Knorr-Bremse

German braking system manufacturer

Knorr-Bremse AG

Company type| Public

Traded as

* FWB: KBX
* MDAX Component

Industry| Manufacturing
Predecessor| Süddeutsche Bremsen-AG
Founded| 1905; 120 years ago (1905), in Berlin, Germany
Headquarters| Munich, Germany

Key people

* Marc Llistosella (CEO)
* Dr. Reinhard Ploss (chairman of the Supervisory Board)

Products| braking systems (rail and road)
Revenue| 7,925,610,000 euro (2023)

Operating income

| 869,870,000 euro (2023)

Net income

| 552,530,000 euro (2023)
Total assets| 8,248,560,000 euro (2023)

Number of employees

| 33,319 (2023)
Website| www.knorr-bremse.com
Knorr-Bremse AG headquarters today, Munich

Knorr-Bremse AG is a German manufacturer of braking systems for rail and commercial vehicles that has operated since 1905. Other products in the company's portfolio include intelligent door systems, control components, air conditioning systems for rail vehicles, torsional vibration dampers, and transmission control systems for commercial vehicles.

The Group has a presence in over 30 countries, at 100 locations.[1] In 2022, the Group's workforce of over 31,000 achieved worldwide sales of EUR 7.15 billion.[2][self-published source][3]

## History

[edit]

This section needs additional citations for verification. Please help improve this article by adding citations to reliable sources in this section. Unsourced material may be challenged and removed. (January 2021) (Learn how and when to remove this message)

|

### Foundation and early years

[edit]

Georg Knorr (1859–1911) Bruno Kunze (1854–1935) Knorr-Bremse GmbH, Berlin (1908) Süddeutsche Bremsen-AG, Munich (1924) with the USS Los Angeles (ZR-3) shortly after its maiden flight

The Germany engineer Georg Knorr established Knorr-Bremse GmbH in 1905 in Boxhagen-Rummelsburg, Neue Bahnhofstraße, outside Berlin (since 1920 part of Berlin-Friedrichshain).[4] From the onset, the company benefitted heavily from Knorr's prior experience working on railway braking systems at, Carpenter & Schulze, a separate company that he owned. Knorr promptly put into production an innovative rapid release brake that could bring passenger trains to a halt faster, more safely and consistently.[4]

In 1911, the company merged with "Continentale Bremsen-GmbH" to found Knorr-Bremse Aktiengesellschaft (AG). From 1913 onwards, a second manufacturing plant, new headquarters, a heating plant and other annex buildings were erected.[citation needed] During 1918, the company introduced the Kunze-Knorr freight train brake; for a time, Knorr-Bremse was the only supplier of these new brakes, not just in Germany and other European countries; the innovation was soon credited with a reduction in the rate of major accidents upon the railway.[4]

An early cornerstone of Knorr's commercial success was provided by an agreement with the Prussian State Railways, which at that time had formed the Prussian-Hessian Railway Company, to supply single-chamber express braking systems, first for passenger and later on for freight trains. The introduction of the "Knorr Druckluft-Einkammerschnellbremse" (K1) compressed-air brake, along with its derivatives, offered considerably enhanced safety performance compared with traditional systems. In the early twentieth century, train guards still had to operate brakes by hand, from so-called "brake vans". The first pneumatic brakes were of a basic design, but before long, indirect automatic systems using control valves were developed. See History of rail transport in Germany for an overview.

### Interwar period

[edit]

In 1920, the manufacturing plant of the first Bayerische Motoren-Werke AG (BMW, established in 1917/1918) located in Munich, Moosacher Straße, became a subsidiary of Knorr-Bremse, delivering brake systems as Süddeutsche Bremsen-AG for the Bavarian Group Administration, the former "Royal Bavarian State Railways".[5][6] There was no further interest in motor engines for aircraft and automobiles. The engine construction and the company name "BMW" were sold in 1922 to financier Camillo Castiglioni to be combined with the Bayerische Flugzeugwerke AG (BFW, located not far away), establishing the company a second time. For details see History of BMW and BFW/Messerschmitt.

