Mounting system for a resonating needle injection device

A system for installation of a fuel injector on an engine cylinder head, the system comprising:

• the fuel injector, the fuel injector including:
• a tubular body;
• an injector nose prolonging the tubular body;
• a needle extending coaxially to the nose in a shape of a rod and whose one end includes a head forming a valve on a seat carried by the injector nose;
• an actuator configured to cause a displacement of the head to open the valve;
• wherein the needle is configured to enter into axial resonance when subjected by the actuator to axial impulses at a given nominal frequency;
• a brace configured to bear against one surface of the cylinder head and to bear against a front surface of the tubular body at a connection to the nose;
• and
• a flange configured to be attached to the cylinder head and flattening the tubular body against the brace by bearing against a clamping shoulder,
• wherein the brace and a portion of the tubular body between the clamping shoulder and the front surface have such lengths that a time of propagation of a sound wave in the portion of the tubular body between the clamping shoulder and the front surface, added to a time of propagation in the brace, is a multiple of one half-period of the nominal frequency.