The performance of a marine dual-fuel engine, equipped with an innovative hybrid turbocharger producing electric power to satisfy part the ship’s load, is presented by simulation comparison traditional turbocharging technology. two distinct fuel types, combined turbocharger, involve substantial change in engine control modes, resulting more flexible and efficient management. Therefore, investig...

Engine downsizing allows automotive manufactures to achieve improved efficiency and reduce emissions. Turbocharging can increase the power density of the engine, and therefore plays a vital role in downsizing. Due to the nature of the reciprocating engine, a turbocharger turbine operates in a highly unsteady environment. This paper presents a computational investigation looking at the impact of...

Abstract: This paper is focused on the performance of centrifugal compressors for vehicle turbochargers operating at high altitude. The reasons for turbocharged diesel engine power loss increases and bad economy performance caused by exhaust gas energy utilization are investigated. The atmosphere’s impact on the turbocharger centrifugal compressor’s energy distribution characteristics under the...

In this paper, the influence of the gas exchange process on the diesel engine thermal overload is provided. Main components involved in the gas exchange process are discussed. The ambient conditions, the turbocharger performance, and the valve timing that affect the gas exchange process have been investigated. Experiments were conducted to simulate ambient conditions at different geographical l...

Synchronous Thermal Instability Evaluation of Medium Speed Turbocharger Rotor-Bearing Systems Brian R. Carroll Rotors in fluid-film bearing supported turbomachinery are known to develop elliptical orbits as a result of rotor-bearing interactions, mass unbalance within the rotor, gravitational bending of the shaft and external excitation. In synchronous whirl, where the speed at which the shaft ...

As a result of the analysis statistics on main failures turbocharger tractor engines in agricultural production, it can be concluded that is condition its bearing node, first place, determines performance entire turbocharger. This ultimately affects duration rotor after engine stops. The article considers method determining rotation time by inertia depending following factors: pressure drop gre...

Adapting turbocharger performance maps to a form suitable for dynamic simulations is challenging for the following reasons: (1) the amount of available data is typically limited, (2) data are typically not provided for the entire operating range of the compressor and turbine and (3) the performance data are non-linear. To overcome these challenges, curve fits are typically generated using the p...

A mean-value model of a diesel engine with a variable-geometry turbocharger (VGT) and exhaust gas recirculation (EGR) is developed, parameterized, and validated. The intended model applications are system analysis, simulation, and development of modelbased control systems. The goal is to construct a model that describes the gas flow dynamics including the dynamics in the manifold pressures, tur...

ABSTRAK Dunia otomotif di Indonesia semakin berkembang dengan pesat, jenis-jenis motor baru dari berbagai pabrikan bermunculan pesat. Salah satu jenis yang berteknologi cukup baik adalah YAMAHA V-IXION. Tipe ini memiliki teknologi dasar mobil yaitu injector bahan bakar dan ECU (Electronic Controller Unit) sebagai penerapan engine mapping. Untuk menambah tenaga motor, dilakukan pemasangan turboc...

There is a growing concern about the feasibility of new generation internal combustion engines in low-temperature and efficient way that can meet emission regulations while maintaining desirable power performance. This requires controllability flexibility over ignition reactivity within cylinder by handling two fuels with different chemical reaction intensity. In this research, controlled compr...