摘要:
The present invention relates to a method to control a hybrid powertrain (3), comprising a combustion engine (4); a gearbox 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): a second planetary gear (12), connected to the first planetary gear (10); 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). The method comprises the steps: a) engaging gears in the gearbox (2), corresponding to the at least one gear pair (G1, 60, 72), which is connected with the first planetary gear (10), and to the gear pair (G2, 66, 78), which is connected with the second planetary gear (12) and the output shaft (20); and b) connecting a second sun wheel (32), arranged in the second planetary gear (12), and a second planetary wheel carrier (51) with each other, with the use of a second coupling device (58). The invention also relates to a vehicle (1) with a hybrid powertrain (3), which vehicle (1) comprises a gearbox (2), which is controlled according to the method. 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.
摘要:
A method is provided to start a hybrid powertrain to optimize fuel consumption, wherein such hybrid powertrain comprises a combustion engine; a gearbox with input shaft and output shaft; a first planetary gear, connected to the input shaft and a first main shaft; a second planetary gear, connected to the first planetary gear and a second main shaft; first and second electrical machines respectively, connected to the first and second planetary gears; one gear pair connected with the first main shaft; and one gear pair connected with the second main shaft. The method comprising: ensuring that the moveable parts of each of the first and second planetary gears are respectively disconnected from each other; bringing the combustion engine to a predetermined engine speed (nice); and controlling the first and the second electrical machine in such a way that a desired torque (TDrv) is achieved in the output shaft.
摘要:
A dual clutch transmission has an electrical machine (25) coupled to the input shafts (15, 16) thereof via one-way clutches (31, 32). The electrical machine acts as a generator, and can be driven at high speed by the input shaft which is not transmitting engine torque. The electrical machine may also act as a motor to start an internal combustion engine via an automatic one-way clutch and reverse speed ratio.
摘要:
A method for controlling the state of a drivetrain comprising a set of couplers and reducers (4, 5) between a powertrain (2, 3) of a motor vehicle and one or a plurality of drive wheels (6, 7) of the vehicle, the drivetrain being capable of taking up a plurality of kinematic states each defined by a diagram of engagements (Rappth, RappE) of the couplers and reducers (4, 5) making it possible to link an engine (2, 3) of the powertrain to at least one drive wheel (6, 7), which involves calculating, before changing the kinematic state, depending on a current speed (V) of the vehicle, the current kinematic state of the vehicle and an intended kinematic state that is different from the current state, a change-of-state end speed, and comparing this change-of-state end speed with a threshold.
摘要:
A hybrid vehicle control apparatus (100) is provided with: a first replacement controlling device which replaces regenerative braking torque of the rotating electrical machine by engagement torque of the clutch if probability of starting an internal combustion engine is high on demand of changing a connection state between a rotating electrical machine and a transmission mechanism in regenerative braking by the regenerative braking torque of the rotating electrical machine; and a second replacement controlling device which replaces the regenerative braking torque by friction braking torque if the start probability is low on the change demand.
摘要:
At a hybrid vehicle including a driving power generation device with an engine, a first MG (motor generator) and a second MG, and a transmission device including a power split mechanism coupling an output shaft to the engine and the first MG, and a transmission coupling an output shaft to the second MG, an ECU stops the driving power generation device when the transmission device is in error. Then, the ECU determines whether the vehicle is actually stopped or not based on a detection value from a wheel speed sensor, and maintains the supply of electric power from the battery until a determination is made that the vehicle has actually stopped.
摘要:
A hybrid vehicle includes: an engine; a driving motor/generator connected to an output shaft of the engine; a connection unit disposed between the engine and the driving motor/generator to separate the engine from the driving motor/generator when the engine is stopped and to connect the engine to the driving motor/generator when the engine is operated; a manual transmission connected to the driving motor/generator, for directly varying gear ratio without using an engine clutch according to a driving speed and a torque generated by the driving motor/generator and/or the engine; a position sensor for detecting a position of a manual gearshift lever; and a central control unit connected to the engine, the driving motor/generator, the connection unit, and the manual transmission. In order to perform a gearshift of the manual transmission, the central control unit separates the connection unit disposed between the engine and the driving motor/generator when the vehicle is stopped or driven at a preset speed or lower or connects the connection unit when the vehicle is driven at the preset speed or higher, and controls the driving motor/generator and/or the engine according to the detected position of the manual gearshift lever to adjust a speed of an input shaft of the manual transmission.
摘要:
Vehicular drive system which is small-sized and/or improved in its fuel economy. A power distributing mechanism 16, which is provided with a differential-state switching device in the form of a switching clutch C0 and a switching brake B0, is switchable by the switching device between a differential state (continuously-variable shifting state) in which the mechanism is operable as an electrically controlled continuously variable transmission, and a fixed-speed-ratio shifting state in which the mechanism is operable as a transmission having a fixed speed ratio or ratios. The power distributing mechanism 16 is placed in the fixed-speed-ratio shifting state during a high-speed running of the vehicle or a high-speed operation of engine 8, so that the output of the engine 8 is transmitted to drive wheels 38 primarily through a mechanical power transmitting path, whereby fuel economy of the vehicle is improved owing to reduction of a loss of conversion of a mechanical energy into an electric energy. The mechanism 16 is also placed in the fixed-speed-ratio shifting state during a high-output operation of the engine 8, so that the required electric reaction of first electric motor M1 can be reduced, whereby the required size of the first electric motor M1, and the required size of the drive system 10 including the electric motor M1 can be reduced.