A practical treatise on modern gas and oil engines (1902)
Grover, Frederick · Manchester, The Technical Publishing Co., Limited; [etc., etc.] · leaf 88
TYPES OF GAS EXGIXES. 77 The ignitions of the charges are effected electrically bymeans of the sparker F. This has two pairs of sparkingpoints, one pair being reserved for emergency. Should thesparker in action suddenly fail, the other pair may be at onceswitched in. The time at which the spark… … Fig 63. by a cam on the shaft B. The current is supplied from aninduction coil, and its direction of flow is easily reversible.In fact at each stop and start of the engine, the direction ofthe flow is automatically reversed by the action of switchingoff and on the coils. The object of this…
Internal combustion engines
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