Increasingly complex air path concepts are investigated to achieve a substantial reduction in fuel consumption while improving the vehicle dynamics. One promising technology is the two-stage turbocharging for gasoline engines, where a high pressure and a low pressure turbocharger are placed in series. For exploiting the high potential, a control concept has to be developed that allows for coord...

In order to meet tight emission limits Diesel engines are nowadays equipped with additional hardware components like an exhaust gas recirculation valve and a variable geometry turbocharger. Conventional engine control units use two SISO control loops to regulate the exhaust gas recirculation valve and the variable geometry turbocharger, although their effects are highly coupled. Moreover, these...

Objectives in terms of pollutant emissions and fuel consumption reduction, as well as development costs and time to market reduction, has led car manufacturers to use more and more system simulation. However, among all the fields in which it has enabled to achieve these goals, the control development stage is one of those, in which major improvements can still be achieved. In this context and w...

Salah satu permesinan yang sangat vital dalam operasional kapal berlayar maupun bongkar muat yaitu Auxiliary Engine (Diesel engine generator). Fungsi mesin tersebut sebagai penggerak generator untuk menghasilkan listrik bagi kebutuhan di kapal. Diesel auxiliary memiliki komponen penting antara lain : pompa bahan bakar, turbocharger, air starting motor, intercooler, dan sebagainya. dari diesel a...

the present work is focused on the performance analysis of a 1.7 liter engine with turbocharger. the ultimate target is studying the response of the turbocharger to the inlet pulsating flow. such numerical analysis requires the time variation of pressure and velocity at turbine inlet. in order to achieve such information, one dimensional unsteady viscous compressible flow within a 1.7 liter tur...

A well-matched relationship between the compressor and turbine plays an important role in improving turbocharger engine performance. However, matching of engine, internal operation is not considered comprehensively. In order to fill this gap, paper proposed joint law (IJOL) method based on operating characteristics using a combination experimental simulation methods. On basis, optimization was ...

Variable geometry (VG) and wastegate mechanisms are commonplace within modern turbochargers and contain critical components without which the correct and efficient operation of a turbomachine would be affected. Such mechanisms rely upon components repeatedly and accurately moving against one another, even when subjected to extreme conditions such as high temperatures, a range of exhaust gas che...

turbocharging an engine boosts its power by increasing the amount of input air. this task is accomplished by using the exhaust gas to power a turbine which is engaged with a compressor. the variable geometry turbocharger, vgt is a unique turbocharger that the diffuser vane angle can be changed over a wide range of positions. the mathematics of turbomachinery flow analysis is intensive and uses ...