The ratio of the actual weight of air induced by the engine in the intake stroke to the theoretical weight of air that should have been induced due to piston displacement at intake temperature and pressure is known as ___________

Internal Combustion Engine topics include: IC engine components and working, 2-stroke and 4-stroke engines working principles, comparision between diesel and petrol engine, heat engine types, engine power terminology, comparision between 4-stroke and 2-stroke engines.