TOPICS

Discrepancies between type-approval and real-world fuel consumption and CO2 values in 2001-2011 European passenger cars

This paper compares fuel consumption / CO2 values of passenger cars from different sources and aims at quantifying the discrepancy between laboratory type-approval values and real-world values, including a retrospective analysis for the years 2001-...

Inertia classes, vehicle emissions tests, and the dead hand of the past

Vehicle test mass definition and inertia mass step-less approach

This paper is ICCT’s 4th contribution to the UNECE GRPE informal subgroup on the development of a worldwide harmonized light vehicles test procedure (WLTP-DTP).

Estimated Cost of Gasoline Particulate Filters

Based on an assessment of production costs for two GPF designs, we estimate for a 2.0L gasoline engine a cost of $106 for a stand-alone GPF and between $114 and $154 for a four-way catalyst, presented here as a three-way catalyst (TWC) with PM...

Inertia classes proposal

Builds on more detailed explanations in past WLTP doucments and presents, for discussion, a proposal for defining inertia classes for the WLTP GTR.

Inertia classes in worldwide harmonized light vehicle test procedure (WLTP) development

This paper was submitted to the UNECE GRPE informal subgroup on the development of a worldwide harmonized light vehicles test procedure (WLTP-DTP) on the issue of inertia classes to be used in the development of the WLTP.