Air Pressure Sensor, height adaptation - V40-72-0287 VEMO

The turbocharging pressure sensor is an important component of a turbocharged engine. The power performance of the motor depends on its correct operation.

An atmospheric combustion engine, consuming air, creates a vacuum in the intake manifold, and in the case of a supercharged engine, on the contrary, a higher pressure is created in the manifold in comparison with atmospheric pressure. One way or another, this pressure must be measured, because when assessing the load on the engine, the ECU is repelled precisely from the amount of vacuum or boost. As a result, a strictly defined amount of fuel must be injected, no more (to avoid overspending) and no less (to avoid detonation). To measure the absolute pressure in the intake manifold, a MAP-sensor (VEMO brand Sensor, intake manifold pressure) was created.

1. ASTRA J Sports Tourer (P10)
2. ASTRA Mk VI (J) Estate (P10)
3. ASTRA H Estate (A04)
4. ORLANDO (J309)
5. CRUZE (J300)
6. ZAFIRA B Box Body/MPV (A05)
7. AVEO Hatchback (T300)
8. SONIC Hatchback (T300)
9. CRUZE Hatchback (J305)
10. AVEO Saloon (T300)
11. SONIC Saloon (T300)
12. ZAFIRA TOURER C (P12)
13. ZAFIRA C (P12)
14. ZAFIRA Mk III (P12)
15. ASTRA J GTC
16. ASTRA J Coupe
17. LACETTI (J200)
18. NUBIRA Saloon
19. OPTRA Saloon
20. NUBIRA Estate
21. See more in applications

The principle of the sensor work

The turbocharged engine monitors the boost pressure and transmits the received data to the engine control unit, which calculates the required boost for the current operating mode of the unit. The boost pressure sensor, together with an intercooler and a compression ratio regulator, prevents knocking.