2.2 CYLINDER PRESSURE SENSORS FOR ENGINE DEVELOPMENT
GC24D
TIGG1785A.01
The GC24D is a watercooled GaPO4 sensor with a convenient
installation by M8 threads and allows very precise thermodynamic
measurements. 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 GC24D 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 … 250 bar
Overload 300 bar
Sensitivity 45 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 … 250 bar
Natural frequency 90 kHz
Acceleration sensitivity
≤
≤
0.01 bar/g
0.001 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
≤
≤
±
1.5 %
0.25 %
20 … 400 °C and
0 … 250 bar
50 ± 30 °C and
0 … 250 bar typ.
Load change drift 3.0 mbar/ms max. gradient typ.
Cyclic temperature drift 2) ≤ ± 0.3 bar
Thermo shock error Δp 3) ≤ ± 0.2 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 GC24D
Piezo-input cable CI31-1
Coupling CC31
Gasket SG21
Accessory kit (protection cap + 2 o-rings)
Spare gasket SG21
Calibration sheet
Documentation
66