4.7 Article

Study on knocking combustion in a diesel HCCI engine with fuel injection in negative valve overlap

Journal

FUEL
Volume 106, Issue -, Pages 478-483

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2012.10.071

Keywords

Homogeneous charge compression ignition (HCCI); Diesel engine; Knocking combustion; Harmonic analysis

Funding

  1. National Natural Science Foundation of China [51106098]

Ask authors/readers for more resources

This paper describes knocking combustion in a diesel homogeneous charge compression ignition (HCCI) engine. The knocking combustion was investigated by a harmonic analysis, and the complex logarithmic spectrum (CLS), calculated by Fast Fourier Transformation (FFT) based on the acquired in-cylinder pressure, was defined to evaluate the knocking intensity. The consistencies among maximum in-cylinder pressure, maximum pressure rise rate and knocking parameters of harmonic analysis were proved. The effects of engine load, speed, internal and external exhaust gas recirculation (EGR) on the knocking combustion in this HCCI diesel engine were experimentally studied. The results showed that the CLS in the range of 180th- to 350th-order harmonics was more sensitive to the knocking intensity, and the CLS increased with the increase in knocking intensity. The increasing of load, speed and internal EGR would increase the occurrence probability and intensity of the knocking combustion, but the increasing of the external EGR would decrease the occurrence probability. (C) 2012 Elsevier Ltd. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available