Modelling Diesel Engine Natural Gas Injection: Injector/Cylinder Boundary Conditions University of Waterloo

Format:

Conference/Event

Author/Creator:

Zhang, Jianfang, author.

Conference Name:

International Congress & Exposition (1994-02-28 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1994

Summary:

Direct injected natural gas diesel engines are currently being developed. Numerical analyses results are presented for 20.0 MPa ( 3000 psia; 200 atm), 444 K, natural gas injection into 4.0 MPa cylinder air where the ambient turbulence field is representative of diesel engines. Two very important non-intuitive, observations are made. First, the seemingly reasonable spatially uniform velocity profile currently used at the injector exit is not appropriate, rather a double-hump profile is correct. Second, a spatially uniform, injector exit, temperature profile results in local temperature overestimates as large as 300 K. Considering the strong role of temperature on chemical kinetics, this second observation may have profound implications on the validity of conclusions reached using uniform exit profiles

Notes:

Vendor supplied data

Publisher Number:

940329

Access Restriction:

Restricted for use by site license