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Progress of Direct Injection and Jet Ignition in Throttle-Controlled Engines

Journal Article
2019-26-0045
ISSN: 2641-9645, e-ISSN: 2641-9645
DOI: https://doi.org/10.4271/2019-26-0045
Published January 09, 2019 by SAE International in United States
Progress of Direct Injection and Jet Ignition in Throttle-Controlled Engines
Sector:
Citation: Boretti, A., "Progress of Direct Injection and Jet Ignition in Throttle-Controlled Engines," SAE Int. J. Adv. & Curr. Prac. in Mobility 1(1):61-66, 2019, https://doi.org/10.4271/2019-26-0045.
Language: English

Abstract:

Direct injection and jet ignition is becoming popular in electrically assisted, turbocharged, F1 engines because of the pressure to reduce fuel consumption. Operation from homogeneous stoichiometric up to lean of stoichiometry stratified about λ = 1.5, occurs with fast combustion of reduced cyclic variability thanks to the enhanced ignition by multiple jets of hot, partially reacting products travelling through the combustion chamber. The fuel consumption has thus been drastically reduced in an engine that is, however, still mostly throttle controlled. The aim of the present paper is to show the advantages of direct injection and jet ignition based on model simulations of the operation of a high-performance throttle-controlled engine featuring rotary valves.

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