The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
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 number of Diesel powered cars has increased in the last decade, which leaded to the intensifying of air pollution, especially inside big cities, mostly due to NOx emissions. Instead of banning these engines, an alternative is to develop a smart Power Management Control (PMC), suitable for Plug-In Hybrid Electric Vehicles (PHEVs), as this paper proposes, where a small displacement Diesel engine...
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...
Performance of the fast-response solenoid actuator in the engine fuel systems is characterized with a response time of less than 0.1 ms and the necessity to take into consideration the non-stationary peculiarities of mechanical, hydraulic, electrical and magnetic processes. To do this, simple models are used for magnetizing within the static and dynamic hysteresis, non-stationary electrical processes...
A mathematical simulation has been performed to investigate the energetic, combustion and environmental behavior of a mono cylinder, water cooled, four stroke DI diesel engine fuelled with diesel, diesel-ethanol (15% by volume) and diesel-methanol (15% by volume) blends. The results show that alcohol blending to diesel reduces the emissions of NOx, smoke opacity, specific PM and specific CO2. From...
In this paper, presents analyzed an economics for energy cost reduction with an assessment of possibility potential and increases energy efficiency, in using renewable energy from biogas fuels of the agricultural produce, such as oil palm fiber, rice husk and scraps of rubber tree, and from the animals dung within the community area for case study the community village Non-Ka, amphor Si Bun Rueang,...
Nowadays the studies of diesel generators are limited to present mechanical dynamic of the process or the electrical one, this is due to the complexity and the high no linearity of the DG. This paper gives a revue of different model which can describe the total dynamic process of the diesel generator. Then a developed model is proposed to study the interaction between the mechanical and electrical...
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,...
The fluid motion in an internal combustion engine is induced during the induction process and later modified during the compression process. There are various methods to improve the efficiency of engine such as super charging, turbo charging, varying stroke length, varying injection pressure, fuel to air ratio, additional strokes per cycle and so on. Many of them require additional design (stroke...
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...
In this paper, a case study has been performed and analysed on a Narrow boat as practical application of Micro CHP. The Narrow boat system comprises a diesel engine and various other ancillary equipment. The engine was tested using a standard test procedure and the corresponding engine torque and power, thermal efficiency, fuel input energy and fuel consumption figures were obtained for the range...
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 development of motorisation involves using bigger amounts of fuels. These fuels are, until now, mainly petroleum. However, the fuels of bio origin must be used as well. It follows from the necessity of ensuring CO2 balance and from the fact that oil sources sooner or later will become exploited. Not less important is the fact that, principally, it is difficult to change the proportions of petrol...
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...
In the paper resources save control of hybrid power system is presented. Conditions for minimizing fuel consumption and maximize profit are obtained. Method for reducing torque ripple of the synchronous generator, which reduces energy loss and increase stability are proposed.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.