Fuel Economy and Emissions of a 7L Common Rail Diesel Engine during Torque Rise Transient Process Tongji University

Format:

Conference/Event

Author/Creator:

Yang, Yang, author.

Contributor:

Hu, Zhiyuan

Lou, Diming

Ren, Hongjuan

Tan, Piqiang

Conference Name:

SAE 2015 World Congress & Exhibition (2015-04-21 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2015

Summary:

AbstractPrevious studies have indicated that longer torque increase time benefits the reduction of emissions during transient process for a diesel engine. However, quantitative conclusions on reduction of emissions and effects on fuel economy have not been made clear so far. The aim of this study was to evaluate the transient process of diesel engine under different torque increase time, and to find the quantitative statement between torque increase time, fuel economy and engine-out emissions. To do this, experiment was carried out on a 7L common rail diesel engine used for commercial vehicles. Three engine speeds (1100r·min1, 1300r·min1 and 1500r·min1) were chosen to represent an engine working range. For each speed, the engine torque is increased within different time (0.5s, 1s, 2s and 5s). It was shown that, in the transient process mentioned above, engine torque increase time effects fuel economy, smoke opacity and CO emission. For longer torque increase time, smoke opacity and CO could be significantly reduced, while at a cost of sacrificing fuel economy. However, torque increase time is not a determined reason for transient NOX emission

Notes:

Vendor supplied data

Publisher Number:

2015-01-1068

Access Restriction:

Restricted for use by site license