Injection of youth: history of the development of VAZ injection

Do you still know from what year the 1.6 engine was installed on the VAZ 2105?

In general, the injector started working in 2006 if I'm not mistaken.

On 9s, the injector began to appear in 2000, and on classics from 2006 or 2007.

I have a 2107 spring 2004 injector from the factory. the volume is still 1.5 coming.

Is it needed there?) In my opinion, the carb is enough. The injector is just an extra hassle)

Of course you need it) Just the opposite) Carb is an extra crap. I speak as a pelvis driver who has switched from a carb to an injector)

Messages: 9413 Registered: August 21, 2007, 00:00 From: Tyumen, 1st Zarechny Experience: since 09/11/2004 Car: Skoda Octavia :
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Post by Denver » 04 Aug 2009, 17:24

ganstown, Carb is no longer made. The first batches of injectors began to be produced at the end of 2004, but the bulk of them went into production in 2005. I remember this well, because I was on a production internship at TyumenAvtoVAZ and we came across an injector “seven” every 3 days during maintenance and it was unprecedented to look at it “miracle” almost all locksmiths came. Back in the spring of 2004, my dad bought a “seven” carb, then there was no injector, by the way, there were also “nines”.

Added after 4 minutes 30 seconds:

In general, information can probably be found on the official AvtoVAZ website

If we talk about used cars, they differ in price, the injector is naturally more expensive, but it all depends on the year of manufacture.

“Seven” is the latest representative of the VAZ series of rear-wheel drive cars. The seventh model was developed on the basis of the VAZ 2105 and differs in the shape of the seats, interior trim, shape of lighting devices and engine power.

Initially, the VAZ 2107 was equipped with a one and a half liter engine from the VAZ 2103. Subsequently, the range of engines installed on the “seven” was expanded. Cars with engine sizes ranging from 1.45 to 1.7 liters were produced for different markets. It was the 1.7 liter engine that was the first to be equipped not with a carburetor, but with an injection power system. Subsequently, the VAZ 2107 injector completely removed carburetor cars from the assembly line.

The principle of operation of the VAZ 2107 injection engine

Unlike carburetor systems, where the preparation of the air-fuel mixture occurs in the carburetor chambers, the injection system involves injecting fuel directly into the cylinders. Therefore, such a system is called a “distributed injection system”.

Injection systems are qualified depending on the principle of operation and the number of injectors. “Seven” is equipped with a separate injection system with 4 nozzles (one per cylinder). VAZ 2107 injectors are controlled by a microcontroller of the electronic engine control unit. It regulates the flow of fuel into the cylinders depending on the operating mode, the position of the gas pedal and other parameters read by special sensors.

The ECU (electronic control unit) controls the amount of fuel and air entering the engine combustion chambers. In addition, it controls the formation of a spark on the spark plugs, changing the timing depending on the speed. The ECU also turns the fuel pump on and off, regulates idle speed, controls the amount of CO in the exhaust gases, and the temperature of the coolant in the cylinder block. It all works as follows.

Gasoline from the tank, passing through the fuel filter, is supplied by a pump to the fuel rail. The latter has a pressure regulator that regulates the flow of fuel to the injectors. A pressure of 300 MPa is maintained in the fuel rail, and excess fuel is sent to the gas tank through the return pipe.

The electronic control unit opens and closes the injectors, ensuring that gasoline is supplied to the intake manifolds with each engine revolution. The amount of fuel entering the cylinder depends on the time during which the injector is open. The ECU calculates this time based on the readings of many sensors. The main indicators that affect the injector opening time are information from the mass air flow sensor and the throttle position sensor. The opening moment of the injector is determined based on the position of the pistons in the cylinder, which is transmitted to the ECU by the crankshaft sensor.

Other parameters are also taken into account:

• coolant temperature, which affects the combustion process of the fuel mixture;
• on-board network voltage, on which the injector response time depends;
• engine speed;
• exhaust gas composition.

