What does BIW mean?

1 Answers
AuroraLee
07/30/25 1:19am
BIW, the abbreviation for Body in White, refers to the sheet metal welded body that has undergone phosphating, rust removal, and primer coating but has not been painted with the topcoat and has no components installed. It is typically gray in color. A car is generally composed of four parts: the engine, chassis, body, and electrical system. Below is a brief introduction to these components: Automobile Engine: The automobile engine consists of the crankshaft and connecting rod mechanism, valve train, fuel supply system, ignition system, lubrication system, cooling system, and starting system. For example, an internal combustion engine usually converts chemical energy into mechanical energy. The engine can refer to both the power generation device and the entire machine including the power unit. Automobile Chassis: The automobile chassis is composed of four parts: the transmission system, running gear, steering system, and braking system. The function of the chassis is to support and install the automobile engine and its various components and assemblies, forming the overall shape of the car. It also receives power from the engine to enable the car to move and ensure normal operation.
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