What are the quality problems of Volkswagen EA2 1 1 engine?

First, the total * * * has three obvious problems:

1, the oil consumption is relatively large, and some of them are intuitively manifested as burning oil.

2. Some engines with equal displacement 1 below EA21use timing belts, which is very simple.

3, the noise is loud, affecting the surrounding environment.

Second, but after modification:

1 and EA2 1 1 engines are new automobile engines owned by Volkswagen. At the same time, this series of engines is also the first engine with closed cylinder system on a four-cylinder engine, which has obvious advantages in improving fuel economy.

2. Brand-new EA2 1 1 series engines, all aluminum. Firstly, it is 22kg lighter than the previous EA 1 1 series. At the same time, due to the reduction of internal friction and consumption of new engines and the more optimized thermal management system.

3. The fuel consumption of EA211engine is also reduced by 8- 10 percentage points. EA2 1 1 The timing belt configuration of the engine is restored, mainly to reduce the power consumption and noise inside the engine.

4.EA2 1 1 The way to reduce fuel consumption by improving the engine itself and technology will be more direct, and there is not much technical requirement for drivers.

At present, Volkswagen is still a good brand.

Extended data:

EA2 1 1: A turbocharged engine code-named EA2 1 1 is newly developed based on the horizontal modular MQB platform of Volkswagen, which is different from the 1.4T engine commonly used by the public at present.

So the weight of the whole machine will be smaller. The most important thing is that technicians have added a set of ACT active cylinder management system, which can close two cylinders and only run the other two cylinders under certain conditions.

Principle: EA2 1 1 1.4T turbocharged engine, and the cylinder is closed by Audi's AVS system.

In fact, cylinder closing technology is not a brand-new technology. Both Chrysler and Honda have this technology, but at present it is mainly used in V6 and V8 engines with a large number of cylinders. This is the first time that it is classified as a 4-cylinder small displacement engine.

This 1.4T engine, with closed cylinder technology, should be said to have borrowed from Audi's AVS variable valve lift technology. This AVS system only changes the valve lift and timing under different working conditions by switching two cams with different angles.

The cylinder closing system only needs to replace the high-angle cam in AVS system with the cam without lift, and this cylinder closing technology has been applied in Audi V8 4.0TFSI, and the dual-cylinder operation will lead to problems such as vibration and uneven temperature distribution.

When this technology is implanted into a four-cylinder engine, a very difficult problem comes along-vibration. At medium and low load, the system will automatically close the intake valves and exhaust valves of cylinders 2 and 3, and only cylinders 1 and 4 are driving the crankshaft to rotate.

According to the working sequence of the four-cylinder engine 1-3-4-2, when only two cylinders work, the working interval angle of the engine reaches 360 degrees, and 1 is the same as that of the four-cylinder engine, which will inevitably lead to large-scale vibration of the engine, thus affecting the comfort.

Baidu Encyclopedia: EA2 1 1