A control system for a vehicle includes an electronic control unit. The electronic control unit is configured to i) calculate a target supercharging pressure of an intake air such that, when an internal combustion engine is operated through the homogeneous charge compression ignition, the internal combustion engine achieves a required output while satisfying a predetermined requirement, ii) control an output of the internal combustion engine such that the output approaches the required output in accordance with an actual supercharging pressure in process of changing the actual supercharging pressure to the target supercharging pressure that is achieved by a supercharger, and iii) control a rotary machine such that an output of the rotary machine compensates for part or all of a differential output between the required output and the output in process of changing the actual supercharging pressure to the target supercharging pressure.

A method of increasing engine braking of an engine for a vehicle, the method including: determining the change in kinetic energy of the vehicle over a period; determining the energy output from a drivetrain of the vehicle over the period; comparing the change in kinetic energy to the energy output; and increasing the engine braking of the vehicle when the change in kinetic energy is greater than the energy output over the period.

A control device for a hybrid vehicle is provided. When a first drive mode is selected as the drive mode of the hybrid vehicle, a control section shifts the drive mode to a second drive mode when a charge amount of a battery for an electric motor becomes smaller than or equal to a determination charge amount. The first drive mode operates the electric motor while an internal combustion engine is stopped. The second drive mode permits the operation of the internal combustion engine. The control section executes a shifting process when the upper limit system output is lower than or equal to a startup determination output even though the charge amount of the battery is greater than the determination charge amount. The shifting process shifts the drive mode to the second drive mode to start the internal combustion engine.

A vehicle controller, a vehicle control system, a vehicle learning device, a vehicle control method, and a memory medium are provided. A switching process switches relationship defining data used in an operation process to post-measure data, when a detection process detects that a functional recovery measure has been taken. The switching process includes a process that uses, as the post-measure data, initial data that is the relationship defining data of a state before an update process is executed as the vehicle travels.

A deceleration factor estimation apparatus estimating a deceleration factor of a vehicle includes: a driving force acquisition unit that obtains a driving force of the vehicle; a speed acquisition unit that obtains a speed of the vehicle; an acceleration acquisition unit that obtains an acceleration of the vehicle; and a deceleration factor estimation unit that estimates a plurality of deceleration factors on the basis of a relationship between the obtained driving force, speed, and acceleration, wherein the deceleration factor estimation unit switches the deceleration factor to be estimated on the basis of a travel condition of the vehicle.

A wireless communication device for collecting vehicle on-board diagnostics (OBD) data is disclosed, together with associated methods of handling OBD data in such wireless communication devices. The device comprises a connector for connecting the device to an OBD port of a vehicle to receive OBD data; a processor configured to continually aggregate the OBD data and/or acceleration data from an acceleration sensor into risk profile data during a journey made by the vehicle; a memory for storing the latest risk profile data for the journey; and a wireless transceiver for transmitting the stored risk profile data to an external mobile device during the journey. The processor is further configured to determine an engine state of the vehicle and to detect when the vehicle begins and ends a journey based on said determined engine state and OBD data relating to vehicle speed and/or engine revolutions, and to cause the stored risk profile data to be deleted from the memory upon detection that the vehicle has begun a new journey.

Provided is a control method of a hybrid vehicle provided with an engine, a power-generation motor generator, and a travel motor generator. The hybrid vehicle has a series hybrid mode in which the power-generation motor generator is driven by the engine to generate electric power and the travel motor generator is driven by the electric power generated by the power-generation motor generator. The hybrid vehicle has a filter configured to collect a particulate matter in exhaust gas from the engine. The control method includes performing an operation limitation of the engine based on a loaded amount of the particulate matter in the filter.

The invention provides a method for controlling a vehicle (1) comprising a drivetrain comprising at least one drive device (2) adapted to generate mechanical power, the method comprising—controlling the vehicle to perform a mission comprising a plurality of stages (MS1-MS12), —collecting operational data relevant to the operation of the drivetrain, wherein the operational data indicate a de-rate of a component of the drivetrain, a fault of a component of the drivetrain, and/or an environmental condition which influences the drivetrain operation, —determining an expected mission stage (MS1-MS12), —determining, in dependence on the operational data, the propulsive capacity (CA1-CA3) in at least two different operational areas (A1-A3) of the drive device (2), —mapping the operational area propulsive capacities (CA1-CA3) to the expected mission stage (MS1-MS12), and—controlling the vehicle (1) in dependence on said mapping.

A hybrid electric vehicle and method of its control include a parallel hybrid powertrain including an engine, a transmission, a battery system, a first electric motor coupled to the engine by a first clutch between the engine and the first electric motor, a second electric motor coupled to the transmission and to the first electric motor by a second clutch between the first and second electric motors, and a controller configured to control the parallel hybrid powertrain for optimal operation across a plurality of different propulsion and charging modes, including calculating cost values for each of the engine and the first and second electric motors and selecting optimal propulsion and charging modes based on the calculated cost values.

A device for controlling driving of an electric four-wheel drive vehicle at the time of shift is provided. The device controls driving of an electric four-wheel drive vehicle to minimize energy loss occurring on a power transmission path during shift, thereby improving fuel efficiency.