In a hybrid vehicle, a hybrid type lubrication control valve which is a solenoid valve type turned on/off by electricity is used as a lubrication system component for circulating lubricating oil to a transmission and an engine clutch. A method includes measuring, by an engine clutch pressure sensor, first engine clutch engagement pressure in an off-state of the independent type lubrication control valve and second engine clutch engagement pressure in an on-state thereof; and determining, by the TCU, whether or not the independent type lubrication control valve is stuck, on the basis of a pressure difference between the first engine clutch engagement pressure and the second engine clutch engagement pressure. The method can diagnose a stuck state of the hybrid type lubrication control valve using hydraulic pressure for operating engine clutch engagement, before starting the vehicle.

Methods and systems are provided for on-board diagnostics of an exhaust gas recirculation (EGR) system of an engine coupled to a hybrid vehicle. In one example, a method may include, upon receiving an engine shut-down request, prior to engine spin-down, rotating the engine at an idling speed via an electric motor and carrying out diagnostics of the EGR system. EGR diagnostics may include estimating a ratio of accumulated difference between a measured EGR flow and an EGR limit to accumulated intake air flow, over a duration of time, and indicating EGR system degradation in response to the ratio being higher than a threshold.

Systems and methods for operating an engine and a driveline disconnect clutch are presented. In one example, a transient vehicle maneuver that may allow at least some air to be drawn into an oil pump pickup tube may be detected. Engine torque may be reduced and a pump output command may be increased responsive to the transient vehicle maneuver.

A method for controlling a hydraulic pressure refilling operation for an engine clutch of a vehicle includes determining whether the vehicle travels using power of a driving motor with an engine clutch maintained in a disengaged state, and upon determining that the vehicle travels using power of the driving motor with the engine clutch maintained in the disengaged state, determining whether loss of hydraulic pressure has occurred, and upon determining that loss of hydraulic pressure has occurred, controlling a hydraulic pressure refilling operation such that working fluid in a reservoir is supplied to the actuator with the engine clutch in an engaged state, and controlling the driving motor so that the driving motor outputs a compensated torque by compensating for an effect of a load torque, generated by a non-operating engine, on a torque of the driving motor.

A method for controlling a hydraulic pressure refilling operation for an engine clutch of a vehicle includes determining whether the vehicle travels using power of a driving motor with an engine clutch maintained in a disengaged state, and upon determining that the vehicle travels using power of the driving motor with the engine clutch maintained in the disengaged state, determining whether loss of hydraulic pressure has occurred, and upon determining that loss of hydraulic pressure has occurred, controlling a hydraulic pressure refilling operation such that working fluid in a reservoir is supplied to the actuator with the engine clutch in an engaged state, and controlling the driving motor so that the driving motor outputs a compensated torque by compensating for an effect of a load torque, generated by a non-operating engine, on a torque of the driving motor.

Systems and methods for random vehicle movement to prevent theft are disclosed. The vehicle system may automatically reposition to make it seem like the user is home and to reduce battery drain and flat spots on the tire. The system may randomize the start time based on the preferences of the user. At the randomly decided time, the vehicle may start up on its own and reposition itself. In addition, the system may learn a driving behavior pattern of the vehicle via machine learning based on driving behavior associated with the vehicle, such that the vehicle may perform vehicle movement based on the learned driving behavior pattern.

Systems and methods for random vehicle movement to prevent theft are disclosed. The vehicle system may automatically reposition to make it seem like the user is home and to reduce battery drain and flat spots on the tire. The system may randomize the start time based on the preferences of the user. At the randomly decided time, the vehicle may start up on its own and reposition itself. In addition, the system may learn a driving behavior pattern of the vehicle via machine learning based on driving behavior associated with the vehicle, such that the vehicle may perform vehicle movement based on the learned driving behavior pattern.

Methods and systems are provided for on-board diagnostics of an exhaust gas recirculation (EGR) system of an engine coupled to a hybrid vehicle. In one example, a method may include, upon receiving an engine shut-down request, prior to engine spin-down, rotating the engine at an idling speed via an electric motor and carrying out diagnostics of the EGR system. EGR diagnostics may include estimating a ratio of accumulated difference between a measured EGR flow and an EGR limit to accumulated intake air flow, over a duration of time, and indicating EGR system degradation in response to the ratio being higher than a threshold.

An electronic control unit (ECU) (10) for flexible replacement of a plurality of replaceable components (14a, 14b, 14c) in a vehicle is disclosed. The ECU (10) comprises a plurality of memory units (18a, 18b, 18c) for storing operational instructions associated with the plurality of replaceable components (14a, 14b, 14c) and a processor (12) comprising a plurality of processing cores (12a, 12b, 12c). The processor (12) is adapted to identify the operational instructions associated to each of the plurality of replaceable components (14a, 14b, 14c), classify the operational instructions associated to each of the plurality of replaceable components (14a, 14b, 14c) into a plurality of groups (20a, 20b, 20c) and allocate each processing core, of the plurality of processing cores (12a, 12b, 12c), to each group for executing operational instructions associated to each replaceable component in each group.

An electronic control unit (ECU) (10) for flexible replacement of a plurality of replaceable components (14a, 14b, 14c) in a vehicle is disclosed. The ECU (10) comprises a plurality of memory units (18a, 18b, 18c) for storing operational instructions associated with the plurality of replaceable components (14a, 14b, 14c) and a processor (12) comprising a plurality of processing cores (12a, 12b, 12c). The processor (12) is adapted to identify the operational instructions associated to each of the plurality of replaceable components (14a, 14b, 14c), classify the operational instructions associated to each of the plurality of replaceable components (14a, 14b, 14c) into a plurality of groups (20a, 20b, 20c) and allocate each processing core, of the plurality of processing cores (12a, 12b, 12c), to each group for executing operational instructions associated to each replaceable component in each group.