Abstract:
A modular electrically variable transmission includes a sun-shared module (60) and a sun and ring-shared module (70) assembled to form a two-module electrically variable transmission (10) having a shiftable motor speed reducer subassembly (50) and an electrically variable transmission subassembly (40). The sun-shared module (60) includes a first motor-generator (54), an input (80), and primary and secondary planetary gear sets each having respective primary and secondary ring gears (96, 110), carriers (88, 102) and associated pinion gears (92, 106). The pinion gears (92, 106) are in meshing engagement with a single first shared sun gear (84) non-rotatably coupled to the first motor-generator (54). The sun and ring-shared module (70) includes a second motor-generator (44), input (174), shared sun gear (120) and shared ring gear (124), and primary and second secondary planetary gear sets. The secondary planetary gear set includes a secondary carrier (142) supporting outer and inner pinion gears. The second shared sun gear (120) is non-rotatably coupled to the second motor-generator (44).
Abstract:
Die Erfindung betrifft eine Hybridantriebsanordnung eines Kraftfahrzeuges, umfassend ein Hauptgetriebe mit einer Getriebeeingangswelle und einem Getriebegehäuse, eine als Motor und Generator betreibbare, einen Stator (25a) und einen Rotor (25b) aufweisende elektrische Maschine (25), welche eingangsseitig zum Hauptgetriebe angeordnet ist, und ein Planetengetriebe, welches zwischen dem Rotor (25b) und der Getriebeeingangswelle angeordnet ist, wobei die Getriebeeingangswelle eine zentrale Ölbohrung und Querbohrungen für die Ölversorgung des Planetengetriebe und der elektrischen Maschine (25) aufweist, wobei das Planetengetriebe und die elektrische Maschine (25) in einem Hybridgehäuse (20) angeordnet sind und wobei das Hybridgehäuse (20) über ein Ölrücklaufrohr (42) mit dem Getriebegehäuse des Hauptgetriebes verbunden ist. Es wird vorgeschlagen, dass der dem Ölrücklaufrohr (42) zugeführte Ölstrom über eine Trennwand (54) in Wärme übertragender Verbindung mit dem Kühlmittel steht, welches einen radial außerhalb des Stators (25a) angeordneten Kühlkanal (50) durchströmt.
Abstract:
A control system for a hybrid vehicle configured to promptly shift a drive mode is provided. In the single-motor mode, the vehicle is powered by a second motor (10) while bringing an engagement device (K0) into disengagement and stopping the engine (1). In the dual-motor mode, the vehicle is powered by both a first motor (5) and the second motor (10) while bringing the engagement device (K0) into engagement and stopping a rotation of the output shaft (2) of the engine (1) by a stopper device (BK). When shifting the drive mode from the single-motor mode to the dual-motor mode, the control system controls the first motor (5) in a manner such that a speed difference between an input speed and an output speed of the engagement device (K0) is reduced (step S3) while increasing a torque transmitting capacity of the engagement device (step S5).
Abstract:
Provided is a motor drive control device capable of reducing gear rattling noise generated in a speed reducer without increasing size of the speed reducer and the number of components. A motor ECU controls a motor to generate a reverse set torque (Tn) when a target torque (T*) is reversed (at a time t1). The motor ECU sequentially calculates a backlash (B) in a counter gear mechanism, and sets a time period (D1 ) in which the reverse set torque (Tn) is generated by the motor and a time period (D2) in which a return set torque (Tp) is generated by the motor so that the backlash (B) at a current time becomes equal to a time integrated value (corresponding to an area A) of an estimated relative velocity (V2-V1) until a time of re-abutment. In this manner, at timing at which a circumferential velocity of a tooth of a first gear and a circumferential velocity of a tooth of a second gear in the counter gear mechanism become equal to each other, the teeth can be brought into abutment against each other.
