In-line hydraulic hybrid system for vehicle and method for operating in-line hydraulic hybrid system for vehicle

摘要

The present invention relates to a series hydraulic hybrid system (1) for a vehicle, a hydraulic circuit (2) including a first hydraulic displacement unit (6) in fluid communication with a second hydraulic displacement unit (7), and a hydraulic actuator (4). And a hydraulic pressure accumulator assembly (5), wherein the hydraulic pressure accumulator assembly (5) is selectively connected to the hydraulic circuit (2) by at least one controllable circuit valve (12a, 12b, 13a, 13b). The hydraulic pressure accumulator assembly (5) is in fluid communication with the hydraulic actuator (4) selectively by at least one controllable actuator valve (17a, 17b), thereby fluid pressure accumulator assembly. (5) at least one actuator valve (1) independent of the control position of at least one circuit valve (12a, 12b, 13a, 13b). a, by 17b) is selectively fluidly connected to the hydraulic actuator (4), selectively configured to be separated fluidically from the hydraulic actuator (4). The invention further relates to a method of operating the system (1).