| 摘要 |
PURPOSE:To make a proper shift-up indication attainable all the time, by comparing the setting value, to be made larger as the air density is lower, with the actual value of an engine speed and, when the actual value is larger than the setting value, letting a device perform the shift-up indication. CONSTITUTION:A device bearing the above caption compares the speed detection value by an engine speed detecting device 1 with a speed setting value by a setting value generating device 2 by a comparing device 3. And, when the speed detection value is larger than the setting value, it outputs a signal, making a shift-up indicating device 4 of a lamp or a buzzer or the like perform a shift-up indication, from this comparing device 3. In this case, there is provided with an air density detecting device 5 which detects a degree of suction air density, and it is constituted so as to make the setting value to be generated at the generating device 2 larger the lower as the air density detection value is lower. With this constitution, a proper shift-up indication is made so as to be giveable all the time even at the time of driving on highland or the like. |
