Integrated fault isolation and prognosis system for electric drive system

J Zhang, S Ballal, L Hao, WG Zanardelli, B Cao… - US Patent …, 2021 - Google Patents
An electric drive system of a vehicle comprises a motor, a position sensor, an inverter,
sensors to sense current and voltage supplied to the motor, and a controller to control the …

Systems and method for performing prognosis of fuel delivery systems using solenoid current feedback

A Sarwar, C Sankavaram, X Lu, SB Mehdi - US Patent 10,378,501, 2019 - Google Patents
An engine fuel delivery system, prognosis system, and method of conducting a fuel pump
solenoid prognosis are provided. The engine fuel delivery system includes a fuel pump …

Systems and methods for detecting and isolating faults within a power inverter

J Zhang, NSG Santini - US Patent 11,860,239, 2024 - Google Patents
A diagnostic system for diagnosing faults in a power inverter including a power loss
estimating module configured to calculate a power loss of one or more components of the …

Systems and methods for detecting stator winding faults and degradation

J Zhang, S Ballal, L Hao, WG Zanardelli… - US Patent …, 2022 - Google Patents
A diagnostic system includes: a current command module configured to, based on a motor
torque request, a motor speed, a direct current (DC) bus voltage, generate a d-axis current …

Early fault detection and mitigation for electric motors

J Zhang, L Hao - US Patent 11,451,175, 2022 - Google Patents
A control system for an electric motor includes a power input calculating module configured
to calculate power input to the electric motor. A power output calculating module is …

Techniques for measuring fuel injector flow irregularity without removal from vehicle

L Faied - US Patent 10,808,639, 2020 - Google Patents
Diagnostic systems and methods for a fuel system of an engine of a vehicle utilize a fuel rail
pressure sensor, an engine speed sensor, an exhaust oxygen (O2) sensor, and a controller …

Method for identifying faulty components of a fuel injection system

R Hoffmann, PM Ruße, T Gargiso… - US Patent 10,920,710, 2021 - Google Patents
(57) ABSTRACT A method for identifying faulty components of a fuel injection system is
disclosed, wherein a secondary injection is performed individually by each injector during a …