Abstract
When designing a cylinder head for two families of stationary, air-cooled, direct-injection diesel engines to drive electric current generators or water pumps in the construction industry, we must take into account the following aspects: BMEP, which is limited in these engines at values of 3.8-5.2 bar. The paper presents the optimal solution found in the functional analysis performed for a FLUENT program with a single-cylinder engine and a family of two-cylinder engines, considering each cooling air flow case. Another aspect to consider when designing cylinder heads is to determine the thermal regimes of the cylinder head, piston, cylinder, valves and nozzle, to define the development of heat per engine work cycle. The objectives of this paper are to define optimal construction solutions for a cylinder head for a direct injection air-cooled Diesel engine having a stroke of 65 mm and a bore of 82 mm.