{"data":{"id":"us/40-cfr-appendix-c-of-part-1036","jurisdiction":"us","citation":"40 CFR Appendix C of Part 1036","heading":"Appendix C of Part 1036—Default Engine Fuel Maps for § 1036.540","body":"GEM contains the default steady-state fuel maps in this appendix for performing cycle-average engine fuel mapping as described in § 1036.505(b)(2). Note that manufacturers have the option to replace these default values in GEM if they generate a steady-state fuel map as described in § 1036.535(b).\n(a) Use the following default fuel map for compression-ignition engines that will be installed in Tractors and Vocational Heavy HDV:\nTable 1 of Appendix C—Default Fuel Map for Compression-Ignition Engines Installed in Tractors and Vocational Heavy HDV\n(b) Use the following default fuel map for compression-ignition engines that will be installed in Vocational Light HDV and Vocational Medium HDV:\nTable 2 of Appendix C—Default Fuel Map for Compression-Ignition Engines Installed in Vocational Light HDV and Vocational Medium HDV\n(c) Use the following default fuel map for all spark-ignition engines:\nTable 3 of Appendix C—Default Fuel Map for Spark-Ignition Engines","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER U—AIR POLLUTION CONTROLS","PART 1036—CONTROL OF EMISSIONS FROM NEW AND IN-USE HEAVY-DUTY HIGHWAY ENGINES"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"6e508e7c495e5ea27a4335ed13ba63f3e3476b4cadf9ab91325e5c7aea3d829e","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-appendix-b-to-part-1036","next":"us/40-cfr-1037.1"},"notice":"GroundRules: Original legal text. Not legal advice."}