What are the sensors used in electronic fuel injection system?

Electronic fuel injection (EFI) system use engine sensors, a computer and solenoid operated fuel injector to meter and inject right amount of fuel into the cylinders. An electronic control unit receives information in the form of electric signals from the sensors.

How do electronic fuel injection systems work?

Electronic fuel injection allows for extremely precise control over how much fuel is sprayed into the cylinders. The fuel pressure regulator knows how much fuel to let through to the injectors via a signal from the mass airflow sensor (MAF). This sensor tracks how much air is entering the engine at any given time.

How does the ECM control the fuel injection?

Fundamentally, the engine ECU controls the injection of the fuel and, in petrol engines, the timing of the spark to ignite it. It determines the position of the engine’s internals using a Crankshaft Position Sensor so that the injectors and ignition system are activated at precisely the correct time.

Do fuel injectors have sensors?

The injector control pressure sensor detects the pressure of the fuel feeding the injectors, and sends that signal to the computer so that it can make the adjustments for optimum performance and efficiency.

How many sensors are in a fuel injection system?

There are 2 types of O2 sensors, standard and wideband. Both tell the ECU if the Air/Fuel Ratio is correct. A standard O2 sensor sends either a rich or lean signal to the ECU. A Wideband or Air/Fuel (A/F) oxygen sensor can tell exactly how much oxygen is in the exhaust.

Does ECM control fuel injectors?

An engine control unit (ECU), also commonly called an engine control module (ECM) is a type of electronic control unit that controls a series of actuators on an internal combustion engine to ensure optimal engine performance. The fuel injection system has the major role of controlling the engine’s fuel supply.

What is the difference between EFI and MPi?

EFi stands for Electronic Fuel injection (EFi) whereas MPFi or MPi stands for Multi-Point Fuel injection and GDi stands for Gasoline Direct Injection. The carburetor, being a mechanical device, was just not fully capable of controlling an accurate air-fuel ratio to meet the growing demands for better emission control.

Which is better carburetor or EFI?

Warren Johnson: Properly tuned, carburetors make more peak power than EFI in a Pro Stock engine. EFI performs well over 2,000 rpm or more. On average, if optimized, both systems perform about the same as far as how fast you get down the track. However, the EFI system is much easier to tune than a carburetor.

Where is the ECU located?

SEAT. On most models the ECU is located beneath the wipers behind the plastic trim.

Where is the ICP sensor located?

The ICP sensor is located on the driver side cylinder head towards the front of the engine near the high pressure oil pump. Remove the electrical connector from the ICP sensor by relieving the retaining clip and pulling upwards away from the sensor.

What sensors control ignition timing?

A crank sensor is an electronic device used in an internal combustion engine, both petrol and diesel, to monitor the position or rotational speed of the crankshaft. This information is used by engine management systems to control the fuel injection or the ignition system timing and other engine parameters.