Patent Number: 6,308,682

Title: Gasoline internal combustion engine

Abstract: A spark ignition gasoline internal combustion engine separates a gasoline fuel supply into a higher boiling point fraction and a lower boiling point fraction, supplies the boiling point fractions to combustion chambers of the engine, and introduces the separate boiling point fractions into the combustion chambers to produce a stratified charge with the different fractions residing in different parts of the combustion chamber. In accordance with a preferred embodiment, charge stratification under "full load" operating conditions is such that in each combustion chamber the lower boiling point fraction is ignited by a spark plug, which in turn produces a propagating flame that ignites the higher boiling point fraction concentrated in the end gas regions of the combustion chamber.

Inventors: Ma; Thomas Tsoi Hei (Essex, GB)

Assignee: Ford Global Technologies, Inc.

International Classification: F02B 17/00 (20060101); F02B 017/00 ()

Expiration Date: 10/30/2018