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TECHNICAL PAPERS: Internal Combustion Engines

Numerical Analysis and Experimental Investigation of a Common Rail-Type Diesel Injector

[+] Author and Article Information
Marco Coppo, Claudio Dongiovanni, Claudio Negri

Dipartimento di Energetica, Polecnico di Torino, Turin, Italy

J. Eng. Gas Turbines Power 126(4), 874-885 (Nov 24, 2004) (12 pages) doi:10.1115/1.1787502 History: Received October 15, 2002; Revised September 01, 2003; Online November 24, 2004
Copyright © 2004 by ASME
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References

Figures

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Injection system layout
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Injector equivalent hydraulic circuit
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Control valve and relative equivalent hydraulic circuit
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Control piston-nozzle and relative equivalent hydraulic circuit
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Schematic of dynamic model of control piston needle
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Schematic of dynamic model of control valve
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Equivalent magnetic circuit
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Layout of the analyzed system
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Injector energizing current—model input
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Measured rail pressure versus reference value
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Test A (pr=135 MPa, ET=730 μs)
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Test B (pr=135 MPa, ET=280 μs)
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Test C (pr=80 MPa, ET=700 μs)
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Test D (pr=80 MPa, ET=300 μs)
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Theoretical effect of the control volume feeding hole
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Theoretical effect of the control volume discharge hole
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Theoretical effect of the control volume capacity
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Effect of control volume holes inlet geometry

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