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Technical Paper

Electronic Braking System EBS - Status and Advanced Functions

1998-11-16
982781
Since 1996 a 2nd Generation EBS has been available in Europe as an advanced brake system offering a variety of advantages to the OEM as well as to the truck and fleet owner. EBS enhances vehicle safety and improves the braking performance to a “passenger car like” braking feel, allowing less experienced drivers better vehicle handling. The brake lining wear control and retarder integration allow the reduction of operational costs. The safety enhancements achieved by EBS in conjunction with disc brakes, are rewarded by European truck insurance companies by lower insurance fees. The importance of EBS will still gain significantly through the developments in process. EBS is the platform for ESP and ACC, which will be a major contributer to better integration of trucks in dense traffic flow.
Technical Paper

Vehicle Dynamics Control for Commercial Vehicles

1997-11-17
973284
This paper presents the Vehicle Dynamics Control (VDC) for commercial vehicles developed by BOSCH. The underlying physical concept is discussed in the second section after a short introduction. The third section shows the computer simulation used in the development process. Section four describes the controller structure of the VDC system. In Section five the use and effectiveness of VDC for commercial vehicles is shown in different critical driving situations. This is done by using measured data collected during testing (lane change, circular track) and it demonstrates that the safety improvements achieved for passenger cars are also possible for commercial vehicles.
Technical Paper

Anti-Lock Braking System for Commercial Vehicles

1988-10-01
881821
Commercial vehicles must convey people and goods safely and reliable, irrespective of the weather and road conditions. The ABS safety braking systems are an essential prerequisite for fulfillment of this primary task. ABS has been used in European commercial vehicles since 1981. Today there are already fittet as standard in buses to some extend. The contribution to increasing road safety is causing the European lawmakers to make ABS statutory for commercial vehicles and to make it part of their compulsory equipment. Suitable anti-lock braking systems and closed loop configurations for commercial vehicles are demonstrated by theoretical observations and technical driving trials, their axlespecific and closed-loop control characteristics are highlighted.
Technical Paper

Antilock Braking Systems (ABS) for Commercial Vehicles - Status 1990 and Future Prospects

1990-10-01
901177
The paper begins with an overview of the history of ABS for commercial vehicles followed by a brief description of the technology of the BOSCH ABS at the time it went into mass production in 1981. Subsequently it describes the field experiences with ABS including the experiences of drivers and operators. These experiences are reflected in the equipment which BOSCH offers today. Additional functions such as ASR (traction control) have been integrated. The paper provides an overview of the functions available today and their implementation. The paper concludes with a discussion on potential continued developments and an attempt to describe the systems which will be required by the mid 9os.
Technical Paper

ABS - Highly Flexible Modular System for Commercial Vehicles

1985-12-01
852326
This paper provides an overview of the different BOSCH Anti-Lock Braking Systems (ABS). Basically there are three types of ABS available providing a suitable design for the various types of single-axle and multiple-axle vehicles. A semitrailer for example can be equipped with a single-axle ABS, a truck, trailer or bus mostly with a 2-axle ABS and an articulated bus will be equipped with a 3-axle ABS. In order to comply with all requirements, and particularly to take into account the installation conditions imposed by the vehicle, BOSCH has 2 different types of pressure-modulation valve available, a single-channel and a dual-channel valve. With the different anti-lock systems discussed, BOSCH can equip the wide variety of vehicle types which range from volume-production vehicles to special-purpose vehicles.
Technical Paper

Traction Control (ASR) for Commercial Vehicles. A Further Step Towards Safety on our Roads

1987-11-01
872272
Alongside steering, accelerating and braking are the basic operations in the automobile which are nowadays still left to the driver to perform in their entirety. In performing these basic functions, it may come about that excessive demands are made upon a driver, these arising due to poor road conditions - rain, snow and ice - or as a result of suddenly changing traffic situations. With the introduction of anti-lock braking systems (ABS), a decisive step has been taken to increase active driving and traffic safety. The ABS prevents the lockup of the wheels during overbraking. The vehicle remains steerable and retains stable directional control. Furthermore, in many cases, a shorter braking distance is gained compared to braking with the wheels locked up. BOSCH has been manufacturing and supplying ABS for passenger cars since 1978 and for commercial vehicles and buses since 1981. ABS has proved to be an overwhelming success in practical usage.
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