Dual fuel injector feed using differential length quills

摘要

A duel fuel quill assembly and method for assembling such an assembly for an engine are disclosed. The dual fuel quill assembly may comprise a cylinder head including a main bore and a receiving cavity, an outer quill tube, an inner quill tube nested within the outer quill tube, an adapter slidingly received inside the main bore of the cylinder head, and a manifold secured to the adapter. The adapter may be moveable between a first position and a second position and may define an axial bore configured to receive the outer quill tube and the nested inner quill tube. The manifold may define a recess configured to compress the outer and inner quill tubes against the cylinder head cavity when the adapter is in the second position.

主权项

1. A dual fluid quill assembly comprising:
a first quill tube of a first length; a second quill tube of a second length, the second quill tube nested within the first quill tube, wherein the second length is different than the first length; an adapter defining an axial bore configured to receive the first quill tube and the nested second quill tube; and a manifold adjacent to the adapter, the manifold including a sealing surface sealingly engaged with a first end of the first quill tube and a first end of the second quill tube, the sealing surface applying a first sealing contact force to the first end of the first quill tube and a second sealing contact force to a first end of the second quill tube, wherein the first sealing contact force is different than the second sealing contact force.