Refine Your Search

Search Results

Viewing 1 to 6 of 6
Technical Paper

An approach to front collisions between passenger vehicles and commercial vehicles, with emphasis on front bumpers

1997-12-31
973078
Recent studies in the USA show 2800 passenger casualties/year, due to automobiles and light vehicles impacting against the front structure of medium and heavy trucks at speeds over 45 mph. This same driver or passenger leaves the vehicle and becomes a pedestrian. What is being done in the automotive industry to face this situation? What improvements can be expected in automobiles, trucks and buses in the XXI century? The results obtained in this work show that it is possible and very important for new projects and modernization of commercial vehicles (trucks and buses) to introduce a front bumper concept foreseeing the Passive Safety of third parties (passenger vehicles).
Technical Paper

Development of a test bench with temperature and relative humidity control, for interior lining materials of truck cabins

1997-12-31
973066
Due to the growing need to reduce the development time of new products, a tendency to rationalize field tests through test benches, in shorter times and with lower costs, has been noted in recent years. During the 90's, such a tendency has generated, in the automotive industry, a great effort to substitute classic field tests, which until recently represented 70% of the development work, for bench tests, with benches well “calibrated” in relation to the traditional methodology. The present work intends to show the development of a test bench to simulate solar radiation and relative humidity effects upon parts and interior lining materials of truck cabins. The traditional test was carried out exposing the cabin to weather conditions in predetermined locations, or in a hot-house, monitoring the cabin interior for temperature and relative humidity variations.
Technical Paper

International Project Brazil/Germany with High-Level Teamwork: Development of a New Cab Suspension for an European Medium Duty Truck

2013-10-07
2013-36-0418
New demands for the European Market claimed a new medium duty truck. Aim was not only to comply with new legislations, but also achieve better driving comfort and dynamic characteristics. The development of a new cab suspension was the answer given by means of an international project executed by the Technology Development Center of Mercedes-Benz do Brasil (CDT) with support of other technical divisions of our Development Center in Germany. High-level Teamwork Brazil/Germany at all levels from project coordination down to the plant assembly line was the key to reach an outstanding result with an extra achievement of weight reduction. Complete integration of all involved collaborators in Brazil and in Germany proved to be the main reason to get at the high efficiency shown during the development tasks. This article presents a brief overview of the undertaken development steps together with the challenges and the solutions given to assure the success of the international teamwork.
Technical Paper

Noise and Vibration Optimization Measurements in a Medium Duty Truck, Powered by a new High Power 4 – Cylinder Engine

1999-12-01
1999-01-3085
This work reports the first stage in the experimental optimization of a medium duty truck, equipped with a new engine, with four cylinders and high power, concerning both the noise emission for the environment and the noise level in the passengers' compartment. In the first stage of this work, comparative measurements among the noise levels for vehicles in different configurations were made, in order to identify the most important sources in the vehicle's noise level, as well as to serve as indicative for project improvements. Each system configuration was analyzed separately, in order to obtain a comparative evaluation of the different vehicle configurations along the whole period of measurements.
Technical Paper

Valuation and Study of Vibration Comfort: Commercial Prototype Vehicle of Medium Transport

1999-12-01
1999-01-3007
Nowadays, the cares with the vibration and the demands with the comfort of self-driven vehicles became basic requirements to the acceptance of a new truck market project more competitive and optimizing solutions that reduce the problems with vibration and comfort. Inside of those, an evaluation of commercial prototype vehicle of medium load will be presented in this work, searching to reduce a flaw still detected on test phase. Measures as change of shock cabin absorber, changes of tires, system of stabilizer bar at the back axis, changes of the front springs and use of linked shock absorber to the mount of the engine will be presented. Evaluations, which were done initially in the vehicle, the diagnosis was the movement happened due to resonance that includes the flexural of the frame, associated to the movement of pitch of the power train and of the cabin.
X