US PATENT NUMBER: 3,987,773
INVENTORS: Harrow; Geoffrey A. (Wirral, EN); Mills; Walter D. (Mold, EN); Wilson; John L. (East Kilbride, Glasgow, SC); Finlay; Ian C. (Newton Mearns, Glasgow, SC)
ASIGNEE: Shell Oil Company (Houston, TX)
The conventional spark-ignition gasoline engine relies on a carburetter to mix a desired proportion of a volatile fuel with the inlet air. For complete combustion of the fuel-air mixture the fuel needs to be uniformly dispersed in the air. Such a uniform mixture is seldom if ever obtained in practice with a conventional carburetter, and manifold fuel injection offers only marginal improvement.
In the fuel-air mixtures obtained with these conventional techniques the fuel is at least partly present in the form of small liquid droplets, and as a film of liquid on the walls of the manifold.
It has been proposed to supply, with the aid of a heat pipe, at a substantially constant temperature sufficient heat to vaporize the entire liquid fuel charge prior to mixing it with the major part of the combustion air, in order to obtain a uniform mixture of fuel and air. Backflowing of evaporated fuel in the air supply ducts, and condensation of the evaporated fuel in the air supply ducts was experienced in a number of cases. This is considered to be a drawback of the said method, because in the said cases no uniform air-fuel mixture will be achieved.
The invention provides a device in which the said drawback has been overcome.
Ignore the man behind the curtian.
