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xxx 2012-07-10

New solutions for TIER 4 Final emissions standards outlined in new Rexroth mobile equipment brochure

New solutions for TIER 4 Final emissions standards outlined in new Rexroth mobile equipment brochure

Bosch Rexroth has published a new brochure to help mobile equipment manufacturers solve the engineering and operational challenges associated with the final implementation of TIER 4 diesel engine emissions standards in 2014.

In 2014, TIER 4 Final Regulations will be in effect, and diesel systems will be required to operate generating emissions to be at 10% of TIER 3 levels for particulate matter (soot) and 50% of nitrous oxide (NOx) levels.

This significant reduction will force many mobile equipment manufacturers to fully redesign their systems -- re-designs that can impact the function and performance of equipment such as backhoes, excavators, telehandlers and other systems.

The new brochure details Rexroth’s insights into the engineering challenges facing mobile equipment builders as they engineer TIER 4 compliant machines including:

1. Expanded space requirements -- exhaust cooling systems that may require up to 15 to 40 percent more space

2. Increased cooling systems -- to maintain a narrower engine temperature range to control emissions

3. Changed dynamic response of diesel engines -- if machine developers downsize the engine to control emissions, that could impact machine performance

4. Increased operating and equipment costs -- If a piecemail approach is taken to redesign systems, component costs can escalate and operational performance suffers

The brochure also provides detailed concepts from Rexroth on ways to address these issues through optimized hydraulics and drives solutions, with specific recommendations about how to apply cutting edge mobile technologies such as hydrostatic fan drives, diesel hydraulic controls and variable speed pumps to create TIER 4 compliant mobile machines that are cost-effective and competitive solutions.

Download the free brochure at

To learn more, please visit

The Bosch Group is a leading global supplier of technology and services. According to preliminary figures, more than 300,000 associates generated sales of 51.4 billion euros ($71.5 billion) in the areas of automotive and industrial technology, consumer goods, and building technology in fiscal year 2011. The Bosch Group comprises Robert Bosch GmbH and its more than 350 subsidiaries and regional companies in some 60 countries. If its sales and service partners are included, then Bosch is represented in roughly 150 countries. This worldwide development, manufacturing, and sales network is the foundation for further growth. Bosch spent more than 4 billion euros ($5.5 billion) for research and development in 2011, and applied for over 4,100 patents worldwide. With all its products and services, Bosch enhances the quality of life by providing solutions which are both innovative and beneficial.

Further information is available online at and


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