FUEL INJECTION

ECU- Electronic control unit?

The ELECTRONIC CONTROL (ECU) is the generic term for embedded system that controls more of the electrical systems then the subsystems in the motor vehicle. There are quite a few a names for the ECU, INCLUDE ECM electronic control module, CCM central control module, and sometime referred to the vehicle computer and controls most if not all the electrical components.

Mass air flow sensor?

A mass air sensor can also be known as air flow sensor and is a component of the fuel injection engine and its function is to measure the amount of air entering the engine , also is a component electronic fuel injection system of a modern automotive vehicle.

Air Temp sensor?

The Air Temp. Sensor is used to measure the temperature of the engine coolant as the temperature changes constantly, and the information the sensor got was monitored by the ECU and then could control the different ignition, how much fuel and control functions, if needed turn on or off the cooling fan.

TPS throttle position sensor?

A throttle position sensor (TPS) this sensor is used to keep track of the position of the throttle in an combustion engine. The sensor is located on the butterfly spindle so it can easily and directly measure and know the position of the butterfly throttle valve. The sensor the is usually if not always a potentiometer and therefore provides a constant resistance depending on the position of the valve and by that also knowing the throttle position.

Throttle body?

In fuel injected engines, the throttle body is apart of the air intake system that controls the amount of air flowing thru the engine, in response to the acceleration pedal being pressed. The throttle body is found between the air filter box and the intake manifold, and it is mostly attached to or close to the mass air flow sensor. The acceleration pedal of many cars the motion of this pedal is communicated thru the throttle cable, so it could activate the throttle linkages, which move the throttle plate. Cars with electric throttle control or better known as Drive-By-Wire, the electric motor controls the throttle links and the accelerartor pedal is nt connected to the throttle pedal but your sensor. Which sends the position of the pedal to the ECU and then the ECU determines the throttle opening based on the position of the pedal and inputs of other sensors.

Temp sensor?

An air temperature sensor are found in and used on fuel injected engines. The function of this sensor is to help the computer or ECU calculate air density. The slightest change in temperature changes the resistance of the sensor, the higher the temperature the less dense it becomes. As the air gets less dense so the computer picks that up and starts to lessen the fuel flow. If fuel is not lessen the engine might get rich, and loss power and taking in more fuel. The air temp. sensor is found in the air inlet tupe.

fuel rail?

Fuel rail is commonly a pipe. Used to control the flow of fuel that is given to each individual fuel injector on a combustion engine. It’s design is to have a pocket for each injector as well as an inlet valve for the fuel to flow in, some fuel rails are incorporate an fuel pressure regulator. Fuel rails are used in engines with multi-point fuel injection systems, even though there a couple engines that still use fuel distributor with individual pipes to injectors.

Fuel pressure regulator?

A Fuel pressure Regulators main job is to keep constant watch over the pressure of the fuel and keep it constant pressure. The fuel pressure regulator is in control of the set fuel pressure of the system.

Injectors?

Injectors are Found in automotive vehicles also with a ECU system. All the fuel injectors are supplied by the fuel rail and then fuel is sprayed with a high pressure into the cylinder head, also injectors replace carburettors because of the changes in emission.

Idle air control?

The idle air control  is electrically operated valve that allows air to get pass the throttle plate, In most fuel injected engines it must regulate the engine idle speed.

O2 sensor ( lambda sensor)?

The O2 sensor is found in the exhaust manifold, is used by the ECU to regulate the oxygen levels in order to adjust fuel ratio.

Map sensor?

The Manifold Pressure sensor (MAP) is one of the sensors used by the ECU system and an internal combustion engine. Most vehicle’s that use MAP are fuel injected. The MAP sensor gives instant pressure readings and information gathered by the MAP is given to the cars ECU system. Then the information is used to determine air density and the engines air mass flow rate,  and then Knows the required fuel for the best combustion. 

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