The first step in dealing with the behavior of an engine on NG mode is the installation of a suitable gas fueling system on the engine. Two generations of gas fueling systems which were studied and installed on research engine were Mixer type and Sequential system type. The results, including performance, emissions and fuel consumption, were recorded and analyzed. The results showed that the...

Use of liquefied petroleum gas (LPG) in compression-ignition (C-I) engines has always been considered important in the diesel engineering field. This is due to its easy accessibility and good combustion characteristics. In this paper the application of LPG fuel along with diesel oil in a direct- injection automotive diesel engine is experimentally investigated. In order to convert the pure dies...

This paper presents an engine-in-the-loop validation of a power management strategy for hybrid electric powertrains that splits the power demanded by driver between the engine and battery depending on the frequency content. In particular, a series hybrid electric powertrain is considered where the engine is a real 6.4L diesel engine and the rest of the vehicle, including the battery, generator,...

Engine testing involves measurement of rotating speed and torque of the engine by applying load controlled by a dynamometer connected to its output shaft. HORIBA has developed various types of dynamometer for the purpose of engine testing. They are mainly classifi ed into two types; one is absorbing only dynamometer such as hydraulic dynamometers and eddy-current dynamometers, the other is abso...

For the four processes of aero engine health management, which are composed of condition monitoring, diagnostics, prognostics and prescriptive action, a four-layer architecture of aero engine health management divided into data layer, transaction layer, decision layer and users layer, is designed based on multi-agent. Corresponding to the function of each layer, six agent roles are defined, suc...

Based on the analysis of limitation of existing workflow management system, a workflow management system based on micro kernel is researched and designed. In this system, a micro kernel based workflow engine is designed by separating the service implementation and activity scheduling; the workflow engine interface is defined to connect the related workflow components seamlessly; and then graphi...

The hybrid-power gas engine-driven heat pump (HPGHP) combines hybrid power technology with a gas engine heat pump. The engine in the power system is capable of operating constantly with high thermal efficiency and low emissions during different operating modes. In this paper, the mathematical models of various components is established, including the engine thermal efficiency map and the motor ...

† Part of this work was done at AIFB (University of Karlsruhe, Germany) and LSDIS (Univeristy of Georgia, USA) during a sabbatical leave. Abstract Traditionally, workflow management systems are used to support static processes, i.e., processes which do not change frequently. This has limited the scope of workflow management. Moreover, the networked economy of the new millennium requires workflo...

In this paper, Front Engine Accessory Drive (FEAD) system of automotive engine is modeled with ADAMS software. The model is validated using engine test data. It is then used to investigate the effect of design parameters on the system performance such as belt vibration and loads on the idlers. Three alternative layouts were developed in order to improve the performance of original EEAD system. ...

In this study, an integrated energy management strategy(IEMS) was proposed for a PHEV(Plug-in hybrid electric vehicle). The IEMS controls the engine on-off considering not only powertrain system(battery SOC, vehicle speed, accelerator pedal, brake pedal) but also thermal system condition such as cabin temperature. Analysis of the integrated powertrain and thermal system was conducted to enhance...