Seizure Recovery System For Fuel System Distributor Sponsored
Seizure Recovery System For Fuel System Distributor Sponsored by Cummins Engine Company Team #11 Michal Brown, Keron Miller, Sean Edwards, Ben Nuttall
Background Information: ●Cummins has a fuel system distributor in production that seizes during overheating or debris ingestion. ●The warranty cost associated with the repair of the part is significant. ●Down time due to part failure is too long.
Proposed Problem Solution: ●Design and validate a mechanism that will enable the rotor to break away from the gear pump shaft to prevent the shaft from breaking. ●Design the mechanism to allow for reengagement of the rotor after the torque falls below a threshold level ●Timing of the rotor must be maintained upon re-engagement.
Design Parameters: ●The target disengagement torque should be within 15 -20 in-lb, the drag torque while disengaged should be less than 5 in-lbs ●The drive must withstand normal operation indefinitely. ●Must be capable of disengaging/re-engaging for at least 100 seizures without loss in torque. ●Wear resistance must be as good or better than current design
Design Parameters cont’d: ●The angular alignment of the drive must be as good as the current design, or as determined acceptable by client. ●The drive must be backwards compatible with the current distributor and other components. ●Cost increase of the new design over the old design should be kept to a minimum.
Additional Information: ●Currently the only formal technical requirement is a 100 in-lb limit on failure torque. ●A meeting has been arranged with the client to gather more specific information about the nature of the problem ●Schematics of the part will be analyzed for important design parameters.
Questions?
- Slides: 7