What Is 4 Valve Technology And How Does It Work?

4 Valve technology

What is 4 Valve Technology In Engines?

4 Valve Technology incorporates Two Inlet & Two Exhaust Valves in the engine.

For – Increased air-fuel intake, Efficient combustion, More power.

4 Valve Technology
4 Valve Technology

How Does This Technology work?

This technology incorporates Four Valves, two each of the inlet and exhaust valves in the engine. Thus, it is different and better than one valve for each inlet & exhaust valve used in the conventional engine design. This engine uses its valves just like the human nose. So, two inlet valves mean more opening of the area to suck the air-fuel mixture.

The two inlet valves increase the area of the air intake. It allows the more air-fuel mixture to get into the cylinder. Thus, it increases the amount of air than the conventional design. The newer generation engines with this technology are now commonly used in both cars & bikes alike.

Furthermore, Yamaha’s 4-Valve design features a single spark plug positioned at the center of the combustion chamber. Thus, it better spreads the flame and enables highly efficient combustion. It also gives steadier engine performance at low speeds. Besides, it also provides a better acceleration feeling according to Yamaha.

4 Valve Engine (Image Courtesy: Yamaha India)
4 Valve Engine (Image Courtesy: Yamaha India)

According to Bajaj Auto, the cylinder-head with 4-Valve technology increases the combustion area covered by the valves. As a result, it can be up to more than 50% compared to a 2-valve design. Thus, it improves the engine’s performance, such as its power, throttle response, and pick-up at all engine speeds. Therefore, it also results in better fuel efficiency and helps in lowering emissions.

Following Bikes with 4 Valve Technology Aare Available In India:

  1. Yamaha YZF 15
  2. Yamaha FZ 16
  3. Bajaj Discover
  4. Bajaj Pulsar

Watch The Bajaj 4 Valve Engine In Action Here:

For further information on the one used in Yamaha, please click here, and in Bajaj, please click here.

Read more: How The Valve Timing Affects The Engine Performance?>>

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