Lubrication Analysis

Breakthrough Advances in Lubrication Modeling

See the Lubrication Analysis Brochure (PDF)

GT-SUITE can be used to quickly and efficiently design, analyze, and optimize all variants
of lubrication components and systems. Typical lubrication models in GT-SUITE involve:
• Steady state pressure and flow rate distribution throughout oil circuit
• Priming
• Thermal warmup and integration with cooling system models
• Pump analysis for energy consumption over driving cycle
• Detailed component analysis for:
         o pump
         o cam phaser
     o hydraulic lash adjuster and chain tensioner
       o bearings based on mobility method
       o valve dynamics
Results can easily be analyzed with the GT-POST post-processor, as shown in several
application results below, ranging from steady-state to priming and pump analysis.

Fast Model Building

Building a model is easy thanks to the GEM3D pre-processor of GT-SUITE, where a
standard oil circuit flow network can be built very quickly by discretizing (semi-automatically)
the entire oil network into pipes and flowsplits, starting from an existing CAD file.

System Integration - Lubrication and Cranktrain

Lubrication models can easily be integrated with other systems such as cooling, cranktrain,
valvetrain and engine performance. Shown below is an example integrating a cranktrain
model with the lubrication system to predict the bearing loads acting on each of the bearings
in the lubrication system. The loads can be predicted for a rigid, torsional or bending
crankshaft or camshaft.

Product Highlights:

Based on Navier-Stokes equations
Always solves energy equation (thermohydraulics)
Fundamental cavitation model
Transient aeration model (free and dissolved)
Tracks and transports vapor and gases
Leakage with pressure dependent clearance
Frequency dependent friction
Pipe wall compliance
High-level templates for component design
Automated creation of flow network from 3D CAD data
Gerotor, gear, vane and other pumps

Advanced Features and Applications:

Fundamental pump models with predictive flow rate and pressure ripple modeling
Priming of dry circuits
All oil consumers such as jets, lash adjusters, cam-phasers
Thermal warm-up of structure
Transients and driving cycle simulation
Integration with mechanics for bearing load predictions

Advanced Bearing Modeling:

Predictions of:
• orbit and film thickness
• flow rate
• friction torque and power
• film extent
• peak oil film pressure
• thermal balance
• multiple pressurized or passive grooves and holes
• multiple flow rate options for specific bearing types
• separation into two races when load coincident with groove or hole
• hydrostatic force
• transient species (air purged by oil)

Back to list of all applications

For more information contact: (or contact us online)
Gamma Technologies, Inc. 601 Oakmont Lane, Suite 220 Westmont, IL 60559 USA	Tel. (630) 325-5848 Fax. (630) 325-5849 Email:CAE@gtisoft.com Web:www.gtisoft.com

APPLICATIONS

Engine Performance
Test Pressure Analysis
Exhaust Aftertreatment
Acoustics
SiL, HiL, real-time
Vehicle, driveline
Hybrid Vehicles
Cooling Systems

VTM
Underhood Modules

AC and Rankine
Lubrication and bearings
Fuel Injection
Valvetrain, camshaft
Cranktrain, crankshaft
Chain, gear, belt drive