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Driver assistance systems have had increasing application to trucks and the Advanced Emergency Braking System (AEBS) is one of these systems that have a relevant contribution to safety. The target of the AEBS is to reduce the risk of accidents or help to minimize their consequences, through a strategy of sequential steps that start sending warning signals of the brake demand to the driver and end with the advanced total braking action, if the driver has not reacted to the warning signals sent. The objective of this paper will be show the influence of the some operational conditions of the vehicle, as speed and load, as well as the temperature of the brakes on the stopping distance by a truck with drum brakes during a brake request by the AEBS. The methodology will include a description of the concept and functioning of the AEBS and the tests carried out with a truck with drum brakes at several operating conditions described above during braking.

The growing necessity for less carbon emission vehicles due to environmental issues and more rigid legislation rules encourages many automotive companies to develop low CO2 emission engines. This motivation leads Mercedes-Benz do Brazil to the development of a “dual-fuel” diesel engine for buses that works with diesel and CNG (Compressed Natural Gas) fuel. One of the challenges for the development of this kind of engine is the electric/electronic integration between the diesel engine ECU (Electronic Control Units) and the CNG system ECU that coordinates the engine gas injectors.

This paper aims to analyze the advances in the area of Instrument Clusters for commercial vehicles. A historical of the evolution of the clusters through time and the main aspects of their improvements are presented. The old and new concepts of clusters are compared with focus on their reliability, friendly interface, flexibility and financial aspects. An example cluster, the INS2000, is explored as a representant of the Modern Clusters Concept. The impact of such cluster in the automotive industry is analyzed on the basis of its technical characteristics as well as experiences of the users.

The purpose of this paper is the presentation of the main experiences of customers and users of trucks and buses regarding the electronic systems placed in these vehicles, specially in the Latin American market. Basically, in the past years the number of on-board electronic devices increased a lot and the evolution of the customer know-how concerning the new technologies is in progress. Therefore, a line between the mechanical engine and the electronic vehicle management will be traced on this paper, considering the time the customers have taken to react regarding the applied innovations.

The objective of this paper is to present the update procedures and the future tendencies for the diagnosis projects in commercial vehicles, specially buses and trucks. The constant increase in the number of components and electronic systems in commercial vehicles demands that the subject “Diagnosis” be treated and previously defined, while the vehicle is in the project phase. The final goal of this thought is to provide to the vehicle the best possible acting of all the electronics systems placed in vehicle, and, as a consequence, the best running of the On-Board and Off-Board diagnosis systems which should assist the customer needs directly. The tendency is to project the vehicles of the same brand in the same conceptual line facilitating the assembly work in production line and the after sales support.

The objective of this paper is to present the update procedures and the future tendencies for the diagnosis projects in commercial vehicles, specially buses and trucks. The constant increase in the number of components and electronic systems in commercial vehicles demands that the subject “Diagnosis” be treated and previously defined, while the vehicle is in the project phase. The final goal of this thought is to provide to the vehicle the best possible acting of all the electronics systems placed in vehicle, and, as a consequence, the best running of the On-Board and Off-Board diagnosis systems which should assist the customer needs directly. The tendency is to project the vehicles of the same brand in the same conceptual line facilitating the assembly work in production line and the after sales support.