Call (636) 394-3331

  • See-3d 3 Dimensional Bore Surface Evaluation Equipment

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  • PROMPT-pic-front

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Sealing Technology

C-K Engineering provides Sealing Technology for internal combustion engines

Conventional piston engines:

  • Gasoline
  • Diesel
  • Natural Gas

Non-Conventional engines:

  • Rotary
  • Scotch Yoke
  • Nutating

Methods and Technology:

Cylinder Kit optimization through use of modeling/simulation to provide:

  • Design of components
  • Materials optimization
  • Gaging
  • Cylinder bore geometry
  • Cylinder bore finish
  • Specialized piston ring gaging

Specialized bench test fixtures for:

  • Ring face/cylinder bore wear
  • Ring side microwelding
  • Aerosol formation in ring belt

Gage Design

C-K Engineering designs, assembles, and grooms numerous dedicated gages and test fixtures utilizing standard and specialized designs for measuring piston ring characteristics and other gages for precision measurement of components.

  • Dedicated Gaging
  • Dedicated Test Fixtures
  • Miscellaneous Fixtures


C-K Engineering provides consulting services on a specific project basis, specific length of time, or on a monthly basis.

C-K Engineering specializes in consulting for:

  • Oil consumption
  • Blow by
  • Wear related to internal combustion engines/compressors
  • Hydrocarbon Emissions

Call us at 636-394-3331 for more information.


Inspection and Testing

C-K Engineering offers contract inspection services for measuring piston rings, pistons, and cylinder bore and liner components. 

This service has been utilized by engine and compressor designers and test facilities to develop:

  • Pre and post-test measurement of components
  • Measurement of components that exhibit differences in performance

C-K Engineering designs, builds, and operates dedicated bench test fixtures for evaluating various engine components specializing in:

  • Piston rings and pistons
  • Oil Consumption measurement
  • Specialized testing

Bench tests:

LS-9 Wear Tester - Ring Seal face and Cylinder Bore and Seal Mating Surface Friction and Wear Tester

  • Measures wear and friction rates based on variables of:  material, finish, load, lubricant, temperature and ring face profile
  • Used to test combinations of seal and mating surface materials to obtain data for wear rates, friction and scuff resistance in both lubricated and un-lubricated conditions for different seal finishes



Download information

LS-10 Ring Side Microweld and Wear Fixture 

  • Simulates the effect of the ring in the groove during engine operations in a controlled test environment that provides data much quicker and cheaper than engine testing
  • Used to measure ring to groove microweld in diesel and spark ignited engines of aluminum, cast iron or Metal matrix (MMC) surfaces. 
  • Data leads to solutions or counter measures that have proved to be successful in the past to eliminate observed microweld with minimum cost increases for the piston rings and/or piston grooves
  • Mechanical drive system induces rotational and vertical loading to the ring
  • Applies variations in temperature, force and rotational speed 
  • After test rings are evaluated for wear and microweld deposits
  • Alllows for quick and controlled tests that provide data much quicker and cheaper than engine testing
  • Evaluation and recommendations to eliminate microweld and wear based on industry experience and theoretical equations for acceleration, groove deflection, change in momentum, contact pressure and shear stress



Download LS10 info

LS-12  Aerosol test Fixture

Measures the aerosol in engine blowby based on material properties of viscosity, liquid density and surface tension

Reasons for aerosol study:

  • Determine the effect of Cylinder bore finish on oil blowby
  • Determine the effect of aerosol on oil consumption by changes in reverse blowby
  • Determine the effecct of aerosol on deposit formation through particle size study



Download LS-12 info

 Cylinder Kit Modeling Service

C-K Engineering provides a state of the art, windows based,  Cylinder Kit and components analysis model for piston rings, pistons, and cylinder bore geometries.  

This 4th generation PROMPT model has evolved over the past 30 years and provides an effective analysis of over 40 dimensional variables on cylinder kit performance.

  • Oil Consumption
  • Blow By
  • Wear
  • Hydro Carbon Emissions

 By using combustion pressure data from an engine at speed/load conditions, the PROMPT model can be used to optimize mean value, tolerance and relationships among variables.

gap end orifice                  ring side orifice                ring to bore

Piston Design & Modeling Service

Optimization of piston design and modeling.


  • Stress
  • Temperature Gradient
  • Skirt Contact
  • Friction Loss
  • Piston Motion
  • Land Profiles

What's New at C-K

CKE August 2014 Newsletter

Contact Us

C-K Engineering, Inc.
16144 Westwoods Business Park
Ellisville, MO 63021
(636) 394-3331