This is a cut away model of a Stearns-Knight 6 cylinder sleeve valve engine that is on display at the AACA Museum in Hershey, PA. The Knight sleave valve engine uses reciprocating sleaves with ports in them rather than standard intake and exhaust valves. One main advantage of this design is that the engine ran much quieter than a poppet valve engine which is why they were given the nickname of "Silent Knight" engines. The Knight sleave valve engines were used by Stearns, Willy's, Mercedes, and other auto manufacturers. The ported sleeves worked with the piston much like the cylinder ports in a 2 cycle engine on a chainsaw, dirt bike, string trimmer, etc in the way that the intake air is drawn in through a port on one side of the piston and then pushed out the exhaust port by the piston which eliminates the need for valves to open and close the ports. But unlike in the previous mentioned 2 cycle engines, the ported sleaves of the Knight engine move up and down just like the piston. The moving of the sleeves and the piston actually produced less vibration than a standard poppet valve system, required less maintenance, and made less noise as we noted earlier. Some draw backs of the Knight sleave valve engine are that it was more expensive to manufacture, used more oil at high speeds, was harder to start in cold temps, and could struggle with heat dissipation.
This Stearns-Knight cut away engine model is on display along with Stearns automobiles and MANY other makes and models of classis, antique, and rare automobiles at the AACA Museum in Hershey, PA just minutes from Hershey Park and Hershey Chocolate World.
#StearnsKnight #SleeveValve #Antique #Engine #Auto
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