Stepless transmission type power transmitting apparatus for use in vehicle

Abstract

Abstract PURPOSE:To control a value to be controlled to a desired value smoothly and promtly, by setting a reference value separately from the desired value, and executing feedback control of the value to be controlled considering the reference value as a desired value. CONSTITUTION:At a block 55, a desired revolutional speed Nin* on the input side is calculated on the basis of a throttle opening thetath. At a summing point 56, the deviation (Nin*-Nin) between the desired revolutional speed Nin* and the actual revolutional speed Nin on the input side detected by a CVT4 is calculated. At a block 57, a reference revolutional engine speed - Nin is calculated on the basis of the deviation (Nin*-Nin). At a summing point 58, the deviation (-Nin-Nin) is calculated and it is furnished to a flow control valve 30 via a feedback gain 59 and an amplifier 50 for the flow control valve. Resultantly, the flow rate Q from the flow control valve 30 to a servomotor on the input side of the CTV4 is changed and the speed ratio of the CVT4 and hence the actual revolutional speed Nin is changed. That is, the actual revolutional speed Nin is feedback controlled by considering the reference value - Nin as a desired value.

Inventors

• 👤 Takashi Shigematsu
• 👤 重松　崇
• 👤 Tomoyuki Watanabe
• 👤 智之 渡辺

Bibliographic Details