On the importance of the gearbox

With the introduction of the new D13 litre engine in Eurpe and North America a new update of the I-shift gear-box was introduced. The new I-shift utilise a series of new energy saving features and improves the comfort simultaneously.

I-shift gear box

My colleague Claes Westberg is busy comparing fuel consumption for different buses. When the fuel consumption statistics for a large number of buses using the B12B chassis with the I-shift and with an automatic gear box are compared, the difference is clear. The I shift saves between 7% and 11% depending on speed. In the graph below shows both total speed (including all idle) and drive speed (average of all driving excluding idling) for the statistical selection of buses.

Diagram showing fuel consumption for B12B, coaches with I-Shift and automatic gear boxes.

About volvobuses

Adjunct Professor of Catalysis at Chalmers University of Technology. Lives in Gothenburg, Sweden, with my wife and three daughters born in 1991, 1994 and 1997. Is a passionate runner.
This entry was posted in Uncategorized. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s