A phenomenon called "blow-by" can both be a cause and an effect of carbon buildup inside of a direct-injection engine, and it's especially prevalent in turbocharged direct-injection engines.

Despite the benefits that direct injection holds over port injection, it has a few downsides too, with one of the most significant being increased carbon buildup. Carbon buildup is a collection of ...

Oil catch cans keep direct-injection engines from choking on their own blow ... A catch can interrupts the trip and aids in ...

The technology stems from a collaboration between Stanadyne, Katech and the Propane Education & Research Council.