Crankcase Ventilation Pressure Sensor

The crankcase ventilation pressure sensor is a sensor composed of the pressure difference between the crankcase and the atmospheric pressure.

Feature and benefits

Relative pressure output /Derived from a MEMs based sensing element

Performance and customer interface compatible with Bosch TMAP

Single chip solution ,SMT for EMA fabrication process

laser marking for better traceability

Different pressure ranges are available on customer request

Application

Check the pressure between the piston ring and the cylinder block in the crankcase. Prevent oil deterioration, prevent crankshaft oil seal and crankcase gasket from leaking, and prevent various oil vapors from polluting the atmosphere.

Operate
Basic principle

Piston ring leakage gas (combustion gas composition, which enters the crankcase through the piston) generated during fuel combustion shall not be discharged into the air under uncontrolled conditions. Therefore, on the one hand, the crankcase ventilation device is used to re-introduce such gas into the combustion device, on the other hand, it is responsible for controlling the negative pressure in the crankcase.

Measure the pressure difference between the pressure in the crankcase and the atmospheric pressure and send it to the engine control unit in the form of a signal. The engine control unit uses this signal to identify whether the crankcase ventilation device is leaking.

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
 
115
PRESSURE RANGE
P
-5
 
5
kPa
SUPPLY VOLTAGE
Vcc
4.75
5
5.25
V
LOAD RESISTANCE
Rpull-up
4.7
 
 
NOMINAL OUTPUT
Vout
10
 
90
%Vcc
UPPER CLAMPING LEVEL
VCL-HI
4.67
4.7
4.73
V
LOWER CLAMPING LEVEL
VCL-LO
0.27
0.3
0.33
V
OVERALL ACCURACY ERROR
Err
 
 
3.4
%Vcc
Safety pressure
Psafety
 
68
 
kPa