Robert Boschgmbh

Walter Kohl

Rainer Mittag

Friedhelm Meyer

Helmut Suelzle

Guenter Schramm

Karl Nagel

Gerhard Conzelmann

Guenter Nasswetter

Edgar Kuhn

Gunter Schramm

Matthias Hoeber

Klaus Ries-Mueller

Richard Schleupen

Istvan Ragaly

Willi Gansert

Wolfgang Jacob

Alexander Shendi

Thomas Koss

Burkhard Hiller

Hans-Peter Groeter

Harry Slansky

Rolf Wenniger

Lothar Jakobi

Kai-Uwe Strasser

Wenzel Novak

The method of transmitting data as a sequence of high bits and low bits over a transmission line from a transmitting device to a receiving device includes transmitting synchronization signals over the transmission line and transmitting one and only one high bit or one and only one low bit over the transmission line at an end of each synchronization signal. When the predetermined voltage levels for the high bit, low bit and synchronization signals are different from each other, the method is implemented in an especially simple manner. The interfaces for the receiving and transmitting devices for performing the method are also described.

Data synchronisation process, and transmission and reception interfaces

According to the invention, an apparatus for automatically detecting a motor vehicle's generator type is proposed, in which the characteristic voltage course is measured at a terminal (DF) of the generator ( ) and compared with values stored in memory. Via an interface ( ), a control unit ( ) is connected to the controller ( ) or generator ( ) and evaluates the voltage change (&dgr;DF) upon a load change. To that end, the voltage at the terminal (DF) is measured and evaluated before the electrical load ( ) is turned on, after it is turned, and after it is turned off. By means of this apparatus, advantageously not only the generator type (A, B) but also incorrect installations can be ascertained.

Device for automatically detecting a generator type of a motor vehicle

The electrical machine, in particular a three-phase generator, has a stator (,) secured in a housing (,) and a claw pole rotor (,) which is secured on a shaft (,) and has an exciter winding (,). Between the claw pole rotor and a bearing plate (,) that closes off the housing, there is an electrical repeater (,) for exciting the exciter winding (,). The primary winding (,) is disposed along with the core (,) on the bearing plate (,). The primary and secondary windings (,) of the repeater (,) are disposed between the bearing plate (,) and the claw pole rotor system (,); the primary winding (,) is disposed in a stationary core (,), and the secondary winding (,) is disposed in a rotating core (,), and the windings are coupled via an air gap (,).

Alternator with exciting means arrangement

A device for voltage regulation for a generator driven by an internal combustion engine is described in which the voltage regulator is equipped with a load response travel function (LRF), which prevents a rapid rise in the exciting current when a powerful electric consumer is turned on. By means of a suitable trigger circuit which evaluates the engine rpm and thus the generator rpm, the load response travel function is blocked during travel when rpm values are falling, so that in this case, the voltage incursions that occur during an active load-response function are maximally averted.

Device for voltage supply with suppression of load response function during reduction of rpm

Device for setting the output voltage in a three-phase alternator

Circuit arrangement for starting detection of three-phase generator

The battery charging apparatus includes a generator, main voltage regulator, an auxiliary voltage regulator, at least one consuming device and a protective circuit having circuit portions for recognizing and signalling faults via a charge control lamp. The generator output voltage is rectified with rectifier bridges containing Zener diodes. Voltage comparison to threshold values and logic circuitry for processing the comparison results are used to determine the presence of faults in the operation of the battery charging apparatus. The fault detection device detects conduction defects in the main voltage regulator and/or interruption in the generator excitation circuit. The logic circuitry determines whether simultaneously both a supplied voltage exceeds a threshold value and the main voltage regulator is turned on longer than a predetermined time interval to indicate its continuous operation. After a fault is detected voltage regulation is performed by the auxiliary voltage regulator until the fault is eliminated so that the rectifier bridges are not destroyed. The battery charging apparatus described is particularly suitable for use in motor vehicles.

