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BMW's Valvetronic System: Explained

What is Valvetronic?

Valvetronic is a patented variable valve lift system developed by BMW. It controls the lift of the intake valves, which in turn controls the amount of air that enters the engine. This allows for more precise control of the engine's performance, resulting in increased power, efficiency, and reduced emissions.

How does Valvetronic work?

The Valvetronic system uses an eccentric shaft to control the lift of the intake valves. The shaft is connected to the engine's camshaft, and as the camshaft rotates, it turns the eccentric shaft. This causes the intake valves to open and close, and the amount of lift is controlled by the angle of the eccentric shaft.

Benefits of Valvetronic

The Valvetronic system provides a number of benefits over traditional variable valve lift systems:

• Increased power: By controlling the lift of the intake valves, Valvetronic can optimize the airflow into the engine, resulting in increased power.
• Improved efficiency: Valvetronic also helps to improve the engine's fuel efficiency by reducing pumping losses. This is because the Valvetronic system can close the intake valves sooner, which reduces the amount of air that is pumped back out of the engine.
• Reduced emissions: Valvetronic also helps to reduce emissions by optimizing the combustion process. This is because the Valvetronic system can control the amount of air that enters the engine, which in turn controls the amount of fuel that is injected. This results in a more complete combustion process, which produces fewer emissions.

Conclusion

Valvetronic is a sophisticated variable valve lift system that provides a number of benefits over traditional systems. It increases power, improves efficiency, and reduces emissions.

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