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1000 tulosta hakusanalla Sumit Sharma

Potencjal EGR i CNG w zakresie osiagów i emisji silnika CRDI

Potencjal EGR i CNG w zakresie osiagów i emisji silnika CRDI

Sumit Roy; Ajoy Kumar Das; Probir Kumar Bose

Wydawnictwo Nasza Wiedza
2025
pokkari
Wraz z ewolucją rosnących obowiązk w związanych z przestrzeganiem przepis w dotyczących emisji w obecnym tysiącleciu i wobec calego spoleczeństwa, technologia oparta na silnikach wysokoprężnych przeszla zmianę paradygmatu w swoich perspektywach, aby osiągnąc pożądane cele niezbędnych norm emisji. W tym celu bezpośredni wtrysk paliwa Common Rail (CRDI) wprowadzil nową przewagę w systemach sterowania silnikami wysokoprężnymi. Dzięki calkowitej swobodzie regulacji czasu wtrysku, ciśnienia wtrysku i ilości wtryskiwanego paliwa można odpowiednio dostosowac parametry silnika, aby spelnic oczekiwane normy dotyczące osiąg w i emisji spalin. Niniejsza praca jest pr bą odkrycia potencjalnych korzyści plynących z dzialania CRDI, a także zbadania możliwości wykorzystania sprężonego gazu ziemnego (CNG) i technologii recyrkulacji spalin (EGR) jako realnych środk w lagodzenia pulapek związanych z kompromisem między sadzą, NOx i BSFC, kt ry jest wszechobecnym dylematem w kontekście silnik w wysokoprężnych.
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Potenziale dell'EGR e del CNG sulle prestazioni e sulle emissioni di un motore CRDI

Potenziale dell'EGR e del CNG sulle prestazioni e sulle emissioni di un motore CRDI

Sumit Roy; Ajoy Kumar Das; Probir Kumar Bose

Edizioni Sapienza
2025
pokkari
Con l'evoluzione dei crescenti obblighi di rispetto delle normative sulle emissioni nel presente millennio e nei confronti della societ in generale, la tecnologia basata sui motori diesel ha subito un cambiamento paradigmatico nelle sue prospettive per soddisfare gli obiettivi desiderati degli standard di emissione necessari. A tal fine, l'iniezione diretta common rail (CRDI) ha inaugurato una nuova frontiera nei sistemi di controllo dei motori diesel. In questo caso, la completa libert di temporizzazione dell'iniezione, la pressione di iniezione e la quantit di carburante iniettato possono essere opportunamente variate per soddisfare gli standard previsti di prestazioni ed emissioni. Il presente lavoro uno sforzo esplorativo volto a scoprire i vantaggi contingenti di tale funzionamento CRDI e anche a studiare la possibilit di utilizzare il gas naturale compresso (CNG) e la tecnologia di ricircolo dei gas di scarico (EGR) come mezzi praticabili per mitigare le insidie del compromesso tra fuliggine, NOx e BSFC, che stato un dilemma onnipresente nel contesto dei motori diesel.
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Homogeneous Catalysis

Homogeneous Catalysis

Sumit Bhaduri; Doble Mukesh

JOHN WILEY AND SONS LTD
2000
sidottu
Homogeneous catalysis made easy through real-world examples and illustrations. The field of homogeneous catalysis has grown dramatically over the past decade, boasting many new applications in the chemical, fine chemical, and pharmaceutical industries. This timely work offers a unified, easy-to-understand treatment of this challenging area of chemistry. With a practical emphasis and a thorough, selective survey of current literature, the authors present homogeneous catalytic reactions proven successful in industrial applications-illustrating both the mechanistic principles and illuminating new areas of academic and industrial research. An ideal self-study guide for inorganic chemists seeking to gain entry into the field as well as a much-needed reference for industry professionals, Homogeneous Catalysis: Mechanisms and Industrial Applications features: * Clear discussions of the fundamental chemical and chemical engineering concepts relevant to homogeneous catalysis * Important examples from selected industrial processes * Extensive references to cutting-edge research with application potential (through March of 1999) * Many tables and more than 100 illustrations to help explain difficult concepts * Problems of variable complexities accompanying each chapter
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Essays of a Lifetime

Essays of a Lifetime

Sumit Sarkar

State University of New York Press
2019
sidottu
A distillation of the historian's finest writings on modern Indian historical themes. For the past forty years or more, the most influential, respected, and popular scholar of modern Indian history has been Sumit Sarkar. When his first monograph, The Swadeshi Movement in Bengal 1903–1908, appeared in 1973 it soon became obvious that the book represented a paradigm shift within its genre. As Dipesh Chakrabarty put it when the work was republished in 2010: "Very few monographs, if any, have ever rivalled the meticulous research and the thick description that characterized this book, or the lucidity of its exposition and the persuasive power of its overall argument." Ten years later, Sarkar published Modern India 1885–1947, a textbook for advanced students and teachers. Its synthesis and critique of everything significant that had been written about the period was seen as monumental, lucid, and the fashioning of a new way of looking at colonialism and nationalism. Sarkar, however, changed the face not only of modern Indian history monographs and textbooks, he also radically altered the capacity of the historical essay. As Beethoven stretched the sonata form beyond earlier conceivable limits, Sarkar can be said to have expanded the academic essay. In his hands, the shorter form becomes in miniature both monograph and textbook. The present collection, which reproduces many of Sarkar's finest writings, shows an intellectually scintillating, skeptical-Marxist mind at its sharpest.
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