| 摘要 |
PURPOSE:To control engine revolution by outputting warning after detecting the lower limit of oil level with an oil level sensor and over heat of engine with a temperature sensor, accordingly making at least part of the cylinders of an engine to misfire. CONSTITUTION:The overheat of an engine 38 makes the contact 40a of a temperature sensor 40 on followed by alarming a buzzer 42 and an OR circuit 84 closes an analog switch 82. Consequently, the rotation of the engine more than specified speed makes the charging side voltage of a condenser 76 to be high and to stop the ignition of a thyrister 22 and makes a sparkling plug 26 to misfire followed by decreasing the speed of the engine 38. When the oil level once reaches a lower limit, a holding circuit 66 keeps a red lamp 54 lighting, the OR circuit 84 closes the analog switch 82 and thus the engine speed 38 is controlled. |
