To provide a vehicular power transmission apparatus capable of performing an origin learning appropriately even in a case where the power source of a control device is turned off unintentionally in the middle of switching operating position of a transmission mechanism.SOLUTION: In a case where an operating position of a cam engagement member 102 is determined to be at an L4 L position, or an operating position of the cam engagement member 102 is determined to be in the middle of switching between the L4 L position and an H2 position, an electronic control apparatus 200 performs an origin learning with the operating position of the cam engagement member 102 defined as a first reference position P1, while in a case where the operating position of the cam engagement member 102 is determined to be between the H2 position and at a position where a transfer 22 is put in an H4A operating state or an H4 L operating state, the control apparatus performs an origin learning with the operating position of the cam engagement member 102 defined as a second reference position P2. Therefore, even in a case where a power source of the electronic control apparatus 200 is unintentionally turned off so that the operating position of the cam engagement member 102 cannot be accurately determined when the power is turned on, it is possible to perform an origin learning appropriately.SELECTED DRAWING: Figure 2
【課題】伝達機構の動作位置の切替途中に意図せず制御装置の電源がオフした場合においても適切に原点学習を行うことができる車両用動力伝達装置を提供する。【解決手段】電子制御装置200は、カム係合部材102の動作位置がL4L位置にあると判別、またはカム係合部材102の動作位置がL4L位置とH2位置との間の切替途中にあると判別したときには、カム係合部材102の動作位置を第1基準位置P1とした原点学習を行い、カム係合部材102の動作位置がH2位置とトランスファ22をH4A作動状態またはH4L作動状態にする位置との間にあると判別したときには、カム係合部材102の動作位置を第2基準位置P2とした原点学習を行う。このため、意図せず電子制御装置200の電源がオフして、電源がオンしたときにカム係合部材102の動作位置が正確にどこに位置しているか分からない場合でも、適切に原点学習を行うことができる。【選択図】図2
VEHICULAR POWER TRANSMISSION APPARATUS
車両用動力伝達装置
2020-07-27
Patent
Electronic Resource
Japanese