|
|
Study of torque vectoring clutch design
Cupák, Václav ; Porteš, Petr (referee) ; Fojtášek, Jan (advisor)
This work deals with the design of right and left torque vectoring control used in heavy commercial vehicle powertrains. The beginning of the work is focused on the description of the active differential system and on the clutches used in the automotive industry. Then the basic parameters of the experimental vehicle are defined and the choice of the clutch conception is made. Subsequently, calculations of geometric parameters of clutches and verification of their heat capacity is made. Conceptual design of the control mechanism is discussed in the last chapter. The aim of the work is the draft of the possible type of control mechanism for the given system with the possibility to use the information obtained for the further development of this system.
|
|
| |
|
|
Car differentials
Čapek, Štěpán ; Ramík, Pavel (referee) ; Kaplan, Zdeněk (advisor)
Technical solutions of car differentials. Description of the vehicle transmission system and types of differentials with their evaluation. Following active systems and active differentials with explanation of their function and summary of advantages and disadvantages of their application and use by individual car manufacturers.
|
|
|
Torque Vectoring Differentials for Heavy Commercial Vehicles
Fojtášek, Jan ; Magdolen,, Ľuboš (referee) ; Tůma, Jiří (referee) ; Porteš, Petr (advisor)
This work deals with the assessment of the yaw moment control via active differential effects to the heavy commercial vehicle dynamics. Summarized are the findings about design of active differential, control algorithms and theoretical assumptions about overall effects to the vehicle dynamics. According to the described theory the own concept of the active differential for experimental heavy commercial vehicle is proposed. The main part of the work is focused on the effects of the active differential on vehicle manoeuvrability, controllability, stability and limits analysis. For this purpose, multibody dynamic model of the complete vehicle with standard open differential is assembled and results of the selected manoeuvre simulations validated by measurements of the real vehicle characteristics. The validated vehicle model is then extended by the model of the active differential with control algorithm. According to the simulations results the theoretical presumptions are confirmed and the effects of the active differential on vehicle dynamics in steady and transition states are evaluated. Based on the described findings the overall improvement of the vehicle dynamics by this technology, feasibility of the proposed concept and main advantages and disadvantages are evaluated.
|
|
|
Locking differential
Odložilík, Daniel ; Nedoma, Jiří (referee) ; Kaplan, Zdeněk (advisor)
The aim of the bachelor thesis is to create research and general evaluation of basic types of locking differentials. Bachelor thesis is divided into four chapters. The first chapter focuses on the design of final drive cases and types of final drives, which are closely related to the differentials. The following second chapter deals with the historical and theoretical basis of differentials. The following third chapter deals with deeper problems of locking differentials, especially description of individual types of locking differentials, including their evaluation. Last fourth chapter is (then) focused on the automotive systems themselves, which use (and improve) the function of open differentials or locking differentials.
|
|
|
Study of vehicle torque vectoring
Hlaváč, Pavel ; Fojtášek, Jan (referee) ; Míša, Jiří (advisor)
This bachelor thesis deals with torque vectoring. This topic has become interesting in recent years, as there is a rapid development of electromobility. Torque vectoring system can be integrated into electric vehicles with ease because there can be two motors on one axle. In this thesis, various types of drives and drivetrains are described, differentials are also covered in detail. Vehicle dynamics is also described. After the vehicle dynamics, the very benefit of torque vectoring is discussed. Finally, sensors and programs that could be used to design and simulate the system are briefly mentioned.
|
|
|
Study of vehicle torque vectoring
Hlaváč, Pavel ; Fojtášek, Jan (referee) ; Míša, Jiří (advisor)
This bachelor thesis deals with torque vectoring. This topic has become interesting in recent years, as there is a rapid development of electromobility. Torque vectoring system can be integrated into electric vehicles with ease because there can be two motors on one axle. In this thesis, various types of drives and drivetrains are described, differentials are also covered in detail. Vehicle dynamics is also described. After the vehicle dynamics, the very benefit of torque vectoring is discussed. Finally, sensors and programs that could be used to design and simulate the system are briefly mentioned.
|
|
|
Car differentials
Čapek, Štěpán ; Ramík, Pavel (referee) ; Kaplan, Zdeněk (advisor)
Technical solutions of car differentials. Description of the vehicle transmission system and types of differentials with their evaluation. Following active systems and active differentials with explanation of their function and summary of advantages and disadvantages of their application and use by individual car manufacturers.
|
|
| |
|
|
Torque Vectoring Differentials for Heavy Commercial Vehicles
Fojtášek, Jan ; Magdolen,, Ľuboš (referee) ; Tůma, Jiří (referee) ; Porteš, Petr (advisor)
This work deals with the assessment of the yaw moment control via active differential effects to the heavy commercial vehicle dynamics. Summarized are the findings about design of active differential, control algorithms and theoretical assumptions about overall effects to the vehicle dynamics. According to the described theory the own concept of the active differential for experimental heavy commercial vehicle is proposed. The main part of the work is focused on the effects of the active differential on vehicle manoeuvrability, controllability, stability and limits analysis. For this purpose, multibody dynamic model of the complete vehicle with standard open differential is assembled and results of the selected manoeuvre simulations validated by measurements of the real vehicle characteristics. The validated vehicle model is then extended by the model of the active differential with control algorithm. According to the simulations results the theoretical presumptions are confirmed and the effects of the active differential on vehicle dynamics in steady and transition states are evaluated. Based on the described findings the overall improvement of the vehicle dynamics by this technology, feasibility of the proposed concept and main advantages and disadvantages are evaluated.
|
guest ::
