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Detroit christens medium engine the Fuel Pincher
Page 24
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A NEW four-stroke V8 diesel engine from the Detroit Diesel Allison division of General Motors Corporation was announced at the Frankfurt Show last week. Claimed to be of completely new design, the engine has a capacity of 8.2 litres (500cuin) with bore and stroke dimensions of 108mm (4.25in) and 112mm (4.411n).
The engine will be available in the United States from January 1980 in both naturally aspirated and turbocharged form and it should make its first appearance in Europe some two years later.
Named the "Fuel Pincher" by GM because of its good fuel economy, the V8 was designed to compete with petrol engines. used in American mediumweight trucks with gross weights ranging from 41/2 to 221/2 tons. However, the manufacturer expected the engine also to compare favourably with European diesel engines of similar power when the necessary revisions in combustion, through turbocharging and timing are made.
The turbocharged version to be sold in America is rated at 153kW (205bhp) while ti naturally aspirated versic develops 123kW (165bhp) the horsepower figures giv( are to the SAE standard). Bo engines are rated at 3000 rpn A lower governed speed 2800 rpm will be used for ti export engine, rated at 11910 (160bhp). GM says that turbocharged version of a export engine will be availab for altitudes above 12( metres (4000ft). Common to E the "Fuel Pincher" engines a GM's patented unit fuel inje tors operated by a single ce tral camshaft — similar to tl Cummins PT system.