Between 1922 and 1927, the company's new main manufacturing plant in Berlin at the Hirschberger Straße/Schreiberhauer Straße next to the Berlin Ringbahn was erected, a tunnelled road permitted direct access between the old and the new sites.[citation needed]

A second major sector of activity emerged during 1922 when Knorr-Bremse secured a patent for the use of pneumatic braking systems for commercial road vehicles.[4] One year later, the company became the first in Europe to develop a system that applied the brakes simultaneously to all four wheels of a truck as well as its trailer; the resultant reduction in braking distances made a significant contribution to improving road safety. By the end of the 1930s, around 90 percent of all trucks in Germany between 7 and 16 tonnes in weight had been equipped with Knorr-Bremse systems.[4]

During 1931, the company launched a new standard brake for trains, the Hildebrand-Knorr brake (HiK brake).[4] Over the follow three years, improved models suited for a wider range of trains, including express trains, became available as well. Due to its effectiveness, the HiK brake was adopted by 17 countries; by 1955, there were roughly 280,000 units in operation worldwide.[4]

The Second World War impacted the company greatly.[4] During the conflict, Knorr-Bremse had manufactured the Swedish light MG35/36 machine guns AKA "Knorr-Bremse machine guns" on behalf of the Wehrmacht. At the conclusion of the war, Germany was split into West and East Germany; the company's facilities in the eastern part of Berlin were quickly expropriated and dismantled by the Soviets as a part of war reparations.[4]

### Cold War era

[edit]

Little remained of the company's operations save for numerous blueprints that several employees had managed to retrieve.[4] During 1946, Knorr-Bremse was re-established in Volmarstein, West Germany, and efforts commenced to rebuild the company proper. Three years later, its reconstruction was aided by the United States' Marshall Plan, which financed the Deutsche Bundesbahn's building of 18,000 new freight cars equipped with Knorr-Bremse brake units.[4]

During 1953, its new headquarters were completed at the Süddeutsche Bremsen-AG plant in Munich.[4] That same year, the company introduced two key products, the automatic load-dependent braking system, that was designed to be effectively used on the increasing size, weight, and speed of trucks, and the Knorr Standard Brake (KE brake) train brake with graduated release control valve. The latter received International Union of Railways (UIC) approval and led to sales across 40 different countries, totaling almost 1.3 million units.[4]

During the 1960s, Knorr-Bremse started offering a newly-developed air compressor program to customers; it also made greater use of compressed air to perform various functions, including air suspension, level regulation, pneumatic gearshifts, and door actuation.[4] In 1969, it presented its first disc brake for heavy trucks at the IAA trade fair in Frankfurt; it comprised a hydraulically-operated hinged caliper brake. By this point, the company was already undertaking research into advanced control systems, which included microelectronics and digital techniques, seeking to develop commercially viable innovations for sale.[4] In 1973, Knorr-Bremse established the Knorr Brake Corporation with the purpose of developing a presence in the lucrative North American market.[4]

During 1981, the company undertook the first installation of an anti-lock braking system (ABS) as standard equipment upon trucks being produced by MAN Truck & Bus, which had partnered with Knorr-Bremse on the development of ABS.[4] Four years later, the company secured approval from the Association of American Railroads (AAR) for its recently developed DB 60 direct-release control valve for freight trains; via its US subsidiary, the DB 60 entered use in North America in 1985, where it was commonly used on exceptionally long freight trains hauled by multiple locomotives.[4]

In 1985, Knorr-Bremse GmbH merged with Süddeutsche Bremsen AG to form Knorr-Bremse AG, after which numerous structural changes were made and the business was reoriented around its core activities.[4] By 1988, the Thiele family had acquired 100 percent of the shares in Knorr-Bremse AG.[4]

During 1987, the company revealed its prototype pneumatic disc brake; it would be a sales success, with 20 million Knorr-Bremse disc brakes being in operation across the world by 2024.[4] In 1989, Knorr-Bremse also released its electronic braking system (EBS), which integrated brake control, ABS and traction control into a single electronic-based system, possessing shorter response times and reduced braking distances compared to traditional pneumatic control, and thus greater safety. During the early 1990s, Knorr-Bremse's electro-pneumatic independent brake units were installed into the ICE 1 high speed trainsets operated by DB Fernverkehr.[4]

