TESTS OF DRAINAGE PUMPING PLANTS. 



45 



compound condensing Corliss engine. Plant No. 7 has a compound 

 condensing poppet-valve engine using superheated steam. Plants 

 Xos. 8, 9, 10. 11, and 12 are alike in having internal-combustion 

 engines. Xo. 9 uses kerosene as fuel, while the others may use 

 distillate or kerosene. Thev are all 4-cycle engines. Plants Nos. 13 



4 5 6 



Lifhnfeef 

 Fig 5, Pounds of oil required by different types of engine to pump against various llfl 



;irnl li have hot-bulb ignition and operate on the l-stroke cycle; 

 they use a fairly \<>\\ grade of fuel oil. Hants Nos. L5, L6, 17, is, mid 

 1 9 have 2-cycle oil engines with hot-bulb ignition. Planl No. 20 

 has 2-cycle Diesel engines u ing a low grade <>f fuel oil. Plants Nos. 

 21 nrid 22 are electrically driven. 



