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公开(公告)号：EP3978774A1
公开(公告)日：2022-04-06
申请号：EP20199725.1
申请日：2020-10-02
申请人： Robert Bosch GmbH
IPC分类号： F16D48/06
摘要： The present invention relates to a method for controlling a coupling system (12) of a summation mechanical transmission which is configured to couple a first drive shaft (14) and a second drive shaft (16) during coupling, the coupling system (12) comprising an hydraulic coupling (26) with two releasable coupling sections (28, 30), wherein a first coupling section (28) is connected to the first drive shaft (14) and a second coupling section (30) is connected to the second drive shaft (16), the coupling system (12) further comprising an hydraulic cylinder (34) which is connected to one of the first and the second coupling sections (28, 30) and is configured to engage and to disengage said first coupling section (28) with said second coupling section (30) based on a pressure inside said hydraulic cylinder (34), wherein the pressure inside said hydraulic cylinder (34) can be regulated by means of a pressure regulating device (44),
wherein said pressure regulating device (44) comprises activating means (78), which are configured to regulate the pressure inside said hydraulic cylinder (34) based on a current (ic) provided to said activating means (78);
the method comprising the following steps:
a. Proving said activating means (78) with a current (iC) for a first time interval (t1) such that said first coupling section (28) and said second coupling section (30) are approached to each other but the kiss point has still not be reached;
b. After said first time interval (t 1 ) providing said activating means (78) for a modulation time interval (t 2 , t 3 ) with a current (i C ) such that the approaching of said first coupling section (28) and said second coupling section (3) is slowed down with respect to the approaching during said first time interval (t1), wherein during said modulation time interval (t 2 , t 3 ) the kiss point is reached;
wherein said modulation time interval (t 2 , t 3 ) is divided into a second time interval (t 2 ) and a third time interval (t 3 ), wherein both in said second time interval (t 2 ) and said third time interval (t 3 ) the current (i C ) provided to said activating means (78) is gradually increased or decreased with a predetermined slope, wherein the slope of the current (ic) during said second time interval (t 2 ) is different with respect to the slope of the current (ic) during said third time interval (t 3 ).-
公开(公告)号：EP3978775A1
公开(公告)日：2022-04-06
申请号：EP20199726.9
申请日：2020-10-02
申请人： Robert Bosch GmbH
IPC分类号： F16D48/06
摘要： The present invention relates to a method for calibrating a coupling system (12) of a summation mechanical transmission, which is configured to couple a first drive shaft (14) coupled to a first hydraulic motor (4) and a second drive shaft (16) coupled with a second hydraulic motor (8), the coupling system (12) comprising an hydraulic coupling (26) with two releasable coupling sections (28, 30), wherein a first coupling section (28) is connected to the first drive shaft (14) and a second coupling section (30) is connected to the second drive shaft (16), the coupling system (12) further comprising an hydraulic cylinder (34) which is connected to one of the first and the second coupling sections (28, 30) and is configured to engage and to disengage said first coupling section (28) with said second coupling section (30) based on a pressure inside said hydraulic cylinder (34), wherein the pressure inside said hydraulic cylinder (34) can be regulated by means of a pressure regulating device (44),
wherein said pressure regulating device (44) comprises activating means (78), which are configured to regulate the pressure inside said hydraulic cylinder (34) based on a current (i C ) provided to said activating means (78);
