1,048 research outputs found

    A quasi-dimensional model of pre-chamber spark-ignition engines

    No full text
    Increasingly stringent pollutant and CO2 emission standards require the car manufacturers to investigate innovative solutions to further improve the fuel economy of their fleets. Among these techniques, an extremely lean combustion has a large potential to simultaneously reduce the NOx raw emissions and the fuel consumption of spark-ignition engines. Application of pre-chamber ignition systems is a promising solution to realize a favorable air/fuel mixture ignitability and an adequate combustion speed, even with very lean mixtures. In this work, the combustion characteristics of an active pre-chamber system are experimentally investigated using a single-cylinder research engine. Conventional gasoline fuel is injected into the main chamber, while the pre-chamber is fed with compressed natural gas. In a first stage, an experimental campaign was carried out at various speeds, spark timings and air-fuel ratios. Global engine operating parameters as well as cylinder pressure traces, inside main combustion chamber and pre-chamber, were recorded and analyzed. Based on the available experimental data, a phenomenological model of this unconventional combustion system with divided combustion chambers was developed and validated. The model was then implemented in a 1D code. The proposed numerical approach shows the ability to simulate the experimental data with good accuracy, using a fixed tuning constant set. The model demonstrates to correctly describe the behavior of a pre-chamber combustion system under different operating conditions and to capture the physics behind such an innovative combustion system concept

    Front Matter, Table of Contents, Preface, List of Authors

    No full text
    Front Matter, Table of Contents, Preface, List of Author

    Post-lobotomy epilepsy illustrated by the story of Ellinor Hamsun, the daughter of the famous Norwegian author Knut Hamsun

    No full text
    In Scandinavia, at least 11.500 people were lobotomized in the period 1939–1983. Beside grave personality changes, the surgery caused epilepsy in 10–35% of the patients. Moreover, many died due to perioperative bleedings, convulsive status epilepticus or SUDEP. Most of the stories of these people are anonymous and their post-lobotomy lives are scarcely documented. If it was not for the fact that Ellinor Hamsun (1916–1987) was the daughter of the famous Nobel Prize winning Norwegian author Knut Hamsun, her lobotomy story and the subsequent iatrogenic epilepsy would probably have remained unknown

    Beundring og opposisjon. Forholdet mellom Knut Hamsun og Johannes V. Jensen

    No full text
    AbstractIn this article, I will discuss Knut Hamsun’s connection to the Danish capital Copenhagen, and his lifelong acquaintance with the famous Danish author, Johannes V. Jensen. By the end of the 19th century, Copenhagen was the cultural capital of the Nordic countries. Together with many other eminent Nordic artists, Knut Hamsun spent considerable time in Copenhagen and experienced personal and professional growth during his stays there. Johannes V. Jensen and Hamsun knew each other for years and held each other in high esteem, yet their acquaintance was marked by both fascination and critique. Johannes V. Jensen, in particular, had mixed feelings and opinions about Hamsun. This article focusses on the similarities and differences between Knut Hamsun and Johannes V. Jensen, and discusses how an initially shared value system could lead them in two opposite political directions.</jats:p

    Knut Hamsun en Hispanoamérica: hacia una revaloración

    No full text
    Although the work of Norwegian writer Knut Hamsun, the author of the masterpieces Hunger, Mysteries and Pan is at present not so familiar to the Spanish American readers, it is surprising to find that his titles were well received and widely published in the continent during the first years of the XXth century, particularly after he was awarded the Nobel prize in literature in 1920. Based on samples from library catalogues in Argentina, Colombia, Chile, México and Uruguay, this article intends to follow Spanish and Spanish American translations of Hamsun's works from 1919 to 2009.Aunque la obra del escritor noruego Knut Hamsun, autor de grandes novelas como Hambre, Misterios y Pan es actualmente poco conocida entre los lectores hispanoamericanos, sorprende la difusión y recepción que tuvo en el continente en los primeros años del siglo XX, especialmente a raíz de que obtuviera el premio Nobel de literatura en 1920. Con base en un muestreo de catálogos de bibliotecas en Argentina, Colombia, Chile, México y Uruguay, el presente artículo traza el camino recorrido por las traducciones españolas e hispanoamericanas de la obra de Hamsun desde 1919 hasta 2009

