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Aviation History
1937
1937 - 1047.PDF
APRIL 22, 1937. ADVERTISEMENTS. FLIGHT. 17 WHY SHELL SUITS THE MOD ERN ENGINE. All motor spirit consists of atoms of hydrogen and carbon. In ordinary petrol, these atoms take the form of long chains, in which formation they combine irregularly with the oxygen from the carburettor. This produces rough running and "pinking" in the modern engine. Shell re arranges these atoms into compact groups by the "re-forming" process. In this formation they combine evenly with the oxygen. Thus combustion is controlled and pinking" prevented. Nowadays it seems almost improper for a girl to go bathing in a dress like this. It's rather like putting ordinary petrol into a modern car—it works, but not to the best advantage. Put Shell in, and you see at once how the "re-forming" process has made all the differ ence—it works, and how it works! Kindly mention "Flight" when corresponding with advertisers.
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