wherein the method comprises the following step:
estimating a function over the temperature for a current (i_kp) provided to said activating means (78), which is requested for reaching the kiss point.-
公开(公告)号：EP4425011A1
公开(公告)日：2024-09-04
申请号：EP23159856.6
申请日：2023-03-03
申请人： Robert Bosch GmbH
发明人： Brix, Norman , Herrmann, Ronny , Barrera Villalpando, Abraham , Klee, Hannes , Isfort, Ole , Werner, Franz , Mueller, Matthias , Mumcu, Peer , Ilk, Erich , Vogel, Dieter , Arcolia, Alessandro , Alberti, Andrea
CPC分类号： F16H47/02 , F16H61/421 , F16H61/16 , F16H2061/16120130101 , F16H59/44 , F16H59/48 , F16H61/702
摘要： The present invention relates a method for changing over transmission stages (46, 48) of a transmission arrangement (3) of a mobile working machine, the transmission arrangement (3) comprising:
a first hydraulic machine (8) coupled to a drive machine (2),
a second hydraulic machine (14) having an adjustable expulsion volume (VH), wherein the second hydraulic machine (14) is fluidically connected to the first hydraulic machine (8) via a first working line (10) of the transmission arrangement (3) and a second working line (12) of the transmission arrangement (3), wherein the second hydraulic machine (14) is coupled to a manual transmission (6) of the transmission arrangement (3) so that a torque can be transmitted, the manual transmission (6) having at least two transmission stages (46, 48),
the method being characterized in that it comprises the following steps:
a) requesting a changeover of an engaged transmission stage (46, 48) from a first transmission stage (46, 48) to a second transmission stage (46, 48);
b) identify a first time interval, wherein said first time interval is the time requested for shifting from said first transmission stage (46, 48) to said second transmission stage (46, 48);
c) estimating the velocity reached by said mobile working machine at the end of said shifting based on said first time interval identified during said step b);
d) enabling or disabling said changeover based on said estimated velocity.-
公开(公告)号：EP3922851A1
公开(公告)日：2021-12-15
申请号：EP21178286.7
申请日：2021-06-08
申请人： Robert Bosch GmbH
摘要： Offenbart sind eine hydrostatische Axialkolbenpumpe und ein Antriebsstrang damit und ein Verfahren zur Steuerung der Axialkolbenmaschine. Eine speziell für niedrige Drehzahlen der Axialkolbenmaschine optimierte Kennlinie und eine speziell für hohe Drehzahlen optimierte Kennlinie definieren jeweils Steuerdrücke für den Pumpenregler in Abhängigkeit der Drehzahl. Zumindest in einem mittleren Bereich der Drehzahl werden Zwischenwerte von den beiden definieren Steuerdrücken für den Pumpenregler ermittelt und verwendet.
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公开(公告)号：EP4428395A1
公开(公告)日：2024-09-11
申请号：EP24160757.1
申请日：2024-03-01
申请人： Robert Bosch GmbH
发明人： Mueller, Matthias , Barrera Villalpando, Abraham , Werner, Franz , Brix, Norman , Herrmann, Ronny , Isfort, Ole , Klee, Hannes , Ilk, Erich , Vogel, Dieter , Arcolia, Alessandro , Alberti, Andrea
IPC分类号： F16H47/02 , F16H61/4157 , F16H61/444
CPC分类号： F16H61/4157 , F16H61/444 , F16H47/02 , F16H2047/02520130101 , F16H59/44
摘要： Die vorliegende Erfindung betrifft ein Verfahren zur Ansteuerung eines hydrostatischen Fahrantriebes (1) einer mobilen Arbeitsmaschine, wobei der hydrostatische Fahrantrieb mit einer ersten Hydromaschine (4) mit verstellbarem Verdrängungsvolumen und mit einer zweiten Hydromaschine (6) und einer dritten Hydromaschine (8) mit jeweils verstellbaren Verdrängungsvolumen versehen ist, wobei die erste Hydromaschine mit einer Antriebsmaschine koppelbar oder gekoppelt ist, wobei die zweite Hydromaschine (6) mit mindestens einem anzutreibenden Rad oder einer anzutreibenden Kette oder Achse mittels einer Kupplung (38) drehverbindbar ist, wobei die dritte Hydromaschine (8) mit dem mindestens einen anzutreibenden Rad oder der anzutreibenden Kette oder Achse drehverbunden ist, wobei die Kupplung (38) unter Berücksichtigung einer Fahrgeschwindigkeit der mobilen Arbeitsmaschine, oder einer Größe, die von dieser abhängig ist, gesteuert wird, wobei das Verfahren folgende Schritte umfasst:
