Cyclic Redundancy Check (CRC) code to detect errors in the systems. In this paper, the performance of FEC scheme, ARQ scheme and HARQ scheme is presented through the experiment and we see clearly how the fault tolerant logic for BBW system works.

EuroBrake 2012

Advanced Brake Technologies (ABT)

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EB2012-ABT-16

Paper

Boretti, Alberto - University of Ballarat

Detail

Mechanical kinetic energy recovery systems have been proposed so far as a driveline component made up of a flywheel, a clutch and a continuously variable transmission connected to the driving wheels and designed for long time and high energy storage and high power charge and discharge rate. In the approach proposed here, there are actually two small KERS, one acting individually on each wheel, made up of just a clutch, a CVT and the flywheel. In this system, braking on one of the two rear wheels otherwise not motored is obtained by engaging the CVT through the clutch. Then, the wheel reduces its speed while the flywheel accelerates. Powering of one of the two rear wheels is then obtained when needed by engaging again the CVT through the clutch. Then, the wheel increases its speed while the flywheel decelerates. When the clutch is disconnected, flywheel and rear wheel are decoupled. This configuration is aimed to a further reduce the complexity and further reduce the costs of the KERS. This KERS has same potentials to reduce the fuel consumption of the traditional driveline based KERS. The system also offers the benefits to produce same accelerations of a four wheel drive car powered by a larger engine with a two wheel drive arrangement.

EuroBrake 2012

Advanced Brake Technologies (ABT)

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EB2012-ABT-21

Paper

Andersen, Olaf, Meinert, Jens, Studnitzky, Thomas, Stephani, Günter* - Fraunhofer Institute for Manufacturing Engineering and Applied Materials Research
Kaina, Steffen, Kieback, Bernd - TU Dresden
Saame, Christoph, Münchhoff, Jan - AUDI AG
Mayer, Ralph - Daimler AG

Detail

A new concept for the improvement of cast vented brake disks has been developed which re-lies on the interesting properties of a new type of constructed material: 3D wire structures. This type of material shows a comparably high specific compressive modulus and strength combined with a large internal surface area which is completely accessible by external fluid flow. The high strength of the 3D wire structures is obtained by brazing of the wire joints. It is conceivable to replace the cast internal venting structure of a disk brake by 3D wire structures and hence improve the venting of the rotors. At the same time, considerable weight savings can be expected as a cast fin structure usually occupies about 50 vol% of the space between the rotors, whereas a 3D wire structure occupies only 10 to 20 vol% of the available space. Moreover, the narrow spacing of the 3D wire structure may account for a very homogeneous heat transfer, thus avoiding hot spots and improving the level of comfort. This paper discusses relevant mechanical and thermal properties of 3D wire structures with regard to their applica-tion in vented disk brakes.

EuroBrake 2012

Advanced Brake Technologies (ABT)

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EB2012-ABT-22

Paper

Putz*, Michael, Faul, Bernhard, Wunsch, Christian, Morgan, John E. - Vienna Engineering

Detail

The VE Brake is an electro-mechanical floating caliper disc brake (EMB) that uses a novel mechanism (effectively a mini crankshaft) with lowest possible friction in actuation, non linearity and a designable self amplification for very low actuation power, e.g. 100 W for mid size cars. It can cooperate for best regenerative braking and it can be designed to have no residual drag losses, both highly actual topics for electric and hybrid vehicles.


Earlier versions were intensely tested on a lab dynamometer. Latest road going versions are with fully integrated actuators are being developed for mid size SUV class vehicles. The new challenge was to fully protect the actuators (small electro motors with gears) and to integrate the actuators into the mechanical parts of the brake so that the brake fits into the given front axle, suspension and rim of standard SUV components maintaining the full steering angle, spring stroke and brake location without modifications. Both, a normal single channel design with one actuator for clamping forces and one for wear adjustment, and a two channel design with two clamping-force actuators and two wear adjustment actuators are presented.


This VE brake can be used as well in single channel design (saving costs) as in two-channel-design (for very high reliability purpose with few brakes, e.g. with only two brakes on motorcycles, city cars or even aircraft). In the conference paper it is shown how to solve the space issues for the single and the two channel design and how to adequately protect the complete actuation against impacts, dirt and salt water. Of course the wear adjustment can be done mechanically ( as with drum brakes). This version does it electrically to offer full flexibility of electronic control. It is also shown how the parameters of the brake could (if intended) even be changed "on the ride" by selecting the involved range of the eccentric part that changes transmission ratio, non-linearity and self amplification. Although these parameters have been unchanged on dynamometer tests the advantages of making them adjustable are shown, resulting in a further reduction in actuation power and size of mechanical parts.

EuroBrake 2012

Advanced Brake Technologies (ABT)

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EB2012-BC-02

Paper

Deichmann, Tobias*, Lathwesen, Holger - Sheet Cast Technologies GmbH

Detail

The SHEET CAST Technologies GmbH succeeded with the first SHEET CAST Disc in combining the weight and performance advantages of multi-part disc with simple and cost effective manufacturability. By the integration of radial elastic steel inlays into the sand core, which is inserted into the sand mold, a unique and serial production lightweight composite brake disc was developed. The production costs can be halved in comparison to others on shift-based composite brake discs. The weight advantage of the SC-Disc is surpassing all know technologies.


The newest evolution is designed for e-mobility based on a wheel hub motor. The package is perfectly aligned to external rotor electric motors. This solution is still in the patent application and celebrates its world premiere at EuroBrake in April 2012.

EuroBrake 2012

Braking Components & Systems (BC)