missing spray holes in hpi hd injector nozzles
DESCRIPTION
Missing Spray Holes in HPI HD Injector Nozzles. Sponsored by: Cummins, Inc. ME 462 Capstone Design – Spring 2008 Design Team: David Graves, Aaron Huesman, Kelly McCormick, Brandon Underwood Advisor: Dr. H. A. El-Mounayri. Reason for Design. HPI HD Injector Nozzles - PowerPoint PPT PresentationTRANSCRIPT
Missing Spray Holes in HPI HD Injector Nozzles
Sponsored by: Cummins, Inc.ME 462 Capstone Design – Spring 2008
Design Team: David Graves, Aaron Huesman, Kelly McCormick, Brandon Underwood
Advisor: Dr. H. A. El-Mounayri
Reason for Design
• HPI HD Injector Nozzles• Partial or Missing Spray Holes
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Main Requirements and Targets
• Implement non-contact method of checking nozzles for correct number of thru holes.
• Keep up with current production rates (3900 nozzles per day maximum.)
• Identify nozzle part number (ID matrix read)• Pass/Reject nozzle before next manufacturing
operation.• Keep current manufacturing process
cleanliness (4 micron tolerance).Purdue School of Engineering and
Technology 3
Product Presentation
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Insert Nozzle Here
Matrix Reader Gets Part Number
Part Number Sent to AutoID
Controller
AutoID Controller Sends Program # to Vision System
Part is either “OK” or “NG”
“NG” Parts are Rejected
Product Evaluation(Engineering Targets)
• Residue size under 1 µm: None Expected• Footprint under 1 foot2: Within Range• # of Operators Needed 1 or less: 1• # of Operator Miscues <=1 / 100: None with
minimal training.• Less than 2 hours of maintenance per month:
Met• Steps required to use <=2: Within Range• Time added to process <=10 sec.: Under
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Product Evaluation(Engineering Targets)
• Minimize cost added: $0.012 per nozzle over the first year.
• Number of injuries per year, zero: None expected.
• % of nozzles damaged during process, zero: None expected.
• % of incorrect identification or pass/fail, zero: None Expected.
• % of models capable of being tested, 100: Inconclusive but positive indications.
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Conclusions and Recommendations
• Conclusions– Test unit meets all customer requirements set
forth in the design phase– Test unit meets or exceeds all engineering targets.
• Recommendations– Automate by incorporating into assembly line– Develop case to house electrical control
components– Reinforce test unit housing with stiffening agents
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Questions/Comments
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