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Viewing 151 to 180 of 163909
Event
2014-09-23
Training / Education
2014-09-23
Driven by the need for lower emissions, better fuel economy and improved drive quality, optimized powertrain calibrations are required for the many different vehicle configurations on today's roadways. While powertrain components such as the internal combustion engine, transmission, and hybrid electric powertrain are somewhat familiar to the automotive industry, the control theory, calibrations and system interactions between these components are a relatively unfamiliar aspect. This webinar will introduce participants to the concepts behind optimized powertrain calibrations and how they impact fuel consumption, exhaust emissions, and vehicle performance. Participants will also gain exposure to the role that the calibration plays in the system level interactions of the various powertrain components. Each participant will be asked to view the recording from the one-hour SAE Vehicle/Powertrain Calibration Engineering: What Is It and Why Is It For You? Telephone/Webcast as a course requirement.
Training / Education
2014-09-18
All gasoline powered vehicles and equipment create exhaust and evaporative and refueling emissions. Unlike exhaust emissions, which occur only when the engine is operating, evaporative emissions (evap emissions) occur all the time. Controlling evap emissions to PZEV levels is as challenging as controlling exhaust emissions. It becomes even more important in the case of plug-in hybrid electric vehicles (PHEV) and extended range electric vehicles (EREV) which generate evaporative fuel vapors, but have no place to burn/consume the vapors when the engine does not operate for extended periods of time. Constantly changing evaporative regulations including new test procedures for accommodating future EREVs and PHEVs vehicle evap systems, new test fuels to reflect changing commercial gasolines, identifying and controlling new sources of fuel vapor emissions, etc., require that individuals working in this area have a solid understanding of both regulatory and system design issues for evap emissions control.
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
Increasing the work per unit of fuel burned of mobile non-road equipment has positive economic and environmental implications through reduced owning and operating costs and lower greenhouse gas emissions. To realize and drive these benefits the enormous diversity in the types and applications of non-road machines and the functions they perform must be considered. The optimization of fuel efficiency, productivity and cost while meeting emissions requirements for off-road equipment can be best achieved by taking a total systems perspective, considering applications, and appropriately tailoring technologies. This presentation will illustrate the benefits of systems optimization using a detailed example of a hybrid hydraulic excavator and examining the benefit of technologies at the component, engine, machine system, and worksite levels.
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
Viewing 151 to 180 of 163909

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