分会场

高效清洁燃烧

摘要

Diesel engines show poor performance and high emissions under cold-start conditions. The intake manifold burner is an effective method to increase the intake air temperature and improve engine performance. In this paper, a visualization system was employed to investigate the combustion process of the intake manifold burner. The effects of diesel flow rate and airflow velocity on combustion performance were investigated. The combustion process of the intake manifold burner showed four stages: preparing stage A, rapid development stage B, steady-development stage C, and stable stage D. Flame stripping was found in stage C and stage D, presenting the instability of combustion process. When fuel flow rate varying from 7.3 ml/min to 15.2 ml/min and air velocity ranging from 1.4 m/s to 2.4 m/s, the increase of diesel flow rate and air flow velocity was found to boost the combustion, leading to higher temperature rise in the combustion chamber. The temperature rise in the exhaust pipe showed better uniformity and more concentrated temperature distribution with the increasing distance away from the intake manifold burner.

关键词

intake manifold burner, flame, instability, preheat

电子U盘全文仅限大会已缴费参会代表下载。

您还没有登录，请您先 点击这里登录