| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 13441280 | Tribology International | 2020 | 9 Pages |
Abstract
This work presents a hybrid analytical-experimental method for determining overall power losses of automotive transmissions. The method consists of measuring load-independent losses and calculating load-dependent losses. Measurements and calculations are done at selected combinations of torque and rotational speed. The results are used for computing the coefficients of a quadratic equation that describes a best-fit surface. The equation is used for predicting the transmission power losses over the operating range defining a transmission efficiency map. The method was verified against power loss measurements of a light-duty six-speed automotive transmission showing a strong correlation between predictions and measurements. The proposed method can be used as an engineering tool to help drive improvements in transmission efficiency and in fuel economy.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Carlos H. Wink, Luigi Marson, Sweety Goyal,