Article ID Journal Published Year Pages File Type
4916988 Applied Energy 2017 10 Pages PDF
Abstract
This paper presents the results of the experimental investigation on the effect of cyclic transient loads on a turbocharged diesel engine with respect to fuel efficiency and NOx emissions. The transient loads in this test program are time varying torque in the form of a sinusoidal wave with a fixed amplitude at different frequencies and different mean values. The measurements from the transient tests are compared to the cases of constant loads and to estimations provided by a quasi-steady mapping. The largest influences are found at the lowest mean load (24.6%) and the highest frequency (0.2 Hz). For fuel efficiency, the transient deviation is 6.7%, while the estimation error is −2.9%. For NOx measurement in volume fraction, they are −9.1% and 4.3%, respectively. The results also show that the magnitude of the effect grows as the mean power load decreases. Finally, a graphical method is presented to evaluate the effect of load shifting operations for a diesel engine using the steady-state fuel consumption rate curve.
Related Topics
Physical Sciences and Engineering Energy Energy Engineering and Power Technology
Authors
, , ,