Abstract:
A multi-voltage electrical system of a motor vehicle includes first and second subsystems operable at operating voltages, where a current is selectively and alternatively feedable from the first subsystem into the second subsystem and from the second subsystem into the first subsystem, and an electrical consumer is coupleable to and decoupleable from the first subsystem. A method for operating the system includes, responsive to a failure or lack of an attenuator, implementing a special operating mode in which negative and positive sudden load variations caused by coupling or decoupling of the electrical consumer is counteracted by, respectively, feeding current from the second subsystem into the first subsystem or vice versa, in each case over a respective feed time period.
Abstract:
There is provided a starting system for reliably starting a turbine engine, the system including first and second circuits connected in parallel and arranged between a battery of the engine and a DC starter of the engine, the first circuit including a DC-DC converter connected in series with a first switch and the second circuit including a second switch; a sensor configured to sense a speed of rotation of a compressor of the engine; a sensor configured to sense a temperature at an inlet to a free turbine of the engine; and a control circuit configured to control the first and second switches as a function of information supplied by the sensor configured to sense the speed of rotation of the compressor and by the sensor configured to sense the inlet temperature of the free turbine.
Abstract:
A hybrid vehicle control device is provided for controlling a drive system in a hybrid vehicle. The hybrid vehicle control device is provided with a hybrid control module that controls an operation start timing of a DC/DC converter at vehicle startup. When an ignition switch is pressed, after connecting a high power relay that is interposed between the motor/generator and the high power battery, the hybrid control module starts operation of the DC/DC converter upon determining that the outputtable electric power by the high power battery is a prescribed value or greater.
Abstract:
A engine control unit comprises: a three-phase bridge circuit that has a first end connected to the first end of the first load and a second end connected to a ground, the three-phase bridge circuit performing commutation control on an alternating-current power supplied from the motor generator or driving the motor generator; a DC-DC converter connected between the first end of the three-phase bridge circuit and a second end of the control switch; a diode that has an anode connected to the battery connecting terminal and a cathode connected to the second end of the control switch; a voltage detecting circuit that detects a voltage of the battery connecting terminal; a first switch element connected between a second end of the coil and the ground; a second switch element connected between a second end of the first load and the ground; and a control circuit.
Abstract:
An in-vehicle solar system that supplies electric energy from a solar battery module to an electric device such as a secondary battery, a load, and the like includes a capacitor that accumulates electric energy from the solar battery module and supplies the accumulated electric energy to the electric device.
Abstract:
An apparatus for starting an engine of a mild hybrid vehicle is disclosed having low and high voltage starting devices and controlled by an electronic controller. The electronic controller is operable to use the high voltage starting device as a motor to crank the engine whenever possible so as to partially discharge a high voltage battery and facilitate the increased use of automatic stopping and starting of the engine.
Abstract:
A vehicle includes an engine, a transmission, and an electrical system. The electrical system has an auxiliary starter motor connected to a crankshaft of the engine, a high-voltage motor generator unit (MGU) connected to the crankshaft, and a controller. Execution of instructions by a processor causes the controller to determine a set of powertrain conditions in response to a requested autostart of the engine, e.g., state of charge and/or power limits of a high-voltage energy storage system (HV-ESS), torque limits of the MGU, and/or a crank angle of the engine. The controller determines whether the requested autostart may not succeed relative to a time or noise standard using the set of powertrain conditions, and transmits an autostart command to the MGU when the requested autostart may succeed. The controller transmits the autostart command to the auxiliary starter motor when the requested autostart will not succeed.
Abstract:
The invention relates to a method for securing the operation of a voltage-holding device used for starting or restarting the internal combustion engine of a vehicle, the voltage-holding device being electrically connected by a multiplex network to an electric machine and to a monitoring computer. According to the method, the voltage-holding device can be activated only if it has previously received an activation authorization message, which can be a starting or restarting message, sent by the computer to the electric machine and to the voltage holding device, or a message transmitted by the electric machine indicating that it is about to restart the internal combustion engine.
Abstract:
Methods and apparatuses for voltage dip stabilization in a motor vehicle are described herein. The apparatus of one embodiment includes a first connection for connecting the apparatus to an energy source, in particular to a vehicle battery and a second connection for connecting the apparatus to a starting apparatus of a motor vehicle. The apparatus also includes a current-limiting module for limiting a starter current, a control unit for driving the current-limiting module, and at least one starting process detector, which is connected to the control unit, for identifying a starting process. The control unit, on the basis of a starting process signal from the starting process detector, prompts the current-limiting module to carry out a starter current-limiting measure.
Abstract:
A control unit of a vehicle electric power supply apparatus controls an opening and closing unit to set a switch to an OFF state and a voltage detection unit to detect an output voltage of a first power source and an output voltage of a second power source when a second electric load is to be driven, and the control unit inhibits driving of the second electric load when the absolute value of the difference between the output voltage of the first power source and the output voltage of the second power source detected by the voltage detection unit is a predetermined first threshold value or less over a predetermined length of time.