Regulations for Emissions from Heavy Equipment with Spark-Ignition Engines

• Overview
• List of related e-CFR links
• List of related regulations

Overview

This page provides regulations for nonroad spark-ignition (SI) engines over 19 kW (25 horsepower), including many kinds of equipment, such as forklifts, generators, and many other farm, industrial and construction applications. These engines may operate on propane, gasoline, or natural gas.

List of Related e-CFR Links

See the Electronic Code of Federal Regulations (e-CFR) for the full text of current regulations that apply to Large SI engines.

Searchable/Sortable Table Instructions

The table default is to show all table entries. To change the number of entries shown, click the drop-down arrow next to the word "All".

The column with the blue arrow indicates which column your table is sorted by.
For example, if you saw the image below, the table would be sorted in ascending order on the "Technology Type" column.

To change which column your table is sorted by, click an arrow in another column.
For example, if you wanted to sort by descending order on the "Applicable for" column in the image below, you would click the down arrow.

You can filter the table using the Search box. Start typing in the search box and your table will automatically display only rows that contain what you entered in the search box.

List of Related Regulations

Below is a list of all regulations related to emissions from heavy equipment with spark-ignition engines.

• Rule summaries;
• Regulatory impact analyses;
• Comment summaries;
• Rule histories (including proposed rules); and 
• Fact sheets.*

*Note: Rule-related materials vary by rule.