Cummins L-series engine

Common card · No. 434963

Cummins has used the designation L for several engines, some of which are of unrelated design. The Cummins L-series engine is a straight-six diesel engine designed and produced by Cummins. It displaces 8.9 litres (543.1 cu in), and began production in 1982 as the L10 at the Jamestown Engine Plant in Jamestown, New York. After lengthening its stroke from 136 to 147 mm, its displacement was enlarged to 10.8 litres and the engine renamed M11, later ISM. The ISL 9 and L9 engines are not related to the L10 engine, but instead based on the smaller C-series engine, with the 135 mm stroke of the C8.3 enlarged to 144.5 mm, together with 4 valves per cylinder, giving it 8.9 litres displacement. The L10 displaces 10.0 litres (610.2 cu in), and was available in either a vertical form, for upright use in trucks and buses, or horizontal form, for underfloor use in buses and trains. The L10 was Cummins's first competitive offering in the British bus market, as their earlier production had been too large...

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