Fuel consumption estimation of multi-crankshaft engine

Current automotive engine developments have been driven by improving vehicle fuel consumption. Various ideas have been explored to reduce the fuel consumption of vehicle including variable cylinder engine. The benefit is given by the pumping loss reduction but the scope to reduce mechanical pumping loss has still remained. In this paper, the estimation of fuel consumption on a multi-crankshaft engine in which a part of the seperated crankshafts is deactivated is described.