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Ercole Marelli
Ercole Marelli (Milan, 19 May 1867 - Tremezzina, 28 August 1922 ) was an Italian engineer and entrepreneur. Biography Marelli was born in Milan on May 19, 1867, the son of a craftsman from the Como area. At fifteen he began working as an apprentice at a mechanical workshop. In 1885 he was presented to Bartolomeo Cabella, director of the Italian Brown Boveri Tecnomasio and hired as a mechanic for measuring instruments and for electrical work applied to lighting. In October 1888 he went to Asunción in Paraguay, just twenty years old, where he assembled and operated an electrical system for the Concha Sociedad plant. Foundation of Ercole Marelli In 1891, when he returned to Italy, he founded a modest workshop of electrical appliances in the centre of Milan, assisted by a worker; they manufactured apparatus of physics and geodesy, electric machines for school toilets, batteries, accumulators and electro-medical devices. From 1898 it also began to trade AC motors. Sesto San Giovanni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Milan
Milan ( , , Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4 million, while its metropolitan city has 3.26 million inhabitants. Its continuously built-up urban area (whose outer suburbs extend well beyond the boundaries of the administrative metropolitan city and even stretch into the nearby country of Switzerland) is the fourth largest in the EU with 5.27 million inhabitants. According to national sources, the population within the wider Milan metropolitan area (also known as Greater Milan), is estimated between 8.2 million and 12.5 million making it by far the largest metropolitan area in Italy and one of the largest in the EU.* * * * Milan is considered a leading alpha global city, with strengths in the fields of art, chemicals, commerce, design, education, entertainment, fashion, finance, healthcar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tremezzina
Tremezzina (Comasco: ) is a ''comune'' in the province of Como, in Lombardy, that formed on 25 May 2014 from a merger of the comunes of Lenno, Mezzegra, Ossuccio and Tremezzo. A referendum to create this comune was held on 1 December 2013. The referendum was passed with 63% yes and 37% no votes. The comune of Tremezzina was previously created in 1928 over Lenno, Mezzegra and Tremezzo, and divided into the separate comunes in 1947.D.L.C.p.S. 20 agosto 1947, n. 977 References States and territories established in 2014 Tremezzina, {{Como-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italian People
, flag = , flag_caption = The national flag of Italy , population = , regions = Italy 55,551,000 , region1 = Brazil , pop1 = 25–33 million , ref1 = , region2 = Argentina , pop2 = 20–25 million , ref2 = , region3 = United States , pop3 = 17-20 million , ref3 = , region4 = France , pop4 = 1-5 million , ref4 = , region5 = Venezuela , pop5 = 1-5 million , ref5 = , region6 = Paraguay , pop6 = 2.5 million , region7 = Colombia , pop7 = 2 million , ref7 = , region8 = Canada , pop8 = 1.5 million , ref8 = , region9 = Australia , pop9 = 1.0 million , ref9 = , region10 = Uruguay , pop10 = 1.0 million , r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Como
Como (, ; lmo, Còmm, label=Comasco dialect, Comasco , or ; lat, Novum Comum; rm, Com; french: Côme) is a city and ''comune'' in Lombardy, Italy. It is the administrative capital of the Province of Como. Its proximity to Lake Como and to the Alps has made Como a tourist destination, and the city contains numerous works of art, churches, gardens, museums, theatres, parks, and palaces: the ''Como Cathedral, Duomo'', seat of the Diocese of Como; the Basilica of Sant'Abbondio; the Villa Olmo; the public gardens with the Tempio Voltiano; the Teatro Sociale; the ''Broletto'' or the city's medieval town hall; and the 20th-century Casa del Fascio (Como), Casa del Fascio. With 215,320 overnight guests in 2013, Como was the fourth-most visited city in Lombardy after Milan, Bergamo, and Brescia. In 2018, Como surpassed Bergamo becoming the third most visited city in Lombardy with 1.4 million arrivals. Como was the birthplace of many historical figures, including the poet Caeciliu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown Boveri
Brown, Boveri & Cie. (Brown, Boveri & Company; BBC) was a Swiss group of electrical engineering companies. It was founded in Zürich, in 1891 by Charles Eugene Lancelot Brown and Walter Boveri who worked at the Maschinenfabrik Oerlikon. In 1970 BBC took over the Maschinenfabrik Oerlikon. In 1988 it merged with ASEA to form ABB. Early History of BBC Brown Boveri BBC Brown Boveri was established in 1891. The company was one of only a few multinational corporations to operate subsidiaries that were larger than the parent company. Because of the limitations of the Swiss domestic market, Brown Boveri established subsidiaries throughout Europe relatively early in its history, and at times had difficulty maintaining managerial control over some of its larger operating units. The merger with ASEA, a company which was praised for its strong management, was expected to help Brown Boveri reorganize and reassert control over its vast international network. Activity in Britain Brown Boveri' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asunción
Asunción (, , , Guarani: Paraguay) is the capital and the largest city of Paraguay. The city stands on the eastern bank of the Paraguay River, almost at the confluence of this river with the Pilcomayo River. The Paraguay River and the Bay of Asunción in the northwest separate the city from the Occidental Region of Paraguay and from Argentina in the south part of the city. The rest of the city is surrounded by the Central Department. Asunción is one of the oldest cities in South America and the longest continually inhabited area in the Río de la Plata Basin; for this reason it is known as "the Mother of Cities". From Asunción, Spanish colonial expeditions departed to found other cities, including the second foundation of Buenos Aires, that of other important cities such as Villarrica, Corrientes, Santa Fe, Córdoba, Santa Cruz de la Sierra and 65 more. Administratively, the city forms an autonomous capital district, not a part of any department. The metropolitan area ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraguay
