Abstract: A novel vehicle power supply system is suggested which receives its voltage supply from a starter/generator which can be used as a generator in normal operation and as a starter when starting, wherein the starter/generator is connected with a 24 volt ring mains as well as with a 24 volt battery via a pulse inverter and a 300 volt DC intermediate circuit and a bidirectional converter. Additional consumers can be supplied with higher voltages than 24 volts and electric control devices can be supplied with voltage, possible via additional converters, from the bidirectional push-pull converter and the 300 volt DC intermediate network. In addition, this vehicle power supply system contains a plug receptacle with a 220 volt 50 Hz voltage.

Abstract: A high-voltage insulator which is suitable for use in chambers carrying gas highly charged with solid particles and is used particularly in electrostatic filters used for cleaning an exhaust gas derived from internal combustion engines used to drive motor vehicles. The high-voltage insulator is columnar in structure, having shield-like ribs succeeding one another at intervals, adjacent to each of which in the insulator is one recess. With the remaining insulator parts having a smaller diameter, this recess forms a sharp edge, which defines discharge paths toward the flank of the shield-like ribs. Inside these paths, the insulator is kept free of soot coatings or conductive coatings, so that the insulator itself offers high resistance to leakage currents, which would cause insupportable power losses.

Abstract: To provide a dynamo electric machine, for combination, preferably, with a centrifugal circulating pump, having a rotor which is at least part-spherical, the stator is formed of edge-wound strip material, in which the stator part is a continuous strip of L-shape deformed strip, with notches (9') cut into the L prior to deformation, the bending edge (15) of the L changing throughout the length of the strip, uniformly, with uniform change of the spacing of the notches so that, as the strip is wound over a part-spherical form which defines an air gap between the rotor and stator, the width of the teeth between adjacent notches (9') will increase to define continuous through-slots (9) for the windings, and the bending corner (15) likewise will change from a position near the root of the notches (9') to a position within the solid portion of the second leg (18) of the L.

Abstract: Three rotors disposed in axial succession on a common shaft are mounted to cooperate with a common stator having an annular laminated core coaxial with the shaft on which a three-phase stator winding is wound. The rotors are of two kinds, the middle one being of one kind and the outer ones of the other kind. These two kinds of rotors are, namely, the laminated core kind having a short-circuited squirrel cage conductor system and the synchronous having shell-shaped or ring-shaped permanent magnets mounted on a soft iron yoke which is in turn carried by a pierced hub of nonmagnetizable material. The squirrel cage rotor or rotors provide high starting torque, and the synchronous rotors provide good synchronous torque and a synchronous nominal speed. When the synchronous rotor is in the middle, the stator core may be subdivided into three parts to facilitate cooling.

Abstract: A combined on-board electric network generator and heater for vehicles, having mounted in its housing an armature which supports at least one alternating current coil and, more particularly, three-phase current coils. The combined generator-heater has a drum-shaped rotor, driven by the engine of the vehicle. The housing of this unit is closed and encloses the rotor as well as the armature and is formed with fluid ducts. Within the housing, a cooling-air circulation is maintained which streams over the coils and rotors and cools them, transferring heat to heat exchange elements which form part of the housing. A cooling fluid circulates in the ducts in a loop through input and output ports. The loop closes upon itself outside of the housing. The cooling fluid circulation recovers heat losses in the generator and makes the heat available for heating the passenger compartment of a vehicle.

Abstract: An additional claw-pole rotor similar to that of the alternator of a motor vehicle and excited by a similar winding is mounted on the same shaft as the rotor of the alternator and is surrounded by a stator core carrying, instead of winding, a short circuiting ring at each end and having tubular armature rods built into the stator core which run from one short circuiting ring to the other. The short circuiting rings provide channels for a heat transfer liquid that communicate with the inside of the tubular rods so that induction currents in the armature rods will heat the heat transfer liquid that is circulated through the heater of the car. An additional slip ring is necessary for the exciter current of the heat generator which may be varied or regulated to control the amount of heat generated.

Abstract: To reduce the axial length of an alternator, so that it can be attached, for example, to the end wall (10) of an automotive engine having a stub shaft (11) projecting therefrom, a transmission housing, clutch housing, or the like, a support structure (22, 122) has ring-shaped axially extending portions (23, 45, 145) the outer ones of which retain the armature (12, 13) typically three phase, and the inner one retains the outer races of ball bearings (35, 36; 76a, 135, 136), the inner races of which are secured to axially inwardly extending portions (31, 131) of a claw pole rotor having claw poles rotating within the gap formed by a field structure (20, 120) and the stationary windings so that the ring-shaped axial inner projection (45, 145) of the support structure interengages and overlaps the axially extending inner projection (31, 131) of the claw pole structure, and the ball bearings are placed in essential alignment with the stator core and the field core, and positioned within two parallel planes (37, 38

Abstract: A battery-condition monitoring operation is performed by connecting a load resistor across the battery terminals for a time interval to draw a definite battery discharge current. A metering unit measures the voltage across the load resistor or that directly across the terminals of the battery. A timing switch sensible to the temperature of the load resistor automatically terminates the time interval, and a start switch is pressed to initiate the time interval; alternatively, the timing switch automatically initiates the measurement at successive time intervals. Latest at the end of the time interval, an arresting device prevents the metering unit from responding further to the metered signal, and the value most recently metered by the metering unit is persistently held, until the next such measurement operation, and constitutes an indication of the remaining capacity of the battery.

Abstract: A difference amplifier compares the sum of a signal corresponding to the voltage across the battery and a signal corresponding to the current through the battery to a reference signal. When the output of the difference amplifier indicates that the sum of the two signals is less than the reference signal, a limiter circuit responds to limit the current drawn from the battery by controlling a current regulator interconnected between the battery and its load. If desired, a temperature signal indicative of the battery of temperature can also be applied to the difference amplifier so that the point at which the regulation sets in varies as a function of temperature.

Abstract: A controlled switch 4 provides current pulses derived from a battery 3 to a motor 1, having a series field 2 under command of a control unit 8 which provides command pulses for repetitive closing of the controlled switch 4. Current through the motor is sensed by a sensing resistor 6 and connected to a safety circuit 9 which, upon sensing of current flow in the absence of a control pulse from the unit 8, disconnects current to the motor by opening a controlled switch 5. To distinguish between (a) current flowing from the battery 3 l and (b) circulating current flowing during pulse gaps in a free-wheeling diode 7 connected across the field and armature of the motor, voltage across the free-wheeling 7 is sensed, thereby effectively sensing the conduction state of the free-wheeling diode and, if the free-wheeling diode is conductive, disabling the safety circuit to prevent spurious operation thereof during flow of inductive, circulating current through the bypass or free-wheeling diode under normal operation.