Shared Technologies : Engineering: Valvetrain

Four Valves Per Cylinder (Accord, Civic, CR-V, Fit, HR-V, Odyssey, Pilot and Ridgeline)



What’s the Benefit?

Four-valve cylinder heads can help enhance power production for better response to the throttle.

The Feature:

Generally, the more valves a combustion chamber has, the more power it can produce. 

  • More valves improve an engine’s breathing by letting more air and fuel into the combustion chamber and expelling exhaust gases more efficiently. 
  • Each valve is smaller and lighter in a multi-valve engine, so higher engine speeds are easier to achieve than with the larger, heavier valves found in 2-valve designs.