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Patent

Lubrication and cooling system for connecting rod and piston

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TLDR
In this article, a system for lubricating a connecting rod and cooling the underside of a piston of an internal combustion engine is described, which is similar to the one described in this paper.
Abstract
A lubricating and cooling system for lubricating a connecting rod and cooling the underside of a piston of an internal combustion engine.

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Patent

Fluid delivery system and flow control therefor

TL;DR: A flow sensor associated with an administration tube provides an indication of the actual flow rate of fluid in the administration tube as discussed by the authors, which can also be used for providing status information, such as the existence of a blockage in the fluid delivery system.
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Crankshaft with lubrication passages

TL;DR: In this paper, a crankshaft for a V-type engine comprises an intermediate main journal which is rotatably supported in a main bearing, a primary crankpin, a pair of crankarms, and a second crankpin.
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Piston oil-cooling device in an engine

TL;DR: In this paper, a piston is reliably cooled from its backside by using an oil for lubricating portions around a crank pin of a crankshaft, and a pair of cooling oil injection grooves each have one end connected to the annular oil passage and the other end directed to a piston while they are provided proximate to each other.
Patent

Connecting rod structure

TL;DR: In this article, a connecting rod has formed therethrough at least one hole which provides a lubrication path to an interface between the connecting rod and piston conjunction point, and the connecting rods extend between to connect the piston and the crankshaft.
Patent

Piston cooling and/or small-end bearing lubrication arrangement for i.c.engines

Moss H Barnes
TL;DR: In a piston-type internal combustion engine, each crankpin has a main lubrication hole in the lower half of the crankpin surface and an auxiliary lubricationhole in the leading quadrant, ahead of the top-dead-centre point and axially offset with the main hole, both holes communicating with the pressurized lubrication system.