GB/T 20969.4-2021
Special environmental condition—Machinery for plateau—Part 4:Guide rule of test for plateau natural environment—Internal combustion engines (English Version)

Scope: This document specifies the test guidelines for internal combustion-powered machinery under natural environmental conditions on a plateau at an altitude of 2000m~5000m. This document is applicable to the performance test and reliability test of internal combustion power machinery for engineering machinery under plateau natural environment conditions.

GB/T 20969.4-2021 Referenced Document

GB 20891 "Limits and Measurement Methods of Exhaust Pollutants from Diesel Engines for Non-road Mobile Machinery (China Phase III and Phase IV)" (GB 20891-2014) Amendment Sheet
GB 36886 Limit and measurement methods for exhaust smoke form non-road mobile machinery equipped with diesel engine
GB/T 20969.1-2021 Special environmental condition—Machinery for plateau—Part 1: Requirements for internal combustion engines on plateau
GB/T 28239 Limits and measurement methods for non-road diesel engine specific fuel consumption
GB/T 6072.1 Reciprocating internal combustion engines.Performance.Part 1:Declarations of power,fuel and lubricating oil consumptions and test methods.Additional requirements for engines for general use
JB/T 4198.1 Construction machinery.Diesel engine.Technical specifications
JB/T 4198.2-2020 Construction machinery.Mehtod of performance test for diesel engines

2021 GB/T 20969.4-2021 Special environmental condition—Machinery for plateau—Part 4:Guide rule of test for plateau natural environment—Internal combustion engines
2008 GB/T 20969.4-2008 Special environmental condition.Machinery for plateau.Part 4:Guide rule of test for plateau natural environment.Internal combustion engines