Effect of Open Valve Injection on PN Emission of PFI Engine

LIU Weichang; YANG Dianzhao

doi:10.3969/j.issn.1001-2222.2023.04.009

Vehicle Engine >

2023 , Vol. 0 >Issue 4: 53 - 57

DOI: https://doi.org/10.3969/j.issn.1001-2222.2023.04.009

Effect of Open Valve Injection on PN Emission of PFI Engine

LIU Weichang ,
YANG Dianzhao

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(1.Powertrain Development Department,Changan Ford Automobile Co.,Ltd.,Chongqing 400010,China;2.College of Mechanical and Vehicle Engineering,Chongqing University,Chongqing 400044,China)

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Abstract

The injection mode of intake port injection for gasoline engine is divided into open valve injection(OVI) and close valve injection(CVI), and OVI technology can reduce the particle number(PN) of engine emission under certain conditions. The principle of OVI technology in improving PN emission and the development process of OVI system were described, a control logic and calibration method of OVI system was proposed, the influence of injection timing on PN emission was studied, and finally the experiments were conducted to verify the effectiveness of OVI technology in improving PN emission and the reliability of OVI system under this control logic.

Key words： intake port fuel injection; gasoline engine; open valve injection; particle; injection timing

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LIU Weichang , YANG Dianzhao . Effect of Open Valve Injection on PN Emission of PFI Engine[J]. Vehicle Engine, 2023 , 0(4) : 53 -57 . DOI: 10.3969/j.issn.1001-2222.2023.04.009

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