Worldwide Harmonised Light Vehicles Test Procedure
| This article is part of a series on |
| Driving cycles |
|---|
| Europe |
|
NEDC: ECE R15 (1970) / EUDC (1990) (UN ECE regulations 83 and 101) |
| United States |
| EPA Federal Test: FTP 72/75 (1978) / SFTP US06/SC03 (2008) |
| Japan |
| 10 mode (1973) / 10-15 Mode (1991) / JC08 (2008) |
| China |
| CLTC (2021) |
| Global Technical Regulations |
| WLTP (2015) (Addenda 15) |
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This article was last edited by DmitryKo (talk | contribs) 12 years ago. (Update timer) |
The Worldwide harmonized Light vehicles Test Procedure (WLTP) is a global harmonized driving cycle for light-duty vehicles (passenger cars and light commercial vans) intened for measurements of fuel economy and tailpipe emissions.
It is being developed by experts from the European Union, United States, India, China and Japan under guidelines of UNECE World Forum for Harmonization of Vehicle Regulations.
Final version is expected in 2013-2014.
The test procedure will provide much stricter guidance regarding dynamometer test conditions, gear shifting, total car weight, and tire selection than existing tests
Driving cycle
The Harmonized Driving Cycle consists of four phases - Low, Middle, High, Ex-High - each representing different driving styles; maximum speed is based on power-weight ratio (rated engine power in W / kerb weight in kg).
High-power class 3 vehicles with ratio > 34 are tested in all four phases, class 2 vehicles with 22 < ratio <= 34 exclude Ex-High phase, and low power class 1 vehicles with ratio < 22 are only tested in Low and Middle phases.
| | Low | Middle | High | Ex-High | Total L/M/H | Total L/M/H/Ex-H |
|---|---|---|---|---|---|---|
| Time in s | 589 | 433 | 455 | 323 | 1477 | 1800 |
| Distance, km | 3 | 5 | 7 | 7.7 | 15 | 22.7 |
| Max Speed, km/h | 56.5 | 76.6 | 97.4 | 131.3 | 97.4 | 131.3 |
References