Influence of Small Pilot on Main Injection in a Heavy-Duty Diesel Engine

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Influence of Small Pilot on Main Injection in a Heavy-Duty Diesel Engine. / Jorques Moreno, Carlos; Stenlåås, Ola; Tunestål, Per.

SAE Technical Paper. 2017. 2017-01-0708 (SAE Technical Paper Series).

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceeding

Harvard

Jorques Moreno, C, Stenlåås, O & Tunestål, P 2017, Influence of Small Pilot on Main Injection in a Heavy-Duty Diesel Engine. i SAE Technical Paper., 2017-01-0708, SAE Technical Paper Series, SAE World Congress Experience 2017, Detroit, USA, 2017/04/04. https://doi.org/10.4271/2017-01-0708

APA

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Jorques Moreno C, Stenlåås O, Tunestål P. 2017. Influence of Small Pilot on Main Injection in a Heavy-Duty Diesel Engine. I SAE Technical Paper. Article 2017-01-0708. (SAE Technical Paper Series). https://doi.org/10.4271/2017-01-0708

MLA

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Jorques Moreno, Carlos ; Stenlåås, Ola ; Tunestål, Per. / Influence of Small Pilot on Main Injection in a Heavy-Duty Diesel Engine. SAE Technical Paper. 2017. (SAE Technical Paper Series).

RIS

TY - GEN

T1 - Influence of Small Pilot on Main Injection in a Heavy-Duty Diesel Engine

AU - Jorques Moreno, Carlos

AU - Stenlåås, Ola

AU - Tunestål, Per

PY - 2017/3/28

Y1 - 2017/3/28

N2 - Factors influencing the effect of pilot-injection on main-injection combustion were investigated using heat release analysis in a heavy-duty diesel engine fuelled with standard diesel fuel, and included the effect of those factors on engine performance and emissions.Combinations of pilot injection parameters i.e. pilot start of injection, pilot mass, pilot-main injection separation, and rail pressure were studied for various operating conditions and combustion phases.It was concluded that the effect of pilot-injection combustion on main injection can be studied based on the phase of pilot combustion at the start of main injection. Four cases were identified: a) main injection during the mixing phase of pilot injection; b) main injection during the premixed phase of pilot combustion; c) main injection during the diffusive phase of pilot combustion and d) main injection after pilot combustion was completed.The effect of pilot injection was illustrated by the conceptual model of interaction modes. This approach has the advantage that the effect of each mode on the main injection is independent of the pilot injection parameters. For combustion control stability and convergence reasons, it is important to consider the transition between the four different interaction modes in regard to variances in the chamber conditions, pilot injected mass and pilot injection combustion.

AB - Factors influencing the effect of pilot-injection on main-injection combustion were investigated using heat release analysis in a heavy-duty diesel engine fuelled with standard diesel fuel, and included the effect of those factors on engine performance and emissions.Combinations of pilot injection parameters i.e. pilot start of injection, pilot mass, pilot-main injection separation, and rail pressure were studied for various operating conditions and combustion phases.It was concluded that the effect of pilot-injection combustion on main injection can be studied based on the phase of pilot combustion at the start of main injection. Four cases were identified: a) main injection during the mixing phase of pilot injection; b) main injection during the premixed phase of pilot combustion; c) main injection during the diffusive phase of pilot combustion and d) main injection after pilot combustion was completed.The effect of pilot injection was illustrated by the conceptual model of interaction modes. This approach has the advantage that the effect of each mode on the main injection is independent of the pilot injection parameters. For combustion control stability and convergence reasons, it is important to consider the transition between the four different interaction modes in regard to variances in the chamber conditions, pilot injected mass and pilot injection combustion.

U2 - 10.4271/2017-01-0708

DO - 10.4271/2017-01-0708

M3 - Paper in conference proceeding

T3 - SAE Technical Paper Series

BT - SAE Technical Paper

Y2 - 4 April 2017 through 6 April 2017

ER -