The invention discloses an electronic-controlled engine component which comprises an engine, a sensor (1) and a signal plate (3) which is fixed and mounted on an engine crank (2); the sensor (1) is arranged at one end of the engine away from a flywheel, and is used for detecting a phase of the signal plate (3). Therefore, the installing position of the sensor is transferred to one end of the engine away from the flywheel to keep away from the position of a flywheel shell, thereby avoiding the influence of the lubricant fog in the flywheel shell on the rotating speed sensor and improving the working environment of the rotating speed sensor, so that the service life of the rotating speed sensor is prolonged and the detecting accuracy of the sensor is improved. Furthermore, the invention discloses a bulldozer comprising the electronic-controlled engine component.