2.2 CYLINDER PRESSURE SENSORS FOR ENGINE DEVELOPMENT
GC24DK
TIGG1792A.01
The GC24DK is a watercooled GaPO4 sensor with a convenient installation
by M8 threads and suitable for accurate and robust measurements
in supercharged engines with very high specific output. It has thermally
optimized piezoelectric elements. An active water cooling system is
required to ensure long lifetimes and excellent thermodynamic behavior.
In case of a failure in the cooling system the GC24DK is designed so that
the sensor can survive temperatures up to 400 °C. The sensor is equipped
with built in SID for SDM.
SPECIFICATIONS
Measuring range 0 … 300 bar
Overload 350 bar
Sensitivity 35 pC/bar nominal
Linearity ≤ ± 0.3 % FSO
Calibrated ranges
1) surface temperature around the HEX < 200 °C
2) at 7 bar IMEP and 1,300 rpm, diesel
3) at 9 bar IMEP and 1,500 rpm, gasoline
0 … 80 bar
0 … 150 bar
0 … 300 bar
Natural frequency 100 kHz
Acceleration sensitivity
≤
≤
0.13 bar/g
0.0013 bar/g
axial, water
cooled
axial, uncooled
Shock resistance ≥ 2,000 g
Insulation resistance ≥ 1*1013 Ω
Capacitance 12 pF
Sensor operating temperature
range 1) - 40 … 400 °C
Thermal sensitivity change
≤
≤ ±
2 %
0.25 %
20 … 400 °C and
0 … 300 bar
50 ± 30 °C and
0 … 300 bar typ.
Cyclic temperature drift 2) ≤ ± 0.7 bar
Thermo shock error Δp 3) ≤ ± 0.4 bar typ.
Thread diameter M8×0.75 shoulder sealed
Cable Connection M3×0.35 negative
Weight 14 grams without cable
Mounting torque 6 Nm using SF01
SCOPE OF SUPPLY
Sensor GC24DK
Piezo-input cable CI31-1
Coupling CC31
Gasket SG21
Accessory kit (protection cap + 2 o-rings)
Spare gasket SG21
Calibration sheet
Documentation
68