Wheel braking devices is some of the most widely used landing deceleration in modern aircraft. Jet pipe pressure servo valves are large aircraft wheel brake control systems because their high anti-pollution ability, sensitivity and fast dynamic response. However, suffer vibration phenomena during process. The valve an important part hydraulic system, also factor affecting system. In order to so...

In this study, a quasi-realistic thermodynamic analysis was performed to investigate the effects of design and operating parameters on performance single-cylinder modern Atkinson cycle engine. Fortran used for all calculations. It assumed that fuel-air mixture as working fluid, iso-octane fuel. The Wiebe function combustion process it specific heat fluid varies with temperature. calculations, t...

The paper proposes a method to characterize the dynamic behavior of a normal production hydraulic brake system through experiments on a hardware-in-the-loop (HIL) test bench for both modeling (Part I) and control (Part II) tasks. The activity is relative to analyze, model and control ABS/ESC digital valves, aiming at obtaining reference tracking and disturbance-rejection performance similar to ...

Due to the poor conditions of wet brake cooling and the high temperature of the working characteristics, this paper intended to introduce the oil film vadose between the brake linings, considered the variation of volume of grooves on the friction plate, and then proposes the three-dimensional transient dynamic response of fluid-solid coupling mathematical model. By parameter analysis of the dis...

There have been numerous studies in understanding driver behavior for purpose of understanding contributing factors to high accident rates. Driving abnormalities could be one of the many factors affecting accidents and if it can be detected this will help prevent accidents. In this paper we present simple and effective methods for an in-car data acquisition in collecting real time driving data....

Brake Analysis and NVH (Noise, Vibration and Harshness) Optimization have become critically important areas of application in the Automotive Industry. Brake Noise and Vibration costs approximately $1Billion/year in warranty work in Detroit alone. NVH optimization is now increasingly being used to predict the vehicle tactile and acoustic responses in relation to the established targets for desig...

Increasing demand from the consumer for higher levels of refinement from their passenger vehicles has put considerable pressure on the automotive industry to produce ever quieter cars. In order to prevent the occurrence of many forms of brake noise, especially judder and drone, excessive heating of the brake disc must be avoided, while minimizing temperature variations across the rotor. In orde...

The purpose of this work is to present a study of the thermomechanical behavior of the automotive disc brake during the braking phase. The first analysis is performed on the disc-pad model without the presence of thermal properties. Structural performance of the disc-pad model such as deformation and Von-Mises stress is predicted. The case of thermoelasticity on the same model with the inclusio...

The integrated braking control system (IBC) has become one of the most popular brake-by-wire (BBW) solutions due to its compactness and versatility. Accurate monitoring wheel cylinder pressure in real time is basis for brake control, estimation a low-cost reliable method. However, IBC an electromechanical hydraulic coupling that significant nonlinear behaviors; moreover, vehicle dynamics also h...