| 摘要 |
PURPOSE:To correct power down at highland running, in an engine provided with an altitude correction device in which an air quantity is adjusted by a pressure sensing bellows, by relating a variable resistor for adjustment of ignition timing to the pressure sensing bellows. CONSTITUTION:At level land running under high atmospheric pressure, a pressure sensing bellows 2 is not in an extended state, and a slider 8 is placed in a position of the largest resistance value to cause a resistance value maximum between a terminal 15 of CDI generating coils 10, 11 and terminal 16 of a CDI unit 12, then a device is operated in normal ignition timing. As a vehicle is driven toward highland, the atmospheric pressure goes down, and the pressure sensing bellows 2 is extended to increase a feed quantity of air to a carburetor, while the resistance value is decreased to advance the ignition timing. In this way, output power down of an engine can be corrected at highland running. |
