| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection controller promoting atomization of an injection fuel of an internal combustion engine. <P>SOLUTION: An engine system 1 includes: an injector 21 injecting and supplying a fuel to a combustion chamber 11; an ultrasonic vibrator 218 which is disposed in a cylindrical form on a wall face of a fuel passage 213 near a fuel injection hole 212 inside the injector 21 and which imparts predetermined ultrasonic vibration to the fuel in the fuel passage 213; an ultrasonic driver 22 which causes the ultrasonic vibrator 218 to impart ultrasonic vibration to the fuel during a single fuel injection carried out by the injector 21, in a predetermined period from starting the fuel injection and in a predetermined period before finishing the fuel injection; and an engine ECU 10. The system can produce a large amount of fine bubbles in the fuel before being injected and quickly crush the fine bubbles after injection of the fuel. Thereby, atomization of the injection fuel of the internal combustion engine can be promoted by using the crushing energy of fine bubbles in the fuel. <P>COPYRIGHT: (C)2012,JPO&INPIT |
