Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2011-08-16
2011-08-16
Solis, Erick (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C701S107000, C123S479000
Reexamination Certificate
active
07997253
ABSTRACT:
A method for controlling the overpressure in a fuel-supply system of a common-rail type for an internal-combustion engine provided with a number of cylinders; the method has the steps of: supplying fuel under pressure to a common rail connected to a number of injectors by means of a high-pressure pump; detecting the effective value of the pressure of the fuel within the common rail; comparing the effective value of the pressure of the fuel within the common rail with a safety value; determining a condition of emergency if the effective value of the pressure of the fuel within the common rail is higher than the safety value; and driving, in the case of emergency, the injectors for discharging part of the fuel present in the common rail so as to contain the increase in pressure of the fuel within the common rail.
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Etschmann, European Search Report for EP 07 42 5416, 3 pp., Jan. 18, 2008.
Ausiello Francesco Paolo
De Cesare Matteo
Serra Gabriele
Klarquist & Sparkman, LLP
Magneti Marelli Powertrain S.p.A.
Solis Erick
Vilakazi Sizo B
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