Table of Contents
What does atmospheric pressure sensor do?
The barometric sensor, also commonly known as the barometric air pressure sensor (BAP), is a type of engine management sensor commonly found on many vehicles. It is responsible for measuring the atmospheric pressure of the environment that the vehicle is driving in.
What is barometric pressure in a diesel engine?
Bosch barometric pressure sensors are a key component in engine management for diesel and gasoline engines. They are designed to measure the current ambient pressure accurately and with low drift. Atmospheric pressure is a function of height above sea level as well as of weather conditions.
How is atmospheric pressure reported?
Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes. One atmosphere is 1,013 millibars, or 760 millimeters (29.92 inches) of mercury. Atmospheric pressure drops as altitude increases.
How does the fuel pressure sensor work in a diesel engine?
Fuel Pressure Sensor The fuel pressure sensor that is used in the common-rail type diesel detects the fuel pressure in the common-rail. Based on the signals from the fuel pressure sensor, the ECU controls the SCV (Suction Control Valve) to generate a prescribed fuel pressure in accordance with the driving conditions.
How is the atmospheric pressure sensor used in a car?
The Atmospheric Pressure Sensor is used by the ECU to determine the air pressure of the ambient air in or around the vehicle. The ECU uses this input to adjust air/fuel ratio and ignition timing for changing altitude conditions (and thus density of the air entering the engine).
What does a barometric air pressure sensor do?
Average rating from 17,525 customers who received a Change Oil and Filter. The barometric sensor, also commonly known as the barometric air pressure sensor (BAP), is a type of engine management sensor commonly found on many vehicles. It is responsible for measuring the atmospheric pressure of the environment that the vehicle is driving in.
How are pressure sensors used in a turbo engine?
On turbocharged engines, manufacturers use sensors capable of measuring pressure both above and below atmospheric pressures. Therefore, they can provide a measure of the boost (extra air mass) provided by the turbocharger. Generally, MAP sensors fall into three pressure measurement categories, ranging from atmospheric, up to: