Patent attributes
A hydraulic circuit of a hybrid type industrial vehicle drivable by an engine and an electric motor is disclosed. A generator motor is driven by the engine and generates electricity. A cargo handling hydraulic pump is actuated in conjunction with an operation of the generator motor and supplies hydraulic oil to a cargo handling circuit. Electricity generated by the generator motor is stored in a battery and drives a steering electric motor. A steering hydraulic pump is actuated in conjunction with an operation of the steering electric motor and supplies hydraulic oil to a steering circuit. A bypass passage connects the cargo handling circuit and the steering circuit to each other, and supplies the hydraulic oil of the cargo handling circuit to the steering circuit. A switching valve is located in the bypass passage.
