A method of controlling a hybrid-electric vehicle includes determining that a slow-down condition of the hybrid-electric vehicle comprises a reduction in speed of the hybrid-electric vehicle that is greater than or equal to a threshold. The method also includes modifying transmission shifting points in a regenerative braking mode to rotate an electric machine of the hybrid-electric vehicle above an engine start limit. The method also includes, in response to receiving an indication of an end of the slow-down condition, causing rotation of the electric machine above the engine start limit to trigger starting an engine of the hybrid-electric vehicle.

A hybrid vehicle controller for controlling a hybrid vehicle including a hybrid system is provided. The hybrid system includes an engine, a motor generator, a battery configured to supply power with the motor generator, a clutch configured to connect the engine to the motor generator, and a relay configured to connect the motor generator to the battery. The hybrid vehicle controller includes processing circuitry. The processing circuitry is configured to execute, when an operation requesting opening of the relay is performed, a process that releases the clutch, a negative torque application process that applies a negative torque, which is a torque for lowering a rotational speed of the motor generator, to the motor generator, after releasing the clutch, and a process that releases the relay when the rotational speed of the motor generator becomes less than a threshold.

An on-board controller executes a torque reduction process that reduces torque generated by an electric motor when a brake pedal of a vehicle is depressed and the vehicle is stopped during motor creep driving. When a start request for an internal combustion engine is issued, the on-board controller executes an engine start process that sets a clutch mechanism to an engagement state, which engages an output shaft of the internal combustion engine with an output shaft of the electric motor, and drives the electric motor to perform cranking. When a state in which the clutch mechanism is maintained immediately before the engagement state is defined as an engagement preparation state, the on-board controller executes a preparation process that applies hydraulic pressure to the clutch mechanism during execution of the torque reduction process so that the clutch mechanism is set to the engagement preparation state.

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.

A method of controlling an engine and a transmission of a vehicle includes: determining, by a controller, whether the engine is restarted after releasing the vehicle's SSC (Start & Stop coasting) or whether the vehicle is accelerating during NCC (Neutral Coasting control), determining an RPM and gear stage of the transmission if it is determined that the engine is restarted after releasing the vehicle's SSC or the vehicle is accelerating during NCC, determining a mild hybrid starter and generator (MHSG) target RPM and an MHSG target RPM gradient of the vehicle, performing, by the controller, MHSG RPM control of the vehicle to follow the MHSG target RPM and the MHSG target RPM gradient, determining whether the MHSG RPM slips compared to the MHSG target RPM, and performing proportional-integral-derivative (PID) control to follow the MHSG target RPM if the MHSG RPM slips compared to the MHSG target RPM.

A fire fighting vehicle includes a chassis, a front axle, a rear axle, an engine, a battery system, an electromagnetic device, an accessory drive, and a controller. The accessory drive is positioned to receive a mechanical input from the engine and the electromagnetic device. The controller is configured to selectively engage a plurality of operational modes including a standby mode and a hybrid mode. According to the standby mode, the controller is configured to operate the electromagnetic device using stored energy stored in the battery system to drive the accessory drive with the engine off. According to the hybrid mode, the controller is configured to operate both the engine and the electromagnetic device.

A control method for generating a virtual shifting sense of an electric vehicle is proposed. The objective of the control method is to enable a driver to feel differentiated driving sensitivity and various types of enjoyment of driving by generating and implementing a shifting sense in an electric vehicle without a multi-range transmission like a vehicle with a multi-range transmission. In order to achieve the objective, a control method of an electric vehicle that determines a torque range for controlling a motor and virtual shift intervention torque for implementing a virtual shifting sense from virtual variable information, determines driver request torque corresponding to a driving input value by a driver within the determined torque range, and then controls motor torque using the determined driver request torque and virtual shift intervention torque.

A method of operating a motor vehicle. A request for coupling a power take-off is detected. It is checked (12) whether relevant boundary conditions for coupling the power take-off are fulfilled. If the boundary conditions are fulfilled, a system pressure for actuating the power take-off clutch is built up (16). It is checked (18) whether sufficient system pressure to actuate the power take-off clutch has been built up. When sufficient system pressure has sufficiently been built up, a confirmation signal is produced (20). In reaction to the confirmation signal, a driving transmission control unit is modified (34) in order to actuate the at least one shifting element of the driving transmission with a higher actuation pressure than with an unmodified driving transmission control unit.

It is a control method of a hybrid vehicle that includes an engine and an electrical power generation motor that is connected with the engine for controlling a rotational speed of the engine to be a target rotational speed. When an failure with respect to the engine is judged, an upper limit of a target rotational speed of a firing operation is set to a first upper limit rotational speed lower than an upper limit for a normal state. Further, a target rotational speed of a motoring operation is set to be not higher than the first upper limit rotational speed. It becomes possible to carry out transition between the firing operation and the motoring operation quickly.

The present document relates to a dual motor electric driveline, comprising: a transmission having an input and an output, a power take-off (PTO), a first electric motor drivingly engaged or selectively drivingly engaged with the input of the transmission, a second electric motor, a first clutching device, and a second clutching device, wherein the second electric motor is selectively drivingly engaged with the input of the transmission through the first clutching device, and wherein the second electric motor is selectively drivingly engaged with the PTO through the second clutching device. The present document further relates to a vehicle including said dual motor electric driveline, and to a method of controlling said dual motor electric driveline.