When to replace

According to the manufacturer's instructions, replacement should be carried out after traveling 10 thousand km when driving long distances and every 6 thousand km if trips were carried out mainly over short distances.

Also, the moment of replacement can be determined by the oil pressure sensor. Long service life dilutes the oil, so a cold engine shows high pressure, but after warming up the indicator drops significantly. Such differences signal the need for maintenance.

Source

Advantages of VAZ 2107 injection models

• Due to the optimal formation of the fuel mixture, the efficiency of an injection engine is higher than that of a carburetor. Accordingly, the VAZ 2107 injector engine consumes less fuel and is at the same time more powerful than a carburetor engine with the same volume.
• Electronics regulate engine speed, thanks to which it idles more steadily, stalls less often when starting from a standstill, and starts better in cold weather.
• Unlike a carburetor engine, an injection engine does not require frequent adjustment of the fuel supply and ignition systems.
• The optimal composition and quantity of the fuel-air mixture entering the cylinders, as well as the presence of a catalyst, ensure a minimum content of harmful substances in the exhaust. This is an important point from an environmental and health perspective.
• Hydraulic chain tensioner and hydraulic valve clearance compensators eliminate the need for manual adjustment of the mechanism and ensure quieter engine operation.
• The torque curve is smoother - high torque is achieved over a wider rpm range.

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Disadvantages of the injection model of the VAZ engine

In addition to its advantages, the injection VAZ 2107 has some disadvantages:

• The location of the engine and other units in the engine compartment remains the same as in the old-style “classic”. This makes it difficult to access some parts. However, the injection system is quite reliable, so it does not require frequent maintenance during operation.
• The injection “seven” is equipped with a catalyst, which is easily damaged when driving through obstacles. Therefore, you need to be careful when driving on uneven roads.
• An engine with an injector is more demanding on fuel quality than a carburetor variation. When using low-quality gasoline, the system may become contaminated, requiring unscheduled maintenance of the unit.
• If the injection system breaks down, it will not be possible to repair it and adjust it “on the knee” in a garage. You'll have to go to a service station.

What kind of engine can be installed on the “seven” instead of the standard one?

The driver begins to think about changing the engine when, for some reason, he is no longer satisfied with the operation of the standard equipment. In general, the 2107 model is excellent for various kinds of technical experiments and tuning, but the rational approach to choosing new equipment has not yet been canceled.

Therefore, before you even think about a new motor for your swallow, you need to weigh the pros and cons, namely:

• what goals need to be achieved when replacing a standard engine;
• are there technical capabilities to safely connect the motor;
• Is it possible to do the replacement yourself, etc.

Engines from other VAZ models

Naturally, engines from cars of the same family can be installed on the VAZ 2107i without significant modifications and loss of time. Experienced car enthusiasts advise taking a closer look at engines from:

• VAZ 2114;
• "Lada Niva";
• "Lada Priora".

These are more modern power units with an increased number of “horses”. In addition, the engine dimensions and connection connectors are almost identical to the standard equipment of the “Seven”.

Engines from foreign cars

Imported engines are rightfully considered more reliable and durable, so the idea of ​​installing a foreign-made engine in a VAZ 2107i often excites the minds of drivers. It must be said that this idea is quite feasible if we take Nissan and Fiat models from 1975–1990 as donors.

The thing is that Fiat became the prototype of the domestic Zhiguli, so structurally they have a lot in common. And Nissan is also technically similar to Fiat. Therefore, without significant modifications, you can install engines from these foreign cars on the VAZ 2107.

Nissan Silvia is an excellent donor for the VAZ 2107i, since the procedure for replacing engines is possible without the involvement of service station specialists

Rotary power units

On "sevens" rotary engines are not that uncommon. In fact, due to the specifics of their work, rotor mechanisms can significantly optimize the operation of the VAZ 2107i and give the car acceleration and power.

