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Hydraulic power steering systems, which can provide large steering assist force, are widely used for heavy-duty commercial vehicles to enhance the driving comfort. Such systems have great influences on vehicle controllability, steering stability and safety. However, interpolated table from experiment data was used as the assist force to study the vehicle dynamics in many previous works, so the transient...
Heat exchanger is widely used in the vehicle cooling system and its performance influences the vehicle dynamic performance significantly. In present paper, an object-oriented louver fin-and-tube heat exchanger model was developed to simulate the dynamic outlet temperature of air and coolant. A two-dimensional discrete strategy, which divided the heat exchanger into macro control volumes on both air...
Clutch actuation systems are complex systems where hydraulic, pneumatic, mechanical and electrical components are coupled. Such systems have grate influence on vehicle performance. This paper presents a detailed clutch actuation model composed of components from multi-domains like mechanical and pneumatic actuation system, hydraulic boosting system, etc. Various components and subsystem models, such...
A new modeling and simulation methodology for a pneumatic brake system with ABS widely used in commercial vehicle is presented. The main parts of the pneumatic brake system such as air storage reservoir, tandem dual circuit brake valve, relay valve, ABS air regulating valve and diaphragm brake chamber are included and modeled by an object oriented implementation of the multi-domain unified modeling...
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