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Training / Education
2014-11-07
The improved efficiencies of the modern diesel engine have led to its increased use within the mobility industry. The vast majority of these diesel engines employ a high-pressure common rail fuel injection system to increase the engine's fuel-saving potential, emissions reduction, and overall performance. This one-day seminar will begin with a review of the basic principles of diesel engines and fuel injection systems. Diesel and alternative fuels will be discussed, followed by current and emerging diesel engine applications. The majority of the day will be dedicated to the common rail system itself, beginning with a comprehensive overview of the complete system. The instructor will then introduce the main subsystems, including hydraulics and controls. Finally, the subsystems will then be broken-down into their respective components.
Training / Education
2014-09-29
Engines can and do experience failures in the field in a variety of equipment, vehicles, and applications. On occasion, a single vehicle type or equipment family will even experience multiple engine failures leading to the inevitable need to determine what the most likely cause of one or all of those failures was. This comprehensive seminar introduces participants to the methods and techniques used to determine the most likely cause of an individual engine or group of engine failures in the field. The seminar begins with a review of engine design architecture and operating cycles, integration of the engine into the vehicle itself, and finally customer duty cycles and operating environments. Special emphasis is placed on the number and type of subsystems that not only exist within the engine (diesel and gasoline) but are used to integrate the engine into the overall vehicle package. Following this review, participants learn about failure types, investigation techniques, inspection methods, and how to analyze the available evidence using their own knowledge of engine and vehicle operating characteristics to determine the most likely cause of an engine(s) failure.
Event
2014-09-18
Event
2014-09-18
The current Stage IV/Tier4f limits for engine emissions of construction machines is enforcing an even more stringent use of after treatment system as seen already during Stage IIIB/Tier4i emission limits introduction. Our Liebherr Machines Bulle proposal is a simple and cost effective approach with no EGR and SCR only (no DOC, no DPF). In addition to this standard Stage4/tier4f solution, this paper will then presented in details our technical solutions and results of a combined SCR on Filter systems currently in development for specific markets needs and preparing any further legislations steps.
Event
2014-09-18
The AGCO Power Inc. located in Finland is as one of the most important suppliers for heavy duty diesel engines mainly used for agricultural and industrial applications. To overcome the challenges for Tier4f / Stage 4 emission regulations for their new engines a high sophisticated SCR control strategy was developed in a close cooperation with the engineering partner AVL. To handle the wide range of applications (Tractors, Combines, Forest machines, ..) for the different customers (Challenger, Fendt, Massey Ferguson, Valtra, ..) for 8 main engine types (from 3 up to 12 cylinder engines) using two technology routes (EGR + SCR and SCR only) with a minimum calibration effort, a model based approach was used within the whole development phase. Different SCR technologies were analyzed and their behavior transferred into physical models in the AVL MoBEO development environment. The same model parameters are also used for the real-time models in the ECU (Engine Control Unit), which are one of the core elements for the model based dosing control.
Event
2014-09-17
Event
2014-09-17
Event
2014-09-17
Event
2014-09-17
The environmental and health impact of individual vehicles/vessels are regulated through various legal acts by the European Commission. For energy efficiency or emissions of carbon dioxide, thus the climate impact the situation is different especially if all modes of transport is included. With the Euro VI regulations the shortcomings of previous emission stages, i.e. real driving emissions, seems to have been solved making road transport a clean choice of transport for the first time. The traditional green modes of transport like diesel rail and inland waterway vessels lag behind, both in stringency and real world emissions but are energy efficient.
Event
2014-09-17
Event
2014-09-17
Event
2014-09-17
Evolution of diesel aftertreatment systems needs to target complex challenges such as CO2 / GHG reduction, in-use compliance, OBD, reduction of development, installation and operation costs, and integration of emerging technologies. Modeling and simulation tools help meeting these challenges through in-depth understanding of component performance and interactions, faster calibration process, improved robustness, and overall system optimization. The presentation discusses the model-based development process, beginning with modeling the system components, followed by integration with control algorithms into a system model, and then into a powertrain or vehicle model. Issues such as in-service conformity, NTE, and system robustness are addressed.
Event
2014-09-17
With Euro VI being in place, drivers for further development of exhaust aftertreatment systems will be primarily fuel efficiency, cost reduction and durability improvements. Performance enhancements of individual components are possible and ongoing. In order to cope with reduced exhaust temperatures new system approaches are favourable. Among these, SCR on filter concept is the most advanced. Open questions and challenges will be discussed and analyzed. This includes filtration efficiency, filter regeneration, NO2 performance as well as ash and soot effects. Also, the standard muffler layout has to be questioned.
Event
2014-09-17
Emission control legislation in the developed markets of Europe, North America and Japan has resulted in the reduction of millions of tonnes of potential emissions from Heavy Duty Diesel (HDD) vehicles, leading to major environmental benefits. In order to meet the regulations, sophisticated catalyst-based systems have been developed which typically reduce emissions of CO, HC, NOx and Particulate Matter (PM) by over 90%. These systems typically comprise a Diesel Oxidation Catalyst (DOC), Catalysed Soot Filter (CSF), Selective Catalytic Reduction (SCR) catalysts, and an Ammonia Slip Catalyst (ASC). Despite the very high efficiencies of these systems, which are maintained for half a million miles and more, there is continued drive for further improvements to enable, for example, additional increases in fuel efficiency, which is a key driver in the HDD area, particularly in the on road sector. There are also proposals from California’s ARB for an optional, much tighter, NOx standard on the 2020 timeframe.
Event
2014-09-17
In 2008, Scania started to develop an exhaust aftertreatment system for Euro 6. For Euro 5, Scania had taken the decision to go for heavy EGR with a two-stage EGR cooling solution enabling Euro 5 without SCR. But for Euro 6, it was obvious that EGR alone would not be a successful technical strategy. In 2011, Scania, as the first OEM in the heavy truck industry, launched a ready-to-order truck fulfilling Euro 6 emission standards, featuring a combined EGR and SCR solution. Today, Scania deliver Euro6 trucks with SCR-only and believe that is the path to go in the future. In the presentation, Scania Euro6 development is described along with the strategy behind it and the first two years of field experience is shared.
Event
2014-09-17
This presentation will cover recent developments in technology to reduce heavy duty engine CO2 emissions, focussing on measures to reduce engine friction, investigations with a high pressure common rail system, and the application of a highly efficient SCR system.
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