Oil pans fitted in the 12.8-liter Euro 6 engines for the Mercedes Actros from Daimler boast impressive dimensions of up to 120 cm long, 40 cm wide and 35 cm deep. To date, they are the largest engine oil pans for trucks to be made of polyamide (PA) 6 and 66.
They are manufactured by BBP Kunststoffwerk Marbach Baier GmbH (Marbach, Germany) using Durethan from Lanxess (Leverkusen, Germany). "We used a series of calculations and simulations to confirm the feasibility of the oil pans in advance, thus helping to ensure that the pans could be designed on the computer properly and cost-effectively over a relatively short development period," explains Frank Krause, a Lanxess expert for oil-carrying engine parts made of plastic.
In this particular application, polyamide offers an alternative to aluminum, sheet steel and sheet molding compounds (SMC). It produces far lighter components than die-cast aluminum, for example. What's more, polyamide components made using injection molding processes are ready for use straight away. In contrast, die-cast and SMC parts often have to undergo laborious and costly additional processing in order to remove burring, for example....