Reduction of NOx and PM for a Heavy Duty Diesel Using 50% EGR Rate in Single Cylinder Engine New Ace Inst Co Limited

Format:

Conference/Event

Author/Creator:

Osada, Osada, author.

Contributor:

Aoyagi, Yuzo

Goto, Yuichi

Shimada, Kazuaki

Suzuki, Hisakazu

Conference Name:

SAE 2010 World Congress & Exhibition (2010-04-13 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2010

Summary:

For reducing NOx emissions, EGR is effective, but an excessive EGR rate causes the deterioration of smoke emission. Here, we have defined the EGR rate before the smoke emission deterioration while the EGR rate is increasing as the limiting EGR rate. In this study, the high rate of EGR is demonstrated to reduce BSNOx. The adapted methods are a high fuel injection pressure such as 200 MPa, a high boost pressure as 451.3 kPa at 2 MPa BMEP, and the air intake port that maintains a high air flow rate so as to achieve low exhaust emissions. Furthermore, for withstanding 2 MPa BMEP of engine load and high boosting, a ductile cast iron (FCD) piston was used. As the final effect, the installations of the new air intake port increased the limiting EGR rate by 5%, and fuel injection pressure of 200 MPa raised the limiting EGR rate by an additional 5%. By the demonstration of increasing boost pressure to 450 kPa from 400 kPa, the limiting EGR rate was achieved to 50%. At the same time, BSNOx was reduced to 1.0 g/kWh from 3.5 g/kWh at 2 MPa BMEP with no increase in smoke emission and particulate matter (PM). The technologies developed in this study are not only to reduce exhaust emissions but also useful and available to improve brake-specific fuel consumption for both single-cylinder and multi-cylinder heavy duty diesel engines

Notes:

Vendor supplied data

Publisher Number:

2010-01-1120

Access Restriction:

Restricted for use by site license