I. About EA2 1 1 Engine
EA11series engines have almost become the standard of small/compact models made by Volkswagen. EA2 1 1 includes 1.0, 1.4, 1.6 displacement naturally aspirated engines and 1.2. To the sagitar Volkswagen model.
Second, the architecture of EA2 1 1:
Iii. Improvement of EA2 1 1;
1, lightweight:
EA2 1 1 Lighter all-aluminum cylinder is used to reduce weight 16kg. The lighter connecting rod also reduces the inertia of piston reciprocating motion and internal friction. After a series of optimization, EA2 1 1 series engines can reduce the weight by 30% at most, while reducing fuel consumption and carbon dioxide emissions 10% to 20%.
2. Integration of cylinder head and exhaust manifold
Utility: warm up quickly, so that the engine can reach the ideal working condition faster.
When the car started, because the fuel efficiency of the engine was low and the three-way catalytic converter did not reach the working temperature, both emissions and fuel consumption were not ideal. In order to improve this, the exhaust manifold of EA2 1 1 engine is designed in the cylinder head, so that it can warm up quickly and improve fuel efficiency and emissions.
3. The water-cooled intercooler is integrated with the intake manifold.
Usage: it is compact while ensuring heat dissipation effect.
EA2 1 1 series turbocharged engines adopt a water-cooled intercooler with more complex structure but better heat dissipation effect, so that the temperature of fresh air entering the cylinder is lower, thus achieving the effect of improving combustion efficiency. At the same time, the intercooler and the intake manifold are also integrated, which reduces the pipelines outside the engine and makes the structure more compact.
4. Camshaft cover and valve cover are integrated.
Effect: The structure is simplified, and the modular assembly is easier to assemble.
In the past, the camshaft of most engines was located in the cylinder head with a valve cover on it. Because the exhaust manifold is integrated in the cylinder head of EA2 1 1, resulting in limited space and the demand for compactness, Volkswagen engineers simply move the camshaft into the valve head (the oil-gas separator is located on one side of the cylinder block alone), thus achieving the design goal of integration and modularization.
5. Water pump integrated thermostat
Purpose: To realize more direct circulation control and simplify cooling pipes.
EA2 1 1 The water pump and thermostat of the engine are simply integrated, which makes the structure of the refrigeration cycle simpler, the number of external pipelines is reduced, and the maintenance is simpler.
6. Technology that can be adopted in the future: ACT cylinder closing technology.
The domestic EA2 1 1 engine is expected to introduce ACT cylinder passivation technology in the future. The ultimate goal of active cylinder management is to save fuel. When the engine starts idling, the vehicle will only start two cylinders to work and become a two-cylinder engine. When the accelerator pedal is pressed, the other two cylinders will join the work. According to official data, cylinder passivation technology can save 0.4L fuel consumption per 100 kilometers and 8g carbon dioxide emissions per kilometer.