초록 ▼

A hybrid vehicle maintains its travel even if the motor driving system used therein suddenly encounters some problem in operation. The hybrid vehicle has an internal combustion engine and an electric motor with its output connected to an output axle. A clutch is provided to selectively connect the i

A hybrid vehicle maintains its travel even if the motor driving system used therein suddenly encounters some problem in operation. The hybrid vehicle has an internal combustion engine and an electric motor with its output connected to an output axle. A clutch is provided to selectively connect the internal combustion engine to the output axle and a hydraulic power transmission is provided between the clutch and the internal combustion engine. A drive power share computer apportions the needed drive power between the engine and the motor. A detector is provided for detecting a malfunction of the motor. A first controller serves to release the clutch when the vehicle is running in a motor drive mode and a second controller effects engagement of the clutch and driving with the engine, even when the vehicle is a motor drive mode, when the detector detects a malfunction of the motor.

대표청구항 ▼

A hybrid vehicle comprising: speed detection means for detecting vehicle speed; accelerator detection means for detecting degree of accelerator pedal depression; an internal combustion engine; a motor drive assembly including an electric motor, a motor controller, a battery and a power source circui

A hybrid vehicle comprising: speed detection means for detecting vehicle speed; accelerator detection means for detecting degree of accelerator pedal depression; an internal combustion engine; a motor drive assembly including an electric motor, a motor controller, a battery and a power source circuit for sending electric current from said battery to the motor, the electric motor having its output connected to an output shaft; clutch means which is engagable for selectively connecting the internal combustion engine to the output shaft; a hydraulic power transmission provided between said clutch means and the internal combustion engine; malfunction detecting means for detecting a malfunction in any one of said electric motor, said motor controller and said power source circuit, said malfunction detecting means monitoring a vehicle operation parameter relating to operation of said electric motor, said motor controller, or said power source circuit, a malfunction being detected when the monitored parameter crosses a predetermined value; drive power share computing means for apportioning drive power for the vehicle between the engine and the motor to establish one of the following three normal drive modes: (1) an engine drive mode wherein the vehicle is driven by the engine alone, responsive to detection of a vehicle speed exceeding a set value for speed, (2) a motor drive mode wherein the vehicle is driven by the motor alone, responsive to detection of a vehicle speed below the set value for speed and of a degree of accelerator depression below a set value for degree of accelerator depression and (3) a hybrid drive mode wherein the vehicle is driven by the engine and the motor in combination, responsive to detection of a vehicle speed below the set value for speed and of a degree of accelerator depression above the set value for degree of accelerator depression and for changing said set values responsive to changes in a detected vehicle operation parameter; first control means for disengaging said clutch means when the vehicle is driven by the motor alone; and second control means for engaging said clutch means and for establishing a malfunction drive mode wherein the vehicle is driven by the engine alone, regardless of the detected vehicle speed and detected degree of accelerator depression, responsive to a detection of a malfunction by said malfunction detecting means.