Impact of a split injection strategy on mixing, ignition and combustion behavior in Premixed charge compression ignition combustion

Doll, Ulrich; Barro, Christophe; Todino, Michele Domenico; Boulouchos, Konstantinos

doi:10.1016/j.fuel.2021.120511

Cited by 8 publications

(15 citation statements)

References 45 publications

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“…This article presents three different operating conditions which aim to study diverse states of mixing at ignition while respecting the operating limits of the machine (RCEM). These operating conditions have been designed in [3] so that combustion takes place at low temperatures before the last injection was partially premixed. Although computationally it is possible to visualize the behavior of the flow throughout the entire domain, this is not the case in experiments where optical access is limited.…”

Section: Operating Conditions -Multiple Injection Strategymentioning

confidence: 99%

“…The regulations on the level of pollution and CO 2 emitted by combustion engines to the atmosphere combined with ongoing quest to enhance engine efficiency, prompted the scientific community to explore alternative methods to traditional combustion systems that are capable of meeting current and future requirements. In this context, one of the most promising alternatives is the application of low temperature combustion (LTC) concepts for direct-injection diesel engines [3]. LTC modes are characterized by highly diluted mixtures in effort to decrease the overall temperature of the combustion process.…”

Section: Introductionmentioning

confidence: 99%

“…On the contrary, at high loads and compared to single injection, a lean and homogeneous mixture formation is experienced using multiple fuel injection. In a recent study, Doll et al [3] experimentally measured the mixing dynamics for several split injection strategies in a RCEM and assessed their relation to the ignition characteristics of each case.…”

Section: Introductionmentioning

confidence: 99%

“…This allows explaining the experimental observations and confirming the previously drawn hypothesis. The setup follows the detailed experimental campaign employed in previous researches [3]. The survey will be carried out computationally on a RCEM which will be operated with a split injection PCCI strategy.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Computational study of the Premixed Charge Compression Ignition combustion in a Rapid Compression Expansion Machine: Impact of multiple injection strategy on mixing, ignition and combustion processes

Martínez

Altantzis²,

Wright³

et al. 2022

Fuel

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Section: Operating Conditions -Multiple Injection Strategymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Computational study of the Premixed Charge Compression Ignition combustion in a Rapid Compression Expansion Machine: Impact of multiple injection strategy on mixing, ignition and combustion processes

Martínez

Altantzis²,

Wright³

et al. 2022

Fuel

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“…Doll, H. et al, [13] • Mixing, ignition, and combustion characteristics in premixed compression ignition with a split injection strategy.…”

mentioning

confidence: 99%

Spray Behavior, Combustion, and Emission Characteristics of Jet Propellant-5 and Biodiesel Fuels with Multiple Split Injection Strategies

Baek

Lee

2022

Energies

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This study focuses on an analysis of the spray behavior, combustion, and emission characteristics of jet propellant-5 (JP-5) and biodiesel fuels with single-injection timing and multiple split injection strategies in a common rail direct injection (CRDI) single-cylinder diesel engine system. The analysis includes visualization of the spray and combustion. Multiple split injection strategies (e.g., double, triple, quadruple, and quintuple) were considered by equally distributing the fuel injection amount within the single-injection. Injection of biodiesel has a delayed start (0.2 ms) as well as shorter spray tip penetration compared with JP-5. As the fuel injection timing was approached to the top dead center (TDC), the engine performance and combustion efficiency improved. Retarding the injection timing contributed to an increase in carbon dioxide (CO2) (JP-5: max. 2.6% up, BD100: max. 1.5% up) and a decrease in carbon monoxide (CO) (JP-5: max. 93% down, BD100: max. 91% down) and nitrogen oxides (NOx) (JP-5: max. 83% down, BD100: max. 82% down). In comparison with JP-5, biodiesel showed disadvantages from the point of its combustion and emission characteristics for all injection timings. The quadruple-injection strategy, in which fuel injection was performed four times, showed excellent combustion, engine performance, and combustion efficiency. The CO2 emissions were highest with the quadruple-injection strategy (JP-5: 6.6%, BD100: 5.8%). The CO emissions of biodiesel decreased as the pulses of split injection extended, and a significant reduction of 83.8% was observed. NOx increased as the number of split injections increased (JP-5: max. 37% up, BD100: max. 52% up). JP-5 was a longer ignition delay than that of biodiesel from combustion flame visualization results. The final combustion in the multiple-injection strategy showed a typical diffusion combustion pattern.

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Combustion and spray breakup characteristics of biodiesel for cold start application

Chaudhari

Jagdale

Chorey

et al. 2021

Cleaner Engineering and Technology

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Impact of a split injection strategy on mixing, ignition and combustion behavior in Premixed charge compression ignition combustion

Cited by 8 publications

References 45 publications

Computational study of the Premixed Charge Compression Ignition combustion in a Rapid Compression Expansion Machine: Impact of multiple injection strategy on mixing, ignition and combustion processes

Computational study of the Premixed Charge Compression Ignition combustion in a Rapid Compression Expansion Machine: Impact of multiple injection strategy on mixing, ignition and combustion processes

Spray Behavior, Combustion, and Emission Characteristics of Jet Propellant-5 and Biodiesel Fuels with Multiple Split Injection Strategies

Combustion and spray breakup characteristics of biodiesel for cold start application

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