ENGINE FRICTION — A CHANGE IN EMPHASIS: A new approach which may result in significant fuel consumption gains

Engine friction will continue to affect the efficiency of vehicle power plants as long as we have vehicles that use their own prime movers. A consequence of this, of course, is the fact that the truly “adiabatic” power plant needs rather more than an insulated combustion chamber. What is not so certain is the extent to which engine friction could be reduced and whether that reduction when achieved is worth all the effort.