Between 1993 and 1994, the company was reorganised; the rail and commercial vehicles were separated into independent companies; thereafter, management pursued a strategy orientated around international expansion.[4] In 1999, a joint venture was created between Knorr-Bremse and Bosch. Three years later, the company acquired the American brake manufacturer Bendix Corporation.[7][4]

### Recent history

[edit]

During late 2016, Vossloh Electrical Systems was acquired by the company.[8]

Knorr-Bremse long held a stake in one of its main European competitors, Haldex.[9] During the mid 2010s, various parties submitted bids to fully acquire Haldex, including Knorr-Bremse; the company's bid was observed by Haldex's board of directors as having been the most generous, but also to have "done nothing to eliminate or reduce the regulatory risk".[3][10] By December 2016, it had purchased 86.1 percent of Haldex's shares to strengthen its takeover bid.[11] During mid 2017, the European Commission launched an anti-trust probe into the acquisition.[12] Knorr-Bremse ultimately chose to discountinue its bid, selling on all of its shares in Haldex by June 2022.[13]

On 13 October 2022, it was announced that Knorr-Bremse AG had chosen Marc Llistosella to be a member of the Executive Board and CEO. The appointment takes effect as of 1 January 2023.[14]

In September 2024, the company acquired Alstom's American rail signalling business for $690 million.[15]

## Products

[edit]

### Rail vehicles

[edit]

Knorr-Bremse not only produces complete braking systems for all types of rolling stock but also door systems, toilets, air conditioning, couplings and windscreen wipers. In 2000, it purchased British manufacturer, Westinghouse Brakes (formerly the brakes division of Westinghouse Brake and Signal Company Ltd), from Invensys, and subsequently moved its operations from Chippenham to the nearby English town of Melksham, Wiltshire.[16]

Since 2002, Knorr-Bremse has been working on variable gauge systems for more efficient solutions to break of gauge problems.[citation needed]

### Commercial vehicles

[edit]

Knorr-Bremse has been developing and manufacturing braking systems for commercial vehicles since 1920, for trucks and semi-trailer tractor units over 6 tonnes, buses, trailers or special vehicles.[citation needed]

### Control systems

[edit]

The product portfolio of Knorr-Bremse includes Rail vehicle control systems, Air supply, and control systems, HVAC systems, Driver assistance systems, Digital solutions for rail vehicles, Wheel-slip prevention systems, Vehicle safety systems, and On-board energy storage systems.[17]

## See also

[edit]

* New York Air Brake
* Robert Bosch GmbH
* Westinghouse Air Brake Company

## References

[edit]

