2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42
The nozzle is a fuel dispenser. Also, its function is to make an air-fuel mixture and spray it into the combustion chamber of the engine.
To understand where the injector is located in the car, you need to know what fuel system it works in.
Central injection nozzle
Where is the injector of the central injection system (monoinjection) in the car? It is located in the intake manifold itself (or the manifold through which fuel flows from the carburetor to the engine cylinders) before the throttle valve, which is necessary to regulate the air supply to the system).
This is the first injection system designed to replace carbureted engines. It has only one nozzle for 4 cylinders (which is why it is called "mono injection"). The injector atomizes the fuel above the throttle valve, which enriches it with air. Then this mixture enters the intake manifold and is distributed among the cylinders. The whole process is controlled by various sensors.
Port injection nozzles
Where to find injectors in the cardistributed injection? This system is more complex. It has 4 nozzles equipped with solenoid valves. They are located in the intake tracts of the cylinders, one for each.
The injector delivers gasoline to the inlet valve of the cylinder. The fuel evaporates and mixes with air (the same throttle valve is responsible for its supply). Unlike single injection, here the fuel mixture is formed in the cylinders themselves.
The operation of the injectors is controlled by an electronic control unit. It is he who signals the Check Engine indicator on the dashboard in case of a malfunction in the engine.
Direct injection nozzles
Direct injection system - the "youngest" in relation to the application on the car. It is easy to guess where the nozzles of this system are located in the car. They completely "crept up" to the combustion chamber and settled in the upper part of the cylinder. Accordingly, the fuel enters immediately into the combustion chamber and is already mixed with air there. Many sensors are responsible for the operation of the nozzle, information is sent to the control unit.
The operation of the injector in this system is much more complicated: the pressure for supplying fuel is much higher, and dual fuel injection is triggered to sharply increase the speed of the car at low revs.
There are two types of mixture formation in such an engine. Accordingly, the nozzles can operate in two modes:
- Latering occurs when the engine is running atlow and medium speeds (injector delivers fuel at the end of the compression stroke).
- A homogeneous mixture of air and fuel is needed at high speeds (here the injector fires on the intake stroke simultaneously with the air supply).
In both cases, there is significant fuel savings with high efficiency.
Gas nozzles
Cars run not only on gasoline or diesel fuel, but also on gas. As a rule, a gas installation is an additional equipment in the car that is not provided by the manufacturers. Conventional fuel injectors are not designed for such a device. Therefore, the gas cylinder and reducer are supplied with their own nozzles, which are mounted in the engine.
To find where the nozzles of gas equipment are located in the car, just open the hood. They are a plastic block of four sections (inside each there is a nozzle) with hoses connected to them. This design is attached as close as possible to the standard injectors.
Differences between a gas injector and a petrol injector:
- The cross-sectional width of gas is many times larger, since a larger volume of fuel passes through it than through gasoline.
- The greater electrical resistance of the petrol injector is due to the need to pass less fuel.
- The principle of controlling the injection of a gasoline injector is to supply a single electrical impulse, while the gas one is triggered by two short ones.
How and why to adjust gas injectors
After installing the gas equipment, the ECU needs to be "explained" how to calculate and supply gas. To do this, use special adjustment programs. They are similar in interface. Can be used both independently and at specialized services.
Cleaning and adjustment of gas injectors should be carried out after some time of operation, if symptoms of their incorrect operation appear: the car starts with difficulty, refuses to run on gas (stalls or jerks). Most often they occur due to impurities that are added to gas at gas stations.
To get rid of the problem, you need to change the fine filter and put the nozzles in order.
We determine where the HBO nozzles are located in the car, remove them. The epicenter of the clogging is in the chamber with the stem. We disassemble it, clean it (preferably with alcohol) from adhering resin, then assemble it back.
Using a micrometer, we calibrate the gaps of each rod (they must be the same for all four). If there is no such device, you can contact the HBO repair service.
Recommended:
Truck battery: what are they and how do they differ?
Do I need to say that in any weather, in any weather conditions, your car must be in working condition? Changing oil, replacing tires, filters, antifreeze or antifreeze on time does not give you a full guarantee that the truck will start. Especially in the cold. The battery is what you need to keep your car running smoothly
What do they wash the car with? Instructions and rules for the use of detergents and cleaners when washing a car
Before, cars were washed in yards and garages with rags from a bucket. Now times have changed. Almost no one does it manually anymore, and if they do, it is with the help of pressure washers. In most cities, a variety of car washes provide services. How do they wash cars in most cities?
Badges of car brands and names. German, American and Chinese car brands and their badges
Badges of brands of cars - how diverse they are! With and without a name, intricate and simple, multi-color and plain … And all are very original and interesting. So, since German, American and Asian cars are the most common and in demand, then using the example of their best cars, the topic of the origin of emblems and names will be revealed
Injectors in a car: where are they located and what are they for?
All diesel and gasoline internal combustion engines that exist today have a fuel injection system in their design. The nozzle is an analogue of a pump that supplies a powerful, but very thin jet of fuel. It is an integral part of the injection system. Where are the nozzles and what is their principle of operation will be described later
What are car start chargers and how much do they cost?
Probably every motorist has faced the problem of a dead battery. This is especially unpleasant when everything is discovered 5 minutes before departure. There are two ways out of this situation. The first is the installation of a new, pre-charged battery on the car. The second is recharging the old battery with a special device. Of course, the first method will solve the situation very quickly, but few of us keep 2 charged batteries in the garage
