What is the principle of Honda CVCC engine?

[VonLondyn]

Honda CVCC engine principle can meet US emission standards without a catalytic converter. CVCC Low-pollution Engine: In 1972, Honda launched the CVCC low-pollution engine. It broke the prophecy that the Muskie Act could not be passed within ten years and reached new heights. After repeated experiments, Honda innovatively divided the engine combustion chamber into a main combustion chamber and a sub-combustion chamber. A small amount of rich mixed gas is first ignited in the sub-combustion chamber, and then the lean mixed gas in the main combustion chamber is burned together. The CVCC (Compound Vortex Controlled Combustion) engine, known as the "low-pollution commercialized" engine, was thus born. Passing the Muskie Act: In 1972, the CVCC engine passed the US Muskie Act, which was considered impossible to pass at that time.