An economical rotary engine ideal for the 2107 is a modification of the RPD 413i. The 1.3-liter unit develops power up to 245 horsepower. The only thing the driver should know about in advance is the drawback of the RPD 413i - a service life of 75 thousand kilometers.

A very powerful rotary engine will make any “seven” fly

Today, the VAZ 2107i is no longer produced. At one time it was a good car at an affordable cost for living and working. The injection modification of the “Seven” is considered to be maximally adapted to Russian operating conditions; moreover, the car is easily amenable to various kinds of under-hood upgrades and alterations.

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Malfunctions of the VAZ 2107 injection engine

Problems with the 7 injection engine usually manifest themselves as follows:

• The engine is running erratically.
• Fuel consumption of the VAZ 2107 has been increased.
• There is an increased CO content in the exhaust gases.
• Dips when pressing the accelerator pedal.
• The engine “does not pull” (reduced power).
• To diagnose injection system faults, special equipment is required. In particular, in order to read error codes and check sensor readings and the operation of the engine ECU, a special computer (tester) is required. Therefore, repairs and diagnostics of the VAZ 2107 injector are carried out at specialized service stations. The most common cause of injector failure is clogged injectors.

Troubleshooting - identify and eliminate

At an average speed of 80–100 km, this car consumes 6.5–7 liters per 100 km. This flow rate was achieved using an injector. An injector is a device that completely replaces the operation of a carburetor. It consists of injectors and a fuel rail, as well as electronic sensors that give a signal for fuel injection. Fuel is injected into the engine using injectors, so it is very important to monitor and clean them on time so as not to interfere with the operation of your car’s engine. It is also worth refueling with high-quality octane fuel.

As a result of untimely replacement of fuel and air filters, as well as the use of low-quality fuel, the injector may fail. Don’t rush to a car service center - first, make sure that the reason for the poor performance of the car and the decrease in power lies not in these spare parts, but in something else. One of the main reasons for poor injector performance is incorrect operation of the control unit, the so-called computer. To identify the causes, you need to go through; in some cases, you will need to completely flash the unit.

During poor injector operation, the VAZ 2107 significantly increases fuel consumption, and the corresponding indicator should light up on the instrument panel, indicating the presence of an operating error. Problems in operation are also indicated by a decrease in engine power, and failures are also possible when pressing the gas pedal.

You can do a complete one at a car service center, or, after purchasing the necessary ones, you can do everything yourself.

These procedures will cost you much less, but they require technical skills and care. Before carrying out work, it is necessary to check all electronic sensors. This action can be performed by turning off the chips on them, and a characteristic sound should be heard on the instrument panel and one of the indicators should light up.

Causes of injector clogging

Typically, problems with the injection system occur when using low-quality gasoline.
Heavy paraffins contained in such fuel settle on the walls of the system, cutting off the fuel supply. Manufacturers of high-quality gasoline add detergent to it - a special additive that dissolves deposits. Low-quality gasoline contains too much paraffin, which forms deposits faster than detergents can remove them. Deposits form more intensively at low temperatures, so when the car is frequently driven with a cold engine, the injector becomes clogged more often.

Deposits can accumulate not only in the injectors. Often vapors settle on the throttle valve, which leads to a change in the proportions of the air-fuel mixture entering the cylinders.

Deposits of substances contained in low-quality gasoline may also appear on the back of the intake valve plates. This can lead to valve burnout or fuel detonation.

To clean the injection system of deposits, it is necessary to use special flushing fluid and equipment. You can wash the injector in a garage. To do this, you need a syringe and washing liquid. The latter is mixed with gasoline and poured into the injection system through the hose of the vacuum brake booster. First, the operation is performed with the engine turned off, then with the engine running. The mixture is fed into the running engine gradually, in small portions. As a result, the deposits dissolve, enter the engine cylinders and burn there. In this case, clouds of smoke may briefly appear coming out of the muffler.