Patent ID: 9745972
Date: 2017-08-29
CPC Classifications: B60K,B60W,B66F,E02F,F02N,F04B,F15B,Y02T

Claim:
1. A drive train of a vehicle, comprising: an internal combustion engine; working hydraulics driven by the internal combustion engine, wherein the working hydraulics include at least one hydraulic pump driven by the internal combustion engine, wherein the hydraulic pump is operable as a pump and as a motor, wherein the hydraulic pump, when operated as a pump, sucks hydraulic fluid from a tank on a suction side and delivers into a delivery line that leads to the working hydraulics, and wherein the hydraulic pump, when operated as a motor, is supplied with hydraulic fluid from a hydraulic accumulator on the suction side; a charge pump driven by the internal combustion engine to supply a charging circuit including at least one consumer, wherein the charge pump is operable as a pump and as a motor, wherein the charge pump, when operated as a pump, sucks hydraulic fluid out of the tank on a suction side and delivers into a charge pressure line that leads to the charging circuit, and wherein the charge pump, when operated as a motor, is supplied with hydraulic fluid from the hydraulic accumulator on the suction side, a first electrically actuated control valve to control a connection of the hydraulic accumulator with the suction side of the hydraulic pump, and a second electrically actuated control valve to control a connection of the hydraulic accumulator with the suction side of the charge pump.