INNIO Jenbacher designs and manufactures
gas engines and
cogeneration modules in the Austrian town of
Jenbach in
Tyrol
Tyrol ( ; historically the Tyrole; ; ) is a historical region in the Alps of Northern Italy and western Austria. The area was historically the core of the County of Tyrol, part of the Holy Roman Empire, Austrian Empire and Austria-Hungary, f ...
. It is part of the INNIO portfolio of products and is one of their gas engine technologies; the other being
Waukesha Engines. Jenbacher emerged from the former Jenbacher Werke, which was founded in 1959 and manufactured gas and
diesel engine
The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compr ...
s, and locomotives. The company was bought out by
General Electric
General Electric Company (GE) was an American Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1892, incorporated in the New York (state), state of New York and headquartered in Boston.
Over the year ...
in 2003. In November 2018 the company became part of INNIO as part of an acquisition of Advent International and was renamed INNIO Jenbacher GmbH & Co. OHG.
History

Although the company itself has a relatively short history, its origins go far back. In 1487, a mine and foundry was founded by the
Fugger
The House of Fugger () is a German family that was historically a prominent group of European bankers, members of the fifteenth- and sixteenth-century mercantile patriciate of Augsburg, international mercantile bankers, and venture capitalists. ...
family. In 1657, all Fugger properties in Tyrol were taken over by the state. Due to exhaustion of the copper and silver deposits, the mine changed its focus to iron. The company was acquired by Julius and Theodor Reitlinger in 1881. In 1909, the mine ran out of iron as well, and after a boom during the First World War only the foundry was left. In 1914, Friedrich Reitlinger took over the factory after the death of Julius Reitlinger, making it a state-protected company at the start of the First World War. In 1938, shortly after Austria's annexation to the National Socialist German Reich, he committed suicide with his daughter after being held captive in his home by the National Socialists. The company was confiscated and Aryanized for the benefit of the state of Tyrol. At the beginning of
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, all of Tyrol was seized and Aryanized, and the company was to 'work for the benefit of the country'. The plant made
brake pads for the
Deutsche Reichsbahn
The ''Deutsche Reichsbahn'' (), also known as the German National Railway, the German State Railway, German Reich Railway, and the German Imperial Railway, was the Weimar Republic, German national Rail transport, railway system created after th ...
, and from 1939 they made
airframe parts and rocket motors in
Jenbach (some to liquid-fueled
aircraft
An aircraft ( aircraft) is a vehicle that is able to flight, fly by gaining support from the Atmosphere of Earth, air. It counters the force of gravity by using either Buoyancy, static lift or the Lift (force), dynamic lift of an airfoil, or, i ...
rocket engine designs from
Hellmuth Walter KG) for
Heinkel as the licensee. The plant thus became the largest armaments factory in Tyrol. There was massive use of Nazi forced labor: two thirds of the 3,000 employees were forced laborers.
A women's camp, which was a subcamp of the Reichenau labor education camp under the control of the Gestapo, was located at the Jenbacher Heinkel-Werke. The Ukrainian forced laborer Eugenia Kaser reports deplorable conditions in the camp. In 1945 it was occupied by the American army. After the collapse at the end of the Second World War the factory was placed under public administration. It had to be converted to civilian production, and started out with
cookware, but also started with the repair of railway wagons.
Because of the availability of appropriate specialists and skilled workers, it was decided to concentrate on the production of
diesel engine
The diesel engine, named after the German engineer Rudolf Diesel, is an internal combustion engine in which Combustion, ignition of diesel fuel is caused by the elevated temperature of the air in the cylinder due to Mechanics, mechanical Compr ...
s. The first product was a 15 hp two-stroke engine, which was very successful and was manufactured in large quantities. This was followed by more two-stroke and four stroke models of engine. The JW 15, 8 TO 15 Hp; the JW20, 15 to 20 Hp; and the JW20M, the same engine, but with inertial mass damping to counteract the vibrations of the single cylinder. The company was now pushed to develop generators, compressors and pumps of the same quality.
In 1959 the company was constituted as Jenbacher Werke AG, the main shareholders being
Creditanstalt with 35% and
Mannesmann with 26%, the rest being
free float
In the context of stock markets, the public float or free float represents the portion of Share (finance), shares of a corporation that are in the hands of public investors as opposed to locked-in shares held by promoters, company officers, control ...
. Creditanstalt increased its share steadily and after the purchase of Mannesmann's share through the CA-controlled
Andritz AG they acquired a vast majority of the share capital. In 1979, 1,550 people were employed at the plant. In 1988 the majority of the company was acquired by Auricon Beteiligungs AG. In 1991 it was organized into the Jenbacher Energy Systems AG (JES) and the Jenbacher Transport Systems Ltd. (JTS) divisions. In the same year, JTS acquired 29.9% of the British company Telfos Holding, which gave the company an influence on
Ganz-Hunslet, the former Hungarian locomotive works Ganz-
MÁVAG
MÁVAG (''Magyar Királyi Állami Vas-, Acél- és Gépgyárak''; ''Hungarian Royal State Iron, Steel and Machine Factories'') was the largest Hungarian rail vehicle producer. MÁVAG company was the second largest industrial enterprise after the ...
