Control of the Start of HCCI Combustion by Pulsed Flame Jet

Murase, Eiichi; Hanada, K.

doi:10.4271/2002-01-2867

Cited by 27 publications

(16 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PFJ igniter is of the same size and shape as an ordinary spark plug, and it contains a small cavity and an orifice (Murase, 1995;Murase and Hanada, 2001, 2002, 2003Murase et al, 1996Murase et al, , 2004Oppenheim et al, 1990). The fuel injector is connected to the cavity via an insulator and a hollow center electrode.…”

Section: Pulsed Flame Jet (Pfj)mentioning

confidence: 99%

Photographic Observation and Emission Spectral Analysis of Homogeneous Charge Compression Ignition Combustion

Murase

Hanada

Miyaura

et al. 2005

Combustion Science and Technology

Self Cite

View full text Add to dashboard Cite

Experimental studies of homogeneous charge compression ignition (HCCI) combustion have been conducted by using a compact rapid compression machine. The image of the cool flame was captured by a high-speed camera with image intensifier, and during the cool flame appearance the Emeleus cool flame band was observed. Then blue flame became evident, its emission spectrum being similar to that of the cool flame with overlapping by HCO bands. During the main heat release duration, the hot flame emission spectrum was observed, where the distinct OH emission appeared, and it was superimposed on the carbon monoxide oxidation continuum. After the main heat release, the broad peak of the spectrum was shifted to the longer-wavelength side, and the images of the flames changed to red, especially at higher equivalence ratios. This red coloration must originate from the H 2 O vibration-rotation bands (580.7-966.9 nm). On the other hand, it has been revealed that a pulsed flame jet (PFJ) has the potential for directly controlling the start of HCCI combustion. In the jet of PFJ, the emission spectrum obtained was composed of distinct OH and CH emissions superimposed on the carbon monoxide oxidation continuum.

show abstract

Section: Pulsed Flame Jet (Pfj)mentioning

confidence: 99%

Photographic Observation and Emission Spectral Analysis of Homogeneous Charge Compression Ignition Combustion

Murase

Hanada

Miyaura

et al. 2005

Combustion Science and Technology

Self Cite

View full text Add to dashboard Cite

show abstract

“…It was revealed that by employing the Pulse Flame Jet (PFJ) system the onset of the ignition of homogeneous fuel-air mixture can be changed appropriately with the ignition timing of the PFJ igniter. Combustion characteristics from the images were similar to those of the auto-ignition case [16]. This showed that PFJ had the potential for actively controlling the start of homogenous charge combustion.…”

Section: Introductionmentioning

confidence: 52%

Experimental and Numerical Study of Jet Controlled Compression Ignition on Combustion Phasing Control in Diesel Premixed Compression Ignition Systems

et al. 2014

View full text Add to dashboard Cite

Abstract:In order to directly control the premixed combustion phasing, a Jet Controlled Compression Ignition (JCCI) for diesel premixed compression ignition systems is investigated. Experiments were conducted on a single cylinder natural aspirated diesel engine without EGR at 3000 rpm. Numerical models were validated by load sweep experiments at fixed spark timing. Detailed combustion characteristics were analyzed based on the BMEP of 2.18 bar. The simulation results showed that the high temperature jets of reacting active radical species issued from the ignition chamber played an important role on the onset of combustion in the JCCI system. The combustion of diesel pre-mixtures was initiated rapidly by the combustion products issued from the ignition chamber. Moreover, the flame propagation was not obvious, similar to that in Pre-mixed Charge Compression Ignition (PCCI). Consequently, spark timing sweep experiments were conducted. The results showed a good linear relationship between spark timing in the ignition chamber and CA10 and CA50, which indicated the ability for direct combustion phasing control in diesel PCCI. The NO x and soot emissions gradually changed with the decrease of spark advance angle. The maximum reduction of NO x and soot were both over 90%, and HC and CO emissions were increased.

show abstract

“…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%

See 1 more Smart Citation

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

et al. 2014

View full text Add to dashboard Cite

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

show abstract

Control of the Start of HCCI Combustion by Pulsed Flame Jet

Cited by 27 publications

References 12 publications

Photographic Observation and Emission Spectral Analysis of Homogeneous Charge Compression Ignition Combustion

Photographic Observation and Emission Spectral Analysis of Homogeneous Charge Compression Ignition Combustion

Experimental and Numerical Study of Jet Controlled Compression Ignition on Combustion Phasing Control in Diesel Premixed Compression Ignition Systems

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

Contact Info

Product

Resources

About