284 



Mr. Dugald Cierk 



[Jan. 29, 



Fiir. 13 «hows in section the 9 by 17 inches engine, and Fig. 1-i is 

 a right-angle card from which the time of explosion has been 

 determined. In this engine the flame travels 10 inches from the 

 igniting plug to the piston. 



±•16. 13. - Sections of " E, " Engine. (National Gas Engine Co., Ltd. 

 Institution of Civil Engineers' Committee Tests. 



And Out CtMTUt 



M* SO' to' 30' 20' 10' O' 10' 20' 3<f 40' iO° «(f 70° 



Fig. 14. — Diagram 90^ out of Phase. 

 9" dia. X 17" stroke engine. Period of explosion, 30" crank axle. 



