Bearing dimensioning for Mass balancing system Bearing loads and specifications Klaus Schnölzer\FP&C

© ECS / Disclosure or duplication without consent is prohibited Bearing dimensioning for Mass balancing system Overview Author: Klaus Schnölzer Date: Overview: General specifcations:Sheet 3 General Project data:Sheet 4 Diesel Variant:Sheet 5-6 Gasoline Variant:Sheet 7-8

© ECS / Disclosure or duplication without consent is prohibited Bearing dimensioning for Mass balancing system General specifications Author: Klaus Schnölzer Date: General specifications: Target is the dimensioning of bearings for a Mass balancing system shaft with one ball bearing and two needle bearings. Dimensioning is for Diesel and Gasoline application. The respective bearing loads and installation spaces are displayed separately. Max. Bearing loads and inclinations can be calculated linear for all number of revolutions. General specifications (for Diesel and Gasoline):  Needle bearing can be designed with or without inner ring  Housing material: Aluminium  Axial locking of needle bearings: press fitted in housing  Axial force on Axial bearing (Ball bearing): 1251[N]  Axial locking of Axial bearing: shoulder in housing on one side, and circlip at other side  Oil specification: SAE 5W30  Temp. range: -30 to 140°C  Max. non continuos oil temp.: 150°C  Temperature for bearing calculation 120°C  Lh 10 bearing lifetime calculation  enlarged Lh 10 calculation with considering inclination, oil contamination, viscosity effect,…  Oil supply for needle bearings: diving partly into oil sump

© ECS / Disclosure or duplication without consent is prohibitedAuthor: Klaus Schnölzer Date: General project specifications: Main rout is to fulfill bearing specifications with catalog bearings. Prototyp parts: Delivery of first parts:cw 24/2010 Pieces per bearing position:150 pieces (75 MBS modules with 2 shafts) Serial data: SOP:4Q/2012 Pieces/year: Bearing dimensioning for Mass balancing system General project specifications

© ECS / Disclosure or duplication without consent is prohibited Ø40 Bearing loads Diesel Author: Klaus Schnölzer Date: Installation space for Diesel Max. outer diam. axial bearing: 40mm Shaft diameter for axialbearing:15-20mm Bearing width: 8-20mm Max. bearing width: 28mm Max. bearing width: 20mm Max. outer diameter needle bearing: 38mm Outer diameter shaft: 24-26mm Bearing A (axial bearing) Bearing B (needle bearing) Bearing C (needle bearing) Center line Bearing B Center line Bearing C Shaft shoulder for axial bearing

© ECS / Disclosure or duplication without consent is prohibitedAuthor: Klaus Schnölzer Date: Bearing loads and lifetime specifications 900h Massenausgleich Drehzahl Bsp. für Aufteilung des Laufzeitintervalls Speed range: [rpm] Lifetime interval: [h] Sum lifetime [h]:4360 bearing A: max. Bearing Force [N]1280 max. inclination [°]0,01638 bearing B: max. Bearing Force [N]6576 max. inclination [°]0,00378 bearing C: max. Bearing Force [N]1569 max. inclination [°]0,00685 Bearing loads Diesel

© ECS / Disclosure or duplication without consent is prohibitedAuthor: Klaus Schnölzer Date: Installation space for Gasoline Ø40 Max. outer diam. axial bearing: 40mm Shaft diameter for axialbearing:15-20mm Bearing width: 8-20mm Max. bearing width: 28mm Max. bearing width: 20mm Max. outer diameter needle bearing: 38mm Outer diameter shaft: 24-26mm Bearing A (axial bearing) Bearing B (needle bearing) Bearing C (needle bearing) Center line Bearing B Center line Bearing C Shaft shoulder for axial bearing Bearing loads Gasoline

© ECS / Disclosure or duplication without consent is prohibitedAuthor: Klaus Schnölzer Date: Bearing loads and lifetime specifications 900h MBS Speed For example of spliting lifetime interval Speed range: [rpm] Lifetime interval: [h] Sum lifetime [h]:4360 Bearing A: max. Bearing Force [N]1005 Max. inclination [°]0,0128 Bearing B: max. Bearing Force [N]5158 Max. inclination [°]0,00224 Bearing C: max. Bearing Force [N]1231 Max. inclination [°]0, Bearing loads Gasoline