Автомобили немецкого производства славятся своей reliability, high-quality assembly, durability. They have gained popularity all over the world due to their impressive technical characteristics, in the formation of which a special place is occupied by power plants, among which CFNA remains quite modern and in demand to this day - the 1.6-liter engine.
Production
CNFA is a 4-cylinder in-line gasolineengine with 16 valves, distributed fuel injection system. One of the features of the model is a chain gas distribution mechanism DOHC - now two camshafts are located in the cylinder head.
В настоящее время на рынке можно найти две The main modifications of this installation are the capacities of 105 and 85 hp, as well as the timing belt drive. Until 2015, all engines were exclusively German-made, but now there are models on the domestic market with units assembled at the Kaluga Plant. Their main difference from the “Germans” is the timing belt drive.
Specifications
Up to 190 km / h German CFNA can accelerate-engine. Characteristics for the most common version with 105 hp With a manual transmission, this can not be called impressive:
- working volume - 1598 cm3;
- torque - 153 N * m at 3800 rpm;
- acceleration to 100 km / h - 10.5;
- power - 105 hp or 77 kW at 5,600 rpm;
- The brand of recommended fuel is AI95.
Not happy and fuel consumption.When driving around the city, you will have to fill in 8.7 liters per 100 km, on the highway - 5.1, in the combined cycle - 6.4 liters. Moreover, when choosing an automatic transmission, fuel consumption increases by more than half a liter.
- maximum power - 85 hp or 63 kW at 5200 rpm .;
- maximum torque - 145 N * m at 3750 rpm;
- maximum speed - 179 km / h;
- acceleration to 100 km / h - 11.9 s.
Only models with manual transmission are available for purchase.The fuel consumption of this combination is similar to a 105 horsepower unit. But the differences between the engines are manifested in their design. Firstly, a more powerful installation has a stepless system for changing the valve timing on the intake shaft. A feature of the unit is 85 liters. from. It is possible to use the 92nd gasoline without any consequences.
Engine design
Volkswagen did not plan to introduce completely new elements when developing the unit - the motor turned out to be quite ordinary, but some new products are still present.
The main features of the CFNA engine are manifested in the gas distribution mechanism - for convenient maintenance, all elements are protected by plastic covers, and important mechanisms are highlighted in bright color.
But the main thing in the engine is the cylinder block.It is made of light aluminum alloy, which simultaneously reduced the weight of the structure and increased its heat transfer. Special channels of the main oil line, its flanges and tides are cut out on the cylinder block.
Sleeves differ in thin walls, made of cast iron. Beds of main bearings are assembled. The cylinder head is a monolithic aluminum construction.
Lubrication and fuel injection systems
Particular attention should be paid to the lubrication system.main nodes - it is a combined type. The most loaded mechanisms are processed under high pressure, and the other elements in two ways - directional and random spraying of oil flowing from the gaps between the elements. In the CFNA 1.6 engine, lubrication is pumped by a pump in the crankcase - it is driven by a crankshaft. It houses a replaceable full-flow filter made of porous paper.
Thanks to such a scheme of functioning inThe CFNA engine receives a balanced amount of combustible mixture at every moment of its operation. This, in turn, allows you to reduce energy consumption, the amount of toxic emissions and get the maximum possible power. Manages the ECU fuel supply system in conjunction with the controller.
Service Features
The manufacturer guarantees normal operationengine over 200 thousand km with timely and quality service. Scheduled work should be carried out every 15 thousand km when operating cars in normal conditions, and twice as often in difficult ones.
At the first MOT, it will be necessary to replace the motoroil. It is recommended to fill in 5W40 lubricating fluid with VW-Norm 502 approval - it will not only provide the VW CFNA engine with normal operation, but also increase its service life and reduce the amount of fuel consumed. At the same time, replace the oil filter.
In all other respects, you must adhere to the usual maintenance requirements - regularly check drive belts, conductive hoses and lines, and the CFNA engine will not force itself to be repaired.
Features of work
Introduced engine of serious problems withoperation does not cause. If you bought a car from the factory, carefully monitor the level of engine oil for the first 1-1.5 thousand km - during the break-in period, its increased consumption was observed, but the lubricant volume never decreased below a critical value.
Common problem
Every car owner with a submittedengine ran into one problem - knocks, rattling, diesel sound during operation. The reasons for the increased noise level are the special shape of the pistons, as well as the “tightness” of the exhaust manifold. There are two ways to solve the problem:
- Installing modified pistons with the ET marking - this option is preferred for machines whose warranty has not yet expired, because the service center undertakes to carry out the work.
- Replacing pistons and exhaust manifold with 4-2-1beskatovy with simultaneous reprogramming of the control unit - this way will not only get rid of noise, but also increase the power of the installation, but it will have to be carried out independently.
Such work will have to owners of VWPOLO - the prerogative of these particular cars is this engine. Moreover, it will be necessary to carry out repair procedures periodically - after an indefinite period of time, a knock will appear again - this is the design of the motor. But knocking violates only the acoustic idyll, and does not affect the resource and does not signal typical malfunctions.
note
Knocking underhood when driving on rough roads. If the suspension of the car, steering rack is in order, then the left engine mount is faulty. It very often does not withstand stress and requires replacement.
To prolong the service life, fill onlyhigh-quality fuel with an octane rating of at least 95 per CFNA engine - problems of unstable operation, jerks and jerks will then bypass you. In cases of difficulty starting in severe frost, inspect the starter.
A low-cost solution to this problem could be argon-arc welding. But you can only use it after the expiration of the warranty, otherwise you will lose the right to service.
Unit tuning
CNFA engine stocked uppower, which guarantees stable operation for a long period. But you can use the reserve to increase power. Having done simple operations, the amount of horsepower can be increased from 105 to 130. For this, it is necessary:
- Buy and install a 4-1 or 4-2-1 exhaust rimless collector.
- Make or purchase a cold air intake system.
- Reprogram the electronic control unit.
Such manipulations are usually carried out by the owners of VW POLO. It makes no sense to carry out other additional operations, because the cost of all work will be higher than the price for a more powerful and modern engine.
Recommendations
To extend the life of the power plant, refuel only at trusted bus stations. The difference in the quality of German and domestic fuel seriously affects the resource.
It's all about graphite spraying a piston group- It quickly abrades when using second-class fuel, which leads to the appearance of scoring. Never allow the unit to overheat. This greatly affects the consumption of oil, the lack of which instantly leads to "sticking" of the connecting rod bearings.
For these reasons, drivers are advised to followmainly for the quality of the fuel used and the level of engine oil. Reviews on the CFNA engine are mostly positive. Choosing a car with such a power plant should be for those who are looking for a budget solution for a calm and measured ride.
