Robert Boschgmbh

Harald Vogt

Hartmut Schumacher

Bert Wurst

Norbert Crispin

Rudolf Eisenbarth

A manufacturing process for an electronic device having a storage element, whereby, in various manufacturing stages, the device runs through testing stations. After passing through a testing station, information documenting the respective inspection step is stored in the storage element of the electronic device.

Manufacturing process for an electronic device

To provide for precise shifting of gears in automatic transmissions in dependence on vehicle speed and loading on the engine, a speed signal and a throttle position signal are applied to separate control stages one to control up-shifting and the other to control down-shifting; further, a separate kick-down switch is provided for rapid down-shifting. The control stages are so arranged that up-shifting is commanded in accordance with vehicle operating characteristics, but down-shifting is commanded only with a lag, or hysteresis, with respect to the vehicle speed, to prevent excessive shifting of the transmission. The shift control circuits may be either separate trigger circuits controlling up-shifting and down-shifting of the respective gear ranges, or may be separate networks processing the respective input signals (speed, engine loading) and providing output control signals to a shift control trigger circuit.

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Schwieberdingen, Germany

Harald Vogt