Turbodiesel - History

History

The turbocharger was invented in the early 20th century by Alfred Büchi, a Swiss engineer and the head of diesel engine research at Gebruder Sulzer engine manufacturing company in Winterthur. Büchi specifically intended his device to be used on diesel engines. His patent of 1905 noted the efficiency improvements that a turbocharger could bring to diesel engines which in 1922 had first been developed for use in road transportation.

At the time metal and bearing technology was not sufficiently advanced to allow a practical turbocharger to be built. The first practical turbodiesels were marine engines fitted to two German passenger liners- the Danzig and the Preussen in 1923, each having two 10-cylinder engines of 2,500 horsepower (the naturally aspirated versions of the same engine produced 1,750 HP). By the late 1920s several diesel engine builders were making large turbodiesels for marine and stationary use such as Sulzer Bros., MAN, Daimler-Benz and Paxman.

Turbocharger technology was improved greatly by developments during World War II and subsequent development of the gas turbine. It was now possible to use smaller turbochargers on smaller, higher-speed engines. Diesel locomotives with turbodiesels began appearing in the late 1940s and 1950s.

In 1951 MAN presented a turbocharged version of their MK26 truck, although it was never put into mass production. Series production of turbocharged diesel trucks commenced in 1954, when both MAN 750TL1 and Volvo Titan Turbo were introduced to the markets. The building of the Interstate Highway System in USA from 1956, made long-distance road transportation of goods more attractive and to keep up with general traffic more powerful engines came in increasing demand: Cummins, Detroit and CAT all had turbo-charging as an option by the late-1960s. In Europe, legislation was introduced in Germany mandating a minimum power-to-weight ratio for trucks; by the late 1960s a 38-tonne consist had to have at least 304 hp. Most manufacturers met these requirement with large-displacement natural aspiration engines, some with the option of large-displacement or turbo-charging, while Scania and Volvo where among those that only provided turbocharged trucks that met the demands. Turbo-charging was not preferred initially as the engines was perceived to be less reliable, but the method won a decisive victory by the mid-1970s as the 1973 oil crisis increased fuel costs. The last market to see the absolute penetration of turbo diesels was Japan, where legislation on particle emissions effectively mandated natural aspiration engines until effective particle filters became available.

Experiments with smaller turbodiesels of a size suitable for an automobile were carried out in the 1960s, the Rover Company (already a builder of industrial gas turbines) built experimental an 2.5 liter 4-cylinder turbodiesels (including versions with an intercooler) in 1963. The vehicles, however, were not put the design into production. The first turbodiesel production car was the Mercedes-Benz 300SD (series W116, engine OM617.950), introduced in May 1978, the first turbo-diesel Formula 1 racing car, a Renault 1,492 V^ producing 510 bhp having appeared in 1977. It used a Garrett AiResearch turbocharger, and was produced only for the United States. In Europe, the first turbodiesel was the Peugeot 604 in early 1979 (model year 1978). Turbodiesel cars began to be widely built and sold in Europe during the late 1980s and early 1990s, a trend that has continued to the present day.