A SHELL ECO-MARATHON CONCEPT CAR ENGINE DESIGN

High-power, low weight and ease of fabrication are the key factors the young engineers consider when it comes to their participation in the annual Shell Eco-marathon competition. The competition encourages young engineers to come up with innovative vehicles that make extremely high mileage on a gallon of fuel. The competition allows for a mixed mode driving. The drivers can switch off the engines once a good acceleration has been reached and is enough to coast the vehicle. This can be repeatedly done until the race-circuit is completed. Many of the teams adapt existing engines and build aerodynamic bodies over the engine but others also want to design the engine from the scratch. In this paper, we present a simple design for 40cc engine and introduce a novel concept for an engine without an oil pump specifically suitable for this application. An overhang single cylinder IC engine with a crankshaft length 150mm with 32mm stroke and 40mm bore has been design for the Shell Eco-marathon race