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Article: Big emissions technology in small package: two models in new Yanmar L series line incorporate rudimentary EGR for Tier 2.(diesel engines)
- Article from:
- Diesel Progress North American Edition
- Article date:
- March 1, 2004
- Author:
CopyrightCOPYRIGHT 2004 Diesel & Gas Turbine Publications. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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While most of the heat and light being generated by tightening emissions regulations has been in heavy-duty on-highway trucks and larger off-highway and industrial markets, virtually all engines large and small face their own emissions challenges.
For small diesel engines under 10.8 hp (8 kW), that next hurdle is Tier 2, arriving Jan. 1, 2005, when the emissions restrictions Fall to 5.8 g/bhp-hr CO, 5.5 g/bhp-hr NMHC and N[O.sub.x] and 0.58 g/bhp-hr PM.
To meet these new challenges, Yanmar has developed a new generation in its L series line of single-cylinder engines designed to meet the new emissions standards while maintaining the same reliability, and ...