A method and system for operating a vehicle that includes a plurality of engine starting devices and an internal combustion engine is described. In one example, the method selects one of a plurality of engine starting devices to start an engine based on durability metrics of each of the plurality of engine starting devices. In addition, engine starting device selection may be based on calibration parameters that are generated via a server that is external to the vehicle.

Device (DMT) arranged to provide an additional voltage, when the heat engine starts up, for the electrical power supply of the rotating electrical machine (AD). This additional voltage is added to a rated voltage of the on-board electrical system (RB) provided by a battery (BAT). The device comprises a second voltage source (Ucap) and electronic switches (K1, K2), each comprising at least one MOSFET transistor. At least one MOSFET transistor (K2) of the switches, mounted in series with the second voltage source, is controlled in linear mode at the end of the startup of the heat engine. Advantageously, the device comprises current control loops for controlling the transistors in linear mode.

A device for automatically stopping and restarting an internal combustion engine is provided with a crank angle sensor (1) that detects a crank angle of an engine (10), a fuel injection unit (11) that injects fuel into the engine, and the device is also provided with a starter activation prohibition determination means that prohibits activation of a starter (20) by determining that the engine is in reverse rotation during inertial rotation of the engine, and removes the starter activation prohibition depending on the crank angle when the engine starts reverse rotation.

A starting control device for an internal combustion engine is provided with a hard cranking device and a soft cranking device that are respectively capable of and incapable of cranking the internal combustion engine to a target idle rotation speed. The starting control device includes: a starting mode determination unit determining whether to carry out starting in a non-combustion pressure mode whereby starting is carried out with the hard cranking device, or in a combustion pressure combination mode whereby starting is carried out through cranking with the soft cranking device while using a combustion pressure generated by supplying fuel to the internal combustion engine in combination; and an intake air amount control unit making an amount of intake air during cranking differ between a case where starting is carried out in the non-combustion pressure mode and a case where starting is carried out in the combustion pressure combination mode.

A method of automatically starting an internal combustion engine of a hybrid vehicle includes defining a rotational engine speed profile to represent a desired engine speed during a starting event with a hybrid system controller, and communicating the rotational engine speed profile to an engine controller. The internal combustion engine is rotated with an electric propulsion motor of the hybrid vehicle. A spark correction offset is calculated with the engine controller based on the rotational engine speed profile. The internal combustion engine is fired with the calculated spark correction offset for a pre-determined number of firing events, with the engine controller, as the rotational speed of the engine increases. The rotational speed of the internal combustion engine is controlled with the hybrid system controller after the pre-determined number of firing events.

A control device for a vehicle includes an opening degree sensor to detect an opening degree of a wastegate valve disposed in a bypass passage bypassing a turbine. Circuitry is configured to stop an internal combustion engine while the vehicle is driven by a motor in a motor drive mode. The circuitry is configured to calculate a target opening degree of the wastegate valve to be larger than a maximum error between the opening degree detected by the opening degree sensor and an actual opening degree of the wastegate valve. The circuitry is configured to control the wastegate valve such that the opening degree detected by the opening degree sensor is equal to the target opening degree while the vehicle is driven in the motor drive mode.

A method for controlling an SSC-SCC system for increasing a SSC distance using SCC is provided. The method includes determining whether a vehicle in operation satisfies a preset SSC entry condition and entering the SSC mode or maintaining the SSC entry state when the vehicle satisfies the preset SSC entry condition. A distance from a preceding vehicle is measured after the entering of the SSC mode or the maintaining of the SSC entry state. Additionally, the method includes determining whether the measured distance is equal to or less than a preset reference distance and performing SCC braking in response to determining that the measured distance is equal to or less than the preset reference distance.

An arc welding system includes a welding power supply. An auxiliary power supply supplies electrical energy to an auxiliary load. An engine-generator is connected to the welding power supply and auxiliary power supply. An engine starting battery is connected to the auxiliary power supply to supply electrical energy thereto during starting of the engine-generator. An auxiliary load sensor is configured to detect a presence of an electrical load on the auxiliary power supply. A speed sensor is configured to sense a speed of the engine-generator. A controller is configured to receive a signal indicating presence of the electrical load on the auxiliary power supply and a signal corresponding to speed of the engine-generator. When presence of the electrical load on the auxiliary power supply is detected, the controller starts the engine-generator, and after the engine-generator has reached a predetermined speed, switches the auxiliary power supply from the battery to the engine-generator.

A starter system including a motor, a solenoid assembly having a solenoid switch, a pinion rotated by the motor and moveable into an engaging position in which an engine may be cranked and the solenoid switch is closed to energize the motor from an electric power source, and relay switch regulated by a controller and closed to apply electrical power to the solenoid assembly for actuating the solenoid switch. The controller repeatedly opens and closes relay switch during a starting operation if sensed motor energization voltage monitored by the controller falls below a predetermined threshold level within a predetermined time period after electrical power is applied to the solenoid assembly, whereby electrical power applications to the solenoid assembly are automatically repeated during a starting operation to correct “click-no-crank” events and prevent prolonged power application to the solenoid assembly. A related method is also disclosed.

A method for controlling restart of a vehicle is provided. The method includes allowing the vehicle to enter into an ISG state and allowing the vehicle to actuate the Auto Hold. Whether the vehicle fulfills a condition for releasing the Auto Hold is then determined and operation of the Auto Hold is released in response to determining that the vehicle fulfills the condition for releasing the Auto Hold. Additionally, the method includes determining whether the vehicle fulfills a condition for releasing the ISG and releasing the ISG and restarting an engine in response to determining that the vehicle fulfills the condition for releasing the ISG.