Book Description

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: ...placed in recesses on its upper side which are furnished to allow of adjustment when it is necessary, thus taking up the wear of the piston. For this arrangement the makers claim all the advantages of a crosshead and guide without requiring the space necessary for the crosshead design and without the additional cost in Inanufacture entailed by the use of the crosshead. The same design of piston is used on their vertical land engines also. The valve motion consists of one eccentric placed on the camshaft with suitable rods between it and the rocker arms of both air inlet and exhaust valves. This is a similar arrangement to that shown with the 2 cycle valve motion at Fig. 50. The side shaft is geared again to a crossshaft placed behind the cylinder which is furnished to operate the fuel injection valve. The air compressor for furnishing high pressure injection air is driven from the outer end of the crankshaft and is attached to the bedplate in the single cylinder engine; in the multi-cylinder type it is placed separately on the foundation. Lubrication is supplied to all bearings by a feed pump placed in the compressor crankcase which elevates the lubricant to a receptable placed above the crank cover, whence it flows to each bearing. This oil is filtered and used continuously. The piston is lubricated by a force feed pump in the usual way. In the double cylinder engine of this type the frame is cast in one piece; the valve motion consisting of eccentric and push rods is similar to that already described, only that they are extended to the valves of the second cylinder, and the crossshaft operating the fuel injection valve is also extended (see Fig. 53). In the 4 cylinder engine of the 4 cycle type two sets of two cylinders are placed side...