Design and manufacture camshaft for otto cycle modification to reducing fuel consumption
International Journal of Development Research
Design and manufacture camshaft for otto cycle modification to reducing fuel consumption
Received 20th September, 2017; Received in revised form 10th October, 2017; Accepted 15th November, 2017; Published online 29th December, 2017
Copyright ©2017, Prihantoro, C. Rudy and Tri Noviyanto. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Goal of the research is creating a concept for otto cycle modification with changes valve mechanism system. Overall otto cycle modification concept is same four strokes engine standart. In diferent at last strokes (exhaust strokes), exhaust valve keep be opened (intake valve is not opened) then exhaust gas is entered again for be compressed and be burned again. At of the calculation and simulation result in this research activity with application otto cycle modification concept have to changes timing gear ratio (crankshaft : camshaft). Timing gear ratio be changed from 1 : 2 to be 1 : 4 and changes cam profile design with angular displacement is 45° each stroke. Then be resulted cam separation angle at intake cam (L.in) with first exhaust cam (L.ex1) is 137.5°, first exhaust cam (L.ex1) with second exhaust cam (L.ex2) is 157.5° and second exhaust cam (L.ex2) with intake cam (L.in) is 65°. It’s calculation be resulted from the camshaft rotation angle. Process and trial with this concept, engine can be operated suitable.
