Development of a low-nox truck hydrogen engine with high specific power output*1

Jorach, Rainer W.

doi:10.1016/s0360-3199(96)00083-3

Cited by 40 publications

(10 citation statements)

References 7 publications

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“…To evaluate the plausibility of complete mixing in a DI-H2ICE, Homan (1978), using experimental correlations for air-entrainment rates in free-turbulent jets and order-ofmagnitude expressions for turbulent mixing times, estimated that a free-hydrogen jet with sonic velocity at the orifice issuing into air will entrain a stoichiometric amount of air in approximately 1 ms. However, contrary to this optimistic estimate, the overwhelming experimental evidence (Homan, 1978;Homan et al, 1983;Glasson and Green, 1994;Kim et al, 1995;Jorach et al, 1997) demonstrates that complete mixing in an engine takes approximately 10 ms. Homan et al (1983) conjectured that the order-of-magnitude difference in mixing times between the estimate for a free jet and that measured in an engine is a result of fluid flow interaction between in-cylinder flow and the hydrogen jet. A strong interaction will cause the free-jet analysis to break down.…”

Section: Direct-injection Hydrogen-fueled Internal Combustion Engine mentioning

confidence: 90%

“…The need for rapid mixing necessitates the use of critical flow injectors, and the short time duration with late injection requires high mass flow rates. The development of high-pressure injectors has been reported by Green and Glasson (1992) and Jorach et al (1997). The development of hydrogen injectors for injection pressures lower than 80 bar has been reported by Homan et al (1983) and Varde and Frame (1985).…”

Section: Direct-injection Hydrogen-fueled Internal Combustion Engine mentioning

confidence: 93%

See 1 more Smart Citation

Lean Hydrogen Combustion

Schefer¹,

White²,

Keller³

2008

Lean Combustion

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Section: Direct-injection Hydrogen-fueled Internal Combustion Engine mentioning

confidence: 90%

Section: Direct-injection Hydrogen-fueled Internal Combustion Engine mentioning

confidence: 93%

Lean Hydrogen Combustion

Schefer¹,

White²,

Keller³

2008

Lean Combustion

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“…Günlük hayatımızda kullanılan yakıtların oluşturduğu egzoz gazları çevreye zarar vermekte ve zararlı gazların emisyon değerlerini artırmaktadır. Bu durumda yenilenebilir enerjilerin kullanımının artırılması alınabilecek tedbirlerden biridir [3]. Bu nedenlerden dolayı fosil kökenli yakıtların yerini alabilecek alternatif enerji yakıtlarına ihtiyaç vardır [4].…”

Section: Introductionunclassified

Farklı Ham Sığır Gübresi/Mezbaha Atıkları Karışım Oranlarının Biyogaz Üretimi Üzerindeki Etkisinin Araştırılması

Şenol¹,

Elibol²,

Açıkel³

et al. 2018

Bitlis Eren Üniversitesi Fen Bilimleri Dergisi

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kalın bağırsak alınmıştır. Sığır gübresi olarak bütün proseslerde taze sığır gübresi kullanılmıştır. Taze sığır gübresinin kullanılmasının sebebi ise sığır atığında anaerobik mezofilik bakterilerin mevcut aktif durumda olmasıdır. Deneyler, 40 0 C 'de, 500 ml'lik kesikli olarak çalıştırılan nuçe erleninde gerçekleştirilmiştir. Anaerobik fermantasyon işlemlerinden önce, taze sığır gübresi ve mezbaha atıklarının kuru madde ve uçucu organik madde miktarı tayini yapılmıştır. Biyogaz üretimi; sadece sığır atığından, mezbaha atıklarından ve hem sığır hem de mezbaha atıkları karışımlarından üretilmiştir. Anaerobik fermantasyonda gerçekleşen mezbaha atıkları/sığır gübresi karışım oranları 1:0, 1:1, 2:1, 1:2, 0:1 olarak belirlenmiştir. Deneyler 3 tekerrürlü olarak yürütülmüştür. En fazla biyogaz üretimi 353 ml/gtoplam katı madde olarak 2:1 karışım oranları olan reaktörde ölçülmüştür. Metan oranı ise hacimsel olarak % 59 olarak belirlenmiştir. Aynı reaktörde ise toplam KOİ giderimi % 48,45 olarak bulunmuştur. Yapılan bu çalışma sonucunda sığır gübresi ve mezbaha atıklarının iyi bir karışım olabileceği deneysel olarak ispatlanmıştır.Anahtar kelimeler: Biyogaz, Mezbaha Atıkları, Sığır Gübresi. Investigation of the Effect of Different Cattle Manure / Slaughterhouse Waste Mixture Ratios on Biogas Production AbstractIn the study, anaerobic fermentation and biogas were produced from slaughterhouse waste and cattle fertilizer mixture which is organic waste. Slaughter slaughterhouse wastes were used as cattle slaughterhouse wastes A large intestine was used as slaughterhouse waste and fresh cattle manure was used in all processes as cattle manure. The reason for the use of fresh cattle manure is that the anaerobic mesophilic bacteria are presently active in the cattle manure. Experiments were carried out at a batch reactor of 500 ml. The working temperature was chosen to be 40 ° C. Prior to the anaerobic fermentation process, the amounts of dry matter and volatile organic matter were determined for fresh cattle manure and slaughterhouse waste. Biogas production is produced exclusively from cattle wastes, slaughterhouse wastes, and mixtures of both cattle manure and slaughterhouse waste. Slaughterhouse waste / cattle manure mixture rates in anaerobic fermentation were determined as 1: 0, 1: 1, 2: 1, 1: 2, 0: 1. The experiments were carried out in 3 recurrence. The maximum biogas production was measured in the reactor with a mixture ratio of 2: 1 as 353 ml / g VS. The methane content was measured as 59 % by volume. In the same reactor, total * Sorumlu yazar:

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“…With the help of a suitable mathematical model, the parameter calculation will begin and the performance of a hydrogen engine could be simulated. At last, it is possible to determine a beneficial working range for optimizing and predicting the engine's performance [3,4] Hydrogen can be easily ignited and the flame speed is about nine times that of gasoline. Simulation of internal combustion engines are desirable because of the aid they provide in design in predicting the trends than are normally obtainable from the experiment.…”

Section: Introductionmentioning

confidence: 99%

Simulation and Prediction on the Performance of a Hydrogen Engine

Han¹

2015

Journal of Energy Engineering

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-A computer simulation has been developed to predict and investigate the performance of the assumed hydrogen engine. The simulation has be come a powerful tool as it saves time and also economical when compared to experimental study. The effects of various parameters, such as equivalent ratio, spark advance, revolutions per minute were calculated and then the optimal parameters of assumed engine were determined. The effects of spark advance, revolutions per minute, cylinder pressure, rate of pressure rise, flame temperature, rate of heat release, and mass fraction burned were simulated. The objective of the research paper is to develop a internal combustion model with hydrogen as a fuel.

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Development of a low-nox truck hydrogen engine with high specific power output*1

Cited by 40 publications

References 7 publications

Lean Hydrogen Combustion

Lean Hydrogen Combustion

Farklı Ham Sığır Gübresi/Mezbaha Atıkları Karışım Oranlarının Biyogaz Üretimi Üzerindeki Etkisinin Araştırılması

Simulation and Prediction on the Performance of a Hydrogen Engine

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