Diesel engines for land and marine work . nd are actuated by means of a rocking lever fromthe connecting rod of the low pressure pump. The method is illustrated in Fig. 99, in which boththe high and intermediate stages of the three-stage compres-sor set are mounted in front of the scavenge cylinder. Thedrive is arranged from a crank fixed to the main crank shaft,and as is seen from the illustration, the piston of the forms the crosshead of the scavenge pump. Thegeneral arrangement is evident from the diagram and neednot be further explained. The scavenge pump is controlledby a piston
Diesel engines for land and marine work . nd are actuated by means of a rocking lever fromthe connecting rod of the low pressure pump. The method is illustrated in Fig. 99, in which boththe high and intermediate stages of the three-stage compres-sor set are mounted in front of the scavenge cylinder. Thedrive is arranged from a crank fixed to the main crank shaft,and as is seen from the illustration, the piston of the forms the crosshead of the scavenge pump. Thegeneral arrangement is evident from the diagram and neednot be further explained. The scavenge pump is controlledby a piston valve as seen in Fig. 98, and the gear on theextreme left shows the Stephenson link motion for reversingthe delivery of the scavenge air when the engine is reversed. Fig. 100 shows diagrammatically the method adoptedfor the supply of scavenge air to the engine cj^ are provided at the bottom for the discharge of theexhaust gases, as in all two-cycle engines, these extendingonly haK-way round the periphery and being represented. Fig. 99.—Arrangement of Scavengo Pump and Air Compressor with Sulzer Marine Engine. 217
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