Experimental study of combustion improvement in heterogeneous combustion field by using new type multi-impinging injection system Hosei University

Format:

Book

Conference/Event

Author/Creator:

Liu, Jinru, author.

Contributor:

Aoki, Hiroki

KAWAKAMI PhD, Tadashige

Oiwa, Ryosuke

Suzuki, Tatsu

Conference Name:

SAE Powertrains, Fuels & Lubricants Meeting (2020-09-22 : Krakow, Poland)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2020

Summary:

Global environmental problems and global energy saving problems became very serious. Furthermore, it is very important to realize super low emissions under the all load conditions at any kind of engine types. It is a common knowledge that the fuel direct injection method has been widely used on internal combustion engine for reduction of combustion products and high thermal efficiency. However, it is important to notice the problems which the fuel adhere on the chamber wall surface and the unburned components. From these points, our previous researches had been carried out to determine the effects of injection timing on the combustion characteristics (combustion behavior, maximum burning pressure and heat release rate) for the heterogeneous combustion field by using impinging injection and the impinging injection can reduce the unburned components on the wall surface by the effect of collision between the fuel sprays. Next step in this study, experiments have been carried out to examine the effects of fuel distribution and the motion of fuel sprays by using impinging injection and new developing multi-impinging fuel injection system with different fuel types in the heterogeneous combustion field. The new multi-impinging fuel injection system can control the mixture ratio in the heterogeneous combustion field by changing the injection pressure and two step injection timing. Furthermore, to examine the effects of droplets distribution on the heat release rate and combustion efficiency, impinging injection spray and combustion behaviors are observed by the laser diffraction spray analyzer (LDSA) and the high-speed video camera. The main conclusions are as follows:1) It is possible to improve the combustion characteristics under heterogeneous combustion field by using the new developing multi-impinging fuel injection. 2) The most suitable conditions of the injection timing and the amount of fuel injection ratio exist for combustion improvement by using the multi-impinging fuel injection

Notes:

Vendor supplied data

Publisher Number:

2020-01-2105

Access Restriction:

Restricted for use by site license