A practical treatise on modern gas and oil engines (1902)
Grover, Frederick · Manchester, The Technical Publishing Co., Limited; [etc., etc.] · leaf 20
rance space communicating with the port L before itreaches I. Through this passage the compressed gas findsits way in very small quantities into L, raises the pressurein L, and maintains the combustion by the additional supplyof air and gas. The passage through which this com-munication is made is… … Fig. 1.—Sectional plan of Otto gas engine. The piston is now driven forward by the explosion. Theflywheels carry the piston back, driving the burnt gases outthrough D. It will be observed that an impulse is onlygiven every two revolutions of the engine ; hence thenecessity for exceedingly heavy…
Internal combustion engines
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