(photo courtesy: Chevrolet.com)
From Chevrolet.com:
The diamond-hard technology that enables razor blades to shave closer and last longer also allows the piston rings of the Ecotec 1.4L turbo engine, available on the 2012 Chevrolet Sonic and Cruze, to operate with less friction for better fuel efficiency and durability.
This use of diamond-like carbon coating, or DLC, on a General Motors powertrain component marks a first for Chevrolet. Although the advanced synthetic surface treatment is relatively new to automobiles, it can be found on a variety of high-end products, such as computer hard drives, orthopedic implants and semi-conductors. GM also is testing its use on machining tools.
In general, piston rings seal an engine’s combustion chamber, support heat transfer from the pistons to the cylinder wall and regulate engine oil consumption. In the Ecotec 1.4L turbo engine, the slick, synthetically hardened steel rings do these things with minimal wear and tear.
“Thanks to diamond-like carbon coating, we can use lower tension on the Ecotec’s piston rings to reduce friction, which improves fuel economy,” said Rich Ricchi, GM Powertrain technical specialist. “DLC also reduces oil consumption in high-mileage driving, due to the favorable wear properties associated with the DLC coating.”
Read entire article here.
Contact Tyrrell-Doyle Chevrolet for more information on the Chevrolet Cruze and Chevrolet Sonic.
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