Constant speed running device for vehicle

Abstract

Abstract PURPOSE:To ensure stable constant speed running even on a down-hill by providing a change means increasing a gear change ratio when vehicle speed is increased with a throttle valve fully opened whereby prohibiting the change gear ratio from being reduced when the same is increased until the opening of the throttle valve becomes equal to or more than a predetermined value. CONSTITUTION:When vehicle speed is increased with a throttle valve M3 fully opened, a change gear ratio is increased by a gear change ratio chnaging means M5. This causes the engine braking of an engine M2 to be sufficiently effected. Then, a gear change reset prohibition means M6 has a transmission M1 prohibited a gear change ratio until the opening of the throttle valve M3 becomes equal to or more than a predetermined value. Therefore, a vehicle keeps up being braked sufficiently even if vehicle speed becomes a predetermined value. This constitution ensures stable constant running even on a down- hill under a high tail wind.

Inventors

• 👤 Yasuhiko Mishio
• 👤 靖彦 三塩
• 👤 Hidetoshi Shimizu
• 👤 志水　英敏

Bibliographic Details