Systems and methods for controlling transmissions having CVTs are disclosed with multiple modes and gearing arrangements for range enhancements, where embodiments include synchronous shifting to allow the transmission to achieve a continuous range of transmission ratios, while minimizing empty cycling of the CVT during mode shifts. Embodiments provide for wide ratio range and performance and efficiency flexibility, while maximizing CVT usage through synchronous shifting.

A control device of a vehicle, the vehicle having: a power source including an engine and an electric motor; and a power transmission shaft to which the power source is coupled in a power transmittable manner; the vehicle comprising: a power transmission device transmitting a torque of the power source input to the power transmission shaft, to driving wheels; and an electric-power accumulator supplying/receiving electric power to/from the electric motor, the control device comprising: a power source control unit performing charge control for increasing a torque of the engine that achieves a drive demand amount during running of the vehicle in a driving state; and a charge limit control unit performing charge limit control for limiting a charging power in the charge control.

An automotive electronic longitudinal dynamics control system of a motor vehicle comprising a powertrain comprising a propulsor electronically controlled by an electronic engine control module and an automatic transmission electronically controlled by an electronic automatic transmission control module to transmit mechanical power generated by the propulsor to drive wheels of the motor vehicle and comprising an automatic gearbox having a plurality of gears with corresponding gear ratios. The electronic automatic transmission control module is designed to output data indicative of a currently engaged gear and a next engaged gear that will be engaged after the currently engaged gear. The electronic engine control module is designed to receive data indicative of an engine torque request and to responsively control the propulsor based on the received engine torque request to cause the propulsor to output an engine torque equal to the requested engine torque. The automotive electronic longitudinal dynamics control system is designed to: receive from the electronic automatic transmission control module data indicative of the currently engaged gear and the next engaged gear that will be engaged after the currently engaged gear; receive a reference longitudinal acceleration to be followed and a measured longitudinal acceleration; compute an engine torque request for the electronic engine control module based on a longitudinal acceleration error indicative of a deviation of the measured longitudinal acceleration from the reference longitudinal acceleration, on a control law and on the currently engaged gear and the next engaged gear.

A vehicle control apparatus includes a processor configured to obtain operation data including at least one of a required power value of a vehicle, a speed of the vehicle, transmission efficiency, or a gradient angle. The processor is also configured to calculate total mass of the vehicle, including at least one of tolerance mass of the vehicle, mass of a passenger riding in the vehicle, mass of an object loaded into the vehicle, or mass of fuel of the vehicle. The processor is further configured to calculate predicted data including at least one of a ratio of a time when the vehicle travels in an HEV mode to a total driving time of the vehicle, an SOC of a battery of the vehicle, or a load on a road in front of the vehicle. The processor is additionally configured to control the vehicle based on the predicted data.

A hybrid electric vehicle includes an engine, a first motor directly connected to the engine, an engine clutch, a second motor selectively connected to the first motor through the engine clutch, a transmission directly connected to the second motor, a transmission controller configured to determine whether the transmission needs to be shifted, and a hybrid controller configured to compare a target torque reduction with intervention limits of the first and second motors when the engine clutch is in a locked-up state, to set torque reduction amounts of the engine, the first motor, and the second motor, respectively, and to output a torque command for controlling the torques of the engine, the first motor, and the second motor, respectively.

There are provided: an input torque detection part configured to detect an input torque variation value; a first filter processing part configured to extract and obtain, from the input torque variation value, a post-first-filter variation value that varies with a specific variation period; a vibration reduction control part configured to calculate an opposite-phase torque variation value whose phase is opposite to a phase of the post-first-filter variation value, and execute vibration reduction processing; and a second filter processing part configured to extract and obtain, from the post-first-filter variation value, a post-second-filter variation value that varies with a period longer than the specific variation period. The vibration reduction control part is configured to cause the vibration reduction processing to be brought into a non-execution state based on the post-second-filter variation value.

An apparatus for controlling a travel mode of a four-wheel drive vehicle, the apparatus includes a heat generation amount calculation unit configured to determine a heat loss amount of a torque converter, a rough terrain travel start determination unit configured to determine, whether to start travel on a road having rough terrain conditions, a first travel mode control unit configured to control entry into a semi-off-road travel mode when a current travel mode is an on-road travel mode, a rough terrain travel maintenance determination unit configured to determine whether to maintain the travel on the road having the rough terrain conditions during the semi-off-road travel mode, based on the heat loss amount, and a second travel mode control unit configured to control entry into a dedicated off-road travel mode from the current travel mode when it is determined to maintain the travel on the road having the rough terrain conditions.

An apparatus for controlling a travel mode of a four-wheel drive vehicle, the apparatus includes a heat generation amount calculation unit configured to determine a heat loss amount of a torque converter, a rough terrain travel start determination unit configured to determine, whether to start travel on a road having rough terrain conditions, a first travel mode control unit configured to control entry into a semi-off-road travel mode when a current travel mode is an on-road travel mode, a rough terrain travel maintenance determination unit configured to determine whether to maintain the travel on the road having the rough terrain conditions during the semi-off-road travel mode, based on the heat loss amount, and a second travel mode control unit configured to control entry into a dedicated off-road travel mode from the current travel mode when it is determined to maintain the travel on the road having the rough terrain conditions.