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GM Daewoo Euro5 Oil Pump / Balance Shaft Module Mule 1 - Design Review 27 June, 2007

GM Daewoo Euro5 Oil Pump / Balance Shaft Module Mule 1 - Design Review 27 June, 2007. OP/BSM - Front View. OP/BSM - RH View. OP/BSM - Rear View. OP/BSM - LH View. OP/BSM - Top View. OP/BSM - Bottom View. OP/BSM - Bill of Material. 13. 14. 5. 18. 1. 8. 9. 15. 12. 7. 11. 16. 6.

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GM Daewoo Euro5 Oil Pump / Balance Shaft Module Mule 1 - Design Review 27 June, 2007

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  1. GM Daewoo Euro5 Oil Pump / Balance Shaft ModuleMule 1 - Design Review27 June, 2007

  2. OP/BSM - Front View

  3. OP/BSM - RH View

  4. OP/BSM - Rear View

  5. OP/BSM - LH View

  6. OP/BSM - Top View

  7. OP/BSM - Bottom View

  8. OP/BSM - Bill of Material 13 14 5 18 1 8 9 15 12 7 11 16 6 10 17 19 3 2 4 20

  9. OP/BSM + C/S Gear - Isometric View

  10. OP/BSM - Upper + Lower Housings • Qualified clearance cuts to guarantee required clearance to Crank Shaft & Conrod loci Integrated Oil pump inlet + discharge channels Material: -Mule1: 6061T6 Machined Billet Aluminium -Mule2: A356T6 Plaster Mold -Protoypes/production: A383 (ADC12) Die Cast

  11. OP/BSM - Line Bore Assembly • 11x M8-1.25x45 Flange head bolts: • Maximum clamping force to eliminate fretting between upper & lower housings • maintain true roundness of bearing bores (during & after line boring Ops) • Oil pump cover mating face & dowel holes are machined in same setup to guarantee profile & flatness • Assembly clamped down at four bolt locations with actual bolt clampload force during machining ops to replicate assembled on-engine condition

  12. OP/BSM – Gear Train (C/S, Driver, Driven) -122x61x61 / 24NDP / 14.5°NPA / 32.75°HA -Designed to maintain 20µm backlash @ min. ctr distance & max tooth thickness -Material: 42CrMo4 (4140) -Mach. Process: Ground

  13. OP/BSM – Balance Shafts + Bearings • Parent Metal bearings on lightly loaded journals • Proven design (Current production BSM application) split shell friction bearings: • -Low Carbon Steel back • -Federaloy A-515 lining • Total unbalance: 8.5 kg.mm • “Double D-Flat” Gerotor drive on Driven Shaft • Patented I beam design for maximum stiffness. < 3µm deflection across any journal width: • Minimal bearing edge loading • -True running transfer gears) • D4512 Ductile Iron balance shafts w/ ground + polished bearing journals surfaces (Ra 0.16)

  14. OP/BSM – Oil Pump Components • Spring: rate set for PRV to open @ 570kPa • Pressure Regulating Valve: -Material: Steel • -vented cross-drill design • -sharp edged for less debris sensitivity • 6073 Type Trochoidal Gerotor • -2:1 Drive ratio • -26.5L @ 1300 erpm Flow Rate

  15. OP/BSM – Oil Pump Housing Material: -Mule1: 6061T6 Machined Billet Aluminium -Mule2: A356T6 Plaster Mold -Prototypes/production: A383 (ADC12) Die Cast • Progressive opening PRV / oil bypass cavity

  16. OP/BSM – Oil Flow Routing

  17. OP/BSM – Engine Dowels • Oil discharge port • BS Bearing oil feed port • Dia14 OP/BSM Locating Dowels to bed plate

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