Advanced electronically controlled diesel engines require a feedback signal to the ECU to adjust different operating parameters and meet demands for power, better fuel economy and low emissions. Different types of in-cylinder combustion sensors are being considered to produce this signal. This paper presents results of an experimental investigation on the characteristics of the ion current in an automotive diesel engine equipped with a common rail injection system. The engine is a 1.9 L, 4-cylinder, direct injection diesel engine. Experiments covered different engine loads and injection pressures. The relationships between the ion current, combustion parameters and engine out NO emissions and opacity are presented. The analysis of the experimental data identified possible sources of the ion current produced in diesel engines.

References

References
1.
Henein
,
N. A.
,
Bryzik
,
W.
,
Rehim
,
A. A.
, and
Gupta
,
A.
, 2010, “
Characteristics of Ion Current Signals in Compression Ignition and Spark Ignition Engines
,” SAE Paper No. 2010-01-0567.
2.
Glavmo
,
M.
,
Spadafora
,
P.
, and
Bosch
,
R.
, 1999, “
Closed Loop Start of Combustion Control Utilizing Ionization Sensing in a Diesel Engine
,” SAE Paper No. 1999-01-0549.
3.
Kessler
,
M.
, 2002, “
Ionenstromsensorik im Dieselmotor
,” Ph.D. thesis, Fortsch-Ber. VDI Reihe 12 Nr. 487, Dusseldorf. VDI Verog.
4.
Kubach
,
H.
,
Velji
,
A.
,
Spicher
,
S.
, and
Fischer
,
W.
, 2004, “
Ion Current Measurement in Diesel Engines
,” SAE Paper No. 2004-01-2922.
5.
Calcote
,
H. P.
, 1965, “
Negative and Secondary Ion Formation in Low-Pressure Flames
,”
Tenth symposium (International) on Combustion
, pp.
605
619
.
6.
Naoumov
,
V.
,
Demin
,
A.
,
Anderson
,
A.
, and
Sokolov
,
A.
, 2002, “
Modeling of Combustion and Non-equilibrium Ionization in Spark Ignition Engines
,” SAE Paper No. 2002-01-0009.
7.
Demin
,
A.
, and
Sokolov
,
A.
, 2004, “
Three Zone Model of Combustion and Chemical Non-Equilibrium Ionization in the SI Engine
,” SAE Paper No. 2004-01-0622.
8.
Reimann
,
R.
,
Saitzkoff
,
A.
,
Mauss
,
F.
, and
Glavmo
,
M.
, 1997, “
Local Air-Fuel Ratio Measurements Using the Spark Plug as an Ionization Sensor
,” SAE Paper No 970856.
9.
Rehim
,
A. A.
,
Henein
,
N. A.
, and
Van Dyne
,
E.
, 2007, “
Ion Current in a Spark Ignition Engine Using Negative Polarity on Central Electrode
,” SAE Paper No. 2007-01-0646.
10.
Saitzkoff
,
A.
,
Reinmann
,
R.
,
Mauss
,
F.
,
Glavmo
,
M.
, and
Berglind
,
T.
, “
An Ionization Equilibrium Analysis of the Spark Plug as an Ionization Sensor
,” SAE Paper No. 960337.
11.
Anderson
,
I.
, 2004, “
A Comparison of Combustion Temperature Models for Ionization Current Modeling in an SI Engine
,” SAE Paper No. 2004-01-1465.
12.
Vressner
,
A.
,
Strandh
,
P.
,
Hultqvist
,
A.
,
Tunestal
,
P.
, and
Johansson
, “
Multiple Point Ion Current Diagnostics in an HCCI Engine
,” SAE Paper No. 2004-01-0934.
13.
Lewis
,
B.
, and
von Elbe
G.
, 1961,
Combustion, Flames and Explosions of Gases
,
Academic
,
New York
.
14.
Calcote
H. F.
, 1957, “
Mechanisms for the Formation of Ions in Flames
,”
Combustion and Flame
,
1
, pp.
385
403
.
15.
Calcote
H. P.
, 1965, “
Negative and Secondary Ion Formation in Low-Pressure Flames
,”
Tenth Symposium (International) on Combustion
, pp.
605
619
.
16.
McClatchy
,
C. S.
, 1979, “
Langmuir Probe Measurements of Ion Density in an Atmospheric Air-Propane Flame
,”
Combustion and Flame
36
, pp.
171
178
.
17.
Arrigoni
,
V.
,
Calvi
,
F.
,
Cornetti
,
G. M.
, and
Pozzi
,
U.
, “
Turbulent Flame Structure as Determined by Pressure Development and Ionization Intensity
,” SAE Paper No. 730088.
18.
Shimasaki
,
Y.
,
Kanehiro
,
M.
,
Baba
,
S.
,
Manuyama
,
S.
,
Hisaki
,
T.
, and
Miyata
,
S.
, “
Spark Plug Voltage Analysis for Monitoring an Internal Combustion Engine
,” SAE Paper No. 930461.
19.
Heywood
,
J. B.
, 1988,
Internal Combustion Engine Fundamentals
,
McGraw-Hill
,
New York
.
20.
Kimura
,
S.
,
Aoki
,
O.
,
Ogawa
,
H.
,
Muranaka
,
S.
, and
Enomoto
,
Y.
, 1999, “
New Combustion Concept for Ultra-Clean and High-Efficiency Small DI Diesel Engines
,” SAE Paper No. 1999-01-3681.
21.
Aceves
,
S. M.
, and
Flowers
D. L.
, 2005, “
A Detailed Chemical Kinetic Analysis of Low-Temperature, Non-Sooting Diesel Combustion
,” SAE Paper No. 2005-01-0923.
You do not currently have access to this content.