Abstract
In the global market of the 21st century the time-to-market reduction is an imperative statement for every automotive company. Automobile manufacturers must continue their efforts in order to exceed the customers’ expectations for improved quality during the engineering phase of new vehicles. Two available technological methods to meet that goal are simulation and bench testing. These enable advanced engineering and testing departments of the automotive industry to reduce development time and costs, identify weak spots of components or systems before volume parts are ever produced.
This paper presents an integrated approach described as object-oriented simulation and testing for vehicle driveline vibrations. It is also aimed to investigate transmission rattle, which is a well-known classical noise-vibration-harshness (NVH) phenomenon. It affects the vehicle ride and comfort resulting in customer satisfaction. The target of this combined analysis, simulation and testing, is to investigate the dynamic interaction of all driveline components by exciting them with the angular speed irregularities of a 4-cylinder diesel engine.
A new benefit with this approach is the ability for fine-tuning of the vehicle driveline. They also contribute to reduction of the time-to-market bottleneck during design and the development process. Also highlighting new methods to particularly research the transmission rattle phenomenon.
The application of the previously mentioned tools in a real vehicle rattling case is presented to show the potential of this approach.
