Temperature Absolute Pressure Sensor

The TMAP is composed of pressure sensor and temperature sensor.

Feature and benefits

The TMAP sensor provides 2 outputs

Intake manifold absolute pressure output /Derived from a MEMs based sensing element

Intake manifold air temperature output / Provided by a NTC thermistor Together with information of cylinder volume, we can calculate the air mass

Performance and customer interface compatible with Bosch TMAP

Single chip solution ,SMT for EMA fabrication process

NTC thermistor for temperature measurement, resistance welding used for assembly

Steel ball for vent hole sealing, laser marking for better traceability

Different pressure ranges are available on customer request.

Application

With information of fuel pressure sensor, ECU can calculate the ratio of air & fuel, increase or reduce fuel injecting time to get the optimal ratio of air & fuel.

Operate
Basic principle

According to the change of vacuum in intake manifold, the pressure part of intake temperature and pressure sensor converts into voltage signal from the change of internal resistance of sensor, which is used for ECU computer to correct fuel injection quantity and ignition timing angle. The temperature part consists of a negative temperature coefficient thermistor. When the temperature is high, the resistance decreases; when the temperature is low, the resistance increases. With the change of temperature resistance, the voltage changes, and the signal changes from 0V to 5V.

Connection options

Customized to customer choice of connection system.

Packaging Options

Custom packaging can be provided to meet any need, please contact KESENS Engineering for details.

Functional Characteristics
PARAMETER
NOTE
MIN.
NOM.
MAX.
UNITS
TEMPERATURE RANGE
T
-40
 
130
PRESSURE RANGE
P
10
 
115
kPa
SUPPLY VOLTAGE
Vcc
4.5
5
5.5
V
SUPPLY CURRENT
Icc
 
8
10
Ma
OUTPUT LOAD CURRENT
IL
-1
 
1
mA
LOAD RESISTANCE
Rpull-up
Rpull-down
5
5
59
59
100
100

NOMINAL OUTPUT
Vout
8
 
93
%Vcc
UPPER CLAMPING LEVEL
VCL-HI
4.77
4.8
4.83
V
LOWER CLAMPING LEVEL
VCL-LO
0.27
0.3
0.33
V
OVERALL ACCURACY ERROR
Err
 
 
1.6
kPa
PRESSURE RESPONSE TIME
T 10/9010% TO 90% OF THE FINAL OUTPUT VALUE
 
0.65
1
ms