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Rejuvenation and updating of a power generation technology is to make it more efficient, more reliable, and more environmentally friendly. Those conditions encourage the rejuvenation of Pesanggaran Bali power plant. Currently the power plant uses a diesel engine which emit a 978,448 ton of CO2 annually. The plan is to replace the diesel engine with gas engine with capacity of200 MW to generate electricity...
The diesel engine is a typical multi-input multi-output system with strong couplings, actuator constraints, and fast dynamics. The objective is to operate the engine to meet driver's speed demand and reduce exhaust emissions of nitrogen oxides (NOx) during transient process. Interactions between the actuators and nonlinear behavior of the system make the problem difficult to handle using classical...
In this paper, optimization problem of after treatment system is investigated for diesel engines with lean NOx trap (LNT). First, a control-oriented LNT model is developed based on energy and mass balancing rules. Then, the optimization problem is formulated as a dynamic programming (DP) problem under developed dynamical model constraint and a trade-off between fuel economy and NOx emission is considered...
The fear of fuel depletion necessities the integration of energy saving methodologies for electric power generation. Diesel engines are common for back-up/standby electric power generation units. Being compression-ignition based, in contrary to gasoline engines, the enrichment of the air intake of diesel engines with Hydrogen improves the fuel burning process, leading to better fuel consumption. Wet/dry...
We are developing a range extended electric vehicle using a diesel engine electric generator with plant (vegetable) oil (named as bio EV). The vehicle design concept is a series hybrid electric vehicle. A diesel engine rotates a DC motor by using plant oil to generate electricity, and the developed vehicle runs by using the generated electricity. It is possible to run a long distance without refueling,...
Usually electric tugboats are equipped with diesel engine based electric generator for power production, battery for supplying power to auxiliary loads and electric motors for propulsion. This paper proposes control strategies for diesel engine and electric generators used in electric tugboat to improve energy efficiency of the system. Doubly fed induction machine (DFIM), asynchronous in nature, is...
The general objective of the research is analyzes of the preheated gas oil-animal fat blends use at the experimental diesel engine, type CFR- IT9-3M, adequate instrumentation. The engine was fuelled firstly with diesel fuel then with different diesel fuel-animal fats blends (5%, 10%, 15% animal fats content in mixture with diesel fuel). The main animal fat advantages - cetane number and calorific...
Energy efficiency plays an important role to the CO2 emissions reduction, combating climate change and improving the competitiveness of the economy. The problem presented here is related to the use of stand-alone diesel gen-sets and its high specific fuel consumptions when operates at low loads. The variable speed gen-set concept is explained as an energy-saving solution to improve this system efficiency...
A lot of methods exist for the diagnostics of synchronous generators and diesel engine installations. One of these methods is the diagnostics with the help of currents and voltages spectrum analysis. The spectral composition of the output currents and voltages is influenced by technical condition of the synchronous generator — wear of bearing units, short-circuit of some turns of windings, etc. Such...
The fuel efficiency and exhaust emissions are main drivers for the development of diesel engine control technology. Some of the most important challenges in transient control of diesel engine are the reduction of NOx (nitrogen oxides), soot emissions and BSFC (brake specific fuel consumption, increase of fuel efficiency) simultaneously during rapid engine speed changes. In this paper we propose a...
The start process of multi-cylinder diesel engine has been experimental investigated in this paper. With a fixed injection duration, the start experiment is performed with different injection timing. Then, with a fixed injection timing, the experiment of the starting moment is performed with different injection duration. Based on the above experiment data and the calculation method, the matching strategy...
This work deals with the problem of observer-based controller for diesel engines. The control objective is to regulate the intake and exhaust manifold pressures and the compressor power in a four-cylinder diesel engine in order to obtain low emissions and low fuel consumption. The considered mean value model of the air path system is rewritten as a nonlinear system with varying parameters. The proposed...
The fault diagnosis of mechanical system has become research focus recent years. General procedure of fault diagnosis includes monitoring working condition, collecting noise and fault signal, procuring typical fault sample characteristics, and making decision. However, it is hard to select suitable signal and acquire eigenvalue. Vibration intensity is a typical and effective eigenvalue in vibration...
The impact of oxygen enrichment of the inlet air have been examined in laboratory tests on a direct injection diesel engines to study the combustion efficiency, power and performance of the engine. Increasing the oxygen content with the air leads to faster burn rates and also the ability to burn more fuel at the same stoichiometry. Added pure oxygen in the combustion air also leads to shorter ignition...
The application of Selective Catalytic Reduction (SCR) in Automobiles makes the system complex, while trying to meet the stringent Emission norms, especially in mobile heavy-duty diesel applications. As EURO VI emission standards are on the line, these strict specifications and the dynamic behavior of automobiles demands advanced control system design. Such a control system design requires a model...
The paper based on the diesel CA6DL2–35E3 of FAW R&DC with turbocharger, intercooler, four-valve, six-cylinder and high pressure common rail, the diesel displacement is 8.6L. We had established model of the diesel with GT-power and simulated diesel engine working process under transient operating conditions which in constant speed while torque increased. We investigated and analyzed condition...
With the strict implementation of the emissions regulations, the electronic control of diesel fuel injection system is the development trend for diesel engine in the future. Diesel Electronic Unit Pump (EUP) enjoys the advantages of digital control of fuel charge and injection pulse width and also reliability in operation, thus has a strong value in the field of high-power diesel engine. In this paper,...
In order to make full use of the air in the chamber, improve the mixing process, reduce raw emission and fuel consumption of diesel engine, a novel combustion system, the Side Swirl Combustion System (SSCS), was proposed in the present paper. The effects of the distance between the flange and the nozzle (DBFN), a crucial parameter to the designing of SSCS, on the performance of the diesel with SSCS...
This paper investigates the piston motion control strategies of a single piston hydraulic free-piston diesel engine, which is intended to be a power supply for hydraulic propulsion systems. The Cycle fuel mass is determined by engine displacement and load. A closed loop control method is used in fuel injection timing control strategy to make the position of bottom dead center steady possibly. In each...
Using the excess heat of exhaust gas to heat the water to vapor, by spraying the vapor into intake manifold to join combustion, the performance of vehicle diesel engine has been researChed. The experimental results demonstrate that the bsfc of experimental engine cannot be reduced markedly, the temperature of exhaust gas for experimental engine is lower than that of original engine, the torsion of...
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