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Research Papers: Gas Turbines: Combustion, Fuels, and Emissions

Full-Parameter Approach for the Intake Port Design of a Four-Valve Direct-Injection Gasoline Engine

[+] Author and Article Information
Lei Cui

State Key Laboratory of Engines,
Tianjin University,
Weijin Road 92,
Tianjin City 300072, China
e-mail: cuilei@tju.edu.cn

Tianyou Wang

State Key Laboratory of Engines,
Tianjin University,
Weijin Road 92,
Tianjin City 300072, China
e-mail: wangtianyou@tju.edu.cn

Zhen Lu

State Key Laboratory of Engines,
Tianjin University,
Weijin Road 92,
Nankai District,
Tianjin City 300072, China
e-mail: luzhen@tju.edu.cn

Ming Jia

School of Energy and Power Engineering,
Dalian University of Technology,
Dalian City 116024, China
e-mail: jm2020jm@gmail.com

Yanzhe Sun

State Key Laboratory of Engines,
Tianjin University,
Weijin Road 92,
Tianjin City 300072, China
e-mail: sunyanzhe@tju.edu.cn

1Corresponding author.

Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received November 25, 2014; final manuscript received January 19, 2015; published online February 18, 2015. Editor: David Wisler.

J. Eng. Gas Turbines Power 137(9), 091502 (Sep 01, 2015) (11 pages) Paper No: GTP-14-1637; doi: 10.1115/1.4029686 History: Received November 25, 2014; Revised January 19, 2015; Online February 18, 2015

The design of the intake port plays a critical role in the development of modern internal combustion (IC) engines. The traditional method of the intake port design is a time-consuming process including a huge amount of tests and the production of core box. Compared with the traditional methods, parametric approach attracts increasing attentions by virtue of its high-efficiency, traceability, and flexibility. Based on a tangential port model created by a three-dimensional (3D) computer aided design (cad) software, a new tangential port can be quickly generated with different sets of structure parameters, then computational fluid dynamics (CFD) was employed to explore the influence of structure parameters on the intake port performance. The results show that the flow capacity and the large-scale vortex intensity change regularly with the variations of structure parameters. Finally, the parametric approach was employed to design the intake port of a production four-valve direct-injection (DI) gasoline engine, and the good applicability this approach is well illustrated.

Copyright © 2015 by ASME
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References

Figures

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Fig. 1

Major structure parameters of the tangential port template

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Fig. 2

Comparison between the two models (a) parametric intake port and (b) original intake port

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Fig. 3

Volume mesh of the calculation model (a) computational grid of the experimental comparison and (b) computational grid of the parametric analysis

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Fig. 4

Comparison between the experiment and the simulation (a) flow coefficient and (b) tumble intensity

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Fig. 6

Flow coefficient and tumble intensity of scheme 2

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Fig. 7

Flow distributions of scheme 2 at two different valve lifts (a) 7 mm and (b) 8 mm

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Fig. 8

Influence of parameter Av (scheme 1 as the reference)

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Fig. 9

Velocity contours of schemes 1 and 4 (at 8.5 mm valve lift) (a) Av = 60 deg and (b) Av = 90 deg

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Fig. 10

Influence of parameter Ab (scheme 5 as the reference)

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Fig. 11

Flow distributions of schemes 5 and 7 (a) Ab = 60 deg and (b) Ab = 90 deg

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Fig. 12

Influence of parameter Ar (scheme 2 as the reference)

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Fig. 13

Actual outlet flow area

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Fig. 14

Influence of parameter Ac (scheme 2 as the reference)

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Fig. 15

Flow distributions of schemes 2, 11–13 at 7 mm valve lift (a) Ac = 37.5 deg, (b) Ac = 4.25 deg, (c) Ac = 47.5 deg, and (d) Ac = 52.5 deg

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