Welcome Engine Deposit Problems and Solutions • Evidence of deposit problems – Society of Automotive Engineers (SAE) Paper documentation • SAE Paper publication process – Submit abstract – Submit Draft Manuscript • SAE Papers considered automotive authority – Re-submit corrected draft – Submit Final Paper
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Welcome Engine Deposit Problems and Solutions Evidence of deposit problems –Society of Automotive Engineers (SAE) Paper documentation SAE Paper publication.
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Transcript
Welcome
Engine Deposit Problems and Solutions• Evidence of deposit problems
– Society of Automotive Engineers(SAE) Paper documentation
• SAE Paper publication process– Submit abstract– Submit Draft Manuscript
• SAE Papers considered automotive authority
– Re-submit corrected draft– Submit Final Paper
SAE Deposit Documentation
• How much documentation?• SAE Papers published 1998 to today
SAE Papers by: Additive Manufacturers Assn., Air Improvement Resource, Auchland Institute of Technology, Automotive Fuels Consultants, Automotive Testing Labs, CRC Deposit Group, Chalmers University of Technology, EG&G Automotive Research, FEV Motorentechnik, Institute for Technical Chemicals and Petrochemicals, Institute of Applied Thermodynamics
Testing & Research Institutions
SAE Papers by: Japan Automobile Manufacturers Association, MIT, OACIS Deposit Workshop, Pennsylvania State University, Petroleum Association of Japan, Princeton University, RWTH Aachen, Rutgers University, Sandia National Laboratory, Southwest Research Institute, State University of New Jersey, University of Kansas, University of Utah, Wayne State University
Deposit Forming Mechanism
• Running engine cooled– Intake air flow, evaporating fuel
• Light fuel molecules evaporate
• Heavy olefins, aromatics (sticky, waxy substances) remain, oxidize and polymerize– Forms sticky coating gums, varnish, resins
• Engine stops, fuel residues remain– No cool air, no evaporating fuel– Heat rises, highest temp. after 15-30 minutes
Repeat Hot Soak Produces Deposits
• Each engine stoppage produces “hot soak”
– Sticky coatings build up• Repeat hot soak accumulation
– Bakes into thick hard carbon deposits
US Driving Conditions
• Recent study shows– 80% cars start at least three times per day– 63% trips under 20 miles– 57% driving in
stop-and-go traffic
• Typical US drivingproduces repeathot soak deposit forming conditions
Engine Design Problem
• Deposits most critical engine design problem – Adverse effect driveability,
Health Hazards: “Central nervous system effects … headaches, dizziness and loss of coordination … reproductive effects ... serious nervous system depression ... damage to kidneys, blood, nerves, liver and lungs … dermatitis … eye burns ... dizziness, fatigue, drowsiness, nausea, headaches, unconsciousness ... cancer and birth defects or other reproductive harm ... asphyxiation and even death”
1. Safe
1. Vehicle
2. Technician
3. Environment– No Alcohol, Methanol
• Produce Aldehydes, noxious odors, endanger technician’s health
• Developed for major corporation’s engineer
• Requested products safe for:
2. Effective
• Tested and proven effective in demanding industrial applications worldwide