a. Erfassen eines Bremszustandes B oder eines Reversierzustandes R und dass die Kupplung offen ist;
b. Erfassen einer Bremsleistung des hydrostatischen Fahrantriebes (1);
c. Vergleichen der Bremsleistung mit einem Grenzwert;
d. Anfordern einer Schließung der Kupplung, falls die Bremsleistung größer als den Grenzwert ist.-
6.发明公开
公开(公告)号：EP3587795A1
公开(公告)日：2020-01-01
申请号：EP19182357.4
申请日：2019-06-25
申请人： Robert Bosch GmbH
IPC分类号： F03C1/26 , F04B49/00 , F16H61/4192
摘要： Offenbart ist ein hydrostatischer Fahrantrieb mit einer Hydropumpe zur Druckmittelversorgung eines Hydromotors des Fahrantriebes, wobei die Hydropumpe einen Stellzylinder mit wenigstens einem Zylinderraum und ein darüber verstellbares Hubvolumen hat und wenigstens ein elektrisch ansteuerbares Druckventil vorgesehen ist, über das der Zylinderraum mit einem verstellend wirksamen Stelldruck beaufschlagbar ist. Zudem hat der Fahrantrieb eine Einrichtung, über die ein Druck der Hydropumpe mittels Beeinflussung des Stelldrucks limitierbar ist.
Offenbart ist weiterhin ein Verfahren zur Steuerung des Fahrantriebes.-
公开(公告)号：EP4428401A1
公开(公告)日：2024-09-11
申请号：EP23161108.8
申请日：2023-03-10
申请人： Robert Bosch GmbH
IPC分类号： F16H61/431 , F16H61/444
CPC分类号： F16H61/444 , F16H61/431 , F16H61/421 , F16H59/38 , F16H59/40 , F16H59/44 , F16H47/02
摘要： The present invention relates to a method for controlling a hydrostatic travel drive (1) of a mobile working machine, wherein the hydrostatic travel drive is provided with a first hydraulic machine (4) with adjustable displacement volume and with a second hydraulic machine (6) and a third hydraulic machine (8), wherein the first hydraulic machine can be coupled or is coupled to a drive machine (20), wherein the pressure medium coming from the first hydraulic machine can be conveyed to the second and to the third hydraulic machine (6, 8), which are arranged parallel to each other, the second hydraulic machine (6) being rotatably connectable by means of a clutch (38) to at least one wheel or chain or axle to be driven, the third hydraulic machine (8) being rotatably connected to the at least one wheel or chain or axle, wherein the displacement volume of said first hydraulic machine (4) can be regulated based on a control pressure,
characterized in that the method comprises the following steps:
a. Receiving a driving demand for the mobile working machine;
b. Providing a request for the opening of the clutch so that the second hydraulic machine (6) will not be anymore rotationally connected to the at least one wheel or chain or axle;
c. Reducing the displacement volume of said first hydraulic machine (4) by reducing said control pressure to an unload level which is dependent on the driving demand;
d. Opening said clutch;
e. Increasing the displacement of said first hydraulic machine (4) by increasing said control pressure to a load level which is dependent on said driving demand.-
公开(公告)号：EP4428394A1
公开(公告)日：2024-09-11
申请号：EP24160754.8
申请日：2024-03-01
申请人： Robert Bosch GmbH
发明人： Mueller, Matthias , Barrera Villalpando, Abraham , Werner, Franz , Brix, Norman , Herrmann, Ronny , Isfort, Ole , Klee, Hannes , Ilk, Erich , Vogel, Dieter , Arcolia, Alessandro , Alberti, Andrea
IPC分类号： F16H47/02 , F16H61/444
CPC分类号： F16H47/02 , F16H2047/02520130101 , F16H61/4157 , F16H61/444 , B60Y2200/22220130101 , F16H59/44 , F16H59/48 , F16H59/46
