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More complex dry-sump systems may scavenge oil from other areas where oil may pool, such as in the valvetrain. Power can be further increased if the dry-sump system is designed to create a vacuum inside the crankcase, which reduces air drag (or 'windage') on moving parts as well. Improved pump efficiency to maintain oil supply to the engine.
Dry sumps also allow for more power because they reduce the amount of windage, oil sloshing up into the rotating assembly, and the vacuum from the scavenge pump improves ring seal. [10] Dry sumps are more popular in racing applications because of the improved power and reduced oil sloshing that would otherwise reduce oil pressure.
Dry weight: 1,220 kg (2,690 lb) dry; Components. ... Oil system: Dry sump with gear pressure and scavenge pumps at 240–310 kilopascals (35–45 psi) Performance.
The oil scavenge and pressure pumps for the dry sump system were moved from their position below the crankshaft in the MS9, to the front of the crankcase below the water pump. This had the benefit of reducing the height of the engine assembly. [ 3 ]
Often though, oil in the sump can slosh during hard cornering, starving the oil pump. For these reasons, racing motorcycles and piston aircraft engines are "dry sumped" using scavenge pumps and a swirl tank to separate oil from air, which is also sucked up by the pumps. [2] A sump can also be found in an aquarium, mainly a reef system.
Oil system: pressure feed, dry sump with scavenge, cooling and filtration; Performance. Maximum power output: 750 shp, with 1,250 lb (570 kg) residual thrust; See also
Oil system: dry sump with single pressure and scavenge pump shaft driven off crankshaft bevel gear. Cooling system: water-cooled, pump shaft driven off crankshaft bevel gear. Reduction gear: 0.743 or 0.512; compressed air starter
Oil system: Dry sump, gear pump at 65 psi (4.5 bar) with scavenge pump; MIL-O-6081A Performance Maximum power output: 2,550 shp (1,900 kW) + 415 lbf (1.85 kN) for take-off at 14,300 rpm at sea level (2,750 shp (2,050 kW) equivalent)