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Book Description
DEPUIS UN SIECLE, LA COMBUSTION DES MELANGES FORTEMENT DILUES ET STRATIFIES APPLIQUEE AU MOTEUR A ALLUMAGE COMMANDE CONSTITUE UNE POTENTIALITE MAJEURE POUR LA REDUCTION DE LA CONSOMMATION ET DES EMISSIONS POLLUANTES. DANS LES ANNEES SOIXANTE-DIX, CE BENEFICE A PARTIELLEMENT ETE DEGAGE AVEC LES MOTEURS A CHARGE STRATIFIEE HONDA CVCC ET LAG. ACTUELLEMENT, LES PERFORMANCES DE LA COMBUSTION INITIEE PAR L'ETINCELLE D'UNE BOUGIE EMPECHE L'UTILISATION DES MELANGES FORTEMENT DILUES ET STRATIFIES. L'ETUDE MONTRE L'INFLUENCE DES PRODUITS DE COMBUSTION RESIDUELS SUR LA COMBUSTION DES MELANGES PAUVRES HOMOGENES APPLIQUEE AU MOTEUR. LA LITTERATURE RAPPORTE QUE LES SOLUTIONS D'INITIATION NON CONVENTIONNELLE TELLES QUE LA COMBUSTION PAR JET(S) PULSE(S) OU L'INITIATION ASSISTEE PAR JET D'HYDROGENE FAVORISENT LA COMBUSTION DES MELANGES FORTEMENT DILUES. L'ETUDE OPTIQUE DE LA COMBUSTION MOTEUR CONFIRME L'INITIATION DE LA COMBUSTION MOTEUR PAR DE MULTIPLES FRONTS DE FLAMME. L'ETUDE MOTEUR, CYCLE A CYCLE, DEMONTRE UNE COMBUSTION SENSIBLEMENT PLUS RAPIDE ET REPETABLE QUE DANS LE CAS BOUGIE. CES CARACTERISTIQUES AUTORISENT LA COMBUSTION DE MELANGES PAUVRES HOMOGENES PROCHE DE LA LIMITE D'INFLAMMABILITE. A PARTIR DES PRECEDENTES ETUDES, UN CONCEPT D'INITIATION NOVATEUR, L'AUTO-INFLAMMATION PILOTEE PAR INJECTION DE RADICAUX, EST FORMULE. LA COMBUSTION MOTEUR INDUITE PAR L'APIR DEMONTRE UNE RAPIDITE ET UNE REPETABILITE SENSIBLEMENT AMELIOREES PAR RAPPORT A UNE INITIATION PAR LA BOUGIE ET LE PJC. DANS UNE CONFIGURATION PLUS PROCHE DE L'INDUSTRIALISATION, LA COMBUSTION MOTEUR INDUITE PAR L'APIR EST MOINS DEGRADEE QUE LORS D'UNE INITIATION PAR LE PJC.
Book Description
DEPUIS UN SIECLE, LA COMBUSTION DES MELANGES FORTEMENT DILUES ET STRATIFIES APPLIQUEE AU MOTEUR A ALLUMAGE COMMANDE CONSTITUE UNE POTENTIALITE MAJEURE POUR LA REDUCTION DE LA CONSOMMATION ET DES EMISSIONS POLLUANTES. DANS LES ANNEES SOIXANTE-DIX, CE BENEFICE A PARTIELLEMENT ETE DEGAGE AVEC LES MOTEURS A CHARGE STRATIFIEE HONDA CVCC ET LAG. ACTUELLEMENT, LES PERFORMANCES DE LA COMBUSTION INITIEE PAR L'ETINCELLE D'UNE BOUGIE EMPECHE L'UTILISATION DES MELANGES FORTEMENT DILUES ET STRATIFIES. L'ETUDE MONTRE L'INFLUENCE DES PRODUITS DE COMBUSTION RESIDUELS SUR LA COMBUSTION DES MELANGES PAUVRES HOMOGENES APPLIQUEE AU MOTEUR. LA LITTERATURE RAPPORTE QUE LES SOLUTIONS D'INITIATION NON CONVENTIONNELLE TELLES QUE LA COMBUSTION PAR JET(S) PULSE(S) OU L'INITIATION ASSISTEE PAR JET D'HYDROGENE FAVORISENT LA COMBUSTION DES MELANGES FORTEMENT DILUES. L'ETUDE OPTIQUE DE LA COMBUSTION MOTEUR CONFIRME L'INITIATION DE LA COMBUSTION MOTEUR PAR DE MULTIPLES FRONTS DE FLAMME. L'ETUDE MOTEUR, CYCLE A CYCLE, DEMONTRE UNE COMBUSTION SENSIBLEMENT PLUS RAPIDE ET REPETABLE QUE DANS LE CAS BOUGIE. CES CARACTERISTIQUES AUTORISENT LA COMBUSTION DE MELANGES PAUVRES HOMOGENES PROCHE DE LA LIMITE D'INFLAMMABILITE. A PARTIR DES PRECEDENTES ETUDES, UN CONCEPT D'INITIATION NOVATEUR, L'AUTO-INFLAMMATION PILOTEE PAR INJECTION DE RADICAUX, EST FORMULE. LA COMBUSTION MOTEUR INDUITE PAR L'APIR DEMONTRE UNE RAPIDITE ET UNE REPETABILITE SENSIBLEMENT AMELIOREES PAR RAPPORT A UNE INITIATION PAR LA BOUGIE ET LE PJC. DANS UNE CONFIGURATION PLUS PROCHE DE L'INDUSTRIALISATION, LA COMBUSTION MOTEUR INDUITE PAR L'APIR EST MOINS DEGRADEE QUE LORS D'UNE INITIATION PAR LE PJC.
