A transmission system selectively coupled to an engine crankshaft of an internal combustion engine arranged on a vehicle includes a transmission, a motor generator an HVAC compressor and a controller. The transmission has an input shaft, a mainshaft, an output shaft and a countershaft offset from the input shaft. The countershaft is drivably connected to the first input shaft and a mainshaft. The motor generator is selectively couple to the countershaft. The HVAC compressor is selectively driven by the motor generator. The controller operates the transmission system in various modes based on operating conditions.

A method of providing a heating cycle for an after-treatment system is described. The method comprises initiating a pre-charge cycle of a DCDC converter and determining a temperature of the after-treatment system. In response to determining the temperature of the after-treatment system is below a threshold temperature and the pre-charge is complete, the method further comprises operating a solid-state switch to electrically connect a high voltage power source to a heating element to of the after-treatment system, and heating the after-treatment system with the heating element until the after-treatment system reaches the threshold temperature.

A hybrid drive train for a hybrid vehicle includes an internal combustion engine configured to drive the hybrid vehicle and an output shaft configured to provide torque to drive the hybrid vehicle, and a transmission which has a transmission input shaft. The hybrid drive train also includes a first electric machine by which the transmission input shaft can be driven, a second electric machine by which the output shaft can be driven to start the internal combustion engine, and an auxiliary unit configured to be driven by the second electric machine.

A method for producing an active short circuit condition in an electric motor of a hybrid electric vehicle including a traction battery, an inverter having switches in communication with the electric motor and the traction battery, and an inverter controller in communication with the inverter and configured to generate driver signals to operate the switches to produce three-phase alternating current for the electric motor to drive a vehicle propulsion system or to produce direct current for charging the traction battery. The method includes determining an electric motor speed threshold, wherein the electric motor speed threshold is continuously variable, comparing a monitored speed to the speed threshold, and generating, in response to the monitored speed exceeding the speed threshold, driver signals to operate the switches to produce an active short circuit condition in the electric motor to prevent overcharging of the traction battery.

An acceleration method for a hybrid drivetrain includes providing the hybrid drivetrain, setting an initial torque transmission ratio of a belt-drive transmission to a lower transmission ratio, and opening a first disconnect clutch to interrupt torque transmission between an internal combustion engine and an electric machine. The method also includes receiving an acceleration command, shifting the torque transmission ratio with a transmission adjustment gradient from the lower transmission ratio towards an upper transmission ratio, increasing a rotor speed of a rotor shaft of the electric machine with a rotor shaft adjustment gradient, and engaging a first disconnect clutch to rotate an ICE shaft to start the internal combustion engine and increase a rotational speed of the ICE shaft towards a current rotor speed.

A system for operating a vehicle, which has an internal combustion engine, an electric machine, a front axle with front wheels, a rear axle with rear wheels and a battery. The system is provided that the electric machine is in a direct force-acting relationship to the rear axle. The system includes at least one primary clutch arrangement, via which the electric machine can be connected to the wheels of at least one axle, and a secondary clutch arrangement via which the electric machine can be connected to the internal combustion engine. For starting the internal combustion engine, the electric machine is to be separated from the wheels of the at least one axle via the at least one primary clutch arrangement and is to be connected to the internal combustion engine via the secondary clutch arrangement.

A control system for a hybrid vehicle configured to start an engine promptly during propulsion in an electric vehicle mode. Electric power generation resulting from cranking the engine by a first motor is greater in the first electric vehicle mode compared to a second electric vehicle mode. A controller that is configured to determines whether an acceptable input power to an electric storage unit is smaller than a threshold value. If the acceptable input power to the electric storage unit is smaller than the threshold value, selection of the first electric vehicle mode is inhibited.

A hybrid drive train includes a first electric motor, a nested power splitting planetary gear set having a first carrier element and a second carrier element, an inner sun gear coupled with the first electric motor and an outer sun gear coupled with an output shaft. A first selectable one-way clutch controls the first and the second carrier element, and switches between operation as a one way clutch and operation as a brake. A second selectable one-way clutch controls a ring gear of the nested planetary gear set, and switches between operation as a one way clutch and operation as a brake. The extra outer planetary gear set improves lowing capacity at higher speeds without substantially increasing the axial length of the power split device.

A method of reducing cold start emissions in a series mode hybrid electric vehicle, including an internal combustion engine with an exhaust duct having a catalyst and a downstream oxygen sensor, an output of the combustion engine being connected to an electric generator with a power output of at least 10 kW that is connected to an electric motor which is coupled to a drive shaft of two or more wheels. The method includes detecting a cold start condition, injecting fuel into the engine such that combustion at a lambda value, λ, is achieved for which λ>1, running the engine at a speed of 1000 rpm or higher, determining if the efficiency of the catalyst reaches a first level, setting λ to about 1 after the predetermined efficiency level of the catalyst has been reached, and reducing the speed to working conditions when the catalyst efficiency reaches a second level.

The invention relates to a method for the position determination of an object (6, 6a . . . 6d), which is conveyed on a conveying device (1a . . . 1c). In this process, a deviation (ΔP) between a position (P.sub.sig) of the object (6, 6a . . . 6d), which is calculated with the aid of rotation signals from the drives (M) for conveyor elements (2, 2.sub.M, 2.sub.L) of the conveying device (1a . . . 1c), and a position (P.sub.1 . . . P.sub.5) of a detection area (E.sub.1,E.sub.2) of a sensor (L.sub.1 . . . L.sub.5) fixedly installed on the conveying device (6, 6a . . . 6d) is determined and used for calculating a corrected position (P.sub.korr) of the object (6, 6a . . . 6d) during a movement of the object (6, 6a . . . 6d) away from this detection area (E.sub.1,E.sub.2). Furthermore, a conveying device (1a . . . 1c) for performing the presented method is indicated.