Effects of hydrogen addition on cycle-by-cycle variations in a lean burn natural gas spark-ignition engine

Ma, Fenglong; Wang, Yu; Liu, Haiquan; Li, Yong; Wang, Junjun; Ding, Shurong

doi:10.1016/j.ijhydene.2007.10.043

Cited by 246 publications

(44 citation statements)

References 20 publications

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“…The smoke concentration increases with an increase in the EGR ratio since oxygen concentration is lower when the re-circulated exhaust gas is added more. After being validated with previous research work [7], [8], this paper has the same trend of smoke and NO x with their results, but the change magnitude is different due to different amounts of hydrogen.…”

Section: Resultssupporting

confidence: 73%

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Hydrogen-Rich Gas for Clean Combustion in a Dual-Fuel Compression Ignition Engine

Wu¹,

Hsu²,

Horng³

2017

JOCET

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Abstract-Since burning of hydrogen emits fewer pollutants, it has been using as a clean alternative or auxiliary fuel of engines. This study is to develop a diesel/ hydrogen-rich gas dual fuel engine with methanol steam reforming method and design of EGR (Exhaust Gas Recirculation) system to investigate engine performance and exhausting pollutants. The measured items are composed of the gas pressure of cylinder, crank angle, diesel consumption rate, hydrogen consumption rate, air flow rate, and emissions (HC, CO 2 , NO x , and Smoke), and the contents of hydrogen-rich gas. The authors analyze how the hydrogen-rich gas addition with EGR influences the combustion performance and emissions. The heat recovery reforming system can solve the storage and producing problem of hydrogen. Furthermore, the authors little altered the engine structure, and it is easy to put the energy saving and pollutants decrease into effect.Index Terms-Clean combustion, diesel/hydrogen-rich gas engine, emission reduction, exhaust heat recovery, exhaust gas recirculation, methanol steam reforming.

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Section: Resultssupporting

confidence: 73%

“…Compared with common fuels, hydrogen has the characteristics of a long term renewable, recyclable and non-polluting fuel because it contains no carbon [7]- [9]. Furthermore, it had the characteristics of higher flame speed and larger diffusion speed benefit the energy efficiency and reduces emissions.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen-Rich Gas for Clean Combustion in a Dual-Fuel Compression Ignition Engine

Wu¹,

Hsu²,

Horng³

2017

JOCET

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“…The impact of hydrogen addition to natural gas on cycle-by-cycle variations have been investigated in many scientific activities and the results showed that the coefficient of variation in maximum pressure and in indicated mean effective pressure are reduced with increasing hydrogen content, both with lean air-to-fuel ratio as well described by Ma et al (2008) in Figure 11 and Wang et al (2008) and with large exhaust gas recirculation ratio values, Figure 12 ).…”

Section: The Impact Of Hcng Blends On Engine Efficiency and Exhaust Ementioning

confidence: 99%

A Review of Hydrogen-Natural Gas Blend Fuels in Internal Combustion Engines

Mariani¹,

Morrone²,

Unich³

2012

Fossil Fuel and the Environment

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“…Lean operation can decrease the CO and NOx emissions while simultaneously improving engine efficiency. A compromise must be made so that significant reduction in emissions can be made without sacrificing the burn quality of the fuel which may include slow flame propagation, increased cycle by cycle variations and incomplete combustion which may be more clearly explained in Ma et al (2008a), Ma et al (2008e) and Ma et al (2008f). …”

Section: Lean Burnmentioning

confidence: 99%