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AssigneeC.R.F. Societa Consortile per Azioni
InventorsMario Ricco, Adriano Gorgoglione, Raffaele Ricco, Sergio Stucchi
Estimating the term…
The injection system comprises a high-pressure pump (7) with variable flowrate, having a number of pumping elements (18) actuated with reciprocating motion and provided each with a corresponding intake valve (22). An accumulation volume (28) is supplied with fuel at low pressure from an intake pipe (10) of the pump (7) through a solenoid valve (31) controlled as a function of the operating conditions of the engine (2). The accumulation volume (28) is in communication with the intake valves (22) through corresponding outlet holes (29), and the solenoid valve (31) is provided with nebulizer holes (36) such as to generate corresponding jets of fuel, each directed towards at least one of said outlet holes (29).
A fuel-injection system for an internal-combustion engine, comprising a high-pressure pump (7) with variable flowrate, having a number of pumping elements (18) actuated with reciprocating motion through intake and delivery strokes, each of said pumping elements (18) being provided with a corresponding intake valve (22);
The injection system according to any one of the preceding claims, characterized in that said solenoid valve (31) is controlled asynchronously with respect to said intake strokes as a function of the operating conditions of the engine by a control unit (14), by means of control signals (A, C) modulated in frequency and/or in duty-cycle as a function of the operating conditions of the engine (2).
Dependencies are inferred from the claim text.