Originally posted by pmmimac
In my opinion as a guest, bus and boat exhaust fumes are the worst aspect of Disney transportation.
Is there any chance that some of the buses that you will be testing this year will be powered by natural gas or any other alternative fuel?
There's actually a lot going on that most people don't know. For example, today's Diesel engines are by FAR cleaner than those engines from just a few years ago. And those of tomorrow will be virtually pollution-free. As it stands right now, the newest Diesel engines are actually CLEANER than most Compressed Natural Gas engines. They're also cheaper to buy, run & maintain, they're more reliable, durable, and don't require the extra infrastructure than a CNG conversion would necessitate.
Alternative Fuels are misleading. They're in thier infancy, and still have kinks. They're not as reliable as Diesel, they're expensive, and require all new maintenance and fueling facility, complete with training.
Diesel has the reputation for being smokey and dirty... and yes, that's how they were 10 years ago. But today's Diesel is so vastly different.
As for Disney... we did experiment with different forms of alternative fuels, and decided that the newer Diesel engines were our best choice.
Most of our buses use the Detroit Diesel 6v92 engine. This older engine is a turbo-assist 6cyl 2-stroke engine, and without proper maintenance, it does tend to smoke.
Starting in 1994, our last order of new RTS's was equipped with the low-emission Detroit Diesel Series 50 engine. This engine is a turbo charged 4cyl 4-stroke engine, and has about 75% less emissions than the 6v92. We are in the process of repowering some of our 6v92 engines with the cleaner Series 50 engine.
Our Nova LFS buses use the ultra low emission Detroit Diesel Series 40 engine. (Turbo 6cyl, 4-stroke) These buses have even less emissions than that of the Series 50.
As it stands right now, approximatly 40% of our fleet is low-emissions. As we repower our buses, and/or replace the older buses with newer ones, that number will increase. Also, better maintenance would help get rid of the smoking at takeoff.
Here's a really great article:
Mass Transit Magazine - Diesel Report