| 摘要 |
PURPOSE:To prevent the occurrence of a frequent shift during control of constant speed running and to provide an enough drive force by effecting a shift in a way that when constant speed running is performed through operation of a constant speed running means, a gear speed having a change gear ratio narrower than that when constant speed running is not effected is selected. CONSTITUTION:When constant speed running is controlled, the gear speed train of a forward eighth speed containing all forward gear speeds indicated on a table is set, and based on a running condition, a shift to a given gear speed selected from the gear speeds is effected. Thus, in this case, it is clear from the table that a width between the second speed and a 2.5-th speed is approximate 1.3, a width between a third speed and a 3.2-th speed is approximate 1.1, a width between a 3.2-th speed and a 3.5-th speed is approximate 1.2, and a width between a 3.5-th speed and a fourth speed is approximate 1.1. The width of a gear change ratio when constant speed running is controlled is narrower than that when constant speed running is not controlled, and further various drive forces are provided. A drive force obtained at the gear speed is a drive force suitable for running resistance at a current point of time in relation to a set car speed. |