摘要： Die vorliegende Erfindung betrifft ein Verfahren zur Ansteuerung eines hydrostatischen Fahrantriebes (1) einer mobilen Arbeitsmaschine, wobei der hydrostatische Fahrantrieb mit einer ersten Hydromaschine (4) mit verstellbarem Verdrängungsvolumen und mit einer zweiten Hydromaschine (6) und einer dritten Hydromaschine (8) mit jeweils verstellbaren Verdrängungsvolumen versehen ist, wobei die zweite Hydromaschine (6) mit dem mindestens einen anzutreibenden Rad oder der anzutreibenden Kette oder Achse mittels einer Kupplung (38) drehverbindbar ist, wobei die dritte Hydromaschine (8) mit dem mindestens einen anzutreibenden Rad oder der anzutreibenden Kette oder Achse drehverbunden ist, wobei die Kupplung in Abhängigkeit einer Fahrgeschwindigkeit der mobilen Arbeitsmaschine gesteuert wird, wobei das Verfahren folgende Schritte umfasst:
a. Erfassen eines Fahrbefehls, der einer Soll-Fahrgeschwindigkeit oder einer Größe, die von dieser abhängig ist, entspricht;
b. Berechnung eines Schwellenwertes der Fahrgeschwindigkeit der Arbeitsmaschine, bei dem eine Umschaltung der Kupplung (38) stattfinden soll;
c. Wobei für den Fall, dass der Fahrbefehl einem Absolutwert der Soll-Fahrgeschwindigkeit der Arbeitsmaschine entspricht, der kleiner als ein vorgegebener Wert ist, der im Schritt b. berechnete Schwellenwert weiterhin unter Berücksichtigung einer aktuellen Verzögerung der Arbeitsmaschine und einer Umschaltzeit angepasst wird.-
公开(公告)号：EP3978773A1
公开(公告)日：2022-04-06
申请号：EP20199724.4
申请日：2020-10-02
申请人： Robert Bosch GmbH
IPC分类号： F16D48/06
摘要： The present invention relates to a method for calibrating a coupling system (12) of a mechanical transmission which is configured to couple a first drive shaft (14) and a second drive shaft (16), the coupling system (12) comprising an hydraulic coupling (26) with two releasable coupling sections (28, 30), wherein a first coupling section (28) is connected to the first drive shaft (14) and a second coupling section (30) is connected to the second drive shaft (16), the coupling system (12) further comprising an hydraulic cylinder (34) which is connected to one of the first and the second coupling sections (28, 30) and is configured to engage and to disengage said first coupling section (28) with said second coupling section (30) based on a pressure inside said hydraulic cylinder (34), wherein the pressure inside said hydraulic cylinder (34) can be regulated by means of a pressure regulating device (44), the method being characterized by comprising the following steps:
a. Coupling and decoupling the first drive shaft (14) with the second drive shaft (16) for a predetermined number of times, wherein for each of said number of times the temperature of a pressure medium, which is the pressure medium introduced into said hydraulic cylinder (34) during the coupling or during the uncoupling process by means of said pressure regulating device (44), is substantially the same;
b. During the coupling process measuring a first time interval (t 1 ), which is the time requested for reaching a predetermined pressure value inside said hydraulic cylinder (34), wherein said predetermined pressure is a pressure at which a kiss point between said first coupling section (28) and said second coupling section (30) has still not have been reached;
c. Averaging the value of said first time interval (t 1 ) obtained in each coupling process;
wherein said steps a. to c. are repeated for at least two different temperatures (TL, T H ) of the pressure medium, which is introduced into said hydraulic cylinder (34) during the coupling or during the uncoupling process;
wherein based on the averaged values of said first time interval obtained for said at least two different temperatures an interpolating function is estimated by interpolating the values of said first time interval (t 1 ) obtained for said at least two temperatures (T L , T H ), wherein said interpolating function is a function representing said first time interval (t 1 ) over the temperature.
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