Honda Accord Denso oil pressure sensor 499000-7941 pressure switch control valve
The role of automotive pressure sensors
1. Adjust the camshaft to control the opening Angle and opening time of the intake valve, that is, the V V T system (variable valve system);

2, adjust the injection timing, control the intake harmonic wavelength, making the intake more smooth;

3, intake pressure sensor, referred to as MAP. It is connected to the intake manifold with a vacuum tube, and with the different speed load of the engine, the vacuum change in the intake manifold is induced, and then the resistance change in the sensor is converted into a voltage signal for the ECU computer to correct the injection amount and ignition timing Angle. In other words, the ECU computer outputs 5V voltage to the intake pressure sensor, and then detects the voltage value by the signal end. The computer, when the engine is idle, its voltage signal is about 1-1.5V, and when the throttle is fully open, there is about 4.5V voltage signal.
The automotive pressure sensor is used to control the oil pressure of the brake system with the oil pressure booster. It detects the pressure of the reservoir, the closing or disconnecting signal of the output oil pump and the abnormal alarm of the oil pressure.

Automotive pressure sensors are commonly used to measure the pressure of liquids and gases in vehicles, and can therefore be used in many vehicle systems. By application, the automotive pressure sensor market can be segmented into drivelines, engine control systems, power steering systems, heating, ventilation and air conditioning systems (HVAC), airbags, anti-lock braking systems (ABS) and Direct tire Pressure monitoring Systems (directTPMS).