理想产品负责人回应：理想ONE为什么没用1.5T四缸增程器

Group 1 - The core issue addressed is the choice of a 1.2T three-cylinder range extender for the Li ONE, which was made due to the company's early stage and lack of self-developed engine capabilities in 2017 [2] - The market at that time did not recognize the range extender concept, and there were no available options for a 1.5T four-cylinder range extender [2] - The three-cylinder engine presented challenges in terms of noise, as its inherent physical characteristics led to uneven firing intervals, resulting in a less smooth sound [2] Group 2 - The company has developed a new third-generation 1.5T four-cylinder range extender for the Li L9 Livis, achieving breakthroughs in ultra-low fuel consumption and ultra-quiet operation [3]