• Home
  • Contractor
  • Contrafed
  • Local Government
  • Archives
  • About Us
  • Advertising
  • SUBSCRIPTIONS
  • Contact Us
Quarrying & Mining Magazine
Quarrying & Mining Magazine
Transdiesel June 19 Service Promise Top Banner
Transdiesel June 19 Handover Top Banner
  • Home
  • Contractor
  • Contrafed
  • Local Government
  • Archives
    Q&M magazine (December 2017 – January 2018)

    Q&M magazine (December 2017 – January 2018)

    Q&M magazine (October - November 2017)

    Q&M magazine (October - November 2017)

    Q&M magazine (June–July 2017)

    Q&M magazine (June–July 2017)

    Q&M magazine (April-May 2017)

    Q&M magazine (April-May 2017)

    Q&M magazine (February-March 2017)

    Q&M magazine (February-March 2017)

  • About Us
  • Advertising
  • SUBSCRIPTIONS
  • Contact Us
A game-change for engine emissions
Q&M

A game-change for engine emissions

May 15th, 2014 Charles Fairbairn Q&M, Q&M Comment

 

Diesel engines power most of the world’s off-road construction equipment and produce exhaust emissions that contain some harmful pollutants such as nitrogen oxides (NOx) and particulate matter (PM).

Tier 4 compliant John Deere IT4 engine

Tier 4 compliant John Deere IT4 engine

The two world agencies driving emission standards for off-highway diesel engines are   the   US Environmental Protection Agency (through its Tier 4 Final regulations) and the European Union through its Stage IIIB equivalent emissions regulations for the EU member states.

These regulations take us a long way down the road to cleaner air and the elimination from diesel emissions of nitrogen oxides and particulate matter.

In terms of effect dates and emissions levels, the EPA and EU are closely aligned, with the first regulations in effect on January 1, 2011 across the 130-560kW (174hp to 751hp) power category, and requiring diesel engines to reduce PM exhaust emissions by 90 percent and NOx exhaust emissions by 45 percent compared with the old Tier 3 and Stage IIIA emissions standards.

To lessen the cost impact on manufacturers of off-highway equipment a transitional period was introduced in 2012 where manufacturers could continue to build previous generation models while designing and building new models that   met the tough emission standards.

So, the final Tier 4/Stage IV regulations are being phased in over time according to engine specifications. The final deadline covering 560kW and above (751hp) is 2015.

Tier 4 compliant John Deere IT4 engine

Tier 4 compliant John Deere IT4 engine

Engines sized between 19-56kW had to meet standards by last year, however lower tier engines will remain in use in regions around the world that do not have emissions standards for off-road engines, including New Zealand.

The old technology will eventually be superseded as European and US standards drive new engines and the added technology and increasingly expensive components will add to the cost. While there are obvious fuel saving opportunities (at least five percent),and increases in power output, it remains to be seen whether the benefits will outweigh the rising cost of equipment.

Manufacturers have gone down a number of different design paths to meet regulations but have in common high pressure common–rail fuel injection (at least 2000bar) with variable geometry turbocharging and electronic engine control being equally popular standards.

Manufacturers are also commonly adopting both exhaust gas recirculation (EGR) and selective catalytic reduction (SCR) with a urea-based exhaust additive such as AdBlue. In the past this has been an ‘either/or’ option.

Share this:

  • Click to share on Twitter (Opens in new window)
  • Click to share on Facebook (Opens in new window)

Related

  • Tags
  • final Tier 4/Stage IV regulations
  • off-road construction equipment
  • US Environmental Protection Agency
Facebook Twitter Google+ LinkedIn Pinterest
Transdiesel June 19 Handover Sidebar 1
Transdiesel June 19 Service Promise Sidebar 1
Latest Q&M Articles
Dec 16th 7:00 AM
Mining

TTR not giving up on mining STB

Dec 15th 7:30 AM
Upfront

Minerals sector and our well-being

Dec 14th 7:30 AM
Profile

Lee Valley Quarry revisited

Dec 13th 3:30 PM
Upfront

First quarry pinged over lack of CoC

Oct 22nd 7:30 AM
Profile

Born in a quarry – The history behind Real Steel

Oct 17th 10:25 AM
Q&M

2019 AQA 50th celebrations

Oct 15th 7:00 AM
Profile

A natural industry leader

Oct 3rd 7:30 AM
Profile

Saluting 50 years of quarrying – Andy Loader

Aug 15th 7:00 AM
Quarrying

Collaboration sets new standards

Aug 2nd 1:10 PM
Profile

Stepping up into extraction

Oil Intel Total
QuarryingEventsQ&MArchives - Q&MLegalMachineryRegulationsTrainingHealthAwardsUpfrontHealth & SafetyProfileProducts and Servicescoal miningAusIMMHistoricalObituaryOn The CoverResearchFeatureWorkplace SafetyNewsQ&M CommentTechnicalInnovationMiningGold MiningConferenceCement and Concrete Association (CCANZ) updateTechnologyWheels In The WorkplaceRemembering
  • Click here - to select or create a menu

Contrafed Publishing Co. Ltd has been producing magazines for New Zealand’s infrastructure industries for more than 40 years.

Most Viewed Stories
Recent Posts

TTR not giving up on mining STB

Towards the end of last year TransTasman Resources noticed the Court of Appeal to Seek Leave to...

Minerals sector and our well-being

Straterra has cautiously welcomed the government’s resource strategy that recognises the...

Lee Valley Quarry revisited

Pictured above: The newly commissioned McCloskey crusher in action at the Lee Valley Quarry face...

Our Magazines

Our Blog

http://contrafedupdate.me
© Contrafed Publishing Co. Ltd. All rights reserved.
Phone: +64 9 636 5715 - Fax: +64 9 636 5716 - Email: admin@contrafed.co.nz