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Spray development with in-cylinder pressure and particulate matter measurements in a GDI engine with optical access: Effects of fuel volatility

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conference contribution
posted on 11.05.2020, 10:56 by S Hanis, Joe Camm, M Davy, R Stone
Particulate matter emissions are subject to legislation and can occur at significantly higher levels with Gasoline Direct Injection (GDI) engines than Port Fuel Injection (PFI) engines. This has to be linked to mixture preparation for which the fuel spray behaviour is fundamental. Spray behaviour is characterised here in terms of the saturation pressure ratio - the ratio of fuel saturation pressure to the in-cylinder pressure which can vary significantly during the cycle; especially when the engine is boosted. Mie scattering images with semi-quantitative analysis is used to quantify spray development, along with the use of a presence probability analysis. The particulate measurement experiments (using a Cambustion DMS500) show that fuel volatility has a beneficial impact on reducing particulate matter emissions, even if flash boiling does not occur. Flash boiling did not necessarily reduce the particulate number but it did reduce the mean particulate size.

Funding

Jaguar Land Rover

EPSRC

Malaysian Ministry of Higher Education

University of Oxford Clarendon Fund

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Published in

Institution of Mechanical Engineers - Fuel Systems Engines Conference 2018

Pages

131 - 140

Source

Fuel Systems - Engines

Publisher

Institution of Mechanical Engineers (IMechE)

Version

AM (Accepted Manuscript)

Rights holder

© The Authors

Publisher statement

© The Authors, 2018. The definitive version of this article is published in FUEL SYSTEMS - ENGINES, Institution of Mechanical Engineers, 2018.

Acceptance date

16/10/2018

Publication date

2019-01-01

Copyright date

2018

ISBN

9781510883482

Language

en

Location

London, UK

Event dates

4th December 2018 - 5th December 2018

Depositor

Dr Joe Camm. Deposit date: 7 May 2020

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