Paraguay (; ), officially the Republic of Paraguay ( es, República del Paraguay, links=no; gn, Tavakuairetã Paraguái, links=si), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to the east and northeast, and Bolivia to the northwest. It has a population of seven million, nearly three million of whom live in the capital and largest city of Asunción, and its surrounding metro. Although one of only two landlocked countries in South America (Bolivia is the other), Paraguay has ports on the Paraguay and Paraná rivers that give exit to the Atlantic Ocean, through the Paraná-Paraguay Waterway. Spanish conquistadores arrived in 1524, and in 1537, they established the city of Asunción, the first capital of the Governorate of the Río de la Plata. During the 17th century, Paraguay was the center of Jesuit missions, where the native Guaraní people were converted to Christianity and introduced to European culture. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sesto San Giovanni
Sesto San Giovanni (; lmo, Sest San Giovann, label=Western Lombard ), locally referred to as just Sesto ( lmo, Sest, links=no), is a ''comune'' in the Metropolitan City of Milan, Lombardy, northern Italy. Its railway station is the northernmost stop on the Milan Metro M1 line. The comune has the honorary title of city, despite being a ''de facto'' suburb of Milan. An unimportant agglomerate of buildings until the 19th century, Sesto San Giovanni grew during the end of the 19th century and in the early 20th century, becoming the site of several industries, including companies such as Falck, Campari, Magneti Marelli and Breda. In that period the population increased rapidly, from 5,000 inhabitants in 1880 to 14,000 in 1911. After World War II, Sesto became populated by many migrants from other parts of Italy, leading to an increased population of 95,000 inhabitants in 1981. Sesto used to be referred to as the " Stalingrad of Italy", due to the strong historical presence of the Ita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centrifugal Pump
Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor. They are a sub-class of dynamic axisymmetric work-absorbing turbomachinery. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber (casing), from which it exits. Common uses include water, sewage, agriculture, petroleum, and petrochemical pumping. Centrifugal pumps are often chosen for their high flow rate capabilities, abrasive solution compatibility, mixing potential, as well as their relatively simple engineering. A centrifugal fan is commonly used to implement an air handling unit or vacuum cleaner. The reverse function of the centrifugal pump is a water turbine converting potential energy of water pressure into mechanical rotational energy. His ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transformer
A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. A varying current in any coil of the transformer produces a varying magnetic flux in the transformer's core, which induces a varying electromotive force (EMF) across any other coils wound around the same core. Electrical energy can be transferred between separate coils without a metallic (conductive) connection between the two circuits. Faraday's law of induction, discovered in 1831, describes the induced voltage effect in any coil due to a changing magnetic flux encircled by the coil. Transformers are used to change AC voltage levels, such transformers being termed step-up or step-down type to increase or decrease voltage level, respectively. Transformers can also be used to provide galvanic isolation between circuits as well as to couple stages of signal-processing circuits. Since the invention of the first constant-potential transfo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ignition Magneto
An ignition magneto, or high-tension magneto, is a magneto that provides current for the ignition system of a spark-ignition engine, such as a petrol engine. It produces pulses of high voltage for the spark plugs. The older term ''tension'' means ''voltage''. The use of ignition magnetos is now confined mainly to engines where there is no other available electrical supply, for example in lawnmowers and chainsaws. It is also widely used in aviation piston engines even though an electrical supply is usually available. In this case, the magneto's self-powered operation is considered to offer increased reliability; in theory, the magneto should continue operation as long as the engine is turning. History Firing the gap of a spark plug, particularly in the combustion chamber of a high-compression engine, requires a greater voltage (or ''higher tension'') than can be achieved by a simple magneto. The ''high-tension magneto'' combines an alternating current magneto generator a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petrol Engine
A petrol engine (gasoline engine in American English) is an internal combustion engine designed to run on petrol (gasoline). Petrol engines can often be adapted to also run on fuels such as liquefied petroleum gas and ethanol blends (such as ''E10'' and ''E85''). Most petrol engines use spark ignition, unlike diesel engines which typically use compression ignition. Another key difference to diesel engines is that petrol engines typically have a lower compression ratio. Design Thermodynamic cycle Most petrol engines use either the four-stroke Otto cycle or the two-stroke cycle. Petrol engines have also been produced using the Miller cycle and Atkinson cycle. Layout Most petrol-powered piston engines are straight engines or V engines. However, flat engines, W engines and other layouts are sometimes used. Wankel engines are classified by the number of rotors used. Compression ratio Cooling Petrol engines are either air-cooled or water-cooled. Ignition Petrol e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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