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Emission Standards

China: 3-Wheel Vehicles and Low Speed Trucks

Phase I and Phase II emission standards for 3-wheeled vehicles and low speed trucks with diesel engines are detailed in GB19756-2005, Limits and measurement methods for exhaust pollutants of diesel engines for three-wheeled vehicles and low-speed trucks (China Phase I and II) published in May 2005.

A “three-wheeled vehicle” (formerly “three-wheeled agricultural transport vehicle”) is a three-wheeled truck with a maximum design speed of 50 km/h or less. A “low-speed truck” (formerly “four-wheeled agricultural transport vehicle”) is a truck with a maximum design speed of less than 70 km/h and that has four wheels. Certification and conformity of production (COP) emission limits for these vehicles having diesel engines are summarized in Table 1. Testing is carried out using the 13 mode ECE R49 steady state cycle.

Table 1
Certification and COP emission limits for 3-wheeled vehicles and low speed trucks with diesel engines. COP values in parenthesis.
PhaseDateCOHCNOxPM
g/kWh
Phase INew types: 2006.01
All: 2007.01
11.2 (12.3)2.4 (2.6)14.4 (15.8)-
Phase IINew types: 2007.01
All: 2008.01
4.5 (4.9)1.1 (1.23)8.0 (9.0)0.61 (0.68)

The standard, GB19756-2005, also places limits on the maximum air intake resistance, exhaust back pressure and power absorbed by engine accessories. These vehicles are also subject to noise limits found in GB19757-2005.