Examinatal Study on Common Rail Diesel Engine for Multi-injection Strategies
Based on diesel engine equipped with common rail, the multi-injection strategies common rail diesel engine test bed is established with NI test system. In this test bed, the influences of optimized multi-injection strategies to diesel engine performances are studied. The test results show that by using multi-injection strategies, the diesel engine exhaust temperature can reduce 50???, and noises can reduce 15dB, and emission improve obviously.
Nikzadfar, Kamyar, and Amir H. Shamekhi. "More than one decade with development of common-rail diesel engine management systems: a literature review on modelling, control, estimation and calibration." Proceedings of the Institution of Mechanical Engineer
Diesel engines are becoming more popular due to their low fuel consumption and emissions. The performance and emissions of diesel engines are strictly influenced by injection pattern and induced air quality. Utilization of diesel engines with mechatronic systems altogether with advent common-rail (CR) injection systems -which promotes the flexibility of injection controlhas further increased diesel engine favorability and decreased the level of relevant emissions and noise. Development of mechatronic systems is a hieratical procedure; especially in the case of CR diesel engine control, the extent and diversity of involved topics leads to a complex multi-stage development procedure. Many researches have been carried out and a rich literature has been formed in the field, which addresses different aspects of diesel engine management systems (EMS) development procedure. Investigation of the existing literature will help researchers in the field to have a better understanding of whole diesel EMS development procedure and make them familiar with new trends, state of art technologies and research fields. In this article, the control strategy development of CR diesel EMS is considered using existing literature, i.e. the related literature has been collected and categorized into five main categories of modeling, sensitivity analysis, controller design, estimation and calibration. A brief description of every categories followed by the relevant literature is given in paper and the common methods as well as the state of the arts have been discussed in each section. Finally, the strength and weakness of the existing methods and the potential for further promotions have been mentioned for each stage of EMS development and a roadmap for CR diesel EMS development has been presented.
The Open Mobile Alliance: Delivering Service Enablers for Next-Generation Applications
Apractical overview of OMA specifications and how they enable mobile multimedia services & much more ! The Open Mobile Alliance (OMA) is an industry forum, which develops open specifications to help in the creation of applications and services to be deployed over converged networks. The alliance is the leading industry forum for generating market-driven specifications for interoperable mobile service enablers that facilitate global user adoptions of mobile multimedia services. Members include traditional wireless industry segments, such as mobile operators mobile operators (e.g. AT&T, China Mobile, Orange, Sprint Nextel, T-Mobile, Telefonica, Vodafone), equipment and mobile systems manufacturers (e.g. Alcatel-Lucent, Ericsson, Motorola, Nokia, Philips, Samsung, Siemens, Sony-Ericsson), and Information Technology vendors (e.g. BEA Systems, IBM, Microsoft, Oracle Corporation, Sun Microsystems and NEC). Since its formation in 2002, the OMA has made significant progress in areas such as push-to-talk over cellular, device management, presence and group management, and messaging. The Open Mobile Alliance: Provides a comprehensive overview of the service enablers published by the OMA, tying together all the different piece parts developed by the individual working groups Offers a thorough introduction to the OMA Service Environments (OSE) and the specification process for enabling technologies. Discusses enablers for services such as gaming, IMS, Parlay, mobile broadcast and web services. Contains contributions from all stakeholders in the mobile application value chain. The Open Mobile Alliance Alliance is an invaluable resource for OMA members, product managers, network architects and planners, standards managers, standards engineers and IT professionals. Advanced Students and lecturers on mobile application development and standardization courses will also find this book of interest."The success of OMA is due to its individual members' contributions, and this book is testament to their hard work. The individual members' efforts and the authors of this book are to be congratulated on their magnificent achievements." Mark Cataldo, Senior Advisor, Orange SA, OMA Technical Plenary Chairman