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QSK Cummins' heart of gold
Page 43
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Cummins 0SK19 engine is the next development beyond the old K19. Innovations include 'full-autho electronics and major upgrades to about 70% of the engine's components, including crankshaft. pistc and rings, liners, camshaft, cylinder head, valves and gear-train. OSK diesels also boast a high-press injection (HPI) fuel system that operates at up to 1,700 bar to maximise combustion efficiency and fue economy, while keeping emissions to a minimum. What's more, Cummins says the QSK fuel system is similar to that used on ISX and Signature engines and is, in effect, the modern descendant of the long. serving Cummins PT fuel system with vastly increased capability.
According to Cummins, it advances the old PT concept of variable pressure and constant flow time by incorporating electronic controls to precisely manage both fuel delivery and injection timing. Then stumbling block to QSK now is finding a transmission that can handle its phenomenal torque.