نتایج جستجو برای: tire and brake wears
تعداد نتایج: 16829410 فیلتر نتایج به سال:
It is uncommon for tire explosion related injuries on the lower extremity. The bilateral lower extremities were injured by tire explosion when the patient was seated in a bus. She sustained an open fracture with partial bone loss in the right calcaneus (a comminuted fracture in the right ankle joint) and a closed comminuted fracture in the left tibia and fibula. This damage was caused by uncont...
Numerical Computation of Rolling Resistance Based on the Result of Tire/Road Static Contact Analysis
Among various dissipating mechanisms, the viscoelastic effect of rubber material on creation of rolling resistance is responsible for 10-33% dissipation of supplied power at the tire/road interaction surface. So, evaluating this kind of loss is very essential in any analysis concerned with improving the fuel consumption of vehicles and resultantly energy savage. Hysteretic loss is a fraction of...
This study applies nonlinear model predictive control (NMPC) to the torque-vectoring (TV) and front-to-total anti-roll moment distribution of a four-wheel-drive electric vehicle with in-wheel-motors, brake-by-wire system, active suspension actuators. The NMPC cost function formulation is based on energy efficiency criteria, strives minimize power losses caused by longitudinal lateral tire slips...
For the sake of high-efficiency energy recycling and brake security for series-parallel hybrid electric vehicle, an integrated brake system with an electric consuming brake subsystem and advanced strategy is proposed. The specific structure of electric consuming brake subsystem is introduced. The brake processes in different brake conditions are analyzed. A brake control strategy relying on the...
Thispaper applies extended Kalman–Bucyfiltering (EKBF)and Bayesianhypothesisselectionto estimate motion, tire forces, and road coefficientof friction (p) of vehicle8on asphalt surfaces.The EKBFestimatesthe state and tire forcesof an eight-degree-of-freedomvehiclefrom vehicle-mountedsensors.The filter requiresno a prioriknowledgeof p and does not require a tire force model. Resultingforce, slip,...
We are studying a hydraulic system design and vehicle dynamic modeling for a development of tire roller system, because those are very important in analysis of tire roller. Generally, tire roller is one of the useful machines in a road construction field and it technically applied for many other construction fields. Also, we conceptualize of new hydraulic and traction system, and define about t...
The behavior a pneumatic tire is analyzed and simulated using a finite element model. We calculate the elastic deformations in the contact area of a pneumatic tire touching the street for different friction conditions between tire and street. The simulations are compared with the experimental results. The comparison demonstrates that the overall deformation as well as the frictional behavior in...
The tests were carried out with the spark timing adjusted to the maximum brake torquetiming in various equivalence ratios and engine speeds for gasoline and natural gas operations. In thiswork, the lower heating value of gasoline is about 13.6% higher than that of natural gas. Based on theexperimental results, the natural gas operation causes an increase of about 6.2% brake special fuelconsumpt...
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