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Altitude engine control from Fiat

2nd April 1971, Page 34
2nd April 1971
Page 34
Page 34, 2nd April 1971 — Altitude engine control from Fiat
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Which of the following most accurately describes the problem?

• Fiat has developed an electronics control device for diesel engines to take account of operation at high altitudes. When vehicles on long-distance European haulage have to cross Alpine passes—even only• occasionally—reduced fuel delivery is required to prevent overheating; this applies at altitudes between 3000 and 12,000ft and is done at the expense of power output when

near sea level. '

To overcome this problem Fiat has developed a system in .which fuel delivery is controlled according to the temperature of the exhaust gases. A thermocouple is inserted in the exhaust pipe immediately below the manifold and this controls electronic circuits operating a pneumatic device on the injection pump. When the

exhaust gas temperature reaches a predetermined level, the control device on the pump rotates a cam-type rack stop and this reduces the fuel delivery. When the exhaust temperature returns to normal the process is reversed and full fuel delivery can be obtained.

Tyre retreading show is on

• Grantham Rubber Machinery Co Ltd is to hold an exhibition of tyre retreading, repairing and servicing equipment this year, it states, contrary to an announcement made at its last show. The dates set aside are September 28, 29 and 30.

Venue and details of new equipment to be exhibited will be released later.


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