author: richard w noyes

The Effect of Valve Timing Upon the Performance of a Supercharged Engine at Altitude and an Unsupercharged Engine at Sea Level

Eastman N. Jacobs Hugh B. Freeman Hugh L. Dryden Ira H. Abbott Montgomery Knight Oscar W. Schey United States. National Advisory Committee for Aeronautics Richard W. Noyes

Aerofoils

... negative work for an unsuper- charged engine with the same valve timing . The increase in engine brake mean effective pressure when supercharging results from two separate effects : One is the reduction in friction mean effective pres ...