Seizure Recovery System For Fuel System Distributor

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Seizure Recovery System For Fuel System
Distributor

• Project Scope
• Sponsored by Cummins Engine Company
• Team 11
• Michal Brown, Keron Miller,
• Sean Edwards, Ben Nuttall

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• 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.

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• 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 re- engagement
  of the rotor after the torque falls below a
  threshold level
• Maintain the timing of the rotor upon
  re- engagement.

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• Proposed Problem Solution, contd
• Prototypes of potential solutions will be built
  and tested.

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• 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

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• Design Parameters contd
• The angular alignment of the drive must be as
  good as the current design and must be able to
  rotate in both directions.
• 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.

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Questions?