Development of a Turbulence Controlled Rapid Compression Machine for HCCI Combustion

Guibert, Philippe; Kéromnès, Alan; Legros, Guillaume

doi:10.4271/2007-01-1869

Cited by 14 publications

(21 citation statements)

References 24 publications

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“…1: mixture inlet port; 2: piston body; 3: piston nose; 4: pre-compression chamber; 5: convergent section; 6: combustion chamber; 7: PIV laser head mounted with its laser sheet generation optics; 8: refining cylindrical lens; 9: PIV camera pre-compression chamber (4), the combustion chamber (6), and the acquisition and control system. The first and fourth components are detailed in [2], therefore are not shown in Fig. 1.…”

Section: Introductionmentioning

confidence: 96%

“…A Rapid Compression Machine (RCM) that complies with these performance goals has been designed at the Université Pierre et Marie Curie (UPMC) [2]. The RCMs are combustion facilities that can be conceptualized as a simple piston-cylinder device.…”

Section: Introductionmentioning

confidence: 99%

“…Figure 1 shows a partial cross-section view of the UPMC-RCM. A detailed technical description of the machine can be found in [2]. The machine can be divided into four main components: the hydraulic system, a single piston (2-3) moving inside a Fig.…”

Section: Introductionmentioning

confidence: 99%

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An Experimental Investigation of the Turbulence Effect on the Combustion Propagation in a Rapid Compression Machine

Guibert

Kéromnès

Legros

2009

Flow Turbulence Combust

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The role of different combustion modes that govern the combustion propagation inside a rapid compression machine is discussed. Aiming at the control of the compression generated turbulence, the careful design of the UPMC-RCM is described. A methodology is then proposed to investigate the influence of the residual post-compression turbulence level on the visible combustion propagation process. Through the fuel type, the main parameter varied is the ratio of the ignition delay time to the characteristic decay time for the post-compression turbulence. A highspeed camera images the visible combustion. Particle Image Velocimetry provides two-dimensional velocity fields of the post-compression flow prior to ignition. The residual turbulence level is shown to influence the combustion propagation phenomenology, highlighting the coexistence of both volumetric and frontlike combustion modes for the shorter aforementioned ratios. This conclusion could contribute to an explanation of the experimental discrepancies among the ignition delays measured in different RCMs as the residual turbulence level is highly set-up dependent.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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An Experimental Investigation of the Turbulence Effect on the Combustion Propagation in a Rapid Compression Machine

Guibert

Kéromnès

Legros

2009

Flow Turbulence Combust

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“…RCMs [2][3][4][5][6][7][8][9][10][11][12][13][14] and rapid compression and expansion machines (RCEMs) [15][16][17][18][19] can be classified on the basis of whether they can perform an expansion stroke. The distinguishing characteristic of RCM from RCEM is that when the piston of the RCM moves to the top dead center (TDC), the piston gets locked (including driving gas pressure locking or mechanical locking) without an expansion process, such that a constant volume combustion chamber is formed.…”

Section: Introductionmentioning

confidence: 99%

“…The opposed compression type can offer a faster compression speed (approximately twice that of single axial compression type) with the same compression ratio because of drive and compression processes on two sides. Furthermore, the single axial compression RCM includes horizontal, vertical [13], and right-angled types [11,12,16]. The horizontal types are the most commonly used pattern, the vertical type considers a certain movement direction of the piston, and most right-angled types are used in a situation in which the piston motion is conducted by a cam.…”

Section: Introductionmentioning

confidence: 99%

Performance Characterization and Auto-Ignition Performance of a Rapid Compression Machine

et al. 2014

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Abstract:A rapid compression machine (RCM) test bench is developed in this study. The performance characterization and auto-ignition performance tests are conducted at an initial temperature of 293 K, a compression ratio of 9.5 to 16.5, a compressed temperature of 650 K to 850 K, a driving gas pressure range of 0.25 MPa to 0.7 MPa, an initial pressure of 0.04 MPa to 0.09 MPa, and a nitrogen dilution ratio of 35% to 65%. A new type of hydraulic piston is used to address the problem in which the hydraulic buffer adversely affects the rapid compression process. Auto-ignition performance tests of the RCM are then performed using a DME-O2-N2 mixture. The two-stage ignition delay and negative temperature coefficient (NTC) behavior of the mixture are observed. The effects of driving gas pressure, compression ratio, initial pressure, and nitrogen dilution ratio on the two-stage ignition delay are investigated. Results show that both the first-stage and overall ignition delays tend to increase with increasing driving gas pressure. The driving gas pressure within a certain range does not significantly influence the compressed pressure. With increasing compression ratio, the first-stage ignition delay is shortened, whereas the second-stage ignition delay is extended. With increasing initial pressure, both the first-stage and second-stage ignition delays are shortened. The second-stage ignition delay is shortened to a greater extent than that of the first-stage. With increasing nitrogen dilution ratio, the first-stage ignition delay is shortened, whereas the second-stage is extended. Thus, overall ignition delay presents different trends under various compression ratios and compressed pressure conditions. OPEN ACCESSEnergies 2014, 7 6084

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Fundamentals

Musculus

Pickett

Kaiser

2014

Encyclopedia of Automotive Engineering

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Fundamental details of the spatial and/or temporal evolution of in‐cylinder processes of internal combustion engines may be gained from various optical diagnostics. Application of optical diagnostics requires experimental facilities with optical access, appropriate light detection instrumentation, and potentially external light sources and delivery optics. Three types of optical facilities that recreate engine‐relevant high pressure, high temperature conditions are reviewed here: engines, rapid compression machines, and pressurized high temperature spray or premixed fuel–air chambers. In addition, several of the more commonly applied optical diagnostic techniques that can detect combustion‐generated light emission, attenuation and scattering of light from external sources, and artificially generated emission, including laser‐induced processes, are also briefly reviewed.

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Development of a Turbulence Controlled Rapid Compression Machine for HCCI Combustion

Cited by 14 publications

References 24 publications

An Experimental Investigation of the Turbulence Effect on the Combustion Propagation in a Rapid Compression Machine

An Experimental Investigation of the Turbulence Effect on the Combustion Propagation in a Rapid Compression Machine

Performance Characterization and Auto-Ignition Performance of a Rapid Compression Machine

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