Whole-feed Combine Harvester—Evaluation Index and Measurement Methods for Fuel Consumption (Draft for Comments)

This draft applies to the fuel-consumption evaluation and testing of wheeled, tracked, and miniature whole-feed combine harvesters. It specifies three grades of fuel-consumption limits per unit area for wheat and rice: Grade 3 is the fuel-consumption limit, Grade 2 is the energy-saving evaluation limit, and Grade 1 is the premium energy-saving evaluation limit. Testing shall be conducted under specified meteorological, field, crop, and machine conditions, using compliant fuel and measuring instruments; fuel consumption shall be measured under prescribed operating conditions and averaged from three valid results. This revision proposes stricter grade limits, improved test conditions and measurement methods, and additional requirements for operating fluids and diesel-engine emissions.