Air induction system for IC engines - has main induction pipes joined by auxiliary pipe to superimpose spiral air flow

摘要

The engine is provided with inlet pipes in the cylinder head to feed the respective cylinders combustion air. The inlet pipes have a rectangular cross section a the front ends which change over to the spiral shape to impart a circular motion to the air. Each adjoining inlet pipe has an auxiliary induction pipe which joins the pairs together. The auxiliary pipe joins the main pipes eccentre to the front half of the main pipe. The auxiliary pipe produces a spiral air flow which is super imposed upon the main air flow. A reduction in harmful exhaust gas content is claimed.