Abstract:
The invention relates to a method to start a combustion engine (4) in a hybrid powertrain (3), comprising a gearbox (2) with an input shaft (8) and an output shaft (20); a first planetary gear (10), connected to the input shaft (8) and a first main shaft (34); a second planetary gear (12), connected to the first planetary gear (10) and a second main shaft (36); a first electrical machine (14), connected to the first planetary gear (10); a second electrical machine (16), connected to the second planetary gear (12); at least one gear pair (Gl, 60, 72), connected with the first main shaft (34), and therefore with the first planetary gear (10) and the output shaft (20); and at least one gear pair (G2, 66, 78), connected with the second main shaft (36), and therefore with the second planetary gear (12) and the output shaft (20), wherein the input shaft (8) is connected with a first planetary wheel carrier (50), arranged in the first planetary gear (10), and wherein the second main shaft (36) is connected with a planetary wheel carrier (51), arranged in the second planetary gear (12). The method comprises the steps of: a) connecting an output shaft (97) of the combustion engine (4) with the input shaft (8) of the gearbox (2), via a coupling device (106), arranged between the output shaft (97) and the input shaft (8); and b) controlling the first and the second electrical machine (14, 16) in such a way that the combustion engine (4) is started. The invention also relates to a computer program (P) to start a combustion engine (4) and a computer program product comprising program code for an electronic control device (48) or another computer (53) to implement the method according to the invention.
Abstract:
Method for moving off of a vehicle with a hybrid powertrain (3), comprising a combustion engine (4); a gearbox (2) with an input shaft (8) and an output shaft (20); a first planetary gear (10), which is connected to the input shaft (8) and a first main shaft (34); a second planetary gear (12), which is connected to the first planetary gear (10) and a second main shaft (36); a first electrical machine (14), which is connected to the first planetary gear (10); a second electrical machine (16), which is connected to the second planetary gear (12), wherein the electrical machines (14, 16) may operate each other; at least one gear pair (G1, 60, 72), connected with the first planetary gear (10) and the output shaft (20); and at least one gear pair (G2, 66, 78), connected with the second planetary gear (12) and the output shaft (20), wherein the combustion engine, via the input shaft (8), is connected with a first planetary wheel carrier (50), arranged in the first planetary gear (10), wherein the second main shaft (36) is connected with a second planetary wheel carrier (51), arranged in the second planetary gear (12). The method comprises the steps of, while the combustion engine (4) is in operation: a) ensuring that the rotatable components (26, 50) of the first planetary gear (10) are disconnected from each other, and ensuring that the rotatable components (32, 51) of the second planetary gear (12) are disconnected from each other, b) ensuring that at least one gear is engaged, corresponding to the at least one gear pair (G1, 60, 72), which is connected with the first planetary gear (10), and/or the least one gear pair (G2, 66, 78), which is connected with the second planetary gear (12), and c) activating the first electrical machine (14) and the second electrical machine (16), so that the total power output from the first and second electrical machines (14, 16) is zero, and so that a torque is generated in the output shaft (20). The invention also relates to a vehicle (1), which is moved off according to the method according to the invention. The invention also relates to a computer program (P) to move off a vehicle with a hybrid powertrain (3), and a computer program product comprising program code for an electronic control device (48) or another computer (53) to implement the method according to the invention.
Abstract:
The present invention relates to a method to control a hybrid powertrain (3), to achieve a desired favourable engine speed in a combustion engine (4), arranged in the hybrid powertrain (3), wherein the hybrid powertrain (3) also comprises a gearbox (2) with an input shaft (8) and an output shaft (20); a first planetary gear (10), connected to the input shaft (8) and a first main shaft (34); a second planetary gear (12), connected to the first planetary gear (10) and a second main shaft (36); a first electrical machine (14), connected to the first planetary gear (10); a second electrical machine (16), connected to the second planetary gear (12); at least one gear pair (Gl, 60, 72), connected with the first main shaft (34), and therefore with the first planetary gear (10) and the output shaft (20); and at least one gear pair (G2, 66, 78), connected with the second main shaft (36), and therefore with the second planetary gear (12) and the output shaft (20), wherein the combustion engine (4) is connected with the input shaft (8) of the gearbox (2). The method comprises the steps: a) ensuring that two rotatable components (22, 26, 50) in the first planetary gear (10) are connected with each other; b) ensuring that all rotatable components (28, 32, 51) in the second planetary gear (12) are disconnected from each other; c) ensuring that a gear is engaged, which corresponds to the at least one gear pair (G2, 66, 78), which is connected with the second planetary gear (12), d) ensuring that the at least one gear pair (Gl, 60, 72), which is connected with the first planetary gear (10), is disconnected; e) controlling the second electrical machine (16), in such a way that a desired torque (TDrv) is achieved in the output shaft (20); f) controlling the combustion engine (4) to a desired engine speed (nice); and g) controlling the first electrical machine (14), in such a way that a desired total power consumption (PEM) for the first and the second electrical machines (14; 16) is achieved. The invention also relates to a computer program (P) to control a hybrid powertrain (3) and a computer program product comprising program code for an electronic control device (48) or another computer (53) to implement the method according to the invention.
Abstract:
The present invention relates to a method to control a hybrid powertrain (3) to optimise the torque from a combustion engine 4 arranged in the hybrid driveline 3, wherein the hybrid powertrain (3) also comprises a gearbox (2) with an input shaft (8) and an output shaft (20); a first planetary gear (10), connected to the input shaft (8) and a first main shaft (34); a second planetary gear (12), connected to the first planetary gear (10) and a second main shaft (36); a first electrical machine (14), connected to the first planetary gear (10); a second electrical machine (16), connected to the second planetary gear (12); at least one gear pair (G1, 60, 72) connected with the first planetary gear (10) and the output shaft (20); and at least one gear pair (G2, 66, 78) connected with the second planetary gear (12) and the output shaft (20), wherein the combustion engine (4) is connected with a first planetary wheel carrier (50), arranged in the first planetary gear (10) via the input shaft (8) of the gearbox (2), and wherein the second main shaft (36) is connected with a planetary wheel carrier (51), arranged in the second planetary gear (12). The method comprises the steps: a) to disconnect a first planetary wheel carrier (50), arranged in the first planetary gear (10), and a first sun wheel (26) from each other, or to disconnect a second planetary wheel carrier (51), arranged in the second planetary gear (12), and a second sun wheel (32) from each other; b) to control the combustion engine (4) to a predetermined engine speed (nice); and c) to control the first and the second electrical machines (14; 16) in such a way that a desired torque (TDrv) is achieved in the output shaft (20), while simultaneously a requested total power consumption (PEM) of the first and the second electrical machines (14; 16), is achieved. The invention also relates to a computer program (P) to control a hybrid powertrain (3) and a computer program product comprising program code for an electronic control device (48) or another computer (53) to implement the method according to the invention.
Abstract:
The present invention relates to a method to start a hybrid powertrain (3) to optimise fuel consumption, wherein such hybrid powertrain (3) comprises a combustion engine (4); a gearbox (2) with an input shaft (8) and an output shaft (20); a first planetary gear (10), connected to the input shaft (8) and a first main shaft (34); a second planetary gear (12), connected to the first planetary gear (10) and a second main shaft (36); a first electrical machine (14), connected to the first planetary gear (10); a second electrical machine (16), connected to the second planetary gear (12); at least one gear pair (Gl, 60, 72) connected with the first main shaft (34), and therefore with the first planetary gear (10) and the output shaft (20); and at least one gear pair (G2, 66, 78) connected with the second main shaft (36), and therefore with the second planetary gear (12) and the output shaft (20), wherein the combustion engine (4) is connected with a first planetary wheel carrier (50), arranged in the first planetary gear (10) via the input shaft (8) of the gearbox (2), and wherein the second main shaft (36) is connected with a planetary wheel carrier (51), arranged in the second planetary gear (12). The method comprises the steps: a) ensuring that the moveable parts (22, 26, 50) of the first planetary gear (10) are disconnected from each other, and that the moveable parts (28, 32, 51) of the second planetary gear (12) are disconnected from each other; b) bringing the combustion engine (4) to a predetermined engine speed (nice); and c) controlling the first and the second electrical machine (14; 16) in such a way that a desired torque (TDrv) is achieved in the output shaft (20). The invention also relates to a computer program (P) to control a hybrid powertrain (3) and a computer program product comprising program code for an electronic control device (48) or another computer (53) to implement the method according to the invention.