Automotive Engineering > Combustion engine

Components made of monolithic oxide and non-oxide ceramics as well as composites are interesting for use in combustion engines of motorized vehicles in positions in their design that require good resistance to mechanical, thermal, thermomechanical, electrical and corrosive stresses combined with low weight and high geometric precision even for small component sizes.

Depending on the specific requirements, today different ceramic materials are used. Listed in the following are such materials with selected properties that explain their suitability for use in combustion engines.

  • Al2O3
    • Mechanical resilience
    • Modulus of elasticity
    • Wear resistance
    • Corrosion resistance
    • Electrical insulation
  • ZrO2
    • Mechanical resilience
    • Modulus of elasticity matching the level of steel
    • Wear resistance
    • Thermal stability
    • Resistance to thermal shock
    • Thermal expansion matching the level of steel
    • O2 ion conductivity
  • SiC
    • Density
    • Mechanical resilience
    • Modulus of elasticity
    • Wear resistance
    • Thermal conductivity
  • Si3N4
    • Density
    • Mechanical resilience
    • Modulus of elasticity
    • Mechanical strength
    • Fracture toughness
    • Impact strength
  • Pb(ZrxTi1−x)O3 (piezoceramics)
    • Electromechanical properties
    • Size
  • Composites
    • Density
    • Wear resistance
    • Thermal stability

With the use of components made of monolithic ceramic materials and composites, the consumption of fuel and lubricants during operation of the combustion engine is minimized, and consequently the emission of harmful exhaust gases can be kept to a relatively low level.

Without exception, these materials impress with their long service lifetime and reliability in operating conditions.


Products for the application
Combustion engine

Engine control


      Valve shims

      Rocker arm coatings

      Spark plugs

      Glow plugs

      Turbocharger rotors

Knock sensor

      Piezoceramic rings

Fuel pump

      Side plates

Combustion control

      λ sensors

Cooling water pump

      Sliding rings

Injection pump