Advanced ceramics are used in automotive including the following aspects: Hybrid Vehicles, Exhaust Manifolds, Diesel Particulate Filters, etc.
Precision engineered ceramic shafts and bearings are used in the water cooling pumps of next-generation hybrid vehicles for cooling critical engine electronics and lithium-ion batteries. In addition to their longevity due to their excellent chemical resistance to the glycol coolant, ceramics are lightweight which can improve fuel efficiency and low noise running. E.g., boron carbide ceramics are used in brake linings of vehicles. Silicon carbide ceramics are used for high performance “ceramic” brake disks, as they are able to withstand extreme temperatures.
Protecting the electronic engine management system of a vehicle from high temperatures surrounding the engine is a major challenge for design engineers. Ceramic materials can handle the extreme heat from the exhaust manifold. Besides providing heat protection, these systems can also mitigate engine noise.
Diesel Particulate Filters
The segments of a diesel particulate filter are bonded together using a ceramic paste composed of specially engineered low biopersistent fibers. The application properties of the paste are controlled by these fibers during production. In addition, these fibers deliver the thermal shock performance essential for the high temperature regeneration cycle used for filter cleaning during driving the vehicle.