目前市场上的多缸内燃机以V型结构居多,尤其是V型6缸柴油机,它具有结构紧凑、强度高、耐用性好以及较好的燃油经济性等特点,被广泛应用于军用装甲车和民用重载运输车等。本文针对某常用90°V6柴油机为研究对象,通过曲轴错拐的方法对柴油机内部激励载荷进行优化设计,以减小内燃机的往复惯性力矩和倾覆力矩,从而减小内燃机的振动与噪声。 Multi-cylinder internal combustion engines currently on the market are mostly V-shaped structures, especially the V-type 6-cylinder diesel engine, which has the characteristics of compact structure, high strength, good durability and good fuel economy and is widely used in military armored vehicles and civil Heavy-duty truck. In this paper, a common 90 ° V6 diesel engine is taken as the research object, the internal excitation load of the diesel engine is optimized by crankshaft miscrosing to reduce the reciprocating moment and overturning moment of the internal combustion engine, so as to reduce the vibration and noise of the internal combustion engine.