    Code Of Chivalry In Knut Hamsun’s Hunger Novel (1921): A Sociological Analysis

    No full text
    This study aimed at investigating the code of chivalry in Hunger novel. The study described the indicators of code of chivalry, showed how it was depicted in the novel, and revealed the reason of Knut Hamsun why he adressed code of chivalry in his novel. The type of this research is qualitative research. In analyzing this novel, the researcher used Sociological analysis. In this method, the writer used two types of data sources namely primary and secondary data sources. The primary data sources were taken from Hunger novel by Knut Hamsun. The secondary were taken from websites, articles, biography of the author, and the appropriate books which dealt with the research. The result of the study showed the following conclusions. First, there were thirteen of thirthy-six indicators of code of chivalry in the novel. Second, code of chivalry depicted in this novel through characters and events. Third, the reason why Knut Hamsun raised code of chivalry in his novel is to respond the society at that era. He concerned with the poor people around him

    Rousseauism and franciscanism in the works by Leopold Staff and Knut Hamsun

    No full text
    У статті розкриваються основні принципи поширеного в польському літературознавстві явища під назвою “францисканізм”, одним із найяскравіших виразників якого був Л. Стафф. Авторка вказує на спільність рис францисканізму з руссоїстською концепцією “природної людини”, що знайшли втілення у творчості Л. Стаффа та норвезького письменника К. Гамсуна, твори якого вплинули на спадщину українських та польських митців початку ХХ ст.The article outlines the essence of “franciscanism”, a notion generally accepted by the Polish literary critics, and focuses on the works by Leopold Staff, a typical representative of this trend. The author points out the features which relate franciscanism to the concept of “natural person” offered by Rousseau, and traces them in the texts written by L.Staff and the Norwegian author Knut Hamsun whose infl uences on Ukrainian and Polish authors at the turn of the 20th century cannot be overseen

    Hamsun down south and Hamsun up north. The art of arguing for an author museum

    No full text
    In 2005, two ambitious local initiatives were launched that independently of each other argued for establishing a national centre in their particular community to commemorate Nobel laureate Knut Hamsun (1859–1952): one in Grimstad on the southern coast of Norway, and the other at Hamarøy in northern Norway. Both places boasted a special ownership to the world famous author, but only the northern initiative materialized and a new museum opened in time for Hamsun’s 150 year anniversary. Why did Grimstad’s project fail and Hamarøy’s succeed? How did The Knut Hamsun Centre in Hamarøy follow up their stated goals and ambitions when planning the exhibitions? And how did Grimstad motivate plans for a downscaled centre several years later? A major issue in the article as well as in the discussion of the projects, is how the initiators argue for celebrating an author who supported Hitler and the Nazis during the war. Rhetorical and textual analysis of four documents offer insight into deliberations of how to exhibit a problematic legacy.In 2005, two ambitious local initiatives were launched that independently of each other argued for establishing a national centre in their particular community to commemorate Nobel laureate Knut Hamsun (1859–1952): one in Grimstad on the southern coast of Norway, and the other at Hamarøy in northern Norway. Both places boasted a special ownership to the world famous author, but only the northern initiative materialized and a new museum opened in time for Hamsun’s 150 year anniversary. Why did Grimstad’s project fail and Hamarøy’s succeed? How did The Knut Hamsun Centre in Hamarøy follow up their stated goals and ambitions when planning the exhibitions? And how did Grimstad motivate plans for a downscaled centre several years later? A major issue in the article as well as in the discussion of the projects, is how the initiators argue for celebrating an author who supported Hitler and the Nazis during the war. Rhetorical and textual analysis of four documents offer insight into deliberations of how to exhibit a problematic legacy
    corecore