GB276281A - Improvement in oil testing apparatus for motor vehicles - Google Patents

Abstract

276,281. Mason, F. B. May 9, 1927. Testing lubricating efficiency of liquids.-Apparatus for comparison of oils comprises a container for a standard liquid, a container for the liquid to be tested each communicating with a corresponding receptacle for the liquids and means whereby the liquids are caused to flow under like conditions from the receptacles to the containers and vice versa for the purpose of observing the rates of flow. Containers 14, 23 provided with gauge glasses 10, 11 are fitted with floats 15, ending in valves 17, finding seatings in the necks of the vessels which communicate by pipes 30, 34 with aT-piece 31 m which is a three-way valve. The lower ends of the containers are connected by pipes 38, 43 with a receptacle 39 separate from but integral with the crank case, and with the crank case respectively. In the lower ends of each container is located a neck in which is bored a standard hole. By-pass pipes 45, 47 connect the pipes 38, 43 with the tops of the containers. Normally, the valve 35 is turned so that pipes 30, 34 are open to the atmosphere. In use, the valve 35 is turned to close the pipes 30, 34 to the atmosphere and open them to the pipe 32 and hence to the vacuum spaces of the engine cylinder. Oil from the crank case rises in the container 23, and from the standard oil receptacle 39 on the container 14 until the floats rise and the valves 16 close. The three-way valve is now turned to open the pipes 30, 34 to the atmosphere and the liquids are allowed to run back into the receptacle. The comparative rates of flow as observed in the gauge glasses afford an indication as to whether the oil in the crank case should be changed. The receptacle 39 is positioned in the crank case to observe similar temperature conditions for both liquids. A vent will be necessary for the chamber 39 and in some cases for the crank case.