New Truck Range with more Powerful, Economical and Cleaner Engines from Isuzu
The release of Isuzu's all-new N and F Series truck ranges has heralded the start of a new era in Japanese trucks , offering the Australian market new more powerful diesel engines that are the 'cleanest' of all conventional engines among the high volume Japanese manufacturers.
The new Isuzu trucks conform to stringent Euro 4 emissions standards as opposed to the considerably more lax US EPA 04 levels met by Isuzu's Japanese competitors. Isuzu's Euro 4 compatible engines comfortably meet the latest ADR80/02 exhaust emissions requirements, and produce as little as one sixth the particulate matter (PM) emissions standard required for engines complying with US EPA 04.
In developing the new engines, Isuzu Clean Air Solutions (I-CAS) technology has been applied, to meet both environmental and market requirements. I-CAS achieves an integration of three key technologies to improve emissions and increase efficiency. I-CAS includes 'in-cylinder' combustion optimisation technology, the very latest in exhaust after-treatment processes and the most advanced in-house developments in electronic control technology.
All engines are turbocharged, air to air intercooled and feature high-pressure common rail injection, advanced cooled EGR (Exhaust Gas Recirculation) systems, variable geometry system (VGS) turbochargers and a Diesel Particulate Diffuser (DPD) exhaust after treatment, a first for the Australian market.
DPD – How it works
As the name suggests, the Diesel Particulate Diffuser minimises the amount of PM a truck emits via the exhaust. The DPD, which is located midway along the truck's exhaust, combines an oxidation catalyst to clean nitrogen oxides and hydrocarbons, and a ceramic filter that traps harmful PM.
Pressure differential sensors within the ceramic filter are used to monitor the accumulation of trapped PM. Once a certain amount of PM is detected, the ceramic filter regenerates; this is done via post-injection which elevates the exhaust gas temperature to burn off the accumulated PM.
The cleaning process is aided by precision control of the exhaust brake and exhaust throttle, which assists in raising the exhaust gas temperature, promoting PM burning.
The truck's engine control unit (ECU) continually monitors the condition of the ceramic filter and under the great majority of operating conditions, regenerates the filter automatically without the driver even knowing. However, in some rare circumstances, the filter will require manual regeneration.
Manual regeneration requires the driver to press the regeneration button on the dashboard and keep the truck stationary and idling throughout the 15-20 minute process.
Go to Isuzu Trucks for more information.
Engine summary table below:
[Tue 18/03/2008 03:15:24]
|
