Irisbus continues its constant research into protecting the environment with measures ranging from the improvement of diesel engine technology to the use of alternative fuels.
In fact, the intention of the company to play a major role in the domain of “clean fuel” systems is clearer than ever. All solutions that can contribute towards a better world where nature maintains its rights, must be explored to the full.
Clean diesel engines
For many years now technology has made great progress in the field of optimising engine construction and tuning, combustion control, multiple-valve techniques, and electronic injection control, helping to considerably reduce the emission of harmful substances.
Emission levels can be further reduced by the use of particle filters. Irisbus has carried out experiments and research into this technical solution that is the first step along the road to post-treatment of exhaust emissions, currently under development.
Irisbus is also exploring other possibilities to protect the environment, and in particular, the use of alternative fuels, bio-fuels, or natural gas. Moreover, Irisbus is the European leader in the gas fuel field, with more than 2500 vehicles in use at the end of 2004. The models that run on natural gas in the Agora (now called Citelis), City Class and Access’ Bus range have been adopted by more than 30 European traffic networks. In fact, these vehicles offer remarkable qualities, especially in the field of environmental protection.
The latest models have lower emission levels than the European Standard EEV (better than Euro 5).
The Irisbus Fuel Cell Programme
Irisbus is the leader of a development and demonstration programme centred on fuel cell powered urban vehicles. The leading experts in electric and hydrogen traction from research institutes concerned with energy and transport, as well as the large European urban traffic networks will test vehicles equipped with various technological solutions in actual urban traffic conditions.
This two year programme is aimed at evaluating “fuel cell” technology for urban transport and at gathering all comparitive data concerning performance:
This could lead to the establishment of European regulations on “hydrogen fuel”.
The first vehicle to be studied under this programme is a CITYCLASS, launched at the UITP Congress in London in May 2001, which is currently in pre-operation in the Turin network.
Irisbus is one of the leaders in hybrid and electric-bus production
With 120 different vehicles operating in more than 25 towns, can boast an experience of more than 8 million kilometres with hybrid and electric buses.
With the hybrid traction the energy contained in the batteries is sufficient for a vehicle to cross a historical city centre without emitting any polluting agents, and with an extremely low noise level.
Braking energy is recovered and stored in the batteries.
Using this electro-diesel system, the optimised energy use reduces: