Abstract:
In a method for control of a vehicle with a drive system comprising an output shaft in a combustion engine and a planetary gear with a first (9) and a second (30) electrical machine connected via their rotors (9b, 32) to the components in the planetary gear, a supply of electrical power to electrical auxiliary units and/or loads present in the vehicle is carried out, by way of the combustion engine being kept running with its output shaft connected with the second electrical machine's rotor, and the electrical auxiliary units and/or loads being supplied with electrical power via the first electrical machine and/or the second electrical machine.
Abstract:
In a method for control of a vehicle with a drive system comprising a power unit configuration adapted to provide power for the vehicle's operation, and which comprises a planetary gear and a first (9) and second (30) electrical machine, connected to components in the planetary gear via their rotors (9b, 32), a locking means (34) is moved from a release position, in which the planetary gear's components are free to rotate independently of each other, to a locked position, in which two of the planetary gear's components are locked together, so that the three components (10-12) in the planetary gear rotate with the same speed. The power unit configuration is controlled in order to achieve a synchronous, or substantially synchronous, rotational speed between the input and output shaft of the planetary gear, and the locking means are then moved to the locked position.
Abstract:
The invention relates to a method for shifting in a vehicle (1) with a hybrid powertrain (2), comprising a combustion engine (3), an electric machine (4), a gearbox (6) with an input shaft (10) and a main shaft (14), wherein the combustion engine (3) and the electric machine (4) are connected to the input shaft (10) and a lay shaft (16), which via gear sets (50, 52 and 58, 60, 62) is connected to the input shaft (10) and the main shaft (14), so that they form a split gear unit (13) and a main gear unit (15). The method comprises the steps: a) to bring the main gear unit (15) into a substantially zero torque state, b) in the event the input shaft (10) and the lay shaft (16) must both be accelerated or decelerated: to initiate synchronisation of the speed of the lay shaft (16) with, on the one hand, the speed of the input shaft (10), and, on the other hand, the speed of the main shaft (14), at a joint first point in time (t1 ), c) to engage a gear in the split gear unit (13) when the speed of the lay shaft (16) has been synchronised with the speed of the input shaft (10) at a second point in time (t2), and d) to engage a gear in the main gear unit (15) when the speed of the lay shaft (16) has been synchronised with the speed of the main shaft (14) at a third point in time (t3). The invention also relates to a hybrid powertrain (2) and a vehicle (1), as well as a computer program (P) and a computer program product.
Abstract:
In a method for control a vehicle with a drive system comprising an output shaft of a combustion engine and a planetary gear with a first (9) and a second (30) electrical machine, connected via their rotors (9b, 32) to the components of the planetary gear, the vehicle is started by controlling the first electrical machine to achieve a torque thereof, so that the requested torque is trans¬ mitted to the planetary gear's output shaft, and controlling the second electrical machine to achieve a torque, so that the de¬ sired power to electrical auxiliary aggregates and/or loads in the vehicle, and/or electric energy storage means, if present in the vehicle, for exchange of electric energy with the first and second electrical machine is achieved.
Abstract:
The invention relates to a method to control a hybrid powertrain (2) in a vehicle, comprising a combustion engine (3), an electric machine (4) and a gearbox (6) with an input shaft (10) and output shaft (18), wherein the combustion engine (3) and the electric machine (4) are connected to the input shaft (10). The method comprises the steps of controlling the gearbox (6) to a neutral position; controlling the speed of the electric machine (4) to a predetermined speed, corresponding to a target speed for the input shaft (10) according to the next selected gear; engaging a gear in the gearbox (6); controlling the electric machine (4), so that the electric machine (4) accelerates or decelerates depending on a requested driving torque for the vehicle (1); detecting when a control signal for the electric machine (4) corresponds to a predetermined signal value; and controlling the electric machine (4) to the requested driving torque. The invention also relates to a hybrid powertrain and a vehicle (1), as well as a computer program (P) and a computer program product.
Abstract:
The invention relates to a method for moving off of a vehicle with a hybrid drive line (3), comprising a combustion engine (4); a gearbox (2) with an input shaft (8) and an output shaft (20), which combustion engine is connected to the input shaft (8); 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); 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), via 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: 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 gears are engaged, corresponding to the at least one gear pair (Gl, 60, 72), which is connected with the first planetary gear (10), and 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), in such a way 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.