Measurement of Turbulent Flow in the Combustion Chamber of a D.I. Diesel Engine

Akira Murakami; Masatsugu Sakimoto; Masataka Arai; Hiroyuki Hiroyasu

doi:10.4271/900061

1990-02-01

Measurement of Turbulent Flow in the Combustion Chamber of a D.I. Diesel Engine 900061

This paper presents the experimental analysis for the turbulence in the combustion chamber of a direct injection (D.I.) diesel engine.

A dual beam mode, forward-scattering laser doppler velocimeter was applied to the flow measurement in a four-stroke, single-cylinder direct injection diesel engine of 110 mm bore and 125 mm stroke. The turbulence component was separated from instantaneous velocity using a high-pass filter.

As a result, the difference in turbulent intensity between the intake and compression processes was discussed. Also, the effect of intake port and piston cavity shapes, the compression ratio and the engine speed on the turbulent intensity were clarified. In addition, the empirical equation for the decay of turbulent intensity in the compression process was expressed by a function of the Reynolds number based on the mean swirling flow.

SAE MOBILUS

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

Access SAE MOBILUS »

Digital $37.00 Print $37.00

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

Measurement of Turbulent Flow in the Combustion Chamber of a D.I. Diesel Engine 900061

SAE MOBILUS