Is Volvo's 48V Mild Hybrid BSG or ISG?
2 Answers
Volvo's 48V mild hybrid system uses both BSG and ISG motors depending on the model. For example, the Volvo S90 adopts an improved version of the ISG motor, while the S60 utilizes a BSG motor. Below is relevant information about automotive motors: Definition: A motor generally refers to any machine capable of converting mechanical energy into electrical energy or vice versa. Specifically, it includes generators, dynamos, and electric motors. Classification: Motors can be categorized by power source into DC motors and AC motors; by structure and working principle into DC motors, asynchronous motors, and synchronous motors.
Volvo's 48V mild hybrid system uses ISG, not BSG. ISG stands for Integrated Starter Generator, which is directly installed between the engine and transmission, connected to the crankshaft, making the vehicle start quietly and smoothly with minimal noise or vibration. I've driven similar cars before, and the ISG provides seamless engine shutdown and restart at traffic lights while maintaining normal air conditioning cooling. This system also recovers braking energy to charge the battery, assists in vehicle acceleration, saves fuel, and improves overall efficiency. Additionally, unlike BSG, which relies on a belt drive that can wear out and cause issues over time, Volvo's ISG design is more durable. In practical use, the fuel-saving effect is noticeable, especially in stop-and-go city driving, with a reduction in combined fuel consumption of around 10%. Overall, ISG is the standard configuration for Volvo's mild hybrid models, currently used in both B5 and B6 variants.
