Engine speed indicator for a vehicle

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...

Reexamination Certificate

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Details

C340S439000, C340S438000

Reexamination Certificate

active

06888448

ABSTRACT:
The present invention relates to an engine speed indicator for a vehicle, which is driven by a combustion engine. The engine speed indicator comprises a first indicator arranged to show the actual member of revolutions of the engine and second indicator arranged to show at which number of revolutions or within which range of number of revolutions a minimal emission of at least one emission gas is obtained from the vehicle during operation of the combustion engine. The engine speed indicator also comprises a third indicator which is arranged to show an emission level of the emission gas at the actual value of the number of revolutions. A driver can hereby drive the vehicle in such a manner that the emissions of emission gases are substantially minimal.

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