In previous work, it is reported that increased dilution at midrange injection pressures produces longer first stage combustion duration. There is also corresponding decreases in nitric oxide concentrations and smoke number with respect to a reference conventional combustion mode. Continuing this effort, the objective of this study is to investigate the effect of injection pressure on the first stage ignition duration under low temperature combustion (LTC) conditions. A sweep of injection pressure is performed and the resulting heat (energy) release profiles are examined. The ignition delay behavior is expected based on changing injection pressure, but the first stage ignition duration does not follow expected trends based on initial literature review. It is postulated that the influence of injection pressure on the local equivalence ratios is causing the observed behavior. The appropriate measurement and analysis tools are not available to the authors to confirm this postulation. A literature review of work investigating ignition conditions in low temperature combustion modes is used to support the postulation made in this study.

References

References
1.
Bittle
,
J.
,
Knight
,
B.
, and
Jacobs
,
T.
,
2011
, “
Two-Stage Ignition as an Indicator of Low-Temperature Diesel Combustion
,”
Combust. Sci. Technol.
,
183
(
9
), pp.
947
966
.10.1080/00102202.2011.557672
2.
Yamada
,
H.
,
Suzaki
,
K.
,
Tezaki
,
A.
, and
Goto
,
Y.
,
2008
, “
Transition From Cool Flame to Thermal Flame in Compression Ignition Process
,”
Combust. Flame
,
154
(
1–2
), pp.
248
258
.10.1016/j.combustflame.2008.03.018
3.
Bonner
,
B. H.
, and
Tipper
,
C. F. H.
,
1965
, “
The Cool Flame Combustion of Hydrocarbons I—Cyclohexane
,”
Combust. Flame
,
9
(
3
), pp.
317
327
.10.1016/0010-2180(65)90097-0
4.
Bonner
,
B. H.
, and
Tipper
,
C. F. H.
,
1965
, “
The Cool Flame Combustion of Hydrocarbons II—Propane and n-Heptane
,”
Combust. Flame
,
9
(
4
), pp.
387
392
.10.1016/0010-2180(65)90028-3
5.
Burgess
,
A. R.
, and
Laughlin
,
R. G. W.
,
1972
, “
The Cool-Flame Oxidation of n-Heptane. Part I. The Kinetic Features of the Reaction
,”
Combust. Flame
,
19
(
3
), pp.
315
329
.10.1016/0010-2180(72)90001-6
6.
Fish
,
A.
,
Read
,
I.
,
Affleck
,
W.
, and
Haskell
,
W.
,
1969
, “
The Controlling Role of Cool Flames in Two-Stage Ignition
,”
Combust. Flame
,
13
(
1
), pp.
39
49
.10.1016/0010-2180(69)90026-1
7.
Lachaux
,
T.
,
Musculus
,
M. P. B.
,
Singh
,
S.
, and
Reitz
,
R. D.
,
2008
, “
Optical Diagnostics of Late-Injection Low-Temperature Combustion in a Heavy-Duty Diesel Engine
,”
ASME J. Eng. Gas Turbines Power
,
130
, p.
032808
.10.1115/1.2830864
8.
Lancaster
,
D. R.
,
Krieger
,
R. B.
, and
Lienesch
,
J. H.
,
1975
, “
Measurement and Analysis of Engine Pressure Data
,” SAE Transactions,
84
,
SAE
Paper No. 750026. 10.4271/750026
9.
Figliola
,
R.
, and
Beasley
,
D.
,
2000
, “
Probability and Statistics
,”
Theory and Design for Mechanical Measurements
,
John Wiley & Sons, Inc.
,
New York
, pp.
109
148
.
10.
Depcik
,
C.
,
Jacobs
,
T.
,
Hagena
,
J.
, and
Assanis
,
D.
,
2007
, “
Instructional Use of a Single-Zone, Premixed Charge, Spark-Ignition Engine Heat Release Simulation
,”
Int. J. Mech. Eng. Educ.
,
35
(
1
), pp.
1
31
.
11.
Foster
,
D. E.
,
1985
, “
An Overview of Zero-Dimensional Thermodynamic Models for IC Engine Data Analysis
,”
SAE International Fall Fuels and Lubricants Meeting and Exhibition
,
Tulsa, OK
,
SAE
Paper No. 852070. 10.4271/852070
12.
Brunt
,
M.
, and
Platts
,
K.
,
1999
, “Calculation of Heat Release in Direct Injection Diesel Engines,” SAE Transactions—Journal of Engines,
108
,
SAE
Paper No. 1999-01-0187. 10.4271/1999-01-0187
13.
Krieger
,
R.
, and
Borman
,
G.
,
1966
, “
The Computation of Apparent Heat Release for Internal Combustion Engines
,”
ASME Paper No.
66-WA/DGP-P.
14.
Hohenberg
,
G.
,
1979
, “
Advanced Approaches for Heat Transfer Calculations
,” SAE Transactions,
88
,
SAE
Paper No. 790825. 10.4271/790825
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