| 摘要 |
To enable an engine rotational speed display device to display an engine rotational speed without causing a sense of incongruity by following changes in the engine rotational speed at times of sharp variations. An engine rotational speed display device includes: a rotational speed sensor (2) for detecting a crankshaft rotational speed pulse according to rotation of a crank pulse rotor (1) provided to a crankshaft of an engine; an engine rotational speed calculating means (7) for calculating an engine rotational speed by a moving average of a detected value of the crankshaft rotational speed pulse; and a display means (5) for displaying the engine rotational speed on a meter by electrical processing. When the crankshaft rotational speed pulse is not detected in a detection time equal to or more than a predetermined value, the engine rotational speed calculating means (7) determines that the engine rotational speed is "0" without calculating the engine rotational speed by the moving average, and the engine rotational speed of "0" is displayed on the meter. |
