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Stability evaluation of an accurately controllable multiple injection system

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Abstract

Aiming to further improve diesel engine fuel efficiency and exhaust emissions, we conducted tests of a newly devised rapidly operating secondary actuator that provides controllable multiple injection. Up to six shots per cycle were implemented under high-pressure injection. A high-speed camera and a flow rate metering system were used to obtain quantitative data regarding diesel spray and fuel flow dynamics. The advantages of the applied technique are very stable phasing, dwelling, duration, and dosing of multiple injection shots proved from data analysis.

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Abbreviations

ARB:

Arbitrary waveform generator

CRIS:

Common rail injection system

DC:

Direct current

ECU:

Electronic control unit

EDU:

Electronic injection driving unit

fps:

Frames per second

HP:

High-pressure

LDA:

Laser Doppler anemometer (velocimeter)

ROSA:

Rapidly operating secondary actuator

RPM:

Revolutions per minute

SOI:

Start of injection

TDC:

Top dead center

TTL:

Transistor–transistor logic

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Authors and Affiliations

  1. Combustion Dynamics Corporation, 499 Park Avenue, 20th Floor, New York, NY 10022, USA

    Murad M. Ismailov

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  1. Murad M. Ismailov
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Correspondence to Murad M. Ismailov.

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Ismailov, M.M. Stability evaluation of an accurately controllable multiple injection system. Exp Fluids 37, 177–186 (2004). https://doi.org/10.1007/s00348-004-0799-x

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  • DOI: https://doi.org/10.1007/s00348-004-0799-x

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