Lubrication and condition monitoring for gas engines

3-days basis-training

Lubrication, Friction and Wear

• Lubrication and formation of lubricating film
• Hydrodynamic and hydrostatic lubrication
• Importance of viscosity and temperature
• Wear mechanisms and their causes

Fundamentals of lubricants

• Mineral oils, partially synthetic and synthetic oils in comparison
• Charactersitics and areas of application of Mineral oils, hydrocrack, PAO, Ester oils and polyglycols
• Miscibility and compatibilty of different oil types  
• Types, active principle and application of lubricants addtives

Lubricants for gas engines

• Requirements and characteristics
• Specialities of gas engines in comparison to conventional Otto and diesel engines  
• Different types of construction and their specific oil requirements
• Types of gas engine oils and their areas of application
• Additive application, ash content and alkalinity 
• Suitability for systems for after-systems of exhaust gases
• Specification and approval

Operational transformations of lubricants

• Application specific wear and oil ageing
• Oil oxidation, nitration and cracking
• Interpretation of AN, BN and i-pH
• Recduction of antioxidants and other additives
• Contamination: water, dust, sludge, petrol
• Input of combustion residues and their impact
• Visible alterations: cloudiness, varnish, phase separation

Impact of gas type and quality

• Gas types and their special charactersitics
• Complementary and replacement gas: natural gas, biologic gas, sewage gas, landfill gas, mine gas, wood gas
• Gas quality and gas purification

Pecularities of biogenic fuels (pilot-injection engine)

• RME/Biodiesel, plant oils: characteristics and pecularities
• Impact on engines in comparison to conventional fuels
• Reduction and optmization of oil changing intervals

Oil analysis for gas engine oils

• Oil analysis
   Why, when, how often?
   Methods and devices for sampling
   Required data, sampling datasheet 
   Online portal: lab report, data entry, enquiries
   Data migration into a maintenance program
• Analysis techniques
  Analysis sets, areas of application and explanatory power
  Identification of wear characteristic values: element analysis, PQ-Index
  Characteristic values for oil condition: viscosity, oxidation, FTIR analysis, acid, AN, i-pH, SAN
  Reduction of additives: antioxidants, FTIR and RULER, BN and AN
  Contamination: water, antifreeze agent, pilot-injection fuel, soot, sludge, acids, intermixtures
• Interpretation of lab report results
  Define warning and Limit values
  Recognize known oil types on lab report
  Interpretation of real lab reports