Garrett Transportation I Inc.

Du You

Yunbin Gong

Longfei Chen

Haibin Wang

Gaofeng Liu

Yuguo Liu

Guihua Chen

Xiaowei Du

Turbocharger systems and related methods and devices are provided for determining rotational speed of a turbocharger. A speed sensing device is mounted to a turbocharger and includes an acceleration sensing arrangement and an acoustic sensing arrangement. The speed sensing device outputs an acceleration-based speed value as the current turbo speed when the acceleration-based speed is stable, and otherwise outputs an acoustic-based speed value to as the current turbo speed if the acoustic-based speed value stable or outputs an estimated value as the current turbo speed when both of the acceleration-based and acoustic-based speeds are unstable. In exemplary embodiments, the acceleration sensing arrangement and the acoustic sensing arrangement are provided on a common substrate.

System and methods for adaptively determining turbocharger speed

Growing community of inventors

Shanghai, China

Du You