Author: Roy MacLeod Publisher: Springer Science & Business Media ISBN: 1402054904 Category : Science Languages : en Pages : 292
Book Description
This book represents a first considered attempt to study the factors that conditioned industrial chemistry for war in 1914-18. Taking a comparative perspective, it reflects on the experience of France, Germany, Austria, Russia, Britain, Italy and Russia, and points to significant similarities and differences. It looks at changing patterns in the organisation of industry, and at the emerging symbiosis between science, industry and the military.
Author: Jacques Lafontaine Publisher: Springer ISBN: 3319207350 Category : Mathematics Languages : en Pages : 408
Book Description
This book is an introduction to differential manifolds. It gives solid preliminaries for more advanced topics: Riemannian manifolds, differential topology, Lie theory. It presupposes little background: the reader is only expected to master basic differential calculus, and a little point-set topology. The book covers the main topics of differential geometry: manifolds, tangent space, vector fields, differential forms, Lie groups, and a few more sophisticated topics such as de Rham cohomology, degree theory and the Gauss-Bonnet theorem for surfaces. Its ambition is to give solid foundations. In particular, the introduction of “abstract” notions such as manifolds or differential forms is motivated via questions and examples from mathematics or theoretical physics. More than 150 exercises, some of them easy and classical, some others more sophisticated, will help the beginner as well as the more expert reader. Solutions are provided for most of them. The book should be of interest to various readers: undergraduate and graduate students for a first contact to differential manifolds, mathematicians from other fields and physicists who wish to acquire some feeling about this beautiful theory. The original French text Introduction aux variétés différentielles has been a best-seller in its category in France for many years. Jacques Lafontaine was successively assistant Professor at Paris Diderot University and Professor at the University of Montpellier, where he is presently emeritus. His main research interests are Riemannian and pseudo-Riemannian geometry, including some aspects of mathematical relativity. Besides his personal research articles, he was involved in several textbooks and research monographs.
Author: P. M. Banks Publisher: Elsevier ISBN: 1483260666 Category : Science Languages : en Pages : 445
Book Description
Aeronomy, Part A is an attempt to make a comprehensive exposition of the processes in aeronomy, the study of composition, movement, and thermal balance of the upper regions of the planetary atmosphere. The text covers topics such as atmospheric regions and atmospheric density, the temperature and molecular mass of the atmosphere; the permanent constituents and the molecular and isotonic composition of the homosphere; and the transition from the homosphere to the heterosphere. Also covered are topics such as the temperature gradient and energies in the thermosphere, conditions at 200km and above 250km, solar radiation and ionization, and aeronomic reactions. The book is recommended for scientists, especially natural physicists, who would like to know more about the field of aeronomy and its advances.
Author: Sandor Hervey Publisher: Routledge ISBN: 1134899327 Category : Language Arts & Disciplines Languages : en Pages : 273
Book Description
Thinking Translation is a comprehensive and revolutionary 20-week course in translation method. It has been fully and successfully piloted at the University of St. Andrews. The course offers a challenging and entertaining approach to the acquisition of translation skills. Translation is presented as a problem-solving discipline. Discussion, examples and a full range of exercise work allows students to acquire the skills necessary for a broad range of translation problems. Thinking Translation draws on a wide range of material from technical texts to poetry and song.
Author: Unesco. International Scientific Committee for the Drafting of a General History of Africa Publisher: Univ of California Press ISBN: 9780520067035 Category : History Languages : en Pages : 1076
Book Description
The hardcover edition of volume 8 was published in 1994. This paperback edition is the eighth and final volume to be published in the UNESCO General History of Africa. Volume 8 examines the period from 1935 to the present, and details the role of African states in the Second World War and the rise of postwar Africa. This is one of the most important books in the entire series, and as such, it is an unabridged paperback.
Author: CYRIL.. ROBINET
Author: CYRIL.. ROBINET
Author: Jean-Louis Magnet
Author: Roy MacLeod
Author: Rabindra Nath Pati
Author: J. Belle
Author: Jacques Lafontaine
Author: P. M. Banks
Author: Sandor Hervey
Author: Richard J. Wenning
Author: Unesco. International Scientific Committee for the Drafting of a General History of Africa