Seizure Recovery System For Fuel System Distributor

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Seizure Recovery System For Fuel System
Distributor

• Needs Assessment, Specifications and Preliminary
  Concepts
• Sponsored by Cummins Engine Company
• Team 11
• Michal Brown, Keron Miller, Sean Edwards, Ben
  Nuttall

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Customer Needs

• Our objective is to design a mechanism that will
  enable the rotor to break away from the gear pump
  shaft when the rotor seizes and then re-engage at
  the same timing.

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Specifications

• Target disengagement torque of 30 in-lbs
• Drag torque while disengaged should be less than
  5 in-lbs
• Must have a torsional fatigue life of 10 million
  cycles
• Must be able to disengage/re-engage for at least
  100 seizures without loss of torque
• Must be able to re-engage in the same angular
  position as disengagement
• Shaft alignment must be maintained

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Specifications

• Wear resistance must be as good or better than
  the current design
• Must be backwards compatible with the existing
  system with the exception of the existing
  driveshaft. This implies that the new parts must
  occupy the same amount of volumetric space as the
  existing design
• Parts must add less than 21 to the cost of the
  engine

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Fuel System
6
Exploded View
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Customer Original Design
Original parts
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Customer Interim Solution
Part modifications
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Design Concepts
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Design Concepts
Concept 2
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• More concepts are expected to be generated before
  a final decision is made on which concept to
  pursue.
• Close consultation with the client will be
  necessary to help eliminate impractical options
  and to fine tune the more appropriate
  alternatives.

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Questions?