The current 2020 BMW 1 Series was launched on the UKL platform. The layout has been changed to front-wheel drive. The front suspension is a MacPherson independent suspension and the rear suspension is a link-type independent suspension. Suspension, minimum ground clearance is 140mm.
Safe Driving Experience
The BMW 5 Series, which has always focused on rear-wheel drive, now also puts front-wheel drive on the 1 Series. Whether the safe driving experience will decline is a question many people have. Things to pay attention to. After driving, the front-wheel drive of the BMW 1 Series actually does not feel any significant difference from the previous rear-wheel drive. The steering precision and direction guidance are both very good.
Front suspension
The domestic BMW 1 Series uses a very standard MacPherson front suspension. The horns are made of aluminum alloy, and the lower swing arm is made of a two-layer stamping die. Thick steel plate has no big problem in terms of hardness. In comparison, the imported 1 Series uses an aluminum alloy double-ball suspension, which has stronger rideability. Of course, there is nothing wrong with domestic efforts to save costs.
Subframe
The subframe of the 1 series is a half-strip structure, which is commonly known as Yuanbao beam. The material is a multi-layer stamped die thick steel plate. However, a piece of aluminum alloy is connected with screws on both sides of the subframe. This piece of aluminum alloy extends to the front water tank structure, so this is actually a full-strip subframe.
The full-strip subframe can increase the strength of the front of the car, and can disperse the impact force to the chassis in the event of an impact, ensuring the consistency of the passenger compartment. In order to reduce the weight, the front frame uses aluminum alloy materials.
Rear Suspension
The rear suspension of the BMW 1 Series uses a link-type rear suspension. The structure is not very complicated, and the raw materials are steel rather than aluminum alloy. The link-type suspension can ensure safe comfort and at the same time improve the car's handling.
Overall chassis
Overview of the entire chassis of the BMW 1 Series, there is a large-scale rain shield covering the engine. The rain shield under the engine is a thick steel plate, which can play a faster role. Guaranteed efficacy. The rain shield of the car chassis is made of relatively soft fiberglass, and there is also a layer of sound-absorbing cotton on the inside of the rain shield, so the NVH level of the BMW 1 Series will be better. All exhaust pipes are covered with detailed heat-insulating tiles, which can effectively prevent heat from being transmitted into the car compartment.
BMW 1 Series anti-collision beam
The front anti-collision beam is made of aluminum alloy, and it comes with passerby protection foam. The energy-absorbing box is also made of aluminum alloy, but it does not have There are holes and wrinkles; the rear anti-collision beam is a single-sided stamped steel plate. Although it is a detachable structure, it does not have an energy-absorbing box.
Front anti-collision beam
The front anti-collision beam of the BMW 1 Series is 4.45mm thick, and both sides are extended to the bottom of the headlights, covering 80% of the area. It can meet the active impact test from various viewing angles. However, there are energy-absorbing structures on both sides of the anti-collision beam. It should be prepared to use the yield strength of the aluminum alloy to replace the energy absorption.
There is a thin aluminum alloy beam under the anti-collision beam, which is used to prevent passers-by from being rolled into the chassis. With so many aluminum alloy materials, it can be seen that the BMW 1 Series has done a lot of fat reduction on these front components after changing to front-wheel drive.
Rear anti-collision beam
The rear anti-collision beam of the BMW 1 Series is much simpler than the front anti-collision beam. It is a hot-formed thick steel plate, and the thickness of the thick steel plate is Only 1.08mm. There are no crash boxes on both sides, which is a bit shoddy.
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