. On December 12, 1991, JTS attained majority share capital of Telfos, and bought out
General Electric
General Electric Company (GE) was an American Multinational corporation, multinational Conglomerate (company), conglomerate founded in 1892, incorporated in the New York (state), state of New York and headquartered in Boston.
Over the year ...
's remaining share in 1993. In 1997, Jenbacher attempted to enter the
tram
A tram (also known as a streetcar or trolley in Canada and the United States) is an urban rail transit in which Rolling stock, vehicles, whether individual railcars or multiple-unit trains, run on tramway tracks on urban public streets; some ...
market with help from
AEG The initials AEG are used for or may refer to:
Common meanings
* AEG (German company)
; AEG) was a German producer of electrical equipment. It was established in 1883 by Emil Rathenau as the ''Deutsche Edison-Gesellschaft für angewandte El ...
through a Jenbacher daughter company called Integral Verkehrstechnik AG Jenbach. Integral lost over 22 million
Euro
The euro (currency symbol, symbol: euro sign, €; ISO 4217, currency code: EUR) is the official currency of 20 of the Member state of the European Union, member states of the European Union. This group of states is officially known as the ...
s from 1997 to 2001, and led to the sale of the Jenbacher rail car division to
Connex. In 1998 Jenbacher started its relationship with
Clarke Energy which is now one of its largest gas engine distributors, The remaining gas engine-energy division was acquired by General Electric in 2003. In 2018 GE sold its Jenbacher and Waukesha brands to the private equity company Advent International which created the new company INNIO.
In 2020, Innio takes over the spare parts manufacturer and gas engine service specialist PowerUP, which was founded in 2016 by former Innio employees.
Rail cars
Jenbacher's railway activities started in 1945, when they started performing repairs of
rolling stock
The term rolling stock in the rail transport industry refers to railway vehicles, including both powered and unpowered vehicles: for example, locomotives, Railroad car#Freight cars, freight and Passenger railroad car, passenger cars (or coaches) ...
for the French occupation forces.
In 1949, they started making diesel engines,
power cars, trucks and compressors powered by the aforementioned engines.
In addition, they made rail cars for the
Austrian Federal Railways and other railroad companies.
Jenbacher Werke designated their locomotives according to a system derived from the type of power transmission, approximate performance, wheel arrangement or application and the operating weight. The ÖBB series 2060 was therefore the work designation DH200B28. The other models carried the name JW.
The Railway engineering department was taken over by
Molinari Rail.
Company profile and products

Jenbacher currently specializes in
lean burn
Lean-burn refers to the burning of fuel with an excess of air in an internal combustion engine. In lean-burn engines the air–fuel ratio may be as lean as 65:1 (by mass). The air:fuel ratio needed to stoichiometry, stoichiometrically combust gas ...
gas engines, including
cogeneration plants and
containerized power generator sets utilizing said gas engines. Jenbacher began producing gas engines in 1957.
Jenbacher's main facility still resides in Jenbach in Austria, and employs over 1400 workers. Jenbacher manufactures the gas engines from the ground-up at this facility, including in-house
crankshaft
A crankshaft is a mechanical component used in a reciprocating engine, piston engine to convert the reciprocating motion into rotational motion. The crankshaft is a rotating Shaft (mechanical engineering), shaft containing one or more crankpins, ...
s.
Jenbacher gas engines are exclusively
Otto cycle units with industrial grade
spark plug
A spark plug (sometimes, in British English, a sparking plug, and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air ...
s providing ignition. Smaller models utilize
stoichiometric
Stoichiometry () is the relationships between the masses of reactants and products before, during, and following chemical reactions.
Stoichiometry is based on the law of conservation of mass; the total mass of reactants must equal the total m ...
combustion, while the larger engines are
lean burn
Lean-burn refers to the burning of fuel with an excess of air in an internal combustion engine. In lean-burn engines the air–fuel ratio may be as lean as 65:1 (by mass). The air:fuel ratio needed to stoichiometry, stoichiometrically combust gas ...
engines with prechamber ignition.
Jenbacher engines run on
natural gas
Natural gas (also fossil gas, methane gas, and gas) is a naturally occurring compound of gaseous hydrocarbons, primarily methane (95%), small amounts of higher alkanes, and traces of carbon dioxide and nitrogen, hydrogen sulfide and helium ...
,
landfill gas
Landfill gas is a mix of different gases created by the action of microorganisms within a landfill as they decompose organic waste, including for example, food waste and paper waste. Landfill gas is approximately forty to sixty percent methane, ...
,
sewage gas,
biogas
Biogas is a gaseous renewable energy source produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste, Wastewater treatment, wastewater, and food waste. Biogas is produced by anaerobic ...
