CHAPTER XXV 



GAS ENGINES 



Gasoline-, gas-, and oil-burning engines are called internal 

 combustion engines in order that they may be distinguished 

 from the steam engines, which also utilize the expansive 



5park plug 

 /a/ve cap 



Combustion 

 space 



Jnlet ya/ve 



/ntoke 



maniro/d- 

 Pis fan rings 



IVafer connect/on 

 Priming cup 

 /a/re cap 

 Woterjocket 

 Cylinder 

 exhaust va/re 

 ■Exhaust manifo/d 



Valveguide 



/ofve spring 

 Vo/ve-spring refamer 

 Spring-retainer pin 

 Adjusting screw 

 Lock nut 



Push rod 

 Push-rod guide 

 Magneto 

 Distributor 

 Timer 

 IVaterpump 

 Goffer 

 Exhousf-va/re cam 



/io/f-fime gears 

 Connecting rod 



Id/ergears 

 Crank 

 Dip pan 



Oii 'we// 

 Oil 'gauge 

 Float 



Fig. 382. "T"-head gasoline motor showing all parts 



power of heat, but which have the actual combustion taking 

 place in a fire box under a boiler, separate and away from the 



493 



