CVCC

This article is about the engine trademark. For the consonant-vowel-consonant-consonant syllable pattern, see Syllable.
A Honda Civic engine with CVCC

CVCC, or Compound Vortex Controlled Combustion (Japanese: 複合渦流調整燃焼方式, Hepburn: Fukugō Uzuryū Chōsei Nenshō Hōshiki), is an internal combustion engine technology developed and trademarked by the Honda Motor Company.[1]

The technology's name refers to its primary features: Compound refers to the use of two combustion chambers; Vortex refers to the vortex generated in the main combustion chamber, increasing combustion speed, and Controlled Combustion refers to combustion occurring in a timely, controlled manner.[1]

The engine innovatively used a secondary, smaller auxiliary inlet valve to feed a richer air-fuel mixture to the combustion chamber around the spark plug, while the standard inlet valve fed a leaner air-fuel mixture to the remainder of the chamber, creating a more efficient and complete combustion.[2]

  1. ^ a b "Honda Global | Introducing the CVCC / 1972". global.honda. Retrieved 2020-12-15.
  2. ^ Roeser, Justin (2022). "Milestones: The Journey of Honda in America". Avants. 3 (December 2022): 29. Retrieved 4 December 2022.