Characterisation of Ricardo Hydra Engine

Ring Pack

Residence Time 60 ± 15 seconds

Volume of Oil 0.30 ± 0.08 cm3

Temperature 200 °C

Flow Rates

Into Ring Pack 0.32 ± 0.02 cm3 min-1

Returning to Sump 0.27 ± 0.01 cm3 min-1

Loss From Ring Pack 0.05 cm3 min-1

Sump

Residence Time 156 ± 8 hours

Volume 3 litres

Temperature 70 °C

Conditions: 1500 rpm, 50% Throttle