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New Machines, engines meet Tier 4 emissions standards

Meeting Tier 4 emissions standards is like and upcoming trip to the dentist’s office – you know it’s for the best, but that doesn’t make it any easier. Caterpillar is working hard to develop equipment to help your agency meet the new regulations.

Of the $7.5 billion Caterpillar has invested in research and development during the last six years, much has gone toward developing Tier 4 compliant engines and machines.

Tier 4 standards, which require that emission of particulate matter (PM) and oxides of nitrogen (NOx) be reduced by more than 90 percent, and being phased in over the next five years.

Our goal at Caterpillar is to develop products that are safer, more efficient and environmentally responsible without sacrificing performance.

The 336E Hydraulic Excavator is a newly developed Tier 4 compliant machine that exemplifies the goal of reducing emissions without sacrificing power.

New Compliant Engines

The new 336E replaces the 336D, and features a more powerful engine for increased digging and lifting performance. With a net power rating of 317 hp, the 336E’s Cat C9 engine delivers 18 percent more power than the previous model.

Cat engineers are developing a full line of engines that meet new emission regulations. The Cat C3.4B, and C4.4 and C6.6 engines with ACERTTM Technology are the latest Tier 4 compliant engines. The new models range from 60 to 174 hp. Production and distribution is expected to begin prior to 2012.

The new engines join the C7.1 and C9.3 engines with ACERTTM Technology – 175 to 440 hp – which will be available this year (2010). Ten other Tier 4 compliant engines – all less that 66 hp – have already been released.

Contact Holt of California or log onto for more information about meeting Tier 4 emissions standards.