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Display device for combined optical representation of actual engine and/or motor vehicle speed, has scales whose scalings are variable by considering proportionality between engine and vehicle speed, where representation of speed is changed
Display device for combined optical representation of actual engine and/or motor vehicle speed, has scales whose scalings are variable by considering proportionality between engine and vehicle speed, where representation of speed is changed
The device has a rotational speed scale (4) and a speed scale (6) whose relative scalings (15) are variable by considering proportionality between engine speed (U/Min) and vehicle speed (v) based on an actual transmission ratio (16). The proportionality exists during slip-free power transmission between the engine and a drive shaft (13) of a motor vehicle. The representation of the engine speed and/or the vehicle speed is changed when slip-free power transmission does not exist. The representation of the vehicle speed is stopped when the vehicle is in a standstill condition. An independent claim is also included for a method for optically representing actual engine speed and/or speed of a vehicle.
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