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Abstract
This paper deals with application of virtual prototype to the heavy-duty vehicles gearbox concept. Used methodology was developed and validated on the single stage gearbox concept. Afterwards the virtual prototype was applied to complex gearbox and extended for gear shift. Gear shift has a significant influence on comfort of vehicle and also for its lifetime. The gear shift process has to be fast and smooth as much as possible, which is very difficult. This paper deals with using virtual prototype to see the effect of different gear shift process on the vibration of gearbox. The validation by the experimental approach of gearshift has not been performed yet.
Highlights
Due to increasing interest of environment, the hybrid and electric vehicles are developed much faster, cars with standard combustion engine
The finite element method (FEM) was used to get input data for the parametrical open code, which was written in software ADAMS
The sensitivity study on input parameters were performed on the virtual prototype of single stage gearbox [2]
Summary
Due to increasing interest of environment, the hybrid and electric vehicles are developed much faster, cars with standard combustion engine. The electric vehicles are considerably different hybrid and vehicles with combustion engine. The automatic transmissions for hybrid and cars with combustion engine have been developed for years. The gearshift is performed fast and precisely. With increasing number of cars, the transmissions manufacturers are focused on further optimization during process of gears shift and for the optimization of using materials for whole transmission with respecting limits of noise and vibration. The decreasing weight positively affect the car consumption, which is one of the key parameters for customer. On the other side the reducing of gearbox wall thickness can significantly increase vibration and emitted noise, which negatively affects the passenger comfort
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