Patent ID: 6457351
Filing Date: 2002-10-01
Classification: B60K,G01M

Abstract:
A testing method of testing a hybrid electric vehicle which runs under integrated control of an engine, an electric motor and an auxiliary motor for run and which includes drive and control systems therefore the testing method comprising the steps of:having the hybrid electric vehicle running on a stationary running tester; acquiring: first data on the running vehicle by access to sensors in the vehicle, the first data including an accelerator input, an auxiliary clutch operation timing, an rpm of the auxiliary motor, an rpm of the engine, an electronically controlled throttle opening, and output power of the electric motor; and second data on the running vehicle by measurements thereto at the stationary running tester, the second data including a running speed and generated drive torque; analyzing the first and second data to detect a problem with the drive and control systems; and determining a drive control status of the auxiliary motor and a drive distribution ratio between the engine and the electric motor, based on the analysis of the first and second data.