Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2005-06-07
2005-06-07
Lo, Weilun (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S467000
Reexamination Certificate
active
06901913
ABSTRACT:
A fuel pressure pulsation suppressing system of a fuel piping system for a gasoline engine having a plurality of cylinders disposed in a straight, V-shape or horizontal opposed shape with delivery pipes for distributing fuel to the cylinders of return-less type without a return circuit to a fuel tank, wherein the cross section of at least one of communication pipes forming the delivery pipes forms a flexible absorbing face, an orifice portion for damping pressure pulse wave caused by fuel injection is installed near a connection part between at least one delivery pipe and a supply pipe or a connection pipe, and the cross sectional area of the flow passage of the orifice should desirably be 0.2 times the sectional area of the flow passage of the connection pipe or the supply pipe or below.
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Imura Izumi
Mizuno Kazuteru
Nishizawa Hiroyuki
Ogata Tetsuo
Serizawa Yoshiyuki
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