in this study a heat exchanger is designed for cooling exhaust gas and an experiment is carried out to investigate the effect of exhaust gas recirculation (egr) temperature on destruction of the fuel’s availability due to combustion processes in idi diesel engine cylinder. to serve this aim an exergy analysis is conducted on the engine cylinder which provides all the availability terms by which...

Proposed crewed and robotic exploration activities demand that high-performance, cryogenically fueled, in-space stages perform high delta-V missions that range from days to months in duration. In 2011 ULA presented a concept for the integration of in-space tank pressurization/vent, power-generation, attitude control and vehicle propellant settling functions into a single system based on the uti...

Abstract: The main purposes of Present Automobiles are being developed by more of electrical parts for efficient operation. Generally a vehicle was built with an analogue driver-vehicle interface for indicating various vehicle statuses like speed, fuel level, Engine temperature etc., This paper presents the development and implementation of a digital driving system for a semi-autonomous vehicle...

One of main NVH (Noise, Vibration and Harshness) deliverables for Chrysler Development System (CDS) is a fully correlated finite element model to be used for the referencing and the target setting process for the future program. To satisfy CDS requirements, a comprehensive feasibility study using the finite element modeling techniques along with the experimental methods to validate the CAE (Com...

Hybrid electric vehicles are seen as a solution to improving fuel economy and reducing pollution emissions from automobiles. By recovering kinetic energy during braking and optimizing the engine operation to reduce fuel consumption and emissions, a hybrid vehicle can outperform a traditional vehicle. In designing a hybrid vehicle, the task of finding optimal component sizes and an appropriate c...

Commercial transportation fuels are complex mixtures containing hundreds or thousands of chemical components, whose composition has evolved considerably during the past 100 years. In conjunction with concurrent engine advancements, automotive fuel composition has been fine-tuned to balance efficiency and power demands while minimizing emissions. Pollutant emissions from internal combustion engi...

To improve the drivability and reduce fuel consumption and emissions of an existing sport utility vehicle (SUV), simulation-based vehicle refinement was conducted in this study. A simulation model of the SUV was first established and validated. Both simulation and test results confirm that due to low reserve power both at low and high speed bands, the drivability, fuel economy and emissions of ...

In this paper a smooth control algorithm for gear shifting is proposed for improving longitudinal dynamic performance during dry dual-clutch engagements while shifting up or down takes place based on measurements of engine speed and clutch speed, and on estimation of the dual-clutch engaging torque. Simulation effort is made by Matlab/Simulink for transient responses of the overall propulsion s...

In the automotive industry, electromagnetic variable reluctance (VR) sensors have been extensively used to measure engine position and speed through a toothed wheel mounted on the crankshaft. In this work, an application that already uses the VR sensing unit for engine and/or transmission has been chosen to infer, this time, the indirect position of the electric machine in a parallel Hybrid Ele...

Fuzzy logic is a rule based system which is implemented using if then rules. For example two parameters say x & y are varied in order to know which parameter effects the fuel efficiency. This paper explores in particular the use of fuzzy logic in the Efficient estimation of fuel consumption. We present an intelligent Engine Control Unit (ECU) that controls a series of actuators on an internal c...