Yesterday Scania had a investors day when they showed a new truck of the R-series.


Question:

Will Scania follow the other leading truckengineproducers in using CGI for engine blocks and heads?


Answer from Hasse Johansson head of R&D:

Yes, in the years to come we will for sure use whatever is possible because we need to increase the combustionspressure to improve the efficency of the engines in the future. Right now we do not need CGI but as I said, in the years to come we need that kind of strength to improve the efficency of the engines. So we will follow that trend. Yes.......

The whole Q and A including some other information is avvailable from
http://streamsync.qbrick.com/02440/040331/

Scania

 

Ummm, what is CGI??

 

You are quite normal because most people have never heard the word "CGI" in terms of enginematerial. They think itīs just a computerterm.

Just short: Itīs a kind of iron and the third engineblock material used in combustionengines over 100 years history. Just started in volumeproduction.
You will for sure hear a lot more about CGI.

What is CGI?

Articles about CGI


Simply explained, CGI sits in the middle between
gray iron and ductile iron. It is significantly tougher
and more durable than the former, while having
better thermal conductivity and machinability than
the latter. Its strength lies in the rounded wormshaped
graphite particles that make up its structure.
In structural areas, such as cylinder bore walls, there
must be absolutely no flake graphite, and nodularity
must be no greater than 20 percent. It is this fine
balancing act that has presented foundries with
previously insurmountable process control problems.

--No problems any more.