INVESTIGATION OF INJECTION TIMING ON PERFORMANCE AND EXHAUST EMISSIONS IN A MPFI GASOLINE ENGINE

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OMI F.A.; MOVAHEDNEZHAD E.; HOSSEIN ALIPOUR M.

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Journal: AMIRKABIR Year:2007 | Volume:17 | Issue:65-B Page(s): 53-60

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Title

INVESTIGATION OF INJECTION TIMING ON PERFORMANCE AND EXHAUST EMISSIONS IN A MPFI GASOLINE ENGINE

Author(s)

OMI F.A. | MOVAHEDNEZHAD E. | HOSSEIN ALIPOUR M. | Issue Writer Certificate

Keywords

ENGINEQ3

INJECTORQ2

INJECTION TIMINGQ3

EMISSIONQ1

PERFORMANCEQ2

Abstract

For spark ignition ENGINEs, the fuel-air mixture preparation process is known to have a significant influence on ENGINE PERFORMANCE and exhaust EMISSIONs. In this paper, an experimental study is made to characterize the spray characteristics of an INJECTOR with multi-disc nozzle used in the ENGINE. The distributions of the droplet size and velocity and volume flux were characterized by a PDA system. Also a model of a 4 cylinders multi-point fuel injection ENGINE was prepared using a fluid dynamics code. By this code one-dimensional, unsteady, multiphase flow in the intake port has been modeled to study the mixture formation process in the intake port. In addition, one-dimensional air flow and wall fuel film flow and a two-dimensional fuel droplet flow have been modeled, including the effects of in-cylinder mixture back flows into the port. The accuracy of model was verified using experimental results of the ENGINE testing showing good agreement between the model and the real ENGINE. As a result, predictions are obtained that provide a detailed picture of the air-fuel mixture properties along the intake port. A comparison was made on ENGINE PERFORMANCE and exhaust EMISSION in different fuel INJECTION TIMING for 2600 and 6000 rpm and different loads. According to the present investigation, optimum INJECTION TIMING for different ENGINE operating conditions was found.

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APA: Copy

OMI, F.A., MOVAHEDNEZHAD, E., & HOSSEIN ALIPOUR, M.. (2007). INVESTIGATION OF INJECTION TIMING ON PERFORMANCE AND EXHAUST EMISSIONS IN A MPFI GASOLINE ENGINE. AMIRKABIR, 17(65-B), 53-60. SID. https://sid.ir/paper/908/en

Vancouver: Copy

OMI F.A., MOVAHEDNEZHAD E., HOSSEIN ALIPOUR M.. INVESTIGATION OF INJECTION TIMING ON PERFORMANCE AND EXHAUST EMISSIONS IN A MPFI GASOLINE ENGINE. AMIRKABIR[Internet]. 2007;17(65-B):53-60. Available from: https://sid.ir/paper/908/en

IEEE: Copy

F.A. OMI, E. MOVAHEDNEZHAD, and M. HOSSEIN ALIPOUR, “INVESTIGATION OF INJECTION TIMING ON PERFORMANCE AND EXHAUST EMISSIONS IN A MPFI GASOLINE ENGINE,” AMIRKABIR, vol. 17, no. 65-B, pp. 53–60, 2007, [Online]. Available: https://sid.ir/paper/908/en

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