Effect of hydrogen proportion on lean burn performance of a dual fuel SI engine using hydrogen direct-injection

Niu, Renxu; Yu, Xiumin; Du, Yaodong; Xie, Hanguang; Wu, Hailin; Sun, Yao

doi:10.1016/j.fuel.2016.09.021

Cited by 113 publications

(29 citation statements)

References 28 publications

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“…of hydrogen [134]. Hydrogen addition could also extend the EGR limit under lean-burn conditions [136].…”

Section: Extended Lean Burn Limitmentioning

confidence: 99%

“…In particular, hydrogen has significantly higher flame velocity, wider flammability limit, lower ignition energy and faster diffusion rate than gasoline [133], and thus has been extensively investigated for extending the lean burn limit of SI engines. Experiments on a gasoline PFI plus hydrogen DI engine showed that hydrogen addition increased thermal efficiency and reduced cyclic variation under lean conditions [128,134,135]. The lean burn limit increased with hydrogen DI ratio and could reach an excess air ratio (λ) of 2.65 with 10.5%…”

Section: Extended Lean Burn Limitmentioning

confidence: 99%

“…Yu and co-workers carried a series of works on the lean burn performance of GPI+HDI engines. Compared with GPI, GPI+HDI effectively improved the thermal efficiency, expanded the lean burn limit and reduced the cyclic variation [134,135,165]. In addition, GPI+HDI had better ignition reliability during cold start [166] and extended the EGR limit [136] than GPI.…”

Section: Hydrogen-gasoline Dual Injection Enginesmentioning

confidence: 99%

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Dual injection: An effective and efficient technology to use renewable fuels in spark ignition engines

Huang

Surawski

Zhuang

et al. 2021

Renewable and Sustainable Energy Reviews

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Modern spark ignition engines mostly use one injection system to deliver gasoline into the combustion chamber, using either direct injection or port fuel injection. Both technologies have their respective advantages. To integrate their advantages and to promote the use of renewable fuels, dual injection engines are in development in recent years. Dual injection represents an advanced combustion system and is a novel technology to address the urgent issues of sustainability and environmental protection. This study reviews the state-of-the-art research on dual injection spark ignition engines with a focus on renewable fuels, their advantages and engine performance. The main advantages of dual injection include greater control flexibility, enhanced cooling effect, knock mitigation, engine downsizing, extended lean-burn limits, higher thermal efficiency and reductions of several emission species. The most promising renewable fuels for dual injection are ethanol, methanol and hydrogen. Each renewable fuel is aimed at different advantages of dual injection.Alcohol-gasoline dual injection provides great anti-knock ability by taking advantage of alcohols' large enthalpies of vaporisation and high octane numbers, while hydrogen-gasoline dual injection provides extended lean-burn limits by taking advantage of hydrogen's low ignition energy, wide flammability limit and high flame speed. Direct injection of renewable fuels is the optimal injection strategy because it effectively utilises the strong cooling effect of alcohols or avoids the volumetric efficiency reduction and preignition of hydrogen. Dual injection generally demonstrates higher thermal efficiency than single injection.In addition, dual injection effectively reduces particulate emissions while there are usually trade-offs among gaseous emissions.

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“…of hydrogen [134]. Hydrogen addition could also extend the EGR limit under lean-burn conditions [136].…”

Section: Extended Lean Burn Limitmentioning

confidence: 99%

Section: Extended Lean Burn Limitmentioning

confidence: 99%

Section: Hydrogen-gasoline Dual Injection Enginesmentioning

confidence: 99%

See 1 more Smart Citation

Dual injection: An effective and efficient technology to use renewable fuels in spark ignition engines

Huang

Surawski

Zhuang

et al. 2021

Renewable and Sustainable Energy Reviews

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show abstract

“…With hydrogen, the engine could achieve low HC and CO emissions. Hydrogen addition increases the combustion temperature, which leads to an increase of NO X emissions [22][23][24]. To solve the problem of high NO X emission after injecting hydrogen into the engine, exhaust gas recirculation (EGR) was used to restrain the increase of NO X [25].…”

Section: Introductionmentioning

confidence: 99%

Study on the Effect of Second Injection Timing on the Engine Performances of a Gasoline/Hydrogen SI Engine with Split Hydrogen Direct Injecting

Sun

et al. 2020

Energies

Self Cite

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Split hydrogen direct injection (SHDI) has been proved capable of better efficiency and fewer emissions. Therefore, to investigate SHDI deeply, a numerical study on the effect of second injection timing was presented at a gasoline/hydrogen spark ignition (SI) engine with SHDI. With an excess air ratio of 1.5, five different second injection timings achieved five kinds of hydrogen mixture distribution (HMD), which was the main factor affecting the engine performances. With SHDI, since the HMD is manageable, the engine can achieve better efficiency and fewer emissions. When the second injection timing was 105° crank angle (CA) before top dead center (BTDC), the Pmax was the highest and the position of the Pmax was the earliest. Compared with the single hydrogen direct injection (HDI), the NOX, CO and HC emissions with SHDI were reduced by 20%, 40% and 72% respectively.

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“…the use of gaseous fuel and diesel fuel in the diesel engine) has gained a wide acceptance. [1][2][3][4] Natural gas, as an alternative clean energy, has the advantages of large reserves, wide distribution and low cost. Meanwhile, natural gas is more suitable for use at higher compression ratios than other gaseous fuels owing to its high self-ignition temperature.…”

Section: Introductionmentioning

confidence: 99%

The development of an electronic control system for diesel–natural gas dual-fuel engine

Xiao

2018

Proceedings of the Institution of Mechanical Engineers, Part I:

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To meet the actual application requirements for the diesel-natural gas dual-fuel engine refit, a new electronic control system for the dual-fuel engine is developed in the study. Specifically, an active mode switching board is developed to achieve flexible switching between the pure diesel mode and dual-fuel mode. A diesel nozzle physical simulator is developed to ensure that the original diesel electronic control unit does not trigger fault alarm when engine works in the dual-fuel mode. Moreover, a dual-fuel electronic control unit, which uses the high-speed and multicore TMS320F28M35 as its microcontroller unit, is additionally developed on the basis of the original diesel electronic control unit. The peak and hold current shape for the diesel nozzle is intelligently controlled by the software program in C2000 core. Experiments reveal that the developed electronic control system can select a proper working mode according to the engine operation condition and smoothly switch the working mode without any fault alarms.

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Effect of hydrogen proportion on lean burn performance of a dual fuel SI engine using hydrogen direct-injection

Cited by 113 publications

References 28 publications

Dual injection: An effective and efficient technology to use renewable fuels in spark ignition engines

Dual injection: An effective and efficient technology to use renewable fuels in spark ignition engines

Study on the Effect of Second Injection Timing on the Engine Performances of a Gasoline/Hydrogen SI Engine with Split Hydrogen Direct Injecting

The development of an electronic control system for diesel–natural gas dual-fuel engine

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