CONTROL DEVICE FOR SPARK-IGNITION ENGINE

摘要

When an engine main body (an engine (1)) is at a low temperature, that is, when the temperature of the engine main body is equal to or less than a prescribe temperature, and the load on the engine main body is equal to or greater than a prescribed load, a controller (an engine controller (100)) supplies fuel to an air cylinder (11) during a period from the intake stroke to the compression stroke. When the concentration of a special fuel in the fuel is higher than a prescribed concentration, the controller sets the amount of fuel injected by a fuel injection valve (53) during the compression stroke so as to be greater than the amount of fuel injected during an intake stroke, and when the concentration of the special fuel in the fuel is equal to or less than the prescribed concentration, the controller sets the amount of fuel injected during the intake stroke so as to be greater than the amount of fuel injected during the compression stroke.