The engine of the Volkswagen Polo sedan 1st generation



Volkswagen Polo sedan
Volkswagen Polo sedan

The engine Volkswagen Polo sedan, which we’ll talk about today, as early as 2015 will be produced directly in Russia, at the new Volkswagen engine plant. True timing chain will be replaced by a belt, and the power of the unit will grow by 5 horsepower. In addition to the Polo sedan, a 1.6-liter gasoline engine is now installed on a larger Jett model, Skoda Octavia and Rapid. The most demanded from our customers power unit 1.6 liters is produced in two versions of 85 and 105 hp. With the 16 valves (factory designation CFNB and CFNA respectively).

The difference between the 85 strong version and the 105 strong modification of the Volkswagen Polo motor lies in the design features of the cylinder head unit and the availability (or lack thereof) System of change of phases . Naturally, because of the presence of a system of changing the phases of the timing of the 105 strong version is more powerful, dynamic and economical. First, let’s talk about a more powerful Polo sedan engine.

So, engine Polo 1.6 16V has the factory name CFNA. This gasoline, four-stroke, 4-cylinder, in-line, 16-valve, with two camshafts. Under the hood stands transversely. The order of the cylinders: 1-3-4-2, the countdown – from the pulley crankshaft. The engine power system Volkswagen Polo sedan is a phased distributed fuel injection. The engine is mounted on three elastic rubber mounts. The right hydraulic support is attached to the bracket attached to the timing cover, and the left and rear engine mounts are attached to the brackets on the gearbox housing.

The block of cylinders of the engine Volkswagen Polo aluminum, the block head is also aluminum, at the same time the engine crankcase is also made of aluminum alloy. In the 16-valve version, the candles are screwed on top of the center of the combustion chamber. Timing belt drive . The chain in the engine makes the Polo Sedan 1.6 unit very reliable and durable. In addition, in the cylinder head are hydraulic compensators which automatically regulate the thermal clearance of the valves. The engine is very sensitive to the quality of the oil. Bare oil and its reduced level can lead to rapid wear of the hydraulic compensators.

In the Polo Sedan 1.6 engine there is a system of infinitely variable valve timing of the intake valves, which makes the motor elastic in all ranges of operation. In the engine there is a non-contact ignition system with four coils. All work of the power unit is controlled by the electronic control unit (the brains of the motor). The electronic system controls the distribution of fuel. Feeding of the dosed working mixture into the cylinders is carried out through the throttle assembly in accordance with the valve timing phases. Further detailed characteristics of the engine Volkswagen Polo 1.6 16V CFNA .

Engine Volkswagen Polo sedan 1.6 16V Specifications, fuel consumption

  • The working volume is 1598 cm3
  • Number of cylinders – 4
  • Number of valves – 16
  • The diameter of the cylinder is 76.5 mm
  • The stroke of the piston is 86.9 mm
  • Power hp / kW – 105/77 at 5600 rpm
  • The torque is 153 Nm at 3800 rpm
  • The compression ratio is 10.5
  • Timing-Timing / Timing – DoHC / Chain
  • The brand of fuel – gasoline AI 95
  • Ecological class – the Euro-4
  • The maximum speed is 190 km / h
  • Acceleration to 100 km / h – 10.5 seconds
  • Fuel consumption in the city – 8.7 liters
  • Oil consumption in the mixed cycle – 6.4 liters
  • Fuel consumption on the highway – 5.1 liters

Above are presented the dynamic characteristics and fuel consumption of the Polo sedan with a mechanical box, with the automatic machine these indicators are worse. So acceleration to a hundred with automatic transmission takes already 12.1 seconds, and fuel consumption increases by half a liter of gasoline.

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A simpler motor on Volkswagen Polo sedan 1.6 without the variable valve timing system on the intake shaft appeared not immediately, but after the manufacturer had to reduce the price of the car in the struggle for customers. The simplified version of the Polo sedan engine made the car a little cheaper, but the car’s power also fell. This engine has a factory index CFNB. The chain mechanism has remained, but the cylinder head is now in a simplified form without the executive mechanism of the stepless phase change of the timing.

Establish 85 powerful Polo Sedan engine only in combination with a mechanical transmission. In the model range of the company in Russia, a new power unit appeared only in the middle of last year. Actually, therefore, there is not much information about the detailed device and engine design, but the main characteristics are known.

The engine of the VW Polo sedan 1.6 85 hp (Gasoline) specifications, fuel consumption, dynamics

  • The working volume is 1598 cm3
  • Number of cylinders – 4
  • Number of valves – 16
  • The diameter of the cylinder is 76.5 mm
  • The stroke of the piston is 86.9 mm
  • Power hp / kW – 85/63 at 5200 rpm
  • The twisting moment – 145 Nanometers at 3750 rpm
  • The compression ratio is 9.8
  • Timing-Timing / Timing – DoHC / Chain
  • The brand of fuel – gasoline AI 92
  • Ecological class – the Euro-4
  • The maximum speed is 179 km / h
  • Acceleration to 100 km / h – 11.9 seconds
  • Oil consumption in the city – 8.7 liters
  • Usage in the mixed cycle – 6.4 liters
  • Fuel consumption on the highway – 5.1 liters

Whichever Polo sedan engine you choose, it is a reliable quality and durable unit. Of course, provided careful operation and timely maintenance.

But we recall that in 2016, Polo sedan put a new engine of the Russian assembly in volume of 1.6 liters with a belt in the timing case . The power of the units is 90 and 110 hp, that is, one option without the system of changing the timing of the timing, more powerful with a system of infinitely variable valve timing on the intake shaft.

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