Camless combustion engine may improve ICE efficiency

A petrol powered Internal Combustion Engine (ICE) is approx 25-30% energy efficient at the flywheel and around 15% energy efficient at the wheels. There are many losses within the engine itself including friction and waste heat from the combustion process, but Sweden's Cargine Engineering thinks that eliminating the parasitic losses of the camshaft by building a camless engine may help improve energy efficiency. Using pneumatically driven actuators to shoot the valve open the camless engine concept can provide fully variable valve lift and fully variable lift duration without a camshaft in sight.

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