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Many Machines for Many Jobs - Characterization of Today's Nonroad Diesel Industry
Related Topics
- Nonroad diesel equipment is used in a wide variety of applications including construction, farming, industrial, and airport services.
- Unlike other categories of mobile emission sources, the nonroad
diesel category applies to a very broad range of engine sizes,
types of equipment, and power ratings.
- Engine horsepower ranges from 3 to over 3,000 horsepower.
- The equipment in which these engines are used is extremely diverse, with often the same engine being used in widely varying equipment applications.
- For example, the same engine used in a backhoe can also be used in a drill rig or in an air compressor.
- Approximately 50 companies manufacture nonroad diesel engines worldwide. Many companies involved in the nonroad diesel industry are not "vertically integrated" - that is, they do not produce both engines and the equipment applications that the engines are used in. We have reflected this reality in the implementation of the Clean Air Nonroad Diesel Rule, which will ensure that both engine manufacturers and equipment manufacturers are able to provide clean new nonroad machines to end-users on schedule.
- The applications of nonroad diesel engines vary broadly depending
on the size of the engine. Below are common applications for each
of the major nonroad diesel engine size categories (in horsepower
[hp]):
- 0 to 25 hp: Refrigeration/air-conditioning units, commercial
mowers, mobile welders
- 25 to 75 hp: Bulldozers, fork lifts, agricultural tractors
- 75 to 175 hp: Tractors, backhoes, excavators
- 175 to 750 hp: Tractors, combines, road graders
- Above 750 hp: Generator sets, off-highway trucks, crawlers
- 0 to 25 hp: Refrigeration/air-conditioning units, commercial
mowers, mobile welders
- Nonroad diesel equipment is used to perform a wide range of work in many sectors of the economy.
- Over 650,000 pieces of nonroad diesel equipment covered by this rule are sold in the United States per year. There are about 6 million pieces of nonroad diesel equipment currently in use.
For further information or assistance regarding this web page, please contact the Assessment and Standards Division Information Line at (734) 214-4636 or E-mail: asdinfo@epa.gov.