4.3 OPTICAL SPARK PLUG SENSORS FOR COMBUSTION MEASUREMENTS TASKS
VISIO SPARK PLUG SOLUTIONS
Many of the engine designs today use a spark
plug of size M14×1.25. In order to perform
advanced combustion analysis based on optical
investigation the AVL product spectrum of
optical spark plug solutions of size M14×1.25
covers a broad range of crank angle based
flame measurement applications 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 (8 channels)
• VisioKnock Spark Plug Sensor (8 channels)
• VisioVolume Spark Plug Sensor
(8 channels, for soot investigations)
• VisioKnock Advanced Spark Plug Sensor
(40 channels, for knock studies)
• VisioHighRes Spark Plug Sensor
(80 channels, for pre-ignition and high-res
soot studies)
SPECIFICATIONS
Mounting thread M14×1.25
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
M14 VisioFlame Spark Plug Sensor
with 8 Channel as an example
118