Mixture Formation and Combustion Performance in a New Direct-Injection SI V-6 Engine

Hiroshi Tatsuta; Motohiro Matsumura; Jyunichi Yajima; Hiroto Nishide

doi:10.4271/981435

1998-05-04

Mixture Formation and Combustion Performance in a New Direct-Injection SI V-6 Engine 981435

One advantage of a direct-injection S.I. engine is lower fuel consumption due to the use of lean stratified charge combustion. Another advantage is greater power output resulting from evaporation of the fuel in the cylinder. A critical factor in making the most of these advantages is to achieve optimum mixture formation for both stratified and homogeneous charge combustion.

To achieve the optimum mixture, the new direct-injection S.I. V-6 engine adopts a piston with a shallow bowl, a valve that changes in-cylinder air motion between swirl and tumble by opening and closing one side of separated air intake port, an air intake port that has optimized inward and port angle to induces swirl in the piston bowl, and a CASTING NET injector that injects the hollow cone spray in a deflected pattern toward the spark plug.

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

Mixture Formation and Combustion Performance in a New Direct-Injection SI V-6 Engine 981435

SAE MOBILUS