Abstract
The author of this paper gives the present status of petrol injection in the United States of America and some of the problems which have been experienced in adopting the various systems to engines for passenger cars. Three vehicle manufacturers are currently offering petrol injection on option at extra cost. Not many systems have been sold, probably owing to the very high retail price of the various systems.
A de-emphasis on horsepower has tended to reduce interest in fuel injection. Several American systems are shown and briefly described. The problem of reducing the cost of a system is discussed in terms of volume per day. Engineers are finding it difficult to match the performance of the carburettor. It has become necessary to provide ancillary equipment to the petrol injector so that carburettor performance is equal in regard to cold starting, warm-up and acceleration. Some systems have shown problems of high temperature operation.
The author is of the opinion that there is a future for petrol injection. It may take three to five years before volume production is seen. Engines may have to be designed to take full advantage of petrol injection, with less emphasis being placed on power output and more emphasis on best fuel economy.
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