The internal combustion engine; being a text book on gas, oil and petrol engines, for the use of students and engineers (1909)
Wimperis, Harry Egerton, 1876- · New York, Van Nostrand · leaf 148
o enable one motor cylinderto give an impulse at every revolution. In the Otto cyclethere is only one impulse for two revolutions, so far as themain cylinder is concerned. The Clerk engine gave oneimpulse for every revolution of the main crank in the maincylinder, but to make that possible it was… … 128 THE INTERNAL COMBUSTION ENGINE frequently, that is to say, two impulses per revolution,obtained by making the engine double-acting. The objectwas to get very much more power for a given weight ofengine, as the pump was light and only required to dealwith its charge at a low pressure. In…
Internal combustion engines
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