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Gasoline Direct Injection Engines and Particulate Emissions

  • Nikhil Sharma
  • Avinash Kumar AgarwalEmail author
Chapter
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Part of the Energy, Environment, and Sustainability book series (ENENSU)

Abstract

Gasoline direct injection (GDI) engines are increasingly used in transport sector worldwide in recent years due to the advantages they offer. These include superior fuel economy and better engine response and control due to introduction of electronic control unit (ECU) and high-pressure fuel injection system. One of the main challenges of using GDI engine vehicles is that they emit particulates, which are not an issue in case of multipoint port fuel injection (MPFI) engines. However, there is potential to further improve GDI engines for lower particulate matter (PM) emissions. Particulates from GDI engines are of different sizes such as coarse, fine and ultra-fine, and they also vary in composition and origin. The particulate of different sizes is known to cause adverse health effects. In this chapter, fundamental aspects of both homogeneous and stratified modes of combustion of GDI engines have been discussed, in addition to wall, spray and air-guided GDI engine concepts. A section of the chapter covers detailed comparison of particulate emitted by GDI and MPFI engines. Various size and concentration-based PM measurement techniques and instruments available commercially are included in this chapter. A discussion on influence of engine load, fuel type and spray characteristics on particulate emissions is elaborated towards the end of this chapter in addition to GDI soot morphological studies.

Keywords

Particulate matter Measuring techniques Legislation Health effects 

List of abbreviations

BMEP

Brake mean effective pressure

Dp

Diameter of primary soot particle

ECU

Electronic control unit

EGR

Exhaust gas recirculation

EGT

Exhaust gas temperature

ELPI

Electrical low-pressure impactor

FESEM

Field emission scanning electron microscope

FIP

Fuel injection pressure

GDI

Gasoline direct injection

GPF

Gasoline particulate filter

HRTEM

High-resolution transmission electron microscopy

IARC

International agency for research on cancer

IC

Internal combustion

ICP-OES

Inductively coupled plasma optical emission spectrometry

MPFI

Multipoint port fuel injection

PFI

Port fuel injection

PM

Particulate matter

WHO

World health organization

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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Engine Research Laboratory, Department of Mechanical EngineeringIndian Institute of Technology KanpurKanpurIndia

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