Development of a cost and fuel-efficient split engine

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Improving fuel economy and reducing CO2 emissions is an important issue for car and engine manufacturers. It is known that cylinder deactivation can reduce the fuel consumption of an internal combustion engine. Friction losses of the non-firing cylinders still remain.Therefore, internal combustion engines, which are mechanically divided into two individual combustion engines, promise an even higher potential in terms of fuel economy.The objective of the research project is to develop a cost-effective and fuel-efficient split-combustion engine consisting of two coupled partial combustion engines. Central connecting element is a switchable coupling for load-dependent activation of the secondary engine. Additional fuel savings can be achieved by a suitable operating strategy for the two working sub-motors and the clutch.