A powertrain system includes a control device configured, where an engine speed at the time of detection of an acceleration request with a high acceleration request index value is lower than a specific engine speed, to: set the specific engine speed as an initial target engine speed for an acceleration associated with the acceleration request; and in a first acceleration time period before reaching the initial target engine speed, control an internal combustion engine in accordance with a first target engine power based on the initial target engine speed and supply, to an electric motor, a battery power corresponding to a difference obtained by subtracting the first target engine power from a required vehicle power. The specific engine speed is a value predetermined as a lower limit value of an engine speed range in which engine sound of the internal combustion engine is heard inside the vehicle.

A method of controlling a sleep maintenance motion includes: determining, by a sleep maintenance mode entry determiner, whether a vehicle enters a sleep maintenance mode; when the vehicle enters the sleep maintenance mode, calculating, by an engine target speed profile calculator, an engine target speed profile; calculating, by an engine/hybrid starter generator (HSG) target torque calculator, an engine/HSG target torque based on the calculated engine target speed profile; and controlling, by the sleep maintenance mode entry determiner, a sleep maintenance motion based on an operation of an engine/HSG.

A hybrid vehicle includes an engine; an output member, a rotary electric machine; and a power dividing mechanism including an input element coupled to the engine, a reaction force element coupled to the rotary electric machine, and an output element coupled to the output member. Further, the rotary electric machine is provided such that, in order that a torque corresponding to required engine torque based on an acceleration request is applied to the drive wheel, a reaction torque corresponding to the required engine torque is output, the reaction torque of the rotary electric machine is output when an engine speed is equal to or higher than a predetermined value, and, when the engine speed is lower than the predetermined value, an engine speed increase rate is maximized regardless of an accelerator opening degree.

A control method for a hybrid vehicle (1) is provided. The hybrid vehicle includes an electric motor (13) that drives the vehicle to travel, a generator (12) that supplies power to the electric motor, and an engine (11) that drives the generator. The control method includes storing the timing at which an amount or factor of change in target driving force (Fd) for the vehicle becomes a predetermined threshold or more, calculating an estimated trajectory of the rotational speed of the engine in accordance with the amount or factor of change in the target driving force, and when an increase request for power generation is issued to the engine at different timing than the timing, controlling the rotational speed of the engine on the basis of the calculated estimated trajectory.

Controllers, control architectures, systems and methods are described for controlling a host vehicle's participation in a platoon. Described vehicle platooning control systems may include a platoon controller and a vehicle interface controller. The platoon controller is configured to determine torque and braking requests for at least partially automatically controlling the host vehicle to platoon with a platoon partner. The vehicle interface controller manages communications between the platoon controller and one or more host vehicle control units. The vehicle interface controller may also include a safety monitor including one or more safety monitoring algorithms In some embodiments, the vehicle interface controller is at least ASIL-C compliant, whereas the platoon controller and an optional gateway processor may be QM rated under ISO 26262. The platoon controller may be configured as a listener capable of receiving but not transmitting messages on the host vehicle's control related communication bus(es).

An off-road vehicle speed control assembly that includes a speed control device, a speed sensor, tire pressure sensors and an electronic controller. The speed control device controls speed of a vehicle power plant. The electronic controller is in electronic communication with the speed control device, the speed sensor and the plurality of tire pressure sensors and is configured to operate the speed control device in at least two different modes of operation: a normal mode in which the plurality of tires are inflated to a high-speed tire pressure; and, a first off-road mode in which the plurality of tires are inflated to a first off-road tire pressure that is less than the high-speed tire pressure. In the normal mode, speeds of the vehicle are unrestricted by the electronic controller. In the first off-road mode, speed of the vehicle is restricted.

When it is determined that there is a likelihood of occurrence of an abnormality in a supercharger, a maximum engine rotation speed and a maximum MG2 rotation speed are changed to a low rotation speed side and operating points of an engine and a rotary machine are controlled such that an engine rotation speed and an MG2 rotation speed are respectively within ranges which do not exceed the changed maximum rotation speeds. Accordingly, even when the supercharger does not operate normally and an abnormal increase in a supercharging pressure occurs, it is possible to curb a high-rotation state of the engine rotation speed and the MG2 rotation speed. As a result, even when an abnormal increase in the supercharging pressure occurs, it is possible to curb a decrease in durability of components.

When an acceleration request is issued, an electronic control unit for a hybrid vehicle performs control for producing an acceleration feeling of setting a target engine rotation speed to an initial rotation speed (=basic initial value+initial value correction value) which is lower than an optimal-fuel-efficiency rotation speed at which required engine power is able to be most efficiently output and increasing the engine rotation speed from the initial rotation speed to the optimal-fuel-efficiency rotation speed at a rotation speed increase rate (=basic increase rate+increase rate correction value) based on the elapse of time. When the target supercharging pressure is high, the initial value correction value is set to a greater value and the increase rate correction value is set to a greater value than when the target supercharging pressure is low.

An engine control apparatus is applied to a system including rotating electrical machine, a battery connected to the rotating electrical machine via a power conversion circuit, and an electric load. The engine control apparatus determines that engine speed is within a predetermined rotation speed range including at least a resonance range of an engine during a rotation drop period while engine speed drops to zero after engine combustion is stopped, and, in the case where it is determined that engine speed is within predetermined rotation speed range, selectively performs one of first rotation drop processing of increasing reduction rate of engine speed by regenerative power generation of the rotating electrical machine and second rotation drop processing of increasing reduction rate of engine speed by causing rotating electrical machine to perform power driving on an inverse rotation side. At a rotation drop control unit the first rotation drop processing is performed.

Systems and methods for operating a vehicle that includes a manual transmission are presented. In one example, a speed rate of change of a driveline torque source is adjusted during shifting gears of the manual transmission responsive to a rate of release of a clutch pedal. The driveline torque source rotational speed adjustment aligns rotational speeds of driveline components.