Tier 4 Interim is the USA's, Environmental Protection Agency's (EPA) new set of regulations for off-highway diesels. These regulations require diesel engines from 56-560kw to meet new standards.

In order for manufacturers to meet the regulations they must cut Particulate Matter (PM) by 90%, and Oxides of Nitrogen (NOx) by 45%. This means manufacturers will have to develop significantly cleaner engines that are more fuel efficient and cleaner burning.

Not only has Hyster met these regulations, the next generation of Hyster big trucks are cleaner, quieter, more responsive and significantly more fuel efficient by up to 30%.

Summary of Hyster new generation forklifts solutions.
Hyster have worked closely with Cummins to meet Tier 4 Interim standards. Cummins QSB and QSL engines feature particulate filter exhaust after treatment system and a cooled Exhausted Gas Recirculation (EGR) system.

Exhaust Gas Recirculation (EGR)
Cummins engines utilise cooled Exhaust Gas Recirculation (EGR), allowing for cleaner combustion with NOx reduced by 45%, efficiently recirculating exhaust gas and lowering combustion temperatures.

The key components of the Cummins cooled EGR system is: EGR Valve, EGR Cooler and Variable Geometry Turbocharger (VGTTM).

Variable Geometry Turbocharger (VGT)
The Variable Geometry Turbocharger (VGT) uses a sliding nozzle, which controls the exhaust flow into the turbine wheel; delivering rapid boost at lower engine rpm and then maintains high boost at higher rpm. The system also incorporates a larger and smaller turbocharger in a single unit, achieving significantly improved response.

The Cummins EGR system not only meets emission standards, it also increases engine performance and improves fuel efficiency significantly.

Particulate Filters and Regeneration
Cummins Particulate filters reduce Particulate Matter (PM) emissions by 90%. It replaces the Tier 3 muffler, providing equal if not better sound reduction. The Particulate filter collects carbon and other soot on the walls of the filter. The filter also has self-regenerating features; when sufficient exhaust temperatures are met the filter oxidizes particle matter.

Enhanced Air Filtration
Cummins air filtration works as a 2-stage system with Sy-klone per-cleaner removing up to 80% of contamination in the first stage. After the pre-cleaner stage the Cummins Direct FlowTM air filter removes the remaining particles.

Developed specifically for Tier 4 Interim to provide more performance with a lower profile design saving up to 50% more space. The air cleaner uses a highly-efficient coalescing filter and crankcase ventilation system manufactured by Cummins Filtration. Air flow to the engine is improved with almost 100% efficiency over the life of the filter.

The filter also features temperature barometric and atmospheric pressure sensors that provide data to the engine control module. A secondary safety filter is also fitted, that ensures protection of the engine if the main filter becomes compromised.

Cleaner Oil Filtration
Another requirement of Tier 4 Interim is that the crankcase emissions be eliminated. Cummins achieved this by using a highly efficient coalescing filter. The filter returns the oil to the crankcase, and also provides the benefit of removing oil mist and small oil droplets, resulting in an even cleaner engine and powertrain.

Electronic Engine Management
Cummins Tier 4 Interim engine management system has been significantly upgraded, fitted with the latest electronic control module the CM2250. The new model provides 3 times faster processing power and the double memory capacity, in comparison to the Tier 3 models.

Modes to Optimise Performance
Hyster big forklifts come standard with operator controlled selection of performance modes ECO-elo (fuel efficiency) or HiP (high performance).

The normal operating mode is set to HiP (high performance), but when ECO-elo mode is turned on the maximum engine speed is reduced and the engine response becomes less aggressive, resulting in reduced fuel with barely noticeable performance loss.

Hyster Cooling on Demand, Alternate idle speed, load sensitivity & RPM management.
This system will be combined with Hyster advanced cooling on demand and alternate engine idle speed, load sensing hydraulics, and RPM management, which contributes to additional fuel savings of up to 15%.

Summary of Key features:
Hyster trucks with Tier 4 Interim compliant engines can achieve up to 15% better fuel consumption, resulting in up to 30% fuel saving when combined with both Cummins and Hyster technology, while also providing significantly better engine response and reliability.

• Advanced Particulate Filters Remove 90% of PM.
• EGR recirculating exhaust system reduces NOx emissions by 45%.
• Direct Flow Air Cleaner with 100% air efficiency over the life of the filter.
• Cooling on demand and alternate engine idle speed, load sensing hydraulics, RPM management, further reducing fuel consumption by 15%.
• Productivity has also been enhanced, thanks to faster engine response.
• Cleaner and quieter operation than ever before.
• Reduced CO2 emissions, helping users to reduce the overall carbon footprint of the truck.
• ECO-elo or HiP modes with operator controlled selection.

Models that will benefit:
The following model series are affected by the legislation and will benefit from the new Cummins engines and Hyster engine technology:

• 16-18 Tonne Series Forklift Truck
• 25-32 Tonne Series Forklift Truck
• 36-48 Tonne Series Forklift Truck
• Empty Container Handler
• Laden Container Handler
• Reach Stacker

For more information visit Adaptalift Hyster's website.

Head Office:

1574 Centre Road,

Springvale, Victoria, 3171

Australia

Telephone: 1300 880 335

Fax:+61 3 9547 0668

For more information, click to view Adaptalift Hyster Forklift Rentals & Sales ShopFront