汽缸数可变的发动机，是一种汽车在行 驶时可以自动改变汽缸数目的发动机，它在 日本已首次使用。据了解，它是日产汽车公 司研究成功的，用于小轿车“脉冲装置”上所 载的Ｅ型发动机上，在不需要过多燃料的减 速时，可以把燃料由向４个汽缸供给减少到 向２个汽缸供给。 汽缸数 The variable-cylinder engine, an engine that automatically changes the number of cylinders while the car is in motion, has been used for the first time in Japan. It is understood that it has been successfully researched by Nissan Motor Co., and is used on the E-type engine contained in the “pulse device” of a passenger car. When the deceleration without excessive fuel is required, the fuel can be reduced from 4 cylinders to Supply to two cylinders. Number of cylinders