Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2007-11-20
2007-11-20
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S456000
Reexamination Certificate
active
11360913
ABSTRACT:
An accumulator fuel injection system has fuel pressure pulsation in a common rail caused by fuel injection suppressed in an extremely simple way with a low cost system and without using an electronic control device and so on. The accumulator fuel injection system supplies high pressure fuel accumulated in an accumulating room of the common rail through high pressure fuel outlets provided equally spaced along the longitudinal direction of the common rail to a fuel injection valve of each cylinder at predetermined injection timing. The distance from an end of the accumulating room, from where a pressure wave generated therein is reflected, to a high pressure fuel outlet adjacent to the end (L1or L2) is determined in a range of (N+0.25) times to (N+0.375) times the pitch length L of the equally spaced high pressure fuel outlets each corresponding to each cylinder, N being a nonnegative integer.
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Gimie Mahmoud
Mitsubishi Heavy Industries Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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