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Model Assisted Survey Sampling
77,99 € *
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The book covers the various approaches to modeling the in-cylinder processes such as mixture formation, combustion and formation of exhaust emissions in diesel and gasoline engines. Due to their complexity emphasis is put on multi-dimensional spray, combustion and emission formation models. However, phenomenological as well as zero-dimensional thermodynamic models, which are still widely used in engine development because of their computational efficiency, are addressed as well. Example calculations of each model type are compared with corresponding experimental data ¿ represented in diagrams as well as in images resulting from modern optical measuring techniques ¿ in order to discuss the capabilities of today's simulation models as well as the shortcomings that still exist either because of oversimplifying assumptions or because of insufficient knowledge of the real processes. The reader will be provided with an overview of the most important simulation models describing the in-cylinder processes of internal combustion engines. In addition, suggestions are made about which modeling approach is appropriate for a specific type of problem.Now available in paperback, this book provides a comprehensive account of survey sampling theory and methodology suitable for students and researchers across a variety of disciplines. It shows how statistical modeling is a vital component of the sampling process and in the choice of estimation technique. The first textbook that systematically extends traditional sampling theory with the aid of a modern model assisted outlook. Covers classical topics as well as areas where significant new developments have taken place.

Anbieter: buecher
Stand: 03.04.2020
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Solar Based Vehicle Charging Station at Tribhuv...
54,90 € *
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In earlier days in Kathmandu, the vehicles were in limited numbers. There were very old vehicles which was not emission free. Vehicles like Volkswagen Bettle, Volkswagen Camper, Bajaj Tempo and other were in use at that time. But now the automobile market in Nepal is increasing quickly. There are lots of vehicles in the streets of Kathmandu. This increased number of diesel and petrol vehicle has raised a major problem including congested roads, traffic jams, road accidents, air pollution and so on. These kinds of problems can be reduced by use of zero emission vehicles.

Anbieter: Dodax
Stand: 03.04.2020
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Modeling and Control of Raw Emissions of a Dies...
48,80 € *
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A real-time capable in-cylinder pressure based diesel engine-out PM estimator has been developed. Using the ECU signals and in-cylinder pressure data new variables have been derived and used as inputs for an exponential zero dimensional modeling approach. This approach required little computational effort making the ECU capable of cycle based PM emissions calculation, significantly faster than in real-time. Along with the PM estimator an accurate NOx emissions model has been utilized in a MIMO feedback controller motivated by the gain scheduling concept. Two types of experimental passenger car DI diesel engines, equipped with in-cylinder pressure sensors have been used. Measurements have been taken during steady state and transient operation on engine test benches for development work. Implementation of the emission models and the controller has been done on a test vehicle and tests were carried out on the test track and vehicle test bench. Good correlation between the estimated and measured PM has been achieved for various experiments, not only at steady state operation but also for transient states. Particularly, the model delivers good qualitative results in general, as well as good quantitative results in some regions. PM emission gradients between operating points are represented successfully. The raw emissions controller – despite further need for optimization – has been successful in controlling PM and NOx emissions simultaneously over EGR and pilot injection quantity. Gain scheduling has eliminated the need for an inverse combustion model. EGR and injector actuators were manipulated in a cascaded controller structure where the designed PI controllers altered reference values of the actual EGR and pilot injection quantity controllers that were already present in the system.

Anbieter: Dodax
Stand: 03.04.2020
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Hydrogen and diesel combustion
49,00 € *
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The important motivations for exploring alternative fuel resources are energy security and air pollution, problems that are collectively calling into question the fundamental sustainability of the current energy system.Hydrogen-fuelled engines with near-zero emissions are a potential near-term option and a bridge to hydrogen fuel cell vehicles.With emission legislations getting more stringent,research studies have definitely established the advantages of extremely clean burning characteristics of hydrogen as a dual fuel in engines.But that said,the premium of using hydrogen as a green energy carrier needs to be augmented with studies on its potential to satisfy conventional engine combustion characteristics for ready deployment.In this present study, the performance and combustion analysis were carried out on an existing direct injection diesel engine at various load steppings using hydrogen inducted at different injection timings and injection durations.The findings of the study cater to its audience interested to employ such uses in practical diesel engines and also to those chartering a course of pursuance in the context of reducing emission from existing combustion engines.

Anbieter: Dodax
Stand: 03.04.2020
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Implementation of a Green Bus- Powered by Solar...
35,90 € *
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In this modern era, people have become such dependent on motorized transportation that they want to have their private mode of transport for the convenience of their frequent movement. From a recent statistics it is found that currently almost 2.7 million vehicles are running alone on the roads of Bangladesh and approximately 2.4 million are the type of vehicle which is used for personal means. Because of the huge number of vehicles on the road, the fuel consumption is very high and except gas, most of other fuels (octane, petrol, diesel etc.) are imported from abroad. Bangladesh an import-dependent country, with this high demand of fuel, is so now counting loss. Furthermore burning of these fuels causes a huge amount of carbon dioxide (CO2) emission that results greenhouse effect.In this project, the idea of a green bus system is proposed which can be a remarkable aid to the recent traffic condition. In this regard a prototype of green bus system is implemented where resources such as wind, solar and piezo-electric generator are employed. All the resources being used in this project are abundantly available and also emit zero CO2.

Anbieter: Dodax
Stand: 03.04.2020
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Solar Based Vehicle Charging Station at Tribhuv...
88,90 CHF *
ggf. zzgl. Versand

In earlier days in Kathmandu, the vehicles were in limited numbers. There were very old vehicles which was not emission free. Vehicles like Volkswagen Bettle, Volkswagen Camper, Bajaj Tempo and other were in use at that time. But now the automobile market in Nepal is increasing quickly. There are lots of vehicles in the streets of Kathmandu. This increased number of diesel and petrol vehicle has raised a major problem including congested roads, traffic jams, road accidents, air pollution and so on. These kinds of problems can be reduced by use of zero emission vehicles.

Anbieter: Orell Fuessli CH
Stand: 03.04.2020
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Solar Based Vehicle Charging Station at Tribhuv...
48,99 € *
ggf. zzgl. Versand

In earlier days in Kathmandu, the vehicles were in limited numbers. There were very old vehicles which was not emission free. Vehicles like Volkswagen Bettle, Volkswagen Camper, Bajaj Tempo and other were in use at that time. But now the automobile market in Nepal is increasing quickly. There are lots of vehicles in the streets of Kathmandu. This increased number of diesel and petrol vehicle has raised a major problem including congested roads, traffic jams, road accidents, air pollution and so on. These kinds of problems can be reduced by use of zero emission vehicles.

Anbieter: Thalia AT
Stand: 03.04.2020
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