Battery charging apparatus with fault detection

Regulatable alternating device with means for determining final

Voltage-regulator for regulating the voltage of an alternator

Voltage regulator for an alternator and method of regulating voltage

The apparatus for controlling an output voltage of a generator of an internal combustion engine having a starter device, includes a charge control signaling device, an excitation coil for the generator and a voltage regulator controlling an excitation current in the excitation coil and an excitation current limiting device for limiting the excitation current during a predetermined starting phase (.DELTA.t1 ) connected to the voltage regulator. The excitation current limiting device detects whether the engine is in a starting phase. If the engine is in a starting phase, the excitation current limiting device reduces the excitation current so that a voltage is produce at generator terminal D+ which permits no load current and simultaneously guarantees that the charge control signalling device is shut off. After ending of the starting phase the excitation current limiting device is shut off and the excitation current is increased to its standard value, which results in a generator output voltage which is above the power supply voltage that charges the battery.

Apparatus and method for regulating a generator of an internal

The method of regulating a voltage produced by a generator with a voltage regulator according to a battery charge state includes providing a controller containing a clock and a memory able to store battery and power supply reference data, battery voltage and generator rotation speed; maintaining a regulated voltage produced by the generator at a normal value (U.sub.R) during a first time interval (t1); measuring a battery voltage (U.sub.B) and decreasing the regulated voltage (U.sub.R) during a second time interval (t2); determining the battery charge state from the measured battery voltage (U.sub.B) according to the stored battery- and power supply-reference data; and, when the battery charge state is determined to be unsatisfactory, determining an additional time interval (t4) with the controller and an amount of increase of the regulated voltage (U.sub.R) sufficient to obtain a satisfactory battery charge state during the additional time interval (t4) without damaging the voltage sensitive components of the voltage regulator; and increasing the regulated voltage above the normal value (U.sub.R) by the thus determined amount and turning on no voltage-critical consuming device during the additional time interval (t4). A voltage regulator including the controller is also described.

Method and apparatus for voltage regulation depending on battery charge

A device for supplying voltage to at least one consuming device in a motor vehicle including two parallel generators, two voltage regulators associated with each of the generators, two batteries each connected with one of the voltage regulators, a starter switch connected with at least one of the batteries and the voltage regulators, a charge control lamp for signalling connected with the starter switch and the voltage regulators, switching device for electrically connecting and disconnecting the consuming device or devices, and devices for controlling the voltage regulators so that during starting the charge control lamp indicates starting and the switching device disconnects the consuming devices and if a defect occurs in either generator-voltage regulator system, the charge control light lights and the consuming device or devices is (or are) supplied with current, even if, for example, one of the generators fails. The device for supplying voltage advantageously includes a switch device having four diodes, the anodes of two diodes (D1,D2) being connected with each other and the charge control lamp and the cathodes of the two diodes (D1,D2) being each connected to a different voltage regulator, and the cathodes of the other two diodes (D3,D4) being connected with each other and the switching device (13).

Device for supplying voltage in a motor vehicle having parallel

A generator having an exciting winding and a standard load associated with a standard exciting current in the exciting winding can be controlled by a voltage regulator which adjusts an exciting current in the exciting winding and a temperature measurement device in a predetermined location in the generator and/or a voltage regulator associated with the generator, which is connected to the voltage regulator, advantageously via a microprocessor device or a pulse duration modulation circuit connected to the final regulating stage of the voltage regulator for gating the exciting current. So that the generator can be dimensioned to operate above its maximum rated temperature and can be operated in a superexcited state, the method of controlling the generator includes the steps of increasing the exciting current in the exciting winding beyond the standard exciting current to operate the generator at a higher load than the standard load; measuring a temperature T.sub.G at a predetermined location, advantageously in the generator, with the temperature measurement device; determining an allowed limiting temperature T.sub.GMAX at the predetermined location; lowering the exciting current, I.sub.Err, when the temperature T.sub.G is greater than the allowed limiting temperature T.sub.GMAX and maintaining the output power as high as possible without exceeding the allowed limiting temperature.

Apparatus and method for controlling the output power of a generator to

An electrical control system for an electrically heated window in a motor vehicle has a voltage source including a generator, a voltage regulator for regulating a generator output voltage, a transformer switched between the generator and a heating window, the generator output voltage being increased before supplying to the heatable window, and a unit for measuring a temperature of the transformer and interrupting a communication between the transformer and the voltage source in the event of exceeding an adjustable limiting temperature.

Electrical control system for an electrically heated window in motor

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Bietigheim, Germany

Walter Kohl