Jonas Hesselman
Encyclopedia
Jonas Hesselman was a Swedish
engineer
. He built the first spark ignition engine with direct injection
of fuel into the cylinder.
Hesselman worked from 1899 to 1916 for AB Diesel Engines (later Atlas Diesel, now Atlas Copco
) in Sickla in Nacka
just outside Stockholm
, from 1901 as Head of Construction. Here he also developed Rudolf Diesel
's engine further and won international recognition as an authority on diesel engine
s. In 1916 he opened his own factory and in 1925 presented the Hesselman engine
, a hybrid between an Otto engine
and diesel engine.
Jonas Hesselman also designed electrical vehicle components, among others, the motor that became the basis for Hesselman Elhydraulik, now Haldex Hydraulics. In 1970, Hesselman Elhydraulik developed the hydraulic power unit that still serves as the prototype for the existing lifts for trucks.
He was elected a member of the Royal Swedish Academy of Sciences
in 1934.
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....
engineer
Engineer
An engineer is a professional practitioner of engineering, concerned with applying scientific knowledge, mathematics and ingenuity to develop solutions for technical problems. Engineers design materials, structures, machines and systems while considering the limitations imposed by practicality,...
. He built the first spark ignition engine with direct injection
Direct injection
Direct injection may refer to:*A music recording technique more commonly referred to as Direct Input*A method of fuel injection for an internal combustion engine, as in a gasoline direct injection petrol engines and most diesel engines...
of fuel into the cylinder.
Hesselman worked from 1899 to 1916 for AB Diesel Engines (later Atlas Diesel, now Atlas Copco
Atlas Copco
Atlas Copco is a Swedish industrial company that was founded in 1873. It manufactures industrial tooling and equipment.The Atlas Copco Group is a global industrial group of companies headquartered in Stockholm, Sweden. Revenues for 2009 totaled 63 billion SEK. The Group employs more than 33,000...
) in Sickla in Nacka
Nacka
Nacka is the municipal seat of Nacka Municipality and part of Stockholm urban area in Sweden. The municipality's name harks back to an 16th century industrial operation established by the Crown at Nacka farmstead where conditions for water mills are good...
just outside Stockholm
Stockholm
Stockholm is the capital and the largest city of Sweden and constitutes the most populated urban area in Scandinavia. Stockholm is the most populous city in Sweden, with a population of 851,155 in the municipality , 1.37 million in the urban area , and around 2.1 million in the metropolitan area...
, from 1901 as Head of Construction. Here he also developed Rudolf Diesel
Rudolf Diesel
Rudolf Christian Karl Diesel was a German inventor and mechanical engineer, famous for the invention of the diesel engine.-Early life:Diesel was born in Paris, France in 1858 the second of three children of Theodor and Elise Diesel. His parents were Bavarian immigrants living in Paris. Theodor...
's engine further and won international recognition as an authority on diesel engine
Diesel engine
A diesel engine is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel, which is injected into the combustion chamber...
s. In 1916 he opened his own factory and in 1925 presented the Hesselman engine
Hesselman engine
The Hesselman engine is a hybrid between a petrol engine and a Diesel engine introduced by Swedish engineer Jonas Hesselman in 1925. It represented the first use of direct gasoline injection on a spark-ignition engine...
, a hybrid between an Otto engine
Otto engine
-Otto Engine Types:There are three types of internal combustion engines designed by German inventors Nikolaus August Otto and his partner Eugen Langen. They are the 1862 compression engine, which failed, the 1864 atmospheric engine, and the engine known today as the "Gasoline Engine", the Otto...
and diesel engine.
Jonas Hesselman also designed electrical vehicle components, among others, the motor that became the basis for Hesselman Elhydraulik, now Haldex Hydraulics. In 1970, Hesselman Elhydraulik developed the hydraulic power unit that still serves as the prototype for the existing lifts for trucks.
He was elected a member of the Royal Swedish Academy of Sciences
Royal Swedish Academy of Sciences
The Royal Swedish Academy of Sciences or Kungliga Vetenskapsakademien is one of the Royal Academies of Sweden. The Academy is an independent, non-governmental scientific organization which acts to promote the sciences, primarily the natural sciences and mathematics.The Academy was founded on 2...
in 1934.