The subframe can connect the body and the suspension, and the subframe can improve the rigidity of the body. The front subframe also supports the engine and gearbox. The subframe is very important for a monocoque design car.
A car with a non-load-bearing body design does not have a subframe.
The subframe is between the front and rear suspensions of the car.
If you want to see the subframe, you need to lift the whole car with a lifter so that you can see the subframe.
Some cars will use steel for the subframe, and some cars will use aluminum alloy for the subframe.
Using an aluminum alloy for the subframe reduces overall vehicle mass, thereby improving vehicle handling and fuel economy.
However, the cost of manufacturing the subframe with aluminum alloy is relatively high, so only high-end models of luxury brands will use aluminum alloy to make the subframe.
The subframe also has an impact on handling and comfort.
Since the subframe needs to be accepted during the driving process, the structure and design of the subframe can affect the handling and comfort of the car.
There are many sub-frame structures, the most common are full-frame sub-frames and ingot-type sub-frames, and ingot-type sub-frames are also called ingot beams by many people.
The full-frame subframe can absorb part of the impact force of the car in a frontal collision.