his paper investigates the influence of the rotor structure, more specifically, the influence of the open angle between the two magnet’s segments of each V-shape pole on the general characteristics of the machine keeping always the same magnets volume. In fact the investigation is done by using a free Finite Elements Methods (FEM) program coupled with another optimization program. This obtained...

The removal of the non-return valve from the refrigeration system with a twin screw compressor is realizable by fitting a non-reversing clutch to the prime mover to restrain the reverse rotation of the compressor following shut down. Utilizing a suite of computer programs developed by the authors, the influence of the non-return valve is examined; gas torques under normal running condition and ...

Engine speed limiters are safety devices to prevent the engine to exceed a predetermined high speed. The presented speed limiter is designed for large load variations which requires accurate and fast Air-Fuel ratio control. It is based on feedback linearization and on-line estimation of the load torque. Experimentations was done with a Sea-Doo r © watercraft powered by a Rotax r © four-stroke e...

This paper presents math-based torque converter modelling and simulation in both forward flow mode and reverse flow mode operations. Since, a torque converter plays an important role in transferring power from an engine shaft to the transmission shaft and vice versa and affects the fuel consumption and vehicle longitudinal dynamics, simulating the dynamic behaviour of this component in differen...

This paper describes a new approach towards a model-based optimization of internal combustion engine control maps. The goals of the optimization are – at the same time – minimum fuel consumption, low emissions and a good driveability. First the structure of a torque-oriented engine management system based on control maps is described. Then, an optimization environment is developed, which calcul...

Many games today are developed using game engines. This development approach supports various aspects of portability. For example games can be ported from one platform to another and assets can be imported into different engines. The portability aspect that still remains underdeveloped and requires further examination is the complexity involved in porting a ‘game’ between game engines. In this ...

Conducting psychophysiological experiments that measure how players experience digital games not only allows investigating the effects digital games have on players, it also gives game developers a tool to validate game design. In order to develop digital games rapidly that can be used as stimuli in psychophysiological experiments, a coherent and flexible development environment is required. A ...

It is possible to improve vehicle vibration by tuning the parameters of engine mounting system. By optimization of mount characteristics or finding the optimal position of mounts, vibration of the engine and transmitted force from the engine to the chassis can be reduced. This paper examines the optimization of 6-degree-of-freedom engine mounting system based on torque roll axis (TRA) mode deco...

in the present study, field oriented control of step motor implementation has been analyzed sothat it can make a sensorless control. efficiency and facilities of step motor is more than othertypes of electromotor. therefore, the numbers of mechanisms and different types of turning canbe made into them. also controlling these motors is easier than other available motors. steppingmotor has been d...