,
mine gas,
coal gas
Coal gas is a flammable gaseous fuel made from coal and supplied to the user via a piped distribution system. It is produced when coal is heated strongly in the absence of air. Town gas is a more general term referring to manufactured gaseous ...
,
syngas
Syngas, or synthesis gas, is a mixture of hydrogen and carbon monoxide in various ratios. The gas often contains some carbon dioxide and methane. It is principally used for producing ammonia or methanol. Syngas is combustible and can be used as ...
and
hydrogen
Hydrogen is a chemical element; it has chemical symbol, symbol H and atomic number 1. It is the lightest and abundance of the chemical elements, most abundant chemical element in the universe, constituting about 75% of all baryon, normal matter ...
. Due to this flexibility they are often used in applications where gas would normally be
flare
A flare, also sometimes called a fusée, fusee, or bengala, bengalo in several European countries, is a type of pyrotechnic that produces a bright light or intense heat without an explosion. Flares are used for distress signaling, illuminatio ...
d off or released into the atmosphere, to turn waste into energy.
Methane
Methane ( , ) is a chemical compound with the chemical formula (one carbon atom bonded to four hydrogen atoms). It is a group-14 hydride, the simplest alkane, and the main constituent of natural gas. The abundance of methane on Earth makes ...
has a much higher
global warming potential
Global warming potential (GWP) is a measure of how much heat a greenhouse gas traps in the atmosphere over a specific time period, relative to carbon dioxide (). It is expressed as a multiple of warming caused by the same mass of carbon dioxide ( ...
than CO
2, and it is therefore interesting for operators to burn gas in engines instead of releasing it into the atmosphere. Further applications include data centers, greenhouses or heat & power units for industrial use. They are also offered as containerised units.
Jenbacher J920 FleXtra
The Jenbacher J920 FleXtra is Jenbacher's newest product, a
V20 gas engine delivering up to 9.5 MW (12,915 PS). When it is put into production it will be Jenbachers most efficient gas engine available with an
electrical efficiency
The efficiency of a system in electronics and electrical engineering is defined as useful power output divided by the total electrical power consumed (a vulgar fraction, fractional Expression (mathematics), expression), typically denoted by the G ...
of 48.7%,
and a
combined heat and power thermal efficiency
In thermodynamics, the thermal efficiency (\eta_) is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, steam turbine, steam engine, boiler, furnace, refrigerator, ACs etc.
For ...
of over 90%.
The J920 uses
Miller cycle valve timing and
two-stage turbocharging, along with a 'three-module' construction consisting of the engine itself, the
electrical generator
In electricity generation, a generator, also called an ''electric generator'', ''electrical generator'', and ''electromagnetic generator'' is an electromechanical device that converts mechanical energy to electrical energy for use in an extern ...
and the turbocharging unit consisting of both
turbocharger
In an internal combustion engine, a turbocharger (also known as a turbo or a turbosupercharger) is a forced induction device that is powered by the flow of exhaust gases. It uses this energy to compress the intake air, forcing more air into th ...
s and
charge air coolers along with intake and exhaust piping and bypass valves. In common with most current
marine diesel engines
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine current power
* Marine debris
* Marine energy
* Marine habitats
* ...
, the J920 has a segmented
camshaft, along with combining individual
cylinder heads, the
cylinder liner,
piston
A piston is a component of reciprocating engines, reciprocating pumps, gas compressors, hydraulic cylinders and pneumatic cylinders, among other similar mechanisms. It is the moving component that is contained by a cylinder (engine), cylinder a ...
and
connecting rod
A connecting rod, also called a 'con rod', is the part of a reciprocating engine, piston engine which connects the piston to the crankshaft. Together with the crank (mechanism), crank, the connecting rod converts the reciprocating motion of the p ...
into one easily removable
modular 'power unit' for ease of
maintenance and overhaul.
See also
*
Clarke Energy
References
Literature
* Franz Mathis: ''Big Business in Österreich''. Verlag für Geschicht und Politik, Wien 1986,
*
Sepp Tezak: ''Die Jenbacher Werke''. In: ''Schienenverkehr aktuell''. 1988/4, S. 12
* Helmut Petrovitsch: ''Lokomotiven aus Tirol. Chronik des Schienenfahrzeugbaues der Jenbacher Werke AG''. In: ''Schienenverkehr aktuell''. 1987/12 – 1990/6 (20 Teile)
External links
INNIO Jenbacher GmbH & CO OGJenbacher J920 - New Power Generation Technology - INNIO
Clarke Energy - GE Jenbacher Distributor and Service Partner
{{Authority control
Electrical generation engine manufacturers
Gas engine manufacturers
Engine manufacturers of Austria
Manufacturing companies established in 1959
1950s establishments in Austria
2003 mergers and acquisitions
General Electric acquisitions
Austrian brands
Companies based in Tyrol (federal state)
2018 mergers and acquisitions