Device for producing an optical or acoustic shift instruction
First Claim
1. In a device for producing an optical or acoustic shift instruction in which a speed-of-rotation signal is fed to a first threshold switch for connecting an upshift signal indicator and to a second threshold switch for connecting a downshift signal indicator, the device being adapted to cooperate with a gas pedal of a vehicle, the improvement comprisingan AND gate arranged behind the first threshold switch,a gas-pedal position switch being connected to said AND gate at an input side of the latter such that when the gas pedal is depressed only slightly it is connected to the upshift signal indicator, andmeans comprising a third threshold switch in parallel to the two other said threshold switches, being connected directly with said upshift signal indicator and for becoming conductive when the maximum permissible speed of rotation is reached.
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Accused Products
Abstract
A device for producing a shift instruction has three threshold switches (6, 7, 12) which are dependent on the rpm (speed of rotation). The first threshold shift (6) is connected via an AND gate (5) to an upshift signal indicator (9). This AND gate is conductive only when the gas pedal (1) is depressed less than 20% and the speed threshold of the first threshold transmitter (6) is reached. If the gas pedal (1) is depressed further, the upshift signal indicator (9) only lights up when the speed threshold of the third threshold switch, namely the maximum permissible speed of rotation is reached. The downshift signal indicator (11) lights up when the speed of rotation of the engine drops below the threshold of the second threshold switch (7). By this development shift instructions are given which sufficiently take into account the engine power of the vehicle without the necessity of measuring this engine power.
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Citations
7 Claims
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1. In a device for producing an optical or acoustic shift instruction in which a speed-of-rotation signal is fed to a first threshold switch for connecting an upshift signal indicator and to a second threshold switch for connecting a downshift signal indicator, the device being adapted to cooperate with a gas pedal of a vehicle, the improvement comprising
an AND gate arranged behind the first threshold switch, a gas-pedal position switch being connected to said AND gate at an input side of the latter such that when the gas pedal is depressed only slightly it is connected to the upshift signal indicator, and means comprising a third threshold switch in parallel to the two other said threshold switches, being connected directly with said upshift signal indicator and for becoming conductive when the maximum permissible speed of rotation is reached.
Specification