Honda CVCC Engine

The Honda CVCC engine was the first in the world to clear the exhaust emission regulation known as the Muskie Act in the United States, which was a severe regulation in the 70s said to be unachievable. In recognition of the achievement, the car equipped with this engine was selected as ‘the Best Engineered Car’ in the 20th century by the Society of Automotive Engineers (SAE). The CVCC engine is designed with the new Lean-Burn concept to achieve complete fuel combustion. The engine included auxiliary combustion chambers and valves for the chambers and was capable of reducing harmful substances contained in the exhaust gas without using a catalyst. In addition, the technology triggered the development of many exhaust gas reduction technologies. It is a very historically important engine that elevated Japan’s exhaust gas reduction technology to the leading position in the world.