M12 VISIO SPARK PLUG SOLUTIONS
Most of the engine designs today use a spark
plug of size M12×1.25. In order to perform
advanced combustion analysis based on optical
investigation the AVL product spectrum of
optical spark plug solutions of size M12×1.25
covers a broad range of crank angle based
flame measurement applications from in IC
engine cylinders to enable the identification
of premixed flames versus versus diffusion
flames for the root cause analysis of particulate
formation in stationary and transient
operation, flame kernal propagation, knock
starting locations analysis and the identification
of irregular combustion. Beside the available
standard solutions customized solutions
can be built up on request.
Available solutions
• VisioFlame Spark Plug Sensor (7 channels)
• VisioKnock Spark Plug Sensor (8 channels)
• VisioVolume Spark Plug Sensor
(8 channels, for soot investigations)
• VisioKnock Advanced Spark Plug Sensor
(35 channels, for knock studies)
• VisioHighRes Spark Plug Sensor
(70 channels, for pre-ignition and high
resolution soot investigations)
Other Sensors
SPECIFICATIONS
Mounting thread M10×1
Thread length 26.5 mm
Heat value (BOSCH) HV3
Spark position 3 mm
Electrode gap 0.7 mm
Temperature of the plug seat 230 °C permanent
Spark plug insulator resistivity 108 Ω at 20 °C, 1 kV
Burn-off resistence 6 kΩ at 20 °C, 1 kV
Electric strength
40 kV
(ISO11565, 3.7.2)
Eccentricity of the insulator 1.15 mm
Mounting thread M12×1.25
Thread length 26.5 mm
Heat value (BOSCH) HV3, HV5
Available spark position 3 mm, 5 mm
Electrode gap 0.7 mm
Temperature of the plug seat 230 °C permanent
Spark plug insulator resistivity 108 Ω at 20 °C, 1 kV
Burn-off resistence 6 kΩ at 20 °C, 1 kV
Electric strength
40 kV
(ISO11565, 3.7.2)
Eccentricity of the insulator 0 mm
THE SOLUTION
M10 VisioKnock SPARK PLUG SENSOR
Due to the increasing complexity of today’s
combustion engines the available space for
spark plugs is reduced already. The mounting
size M10×1 becomes more and more popular.
AVL covers this demand already with the brand
new M10 VisioKnock Spark Plug Sensor for
optical investigation of knocking combustion
for performance optimization. Five optical elements
provide the functionality of VisioKnock
measurements with fifteen cones of view. One
optical element provides one further cone of
view towards the piston to identify the diffusion
flame radiation from the piston surface.
M10 VisioKnock
Spark Plug Sensor
M12 HighRes Spark Plug Sensor
as an example
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