THE INFLUENCE OF INTAKE VALVE CLOSE TIMING ON THE ENVIRONMENTAL PERFORMANCE OF A SPARK IGNITION ENGINE USING GASOLINE AND NATURAL GAS

IF 0.5 Q4 TRANSPORTATION SCIENCE & TECHNOLOGY

Transport Problems Pub Date : 2023-09-30 DOI:10.20858/tp.2023.18.3.15

Tadas VIPARTAS, Alfredas RIMKUS, Jonas MATIJOŠIUS

引用次数: 0

Abstract

The tightening of environmental requirements has forced car manufacturers to look for various ways to reduce exhaust gas emissions. The existing structural solutions of internal combustion engines allow this type of pollution to be reduced by adjusting the intake valve timing. This is especially relevant when it comes to reducing spark ignition engine emissions when using natural gas as fuel. In this study, a wide range of intake valve timing adjustments from 24° to 54° every six crank angle degrees was taken at a constant engine speed (n = 2500 rpm) and different loads and fixed excess air ratios (λ = 1). The changes in oxygen (O2), carbon monoxide (CO), carbon dioxide (CO2), nitrous oxide (NOx), methane (CH4), and propane (C3H8) gas emissions were observed in the aforementioned intake valve timing range.

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进气门关闭正时对汽油和天然气火花点火发动机环境性能的影响

环保要求的收紧迫使汽车制造商寻找各种方法来减少废气排放。现有的内燃机结构解决方案允许通过调整进气门正时来减少这种污染。当使用天然气作为燃料时，这尤其与减少火花点火发动机排放有关。在本研究中，在恒定发动机转速(n = 2500 rpm)、不同负载和固定过量空气比(λ = 1)的情况下，每6个曲柄角度进行24°至54°的进气门正时调整。在上述进气门正时范围内，观察了氧气(O2)、一氧化碳(CO)、二氧化碳(CO2)、氧化亚氮(NOx)、甲烷(CH4)和丙烷(C3H8)气体排放的变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Transport Problems TRANSPORTATION SCIENCE & TECHNOLOGY-

CiteScore

1.90

自引率

14.30%

发文量

审稿时长

48 weeks

期刊介绍： Journal Transport Problems is a peer-reviewed open-access scientific journal, owned by Silesian University of Technology and has more than 10 years of experience. The editorial staff includes mainly employees of the Faculty of Transport. Editorial Board performs the functions of current work related to the publication of the next issues of the journal. The International Programming Council coordinates the long-term editorial policy the journal. The Council consists of leading scientists of the world, who deal with the problems of transport. This Journal is a source of information and research results in the transportation and communications science: transport research, transport technology, transport economics, transport logistics, transport law.