Method for controlling compression ignition internal combustion engine

Abstract

The invention provides a method for controlling a compression ignition internal combustion engine, which can easily deal with a wide range of demand loads with a single fuel. The compression ignition internal combustion engine includes a fuel containing an ignition improver, and as the demand load increases, part of the ignition improver contained in the fuel is changed into a material having a reduced ignitability improvement capability, and the fuel having reduced ignitability is supplied to the compression ignition internal combustion engine. A fuel having part of the ignition improver changed into a material having a reduced ignitability improvement capability, and thus having reduced ignitability, and a fuel with the ignitability improvement capability of the ignition improver maintained are mixed together in any ratio, and supplied to the compression ignition internal combustion engine.

Dependencies are inferred from the claim text.