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Control method for an internal combustion engine of a hydraulic hybrid drive and electronic control device for an internal combustion engine
A hydraulic hybrid drive comprises a combustion engine 3 which drives, via shaft 6, hydraulic pumps 1, 2 that supply hydraulic fluid to hydraulic consumers 4. A speed regulator 22 controls the engine 3 so as to reduce fuel supply when recuperated hydraulic power is generated. The recuperated hydraulic power is produced when, for example, a boom of an excavator is lowered thereby forcing hydraulic fluid from hydraulic consumers 4, via connector line 12, to recuperation motor PRB. The recuperation motor PRB outputs a recuperation torque to the shaft 6 which is converted to recuperation power by multiplying the torque by a speed of the shaft 6. An electronic recuperation control device 18 controls the speed regulator 22 which reduces fuel supply so soon as the recuperated power is detected at the recuperation motor PRB and before overspeed occurs at the engine 3. Reference is also made to an electronic device and to a hydraulic hybrid drive.
Control method for an internal combustion engine of a hydraulic hybrid drive and electronic control device for an internal combustion engine
A hydraulic hybrid drive comprises a combustion engine 3 which drives, via shaft 6, hydraulic pumps 1, 2 that supply hydraulic fluid to hydraulic consumers 4. A speed regulator 22 controls the engine 3 so as to reduce fuel supply when recuperated hydraulic power is generated. The recuperated hydraulic power is produced when, for example, a boom of an excavator is lowered thereby forcing hydraulic fluid from hydraulic consumers 4, via connector line 12, to recuperation motor PRB. The recuperation motor PRB outputs a recuperation torque to the shaft 6 which is converted to recuperation power by multiplying the torque by a speed of the shaft 6. An electronic recuperation control device 18 controls the speed regulator 22 which reduces fuel supply so soon as the recuperated power is detected at the recuperation motor PRB and before overspeed occurs at the engine 3. Reference is also made to an electronic device and to a hydraulic hybrid drive.
Control method for an internal combustion engine of a hydraulic hybrid drive and electronic control device for an internal combustion engine
MARTIN STANGL (author)
2017-10-25
Patent
Electronic Resource
English
IPC:
B60W
CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION
,
Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion
/
E02F
Baggern
,
DREDGING
/
F02D
CONTROLLING COMBUSTION ENGINES
,
Steuern oder Regeln von Brennkraftmaschinen
/
F15B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
,
Druckmittelbetriebene Systeme allgemein
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