Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2005-08-16
2005-08-16
Moulis, Thomas (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S468000
Reexamination Certificate
active
06928984
ABSTRACT:
High pressure fluid systems, such as those found in common rail fuel systems for engines, often need a low pressure containment system to appropriately address the possibility of fuel leakage around the engine. In addition, such high pressure systems also often require flow to go from one location, such as the common rail, to another location, such as a fuel injector, while undergoing a direction change because of spacial constraints around the engine. The present invention utilizes an elbow component with valve surfaces on its two faces that are oriented at about 90° with respect to one another. When the elbow component is fastened to the head with first fasteners and fastened to a flow limiter housing in another direction with second fasteners, a quill tube is compressed between the valve surface on the elbow component and a similar conical seat on a fuel injector in one direction while also compressing a short tube and flow limiter between the other valve surface of the elbow component and the common rail. The low pressure containment system is sealed with O-rings. The high pressure connection can be serviced without dismantling other engine components.
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Ritter Albrecht M.
Shamine David M.
Caterpillar Inc.
Liell & McNeil
Moulis Thomas
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