To provide a fuel injection control device enabling knocking inhibition while inhibiting deterioration of fuel economy due to retardation of ignition timing.
This device is applied to an internal combustion engine having a plurality of intake ports formed for one combustion chamber and equipped with a fuel injection valve for each of the plurality of intake ports, and includes injection quantity ratio control means S11, S14, S15 controlling injection quantity ratios R1, R2 which are ratios of injection quantities of the plurality of fuel injection valves based on an operation state of the internal combustion engine, and a knocking detection means S12 detecting existence of occurrence of knocking in the internal combustion engine. The injection quantity ratio control means variably controls the injection quantity ratios R1, R2 according to detection result by the knocking detection means S12.
| JP3787834 | CONTROL DEVICE FOR DIRECT INJECTION ENGINE |
| JP2006037944 | STROKE DISCRIMINATION DEVICE OF FOUR-STROKE CYCLE ENGINE |
| WO/2024/089440 | FOUR-STROKE GASEOUS FUEL ENGINE |
Yasunari Kurita
Kyoko Hino
Satoru Ando
Hiroshi Matsuda