초록 ▼

In controlling fuel injection and ignition timing in an internal combustion engine operating on a fuel mixture, such as gasoline and methanol, consideration must be given to the mixture ratio of the fuel mixture in determining air/fuel ratio and ignition timing, as well as in controlling the atomizi

In controlling fuel injection and ignition timing in an internal combustion engine operating on a fuel mixture, such as gasoline and methanol, consideration must be given to the mixture ratio of the fuel mixture in determining air/fuel ratio and ignition timing, as well as in controlling the atomizing of the injected fuel. Fuel injection time is determined in accordance with air/fuel ratio, which is calculated in accordance with the expression A/F=14.8-0.0853P for a fuel mixture of gasoline and methanol, where P is the mixture ratio of methanol. In addition, to enhance cold start performance, a droplet size of injected fuel below 100m

대표청구항 ▼

A system for controlling an internal combustion engine operating on a fuel mixture of gasoline and methanol, comprising: a fuel sensor for detecting the mixture ratio (P) of methanol to gasoline in the fuel mixture to be supplied to said internal combustion engine; at least one fuel injector for sup

A system for controlling an internal combustion engine operating on a fuel mixture of gasoline and methanol, comprising: a fuel sensor for detecting the mixture ratio (P) of methanol to gasoline in the fuel mixture to be supplied to said internal combustion engine; at least one fuel injector for supplying a metered amount of fuel mixture at periodic intervals to a cylinder of said internal combustion engine; and a control unit for controlling said fuel injector, including: (1) means for calculating an air/fuel ratio (A/F) according to the following relationship: A/F=14.8-0.0853P (2) means for determining a fuel injector opening time period based on said calculated air/fuel ratio; and (3) means for periodically actuating said fuel injector based on said determined fuel injector opening time.