[4] After graduating from Hämeenlinna upper secondary school in 1946 Muronen went to study mechanical engineering in Tampere University of Technology.
[2] The most important innovation of Muronen, Vanaja's full-load lifting tandem axle system,[2] was represented in January 1957.
The vehicle was powered by turbocharged AEC AVT690 engine, 15-speed Fuller RTO915 gearbox and Muronen's hydraulically operated lifting tandem.
[2] Shortly after VAT merged with Suomen Autoteollisuus Muronen was appointed to lead the Engineering department of the new SAT organisation.
[1] After that he worked as public transport system consultant before he retired:[2] in 1982–1987 Muronen lead first Portuguese, then Saudi Arabian and finally Brazilian bus factories.
He worked for a short time as project manager in Iisalmi and supervised reorganising of production in a Greek bus factory.