In this paper, we present a systematic design for gear shifting using a hybrid system approach. The longitudinal motion of the vehicle is regulated by a PI-controller that determines the required axle torque. The gear scheduling problem is modeled as a hybrid system and an optimization-based gear shifting strategy is introduced, which guarantees that the propulsion requirements are delivered wh...

Using finite element method and multi-body dynamics method, this study established an engine digitalized virtual prototype embraced tribological characteristics in virtual prototype and MATLAB platform, and introduced Elastohydrodynamics theory into the system, wrote program with difference equation method, and solved the Reynolds Equation through shafting-bearing self-feedback control system, ...

The California Department of Transportation uses Dowel Bar Retrofit (DBR) as a rehabilitation strategy for concrete pavements. Two test sections were dowel bar retrofitted and a third section was designated for control on US 101 near Ukiah, California. All three sections were subjected to accelerated pavement testing using the Heavy Vehicle Simulator (HVS). The HVS results demonstrated a large ...

The article presents the justification for necessity to use chassis dynamometers in tuning process of dual-fuel trucks. research system used and methodology are presented. results present approach solving problems related setting technical (physical) data tested vehicle on dynamometer, selection engine operation range, impact value forced load drive axle, dyno mode expected tasks correctness sc...

Acid fuels the motion of a threaded ring A central goal in the construction of molecular-scale machines is the efficient achievement of oneway motion. Erbas-Cakmak et al. developed a class of machines that transmit pH changes into the two-stage guided motion of molecular rings threaded on a linear or cyclic axle. The design relies on temporary blocking groups and landing sites along the axle th...

Currently, people pay more and attention to road maintenance, the traffic characteristics of vehicles play an important role in quality evolution maintenance decision, which commonly depends on collection analysis data. Nevertheless, rationality data scientificity decision are deficient. This study carries out a research fusion multisource including toll video surveillance First, information ve...

Abstract Decarbonisation of transport emissions is essential to meet climate targets. For road transport, currently available technologies are battery electric vehicles and hydrogen fuel cell vehicles. Battery more established than hydrogen; both could deliver the reduction required. However, considerably heavier equivalent vehicles, which in turn slightly internal combustion engine (ICE) vehic...

rutting in asphalt concrete is a very common form of distress in asphalt concrete pavement which unfortunately has been incurable to date. one of the prime reasons of rutting is attributed to the behaviour of asphalt binder at elevated temperature. this study has investigated the performance of polypropylene fibres modified asphalt concrete mix against rutting. two types of asphalt concrete sam...

in this study, stability control of a three-wheeled vehicle with two wheels on the front axle, a three-wheeled vehicle with two wheels on the rear axle, and a standard four-wheeled vehicle are compared. for vehicle dynamics control systems, the direct yaw moment control is considered as a suitable way of controlling the lateral motion of a vehicle during a severe driving maneuver. in accordance...

The dynamic component of bridge traffic loading is commonly taken into account with a Dynamic Amplification Factor (DAF)—the ratio between the and static load effects on bridge. In design codes, this factor generally more conservative than in reality. Recently new method calculation had been developed. Data from 15 different bridges have analysed since then paper presents results analyses. back...