ŠKODA Museum presents an extraordinary exhibit: the W12 aircraft engine by Laurin & Klement

› At the ŠKODA Museum in Mladá Boleslav: Unique 24.4-litre L&K Lorraine-Dietrich 450

engine built in 1926

› Automobile manufacturer Laurin & Klement’s involvement in aviation dates back to 1909

› L&K Chief Designer Otto Hieronimus successfully made the first powered flight in today’s

Czech Republic with an L&K engine in April 1910

Mladá Boleslav, 25 January 2019 – An impressive exhibit at the ŠKODA Museum

commemorates a little-known chapter of a company steeped in tradition. On loan from the

Czech National Museum, the spectacular aircraft engine L&K Lorraine-Dietrich 450 built in

1926 can now be seen at ŠKODA’s headquarters. The magnificent W12 engines were

produced in Mladá Boleslav in the 1920s.

Andrea Frydlová, Head of the ŠKODA Museum in Mladá Boleslav explains, “Laurin & Klement and

thus ŠKODA AUTO achieved great success not only with their passenger and commercial vehicles,

motorcycles, bicycles and motorized ploughs – their modern aircraft engines were once also in

great demand at home and abroad. Our company was one of the first in the world to produce

aircraft engines, starting in 1909. The licensed twelve-cylinder L&K Lorraine-Dietrich 450 marks one

of the absolute highlights of aviation engineering in Mladá Boleslav. Its technology and dimensions

are extremely impressive.” At the same time, Andrea Frydlová notes, “Our guests can combine their

tour of the ŠKODA Museum with a visit to the associated Metoděj Vlach Aviation Museum in Mladá

Boleslav as well as Ferdinand Porsche’s Birth House in Vratislavice nad Nisou. The ŠKODA

Museum offers a special combined ticket for all three places worth seeing.”

By the first decade of the 20th century, Laurin & Klement/ŠKODA AUTO were following the boom in

aviation very closely. The first enthusiastic airman in the region, who flew a plane he had

constructed himself with a modified L&K automobile engine, was the Czech aviation pioneer

Metoděj Vlach. However, his construction could only manage short jumps rather than a real flight.

However, the Chief Designer of the emerging manufacturer, engineer Otto Hieronimus, was more

successful. In 1909, he began developing the first purpose-built aviation engine in Austria-Hungary

– and personally set a historic milestone: On 15 April 1910 at 17:00, Hieronimus became the first

person in today’s Czech Republic to make a successful flight in a craft heavier than air. His Bleriottype

aircraft was powered by the L&K EL engine developed and manufactured in Mladá Boleslav.

At the racecourse in Chuchle near Prague, the aviation engineer’s flight lasted 2 minutes and 26

seconds, covering a distance of around 200 meters. The L&K type EL engine had aluminium

engine blocks and crankcases and four cast-iron cylinders lined with sheet metal. Only three of

these engines were produced, as Laurin & Klement’s production capacity was already utilized by

numerous domestic and foreign orders for the popular L&K brand’s passenger and commercial


In the second half of the 1920s, the global economic crisis and the difficult reconstruction work after

the war led to a temporary drop in automobile sales. The management of Laurin & Klement decided

to utilize their production facilities to build modern aircraft engines by the L&K Lorraine-Dietrich

brand. L&K had acquired two licenses in 1924 from the French automobile and aircraft

manufacturer Lorraine-Dietrich and began producing a 400-hp eight-cylinder and the top-of-therange

twelve-cylinder with 450 hp in Mladá Boleslav.

Now, thanks to the kind loan from the National Technical Museum in Prague, the more powerful of

the two engines is on display at the ŠKODA Museum. In addition to its impressive dimensions and

displacement of 24.4 litres, what makes the exhibit from 1926 truly unique is its twelve-cylinder

construction in a W-configuration, i.e. in three rows of four cylinders. With a maximum output of 450

hp (331 kW) at 1,850 revolutions per minute, the twelve-cylinder consumed 240 grams of fuel plus

12 grams of oil per horsepower per hour. The qualities of the licensed engines won over the

Czechoslovak Ministry of Defence, who, in late 1926, ordered 50 of these monumental twelvecylinder


The high-quality aircraft engines from Mladá Boleslav were used in the Czech planes Letov Š-12

and ŠB-16. The engines were also in demand far beyond the former Czechoslovakia’s boarders, for

example, they were exported to Lithuania and Turkey. The most impressive evidence of the

engines’ efficiency is the long-distance flight by Lieutenant Colonel Jaroslav Skála, who flew from

Prague to Tokyo in 1927 in a Letov Š-16.

The ŠKODA Museum in Mladá Boleslav saw a record number of visitors in 2018 with 273,811

guests from home and abroad, surpassing last year’s figure by almost 8 percent. The modern

exhibition sheds light on ŠKODA AUTO’s diverse corporate history. Visitors are also welcome to

view the vehicle depot. Alongside the main exhibition, the ŠKODA Museum regularly organizes

cultural events and thematic exhibitions. The opportunity to combine a visit to the museum with a

factory tour of ŠKODA AUTO’s current production facilities is also popular among visitors. This

requires booking in advance. In addition to the main plant in Mladá Boleslav, visitors who have prebooked

can also visit the sites in Kvasiny and Vrchlabí.

Catherine Van Geel

PR Manager, D'Ieteren NV

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