A process for starting an internal combustion engine, providing the use of an electric motor acting on the driveshaft of the internal combustion engine, provides a positioning step, activated upon switching-off the engine, and a switching-on step, activated after a starting control, wherein said positioning step comprises: a forward rotation by a predetermined forward rotation angle; a detection of a possible stall state followed, in negative case, by an additional forward rotation until reaching a predetermined maximum forward rotation angle; an inverse rotation by a predetermined angle; and a detection of a possible stall state followed, in negative case, by an additional inverse rotation until reaching a predetermined maximum inverse rotation angle.

A vehicle information recording device includes: a first control device that continuously stores, into a data storage device, vehicle information indicative of a state of a vehicle having an engine; a first determination device that determines whether the engine is stalled; a second control device that stores engine stall information into the storage unit when the first determination device determines that the engine is stalled while the first control device is storing the vehicle information into the data storage device; and a second determination device that determines whether the engine starts. When the second determination device determines that the engine starts, and the engine stall information is stored in the storage unit, the first control device starts storing the vehicle information into the data storage device.

A starting control method for a vehicle having an engine may include determining, by an ECU, whether engine RPM rises when the engine is started, determining whether combustion-related parts are normal, when the engine RPM does not rise over a starter RPM, determining whether a cam position sensor and a crank position sensor are normal, when it is determined that the combustion-related parts are normal, performing control to offset a recognized crank angle by 360 degrees, when it is determined that the cam position sensor and the crank position sensor are normal, and restarting the engine based on the offset crank angle.

Provided is a device for controlling an operation of a modem for a vehicle in order to prevent battery discharge, comprising: a modem for a vehicle mounted on the vehicle; and a TCU (Telematic Control Unit) for frequently or periodically detecting a communication environment of the modem for the vehicle when the modem for the vehicle enters a standby state mode, and, when the number of times of repetition of a normal service state and a no-service state is larger than or equal to a reference value or when the number of times of repetition of communication network registration is larger than or equal to the reference value, cutting off standby power of the modem for the vehicle even before a standby time preconfigured in the modem terminates.

A process for starting an internal combustion engine, providing the use of an electric motor acting on the driveshaft of the internal combustion engine, provides a positioning step, activated upon switching-off the engine, and a switching-on step, activated after a starting control, wherein said positioning step comprises: a forward rotation by a predetermined forward rotation angle; a detection of a possible stall state followed, in negative case, by an additional forward rotation until reaching a predetermined maximum forward rotation angle; an inverse rotation by a predetermined angle; and a detection of a possible stall state followed, in negative case, by an additional inverse rotation until reaching a predetermined maximum inverse rotation angle

A vehicle information recording device includes: a first control device that continuously stores, into a data storage device, vehicle information indicative of a state of a vehicle having an engine; a first determination device that determines whether the engine is stalled; a second control device that stores engine stall information into the storage unit when the first determination device determines that the engine is stalled while the first control device is storing the vehicle information into the data storage device; and a second determination device that determines whether the engine starts. When the second determination device determines that the engine starts, and the engine stall information is stored in the storage unit, the first control device starts storing the vehicle information into the data storage device.

A method for determining causes of engine stop using ignition power monitoring may include performing ignition power holding determination to determine, in a state in which a vehicle is started and an engine is driven, whether the vehicle is in a key-on state, to which power is consistently applied, in order to hold the starting of the engine of the vehicle. The method also includes performing power-off recognition time comparison by comparing, when ignition power is turned off and the engine is stopped, a time required to recognize ignition power-off in an ECU (Electronic Control Unit) with a preset ignition power-off recognition time for failure determination. The method also performs a power abnormality determination by determining whether the engine is stopped due to ignition power failure when the time required to recognize the ignition power-off in the ECU is not greater than the preset ignition power-off recognition time.