Revolution in Fuel Injection

24th September 1954, Page 86

24th September 1954

Page 86

Page 86, 24th September 1954 — Revolution in Fuel Injection

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A SIMPLE fuel-injection system for ritoil engines has been developed by the Cummins Engine Co., Inc., of America, and is now fitted to all their engines. The new system eliminates the conventional fuel-injection pump with its plungers, spring-loaded valves and high-pressure lines, and is easily understood by mechanics without specialized knowledge.

The P.T. (pressure-time) system, as it is known, consists of a gear pump, which combines a pressure regulator and operating controls, and an injector in each cylinder. The pump delivers fuel to a common manifold, its pressure being controlled by the regulator according to torque and horsepower characteristics, and from the manifold it is passed into the injectors.

Injection begins when a plunger in each inlector is operated by the engine camshaft. The common manifold ensures that equal charges of fuel at the same pressure are injected into each cylinder.

Timing of the pump to the engine is eliminated, because injection is controlled by the engine camshaft. The equipment weighs only 13 lb., as compared to 104 lb. for the earlier design, and Occupies 13 per cent. of the space previously required for the Cummins distributor pump.

WISHED TO AWARD COSTS " IT is a great pity that no discretion is was placed upon the chairmen of the Licensing Authority in the statutes to award costs in certain cases. I would without hesitation award costs in this case."

This observation was made by the Northern Licensing Authority at Carlisle last week, when he. the clerk. the shorthand-writer, the objectors and their solicitor appeared in court, although the applicant in the case concerned did not.

Mr. F. Armstrong, Kirkgate, Cockermouth, applied for a B licence for two vehicles. but 20 minutes before the hearing was due to start be sent a telegram asking for an adjournment as he was unable to attend.

The Authority said that a number of people had been inconvenienced. He dismissed the application.

APPEAL FOR CO-ORDINATION

APPEAL FOR CO-ORDINATION NY kind of co-ordination by tri• Glasgow Corporation, road users and the railways to relieve traffic congestion in the city would be welcomed, said the Scottish Licensing Authority

at a hearing in Glasgow last week, He made this reference when he granted an application by the corpora

tion to run a school-bus service. He said that congestion presented a big problem.