Because of variety of tasks, the badness of working condition, unsbench low speed and incline of overspeed, construction vehicle usually use diesel engine with fullscale actiyator as power source.

• 由于工程车辆作业条件与作业工况复杂、多变，以及柴油机怠速不稳、易于超速的缺点，所以工程车辆一般采用全程调速柴油机作为动力源。