| 摘要 |
PROBLEM TO BE SOLVED: To substantially uniformize air fuel ratio of each cylinder even if a temperature gradient is generated in an engine and improve combustion stability by constituting a controller controlling a fuel injector so as to perform a control to increase fuel injection quantity for a cylinder which is lower in the temperature detected by a temperature sensor provided for every cylinder. SOLUTION: A controller 21 controlling the fuel injector of a 4-cylindered engine 2 of an outboard engine inputs the output signals of a crank angle sensor, water temperature sensors 24 to 27 detecting engine cooling water temperatures and an intake pressure sensor, etc. When fuel injection quantity is calculated, fuel injection quantity determined from conditions of the temperature of a #1 cylinder, load of an engine 2 and an engine speed, etc., is stored in the corresponding memory. Fuel injection quantity in #2 to #4 cylinders is determined by making fuel injection quantity correspond to temperature differences from the #1 cylinder and each of fuel injection quantity is stored in each corresponding memory. At this time, fuel injection quantity in each fuel injector 20 is set so as to be increased in a cylinder 8 which is lower in temperature because the temperature of the engine 2 becomes lower as the engine is closer to the entrance side of cooling water. |
