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Cylinder Pressure
The piezoelectric principle has gained worldwide acceptance for precision measurement of cylinder pressure. For research engines Kistler supplies compact cylinder pressure sensors with a cooling system and highly accurate signal processing electronics.
For development projects miniature sensors are used. These are available in various forms to allow a high standard of measurement to be achieved with minimum adaptation. Other solutions completely avoid the need for cylinder head modification.
Kistler incorporates the sensor in a spark plug or glow plug. The company offers what are called measuring spark plugs in numerous different sizes, and with various types of electrode and heat values.
For diesel engines Kistler supplies fully serviceable glow plugs and matching adapters with built-in pressure sensor. This measurement setup also allows safe and cost-effective access to the combustion chamber.
You too should profit from one of the many Kistler innovations:
Ultra-miniature water-cooled precision sensor (Type 6041...), also available as special model (Type 6043...).
Indication through spark plug and glow plug bores, for development and benchmarking on virtually all standard engines.
Indicator probes for high-performance engines (Type 6081...).
Automatic sensor identification PiezoSmart(PiezoSmart brochure).
Individual amplifiers and amplifier systems, manual or remote setting.
Services and equipment for calibration of pressure sensors and amplifiers.
| Description |
Type 6041 |
 |
ThermoComp® quartz pressure sensor, 250 bar, without PiezoSmart |
6041A |
|
ThermoComp® quartz pressure sensor, 250 bar, with PiezoSmart |
6041AS31 |
|
ThermoComp® quartz pressure sensor, 250 bar, cable length with order |
6041AS39 |
| Description |
Type 6043 |
 |
ThermoComp® Quartz Pressure Probe, 250 bar, length 60 mm |
6043A60 |
|
ThermoComp® Quartz Pressure Probe, 250 bar, length 30-60 mm |
6043AQ12 |
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ThermoComp® Quartz Pressure Probe, 250 bar, length 30-60 mm |
6043ASP30-<60 |
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ThermoComp® Quartz Pressure Probe, 250 bar, length 60-150 mm |
6043ASP>60-150 |
| Description |
Type 6081 |
 |
Indicating Probe with 3 mm Sensor, 250 bar, length 30 mm |
6081A30 |
|
Indicating Probe with 3 mm Sensor, 250 bar, length 40 mm |
6081A40 |
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Indicating Probe with 3 mm Sensor, 250 bar, length 50 mm |
6081A50 |
| ThermoComp® quartz pressure sensor, 250 bar, without PiezoSmart |
|
| Specifications |
|
Type 6041A |
| Measuring range |
bar |
0...250 |
| Sensitivity |
pC/bar |
≈-20 |
| Natural Frequency |
kHz |
≈70 |
| Non linearity |
% FSO |
<±0.5 |
| Operating temperature range |
°C |
-50...350 |
| Sensitivity shift, cooled |
% |
±0.5
50 °C +/- 35 °C |
| Sensitivity shift, uncooled |
% |
<±2
200 °C +/- 150 °C |
| Thermal shock dp (short time) |
bar |
<±0.25 |
| Thermal shock dp mi |
% |
<±2 |
| Thermal shock dp max |
% |
<±1 |
| Acceleration sensitivity |
bar/g |
<0.012
axial |
| Thread |
|
M8x0,75 |
| Cooling |
|
water cooled |
| Front diameter |
mm |
11.51 |
| Length |
mm |
8 |
| Cable length |
|
Standard length 1 m |
| Connector |
|
M4x0,35 pos. |
| PiezoSmart (TEDS) |
|
no |
Characteristics
Miniature water-cooled cylinderpressure sensor (M8 thread). Thermal shock-optimized double diaphragm, long service life due to TiN coating and metalbraided cable. |
|
Applications
This miniature sensor Type 6041A is ideal for thermodynamic measurements in compact multi-valve engines which have a limited amount of space. Its low temperature shock sensitivity and very stable zero point produce precise measuring results. |
| ThermoComp® Quartz Pressure Probe, 250 bar, length 60 mm |
|
| Specifications |
|
Type 6043A60 |
| Measuring range |
bar |
0...250 |
| Sensitivity |
pC/bar |
≈-20 |
| Natural Frequency |
kHz |
≈70 |
| Non linearity |
% FSO |
<±0.5 |
| Operating temperature range |
°C |
-50...350 |
| Sensitivity shift, cooled |
% |
±0.5
50 °C +/- 35 °C |
| Sensitivity shift, uncooled |
% |
<±2
200 °C +/- 150 °C |
| Thermal shock dp (short time) |
bar |
<±0.25 |
| Thermal shock dp mi |
% |
<±2 |
| Thermal shock dp max |
% |
<±1 |
| Acceleration sensitivity |
bar/g |
<0.015
axial |
| Thread |
|
M8x0,75 |
| Cooling |
|
water cooled |
| Front diameter |
mm |
9.8 |
| Length |
mm |
8
Standard length 1 m |
| Connector |
|
M4x0,35 pos. |
| Cable length |
|
Standard length 1 m |
| PiezoSmart (TEDS) |
|
no |
Characteristics
Miniature water-cooled cylinderpressure sensor (M8 thread). Thermal shock-optimized double diaphragm, long service life due to TiN coating and metalbraided cable. |
|
Applications
This miniature sensor Type 6041A is ideal for thermodynamic measurements in compact multi-valve engines which have a limited amount of space. Its low temperature shock sensitivity and very stable zero point produce precise measuring results. |
| Indicating Probe with 3 mm Sensor, 250 bar, length 30 mm |
|
| Specifications |
|
Type 6081A30 |
| Measuring range |
bar |
0...250 |
| Sensitivity |
pC/bar |
9.5 |
| Natural Frequency |
kHz |
≈120 |
| Non linearity |
% FSO |
<±0.8 |
| Operating temperature range |
°C |
-50...350 |
| Sensitivity shift, uncooled |
% |
<±2
200 °C +/- 150 °C |
| Thermal shock dp (short time) |
bar |
<±0.8 |
| Thermal shock dp mi |
% |
<±4 |
| Thermal shock dp max |
% |
<±2 |
| Acceleration sensitivity |
bar/g |
<0.001 |
| Thread |
|
M5x0,5 |
| Cooling |
|
not cooled |
| Length |
mm |
30 |
| Diameter |
mm |
4 |
| Connector |
|
M4x0,35 pos.
Cable direct to sensor |
| Cable length |
|
Standard length 1 m |
Characteristics
Miniature sensor for indicating measurements, simple handling, rugged, available in various lengths, mounting insensitivity due to 90° taper. |
|
Applications
Small size and rugged design for engines with complex build geometry, can also be used without problem in knocking combustion. The angled sealing surface places only minor requirements on quality of the mounting bore. |
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