| 摘要 |
Operation of a second or additional engine is initiated based on throttle position, vehicle speed and output level of the operating engine or engines. A second or additional engine is stopped based on throttle position and operation of the first engine when the second or additional engine has been idling for a predetermined period of time. Idling of an engine is started or stopped based on various conditions of the vehicle, such as battery voltage, ambient air temperature, brake cylinder pressure, operator input, battery charging current, and direction input.
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