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Impéria was a Belgian automobile manufactured from 1906 until 1948. Products of the Ateliers Piedboeuf of Liège, the first cars were designed by the German Paul Henze. These were four-cylinders of 3, 4.9, and 9.9 litres. The next year, the company moved to Nessonvaux, Trooz municipality, and began production in the old Pieper factory. Impéria produced a monobloc 12 hp (8.9 kW) in 1909. In 1910, the company merged with Springuel.
The Nessonvaux factory began producing Impéria-Abadals from about 1916. In 1921, it built three ohc 5.6-litre straight-eights. These were quickly replaced by an ephemeral ohc 3-litre 32-valve four-cylinder which had a top speed of 90 mph (140 km/h). This was followed by an 1100 cc slide-valve 11/22 hp four designed by Couchard, one of the first cars ever built with a sunroof. Its engine rotated counterclockwise, and its transmission brake also served as a servo for those on the front wheels. In 1927 a six-cylinder of 1624 cc appeared; this had been available in three-carburettor Super Sports form from 1930.
In 1925, the company hired Louis de Monge as chief research engineer. Some of his work included torsion bar suspension and automatic transmissions. De Monge left in 1937 to join Bugatti, where he would design the Bugatti 100P racer plane.
Around and on top of the factory buildings, there was a test track over 1 km long. The track was built in 1928. The only other rooftop test tracks were on Fiat's Lingotto plant, opened in 1923, and Palacio Chrysler in Buenos Aires, opened in 1928.
Over the course of four years, Impéria took over three other Belgian car manufacturers: Métallurgique (1927), Excelsior (1929), and Nagant (1931). From 1934 until the company folded it built mainly front-wheel-drive Adlers with Belgian-made coachwork. The company merged with Minerva in 1934, but they split in 1939.
After 1948 Impéria assembled Standard Vanguards under license and also built a unique convertible version. After Standard decided to set up a new factory in Belgium, the factory was left without work and had to close doors in 1957.
In popular culture
- Pegasus, newsletter of the Bugatti Association, issue 23
- "Trooz (Municipality, Province of Liège, Belgium)". 12 January 2010.
- "Testing cars on the factory rooftop - Imperia (Nessonvaux, Liège, Belgium)". 21 April 2009.
- Ritzinger, André. "Imperia TA-8". www.ritzsite.nl. Retrieved 10 July 2013.
- Tatra87. "Automotive History: Other European Deadly Sins (Part 1) - Minerva/Imperia, Belgium's Automotive Waterloo". www.curbsideclassic.com. Retrieved 20 February 2019.
- The Final Solution, pp. 87, 88.
- "Imperia Automobiles". Imperia-auto.be. Retrieved 19 July 2009.
- David Burgess Wise, The New Illustrated Encyclopedia of the Automobile
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