Patent ID: 7249593
Filing Date: 2007-07-31
Classification: F02M

Abstract:
1. A fuel-injection system for an internal combustion engine, comprising: a fuel tank, fuel delivery means for compressing at a high pressure fuel received from said tank, a plurality of injectors for injecting said fuel at high pressure into respective combustion chambers of said engine, and a plurality of distinct storage volumes hydraulically connected with said plurality of injectors and supplied by said fuel delivery means with said fuel at high pressure; wherein each said storage volume includes an inlet connector directly supplied by said fuel delivery means, and an outlet connector directly converging into a common return line for return of the fuel coming out from each said outlet connectors to said tank; and wherein said return line is provided with a pressure regulator solenoid valve and a pressure transducer detecting the pressure of fuel in said return line upstream of said solenoid valve; a control unit being provided for controlling said solenoid valve according to the operating conditions of said engine and in response to pressure detected by said pressure transducer and so as to enable a continuous flow of the fuel through the storage volumes.