/ How does an injector engine work?

How does the injector engine work?

The power supply system of the injector engine or,in simple terms, injection - the fuel supply system, which is used for engines running on gasoline, and has advantages over carburettor.

Injection motor makes easy startregardless of any weather conditions. Such a system can correct itself during operation, flexibly shifting the cooking parameters, the air-fuel mixture, based on the readings of the sensors, the information from which is fed to the electronic control unit (ECU).

To date, the injection enginealmost completely excluded the use of an outdated carburettor system. With its appearance, the dynamics of overclocking has substantially improved, the amount of harmful substances released into the atmosphere has decreased, the consumption of motor fuel has decreased. He instantly reacts even to the minimum changes in the load.

Injection systems are classified by position andnumber of nozzles. Currently, the most popular is the one with an injector engine with distributed fuel injection, where an individual nozzle is provided for each cylinder. All injectors are connected to a ramp in which the fuel is under pressure. It creates an electric gasoline pump. The amount of fuel injected into the system depends on the opening time of the injector.

How long it will be open, adjusts the computer(controller). The device of the injector motor is such that, based on the result of processing the readings from various sensors, the ECU starts the injection engine. The mass flow sensor is used to calculate the cycle of filling the cylinders. The volume of the consumed air is measured, then the electronic control unit recalculates in cylinder filling cycles. Engine power is increased to 10% due to improved cylinder filling, optimal ignition timing, which corresponds to the operating mode of the engine. If the sensor is broken, a calculation is made for certain tables.

The throttle position sensor is used to calculate the load on the motor. In the event of a change in engine operation, cylinder filling cycles, the angle of rotation of the throttle valve changes.

Temperature sensor for coolantIt is used to determine the correction of the fuel supply from the temperature parameters and to control the electric fan. If it fails, the indications are not taken into account, the parameters, depending on how long the engine is running, are taken from the emergency table.

In order for the system to work in sync,to determine the engine speed, the crankshaft position at certain times, a polar sensor is used to determine the position of the crankshaft. If you turn on the wrong engine injector simply does not start. If this sensor breaks, the system will not work. It is very important, and if, with the failure of other controllers, the car can go, without it the car will not start.

In the injection system there is feedbackthe exhaust system, just before the catalyst, is equipped with an oxygen content sensor in the exhaust gases of the car (it is also called the lambda probe). The information it gives out is used by the system to correct the right amount of fuel supplied to the injector system, accurately maintaining the required parameters of the working mixture, hence, fuel consumption becomes more economical, and the level of toxicity of exhaust gases decreases.

Here are the main necessary for workInjection system sensors. The power system of the injector engine, depending on which engine is installed on your car, can be equipped with various controllers.