1. ^ "Knorr-Bremse worldwide". Knorr-Bremse Group. Retrieved 9 September 2020.
2. ^ "Company Information". ir.knorr-bremse.com. Retrieved 12 May 2023.
3. ^ a b Maudes Capital (24 September 2016). "Haldex AB Bidding War. Get It While You Can!". Seeking Alpha. Retrieved 24 September 2016.
4. ^ a b c d e f g h i j k l m n o p q r s t u v w x "110th anniversary: Looking back on 110 years of expertise" (PDF). knorr-bremse.com. Retrieved 21 July 2024.
5. ^ "BMW Group Classic: New location with historic roots.+++BMW AG acquires plot and buildings from Knorr-Bremse AG in the Milbertshofen district of Munich – Original BMW production site returns to company ownership". BMW. 26 February 2014.
6. ^ McIntosh, Jil (21 September 2017). "Behind the Wheel of BMW's History". autotrader.ca.
7. ^ "Bendix Commercial Vehicle Systems". Retrieved 16 October 2023.
8. ^ "Vossloh Electrical Systems sold to Knorr-Bremse", railwaygazette.com, 21 December 2016
9. ^ "Ownership structure". Haldex AB. Retrieved 19 May 2017.
10. ^ "Knorr-Bremse's Haldex takeover has slim chance of EU approval - Haldex chairman". Reuters. 3 July 2017.
11. ^ Taylor, Edward; Wissenbach, Ilona (7 December 2016). "Knorr-Bremse wins Haldex takeover battle against ZF". europe.autonews.com.
12. ^ "Mergers: Commission opens in-depth investigation into Knorr-Bremse's proposed takeover of competing brakes manufacturer Haldex". European Commission. 24 July 2017.
13. ^ Osborne, Bradley (19 June 2022). "Knorr-Bremse's stake in Haldex acquired by SAF-Holland". truckandbusbuilder.com.
14. ^ "Marc Llistosella to Become the New Chief Executive Officer of Knorr-Bremse AG". Knorr-Bremse. 13 October 2022. Retrieved 12 May 2023.
15. ^ Lea, Robert (2 September 2024). "Alstom sells American rail signalling business for $690m". The Times. Retrieved 2 September 2024.
16. ^ Invensys investor relations news release, 25 April 2000 Invensys Sells Westinghouse Brakes to Knorr-Bremse. Retrieved from the Internet Archive on 30 March 2008.
17. ^ Company profile and SWOT analysis of Knorr-Bremse AG, published by Platform Executive in February 2024 [1].

## External links

[edit]

* Official website

* v
* t
* e

Knorr-Bremse

People|

* Georg Knorr

Products|

* MG35/36 machine gun

Subsidiaries|

* Bendix Corporation
* Kiepe Electric
* New York Air Brake

Former subsidiaries|

* Glasgow Works
* Westinghouse Brake and Signal Company
* Wolverton Works

* v
* t
* e

Railway brakes

Types|

* Counter-pressure brake
* Countersteam brake
* Dynamic brake
* Eddy current brake
* Electromagnetic brake
* Exhaust brake
* Heberlein brake
* Hand brake
* Kunze-Knorr brake
* Railway air brake
* Disc brake
* Railway disc brake
* Regenerative brake
* Steam brake
* Track brake
* Vacuum brake

Manufacturers|

* Faiveley Transport
* Knorr-Bremse (New York Air Brake)
* Westinghouse Air Brake Company
* Westinghouse Brake and Signal Company

Other aspects|

* Brake van
* Diesel brake tender
* Diesel electric locomotive dynamic braking
* Electronically controlled pneumatic brakes
* Electro-pneumatic brake system on British railway trains
* Emergency brake (train)
* Retarder
* Dowty retarders

Related topics|

* Air brake
* Bicycle brake
* Brake
* Dead man's switch
* Drum brake
* Engine braking
* Hydraulic brake
* Pearson's Coupling
* Pneumatics
* Railroad Safety Appliance Act (United States)

* v
* t
* e

Westinghouse

Westinghouse Electric
Corp. (1886–2000)|

| Divisions|

* Advanced Energy
* Astronuclear
* Aviation
* Baldwin
* Broadcasting
* Combustion Turbine
* New England
* White-Westinghouse

|

Subsidiaries|

* British Westinghouse
* Bryant
* Infinity

Successors|

* CBS Corporation
* Viacom (1952–2006)
* Viacom (2005–2019)
* Paramount Global
* Westinghouse Electronics
* Westinghouse Licensing
* Westinghouse Electric Company

Products|

* A2W reactor
* Locomotives (list)
* S2W reactor
* Transit Expressway Revenue Line

People|

* George Westinghouse

Related topics|

* Electrification of the New York, New Haven, and Hartford Railroad
* George Westinghouse Award
* George Westinghouse Medal
* Regeneron Science Talent Search
* Westinghouse Air Brake Building
* Westinghouse Tower
* Westinghouse Works, 1904

Related companies|

* Westinghouse Air Brake
* Westinghouse Brake and Signal
* Westinghouse Rail Systems
* WABCO Vehicle Control Systems

* Category
* Commons

Authority control databases

International|

* ISNI
* VIAF

National|

* Germany
* United States
* France
* BnF data
* Czech Republic

*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template