First, the purpose is different. The infantry combat bai vehicle is directly used to take infantry to accompany the tank battle. It can not only ensure the mobility of the infantry in the vehicle, but also ensure the infantry combat in the vehicle. Its body is equipped with perforations, and the infantry can shoot from the inside of the vehicle to the outside of the vehicle. The owner of the armored personnel transport vehicle is used to ensure the maneuverability of the infantry in the vehicle. When the infantry is transported to the impact starting position, the infantry must get out of the vehicle and fight. The vehicle body is generally not equipped with perforation, and the infantry cannot shoot inside the vehicle.
Second, the vehicle-mounted weapons are different. Since infantry fighting vehicles have to directly accompany tanks to fight or carry infantry alone, they have a wide variety of on-board weapons and are more powerful. The US M2 Bradley infantry fighting vehicle is equipped with cannons, machine guns and anti-tank missiles. The firepower of the Soviet infantry fighting vehicle is even more terrifying. Taking the BMP4 infantry fighting vehicle as an example, it is equipped with a 100MM smoothbore gun, a 30MM machine gun, a 7.62MM machine gun, and an anti-tank missile. Armored personnel carriers have relatively weak firepower and are generally only equipped with large-caliber machine guns.
Third, the armor protection is different. Since infantry fighting vehicles have to directly face enemy fire, their armor protection is generally thicker, and most of them can resist direct attacks from small-caliber artillery. Some infantry fighting vehicles are even directly modified from the tank chassis, and their protection capabilities are basically equivalent. In the tank. The armored personnel carrier is thinner, and generally it can only prevent direct shots from rifle machine guns and shell fragments. Within a certain distance, large-caliber machine guns can penetrate it.
Fourth, the tonnage is different. Because infantry fighting vehicles are equipped with thicker armor protection and more weapon systems, their weight is much heavier than armored personnel carriers. With the same carrying capacity, infantry fighting vehicles are generally about 10 tons heavier than armored personnel carriers.
Fifth, the movement mechanism is different. Infantry fighting vehicles must have the ability to pass through all terrain due to the needs of the battlefield. Therefore, most of them are tracked vehicles. Since armored personnel carriers are mainly used to carry out personnel transportation tasks, they do not have as high traffic capacity requirements as infantry fighting vehicles, and pay more attention to the speed and economy of vehicles. Therefore, most of them are wheeled vehicles.