Jonas Hesselman (9 April 1877- 20 December 1957) was a

Swedish Swedish or ' may refer to: Anything from or related to Sweden, a country in Northern Europe. Or, specifically: * Swedish language, a North Germanic language spoken primarily in Sweden and Finland ** Swedish alphabet, the official alphabet used by ...

engineer Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limit ...

. He built the first spark ignition engine with direct injection of fuel into the cylinder.

Biography

Knut Jonas Elias Hesselman was born at Å församling in Östergötland, Sweden. He was the son of factory owner Bror August Hesselman and Marie Louise Hesselman, née Åberg. He was the brother of professor Henrik Hesselman (1874–1943) and linguist Bengt Hesselman (1875–1952). Hesselman graduated in 1899 from

KTH Royal Institute of Technology The KTH Royal Institute of Technology ( sv, Kungliga Tekniska högskolan, lit=Royal Institute of Technology), abbreviated KTH, is a public research university in Stockholm, Sweden. KTH conducts research and education in engineering and technolog ...

, Department of Mechanics. He worked from 1899 to 1916 for AB Diesel Engines (later Atlas Diesel, now

Atlas Copco Atlas Copco (Copco from Compagnie Pneumatique Commerciale) is a Swedish multinational industrial company that was founded in 1873. It manufactures industrial tools and equipment. The Atlas Copco Group is a global industrial group of companies ...

) in Sickla in Nacka just outside Stockholm, from 1901 as Head of Construction. Here he also developed

Rudolf Diesel Rudolf Christian Karl Diesel (, ; 18 March 1858 – 29 September 1913) was a German inventor and mechanical engineer who is famous for having invented the diesel engine, which burns diesel fuel; both are named after him. Early life and educat ...

's engine further and won international recognition as an authority on

diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-ca ...

s. In 1916 he opened his own factory and in 1925 presented the Hesselman engine, a hybrid between an

Otto engine The Otto engine was a large stationary single-cylinder internal combustion four-stroke engine designed by the German Nicolaus Otto. It was a low-RPM machine, and only fired every other stroke due to the Otto cycle, also designed by Otto. Typ ...

and diesel engine. Jonas Hesselman also designed electrical vehicle components, among others, the motor that became the basis for Hesselman Elhydraulik, now Haldex AB. In 1970, Hesselman Elhydraulik developed the hydraulic power unit that still serves as the prototype for the existing lifts for trucks. Jonas Hesselman was a resident of "Villa Hesselman" at Storängen outside Stockholm. The villa was designed in 1906 by architect Albin Brag (1878-1937). He lived here until his death in 1957.

References

Other sources

* (Translated title: ''Vehicle history of

Scania Scania, also known by its native name of Skåne (, ), is the southernmost of the historical provinces (''landskap'') of Sweden. Located in the south tip of the geographical region of Götaland, the province is roughly conterminous with Skåne ...

1891-1991'') *Lundeberg, Erik (1931) ''Hesselmanmotorn som bilmotor'' (Stockholm: Dædalus)

External links

Haldex website
* 1877 births 1957 deaths People from Östergötland KTH Royal Institute of Technology alumni Swedish engineers Members of the Royal Swedish Academy of Sciences History of the diesel engine Manufacturing company founders {{Sweden-engineer-stub

Biography

See also

References

Other sources

External links