Investigation of a DISI Fuel Injector for a Close-Arranged Spray-Guided Combustion System

B. Befrui; R. Kneer; S. Breuer; W. Reckers; D. Robart; H. Wanlin; C. Weiten

doi:10.4271/2002-01-1133

2002-03-04

Investigation of a DISI Fuel Injector for a Close-Arranged Spray-Guided Combustion System 2002-01-1133

The spray characteristics of a single-fluid pressure-swirl outward-opening DISI injector, with a nominal operating fuel pressure of 20 MPa. are presented for various ambient pressure and temperature conditions. These data include the experimental investigations of the spray structure and its temporal development with the aid of the imaging technique; PDA measurements of the temporal evolution of the droplet size - velocity characteristics; and the LIF-PLIF measurements of the spray liquid- and-vapor phases development. The experiments pertain to atmospheric and elevated ambient air conditions (P = 0.1 - 1.2 MPa., T = 20.° - 400.° C), representative of turbo-charged and high EGR engine operating conditions.

This injector is incorporated in a single-cylinder DISI engine in a “narrow-spacing” arrangement that adopts a spray-guided air-assisted stratified-charge combustion concept, labeled “direct injection spray and air controlled” (DISAC) combustion system. The preliminary combustion data, demonstrating the fuel-saving and emissions potential of the combustion system for lean-stratified operations are presented and discussed.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $33.00 Print $33.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Investigation of a DISI Fuel Injector for a Close-Arranged Spray-Guided Combustion System 2002-01-1133

SAE MOBILUS