|
The real world performance potential of OCP™ technology
on automotive 4-stroke applications has been demonstrated and independently
evaluated by a number of manufacturers, engine technology companies
and regulatory bodies, such as RWTÜV Fahrzeug GmbH (the technical
body responsible for exhaust emissions in Germany).
Orbital's automotive 4-stroke technology demonstrator
was based on a Ford Mondeo, with the original 2.0litre DOHC 4-stroke
engine upgraded to include Orbital's direct injection fuel system
and engine management system. The independent TÜV testing of
October 1999 verified that Orbital DI was capable of meeting European
Stage 4 emissions levels well in advanced of the 2005 implementation
date. The testing also confirmed that a 13% improvement in fuel
economy was possible over the identical vehicle fitted with a conventional
multi-point fuel injection engine.
The catalyst system used to achieved these
results was significantly lower in cost than that required by competing
DI systems, an achievement made possible by OCP™'s superior
ability to control the pre-catalyst pollutants. The reliance of
competing DI technologies on complex lean NOx catalysts (LNC) and
storage catalysts adds significantly to total system cost, whilst
debate persists with regard to durability and susceptibility to
fuel sulfur levels.
|
