Abstract: The present invention relates to an improvement in a capillary tube viscometer which includes light sensitive triggering means for timing the flow of oil between two points therein. The improvement includes optic fibers that are positioned on the tube at selected places. In addition, the tube includes impulse receiving means wherein the voltage received from start and stop positions are passed to triggering means and measuring means to translate the same into figures for manual or automatic calculation of time for the flow of oil.

Abstract: The invention relates to a method and apparatus for reducing the amount of undesirable products of combustion which are discharged to the atmosphere from an internal combustion engine during operation of the latter. The apparatus comprises, means for segregating a portion of an exhaust gas stream from the engine's exhaust discharge manifold or valve. The hot exhaust gas segment is cooled, combined with air to form a preliminary mixture, and delivered to the engine's combustion chambers. A predetermined volume of fuel is injected into the combustion chamber whereby to intermix with a portion of the preliminary mixture in such a manner that at least a part of the latter becomes combustible.The apparatus for achieving the method comprises, means for recycling said segment of said hot exhaust gas. It further comprises means for controllably regulating the flow of the latter in response to the load variations imposed on the engine.

Abstract: The invention relates to a method and apparatus for reducing the amount of undesirable products of combustion which are discharged to the atmosphere from an internal combustion engine during operation of the latter. The apparatus comprises, means for segregating a portion of an exhaust gas stream from the engine's exhaust discharge manifold or valve. The hot exhaust gas segment is cooled, combined with air to form a preliminary mixture, and delivered to the engine's combustion chambers. A predetermined volume of fuel is injected into the combustion chamber whereby to intermix with a portion of the preliminary mixture in such a manner that at least a part of the latter becomes combustible.The apparatus for achieving the method comprises, means for recycling said segment of said hot exhaust gas. It further comprises means for controllably regulating the flow of the latter in response to the load variations imposed on the engine.