On 5/30/2012 12:45 AM, Lew Hodgett wrote:
wrote:

Waterloo regional transit had a fleet of natural gas busses, and the
maintenance costs totally killed the project.
The converted diesel engines were failing at a very high rate. Don't
know if it ws due to lubrication issues, valve issues, or what - but
the engines were apparently good for about 1/4 the normal life of a
diesel. The cyl heads are heavily modified and they need spark
ignition - all of which could have been involved in the failures.
And
the intitial conversion price is gawdawfull too!!!
---------------------------------
Can't imagine how a natural gas conversion from diesel could be cost
effective.

L/A chose a different approach.

When it came time to rebuild and/or retire a diesel, it was replaced
with a natural gas engine.

Just one of the reasons it took over 10 years to accomplish.


You can't simply extrapolate that experience to the entire nationwide
fleet of private vehicles. For one thing, the infrastructure to
distribute fuel on such a massive scale simply doesn't exist.