A vehicle includes an engine configured for autostop and autostart. The vehicle further includes an electric actuator for an active front steering system. Before the engine is autostopped, a controlled decrease in demand current for the electric actuator is initiated. After the engine is autostarted, a controlled increase in demand current for the electric actuator is initiated.

A hybrid electric vehicle includes a combustion engine, and an electric machine and storage battery coupled to one or more controller(s) configured to respond to various signals from a driver and vehicle components. In response, such controller(s) enable an automatic or auto ICE start stop capability that is managed for optimal HEV lifecycle operation, and fuel economy and efficiency. The controller(s) automatically start and stop the ICE in response to one or more of a torque demand signal, a vehicle speed signal, a steering torque power signal, and a brake signal. The controller(s) inhibit automatic stop of ICE responsive to the steering torque power exceeding a stop threshold, and in contrast initiate or enable automatic start responsive to the steering torque power exceeding a start threshold. The start threshold is calibrated and adjusted to exceed the stop threshold by a stability factor that is predetermined and/or adjusted by the controller(s).

According to a system and a method for controlling an engine for an industrial vehicle according to an exemplary embodiment of the present specification, a control unit acquires state information of the industrial vehicle, accurately determines a state of the industrial vehicle based on the acquired state information, and controls whether to start or stop the engine in an idle state.

A vehicle control apparatus is mounted on a vehicle, which includes an engine and a motor configured to start the engine. The vehicle control apparatus is provided with: a first controller programmed to perform a departure prevention control, which is to prevent the vehicle from departing from a driving lane, when the vehicle is about to depart from the driving lane; and a second controller programmed to perform an automatic stop control, which is to automatically stop the engine on condition that a predetermined stop condition is satisfied, and which is to operate the motor and to restart the engine on condition that a predetermined start condition is satisfied after the engine is automatically stopped. The first controller is programmed to prohibit a start of an automatic stop of the engine by the automatic stop control, when the vehicle is about to depart from the driving lane.

A method for controlling operation of a hydraulic idle stop and go (ISG) system using an electro hydraulic power steering (EHPS) system includes measuring a pressure in an accumulator, a steering angle, and a steering angular velocity; determining whether the measured pressure in the accumulator is less than an absolute value of a first reference pressure; determining whether the measured steering angle is less than an absolute value of a reference angle when the measured pressure in the accumulator is less than the absolute value of the first reference pressure; determining whether the measured steering angular velocity is less than an absolute value of a reference angular velocity when the measured steering angle is less than the absolute value of the reference angle; and opening a solenoid valve when the measured steering angular velocity is less than the absolute value of the reference angular velocity.

In some embodiments of the present disclosure, sensors mounted on a vehicle can allow opportunities for coasting to be predicted based on environmental conditions, route planning information, and/or vehicle-to-vehicle or vehicle-to-infrastructure signaling. In some embodiments of the present disclosure, these sensors can also predict a need for power and/or an end of a coast opportunity. These predictions can allow the vehicle to automatically enter a coasting state, and can predictively re-engage the engine and/or powertrain in order to make power available with no delay when desired by the operator.

In a steer by wire and idle stop vehicle, the idle stop is terminated if the steering wheel (11) is turned by more than a prescribed threshold value. For the purpose of preventing consumption of power by a steering actuator and preventing an unexpected steering action upon termination of the idle stop, the engine restart threshold value (th) is varied depending on the direction of the change of the steering angle from the start of the idle stop operation. In particular, if the change () of the steering angle is in the direction to increase the steering angle from the value (s) at the start of the idle stop operation, the engine restart threshold value is raised. If the change of the steering angle is in the direction to decrease the steering angle from the value at the start of the idle stop operation, the engine restart threshold value is lowered.

A hybrid electric vehicle includes a combustion engine, and an electric machine and storage battery coupled to one or more controller(s) configured to respond to various signals from a driver and vehicle components. In response, such controller(s) enable an automatic or auto ICE start stop capability that is managed for optimal HEV lifecycle operation, and fuel economy and efficiency. The controller(s) automatically start and stop the ICE in response to one or more of a torque demand signal, a vehicle speed signal, a steering torque power signal, and a brake signal. The controller(s) inhibit automatic stop of ICE responsive to the steering torque power exceeding a stop threshold, and in contrast initiate or enable automatic start responsive to the steering torque power exceeding a start threshold. The start threshold is calibrated and adjusted to exceed the stop threshold by a stability factor that is predetermined and/or adjusted by the controller(s).

The present disclosure relates to a control apparatus (1) for automatically activating a vehicle propulsion apparatus (4). The control apparatus (1) includes a controller (6) comprising an electronic processor (7) having an electrical input for receiving at least a first control signal generated in dependence on driver operation of a transmission controller (12) or a primary vehicle control (15, 16, 17). An electronic memory device (8) is electrically coupled to the electronic processor (7) and has instructions stored therein. The electronic processor (7) is configured to access the memory device (8) and execute the instructions stored therein such that it is operable to receive the first control signal from the first vehicle control (10); and, in dependence on said first control signal, output at least a first activation signal (SIG.sub.EG) for automatically activating the vehicle propulsion apparatus (4).

A SS control device is configured to: be allowed to stop an internal combustion engine when a required voltage is smaller than or equal to a first voltage value under a state where a stopping condition is satisfied, and be prohibited from stopping the internal combustion engine when the required voltage is larger than the first voltage value under a state where the stopping condition is satisfied; and be allowed to restart the internal combustion engine when the required voltage is smaller than or equal to a second voltage value smaller than the first voltage value under a state where the restart condition is satisfied, and be prohibited from restarting the internal combustion engine when the required voltage is larger than the second voltage value under a state where the restart condition is satisfied.