In 1893, J & CG Bolinders Mekaniska Verkstads AB built their first combustion engine, designed by an engineer named Weyland. This was not particularly successful, so J & CG Bolinders Mekaniska Verkstads AB engaged another engineer by the name of Rundlöf as a consultant. In 1897, they presented a two-stroke crude-oil engine that was a tremendous success. In the 1920s, it had a global market share of around 80% in fishing boats. Reliability, fuel economy and long service life all contributed to its success.

Munktells Mekaniska Verkstads AB also started developing crude-oil engines. In 1913, the company presented Sweden's first tractor with an internal combustion engine. It was powered by a two-cylinder crude-oil engine that developed 30-40 hk. As a curiosity, it is worth mentioning that the cooling system in this tractor held a full 400 litres of water. The entire manufacturing apparatus was designed for rational production of efficient steam engines, but the steam engine became outdated as combustion engines were developed, and disappeared around World War I.

Swift restructuring was carried out in order to adapt Munktells Mekaniska Verkstads AB to the needs of the market. The company's entire new product programme, with tractors, road graders and motor rollers, all had Munktells Mekaniska Verkstads AB's own reliable crude-oil engine as the power source.


In addition to the machines mentioned above, Munktells Mekaniska Verkstads AB produced presses, lathes and woodworking machinery during the 1920s. This continued until 1957.

AB Bolinder-Munktell's crude-oil engines continued to be a much-favoured power source in many different contexts. Today, they are considered a wonder of reliability and fuel economy. They saw the light of day as long ago as 1897, but were still in production right up to 1953.

With the development of diesel engines, however, the crude-oil engine became out of date. AB Bolinder-Munktell concentrated on a diesel engine series of their own for their top-of-the-line tractors. In 1952, they presented a newly-developed line of diesel engines consisting of one, two, three and four-cylinder direct-injection units.