HYBRID AUTOMOBILE

PROBLEM TO BE SOLVED: To suppress the generation of a relatively large tooth-hitting noise when a play is squeezed, the play between a first spline of a stationary member and a second spline of an inner lace of a one-way clutch, when the revolution of an engine is stopped.SOLUTION: In a case where a...

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1. Verfasser: MAMADA YUSUKE
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To suppress the generation of a relatively large tooth-hitting noise when a play is squeezed, the play between a first spline of a stationary member and a second spline of an inner lace of a one-way clutch, when the revolution of an engine is stopped.SOLUTION: In a case where an engine revolution speed Ne reaches a threshold Nref2 or lower (S150) when a revolution of the engine is stopped, damper action torque Td is calculated using cam reactive force torque Tec and friction torque Tef of the engine, torque Tm1 of a motor MG 1, and a gear ratio ρ of a planetary gear (S170), and, if an absolute value of the damper action torque Td is larger than a threshold Tdref, raising-torque Tsp2 is adjusted (changed) so that the damper action torque Td is reduced to the threshold Tdref or smaller (S180, S190).SELECTED DRAWING: Figure 3 【課題】エンジンを回転停止させる際において、固定部材の第1スプラインとワンウェイクラッチのインナーレースの第2スプラインとのガタが詰まる際に比較的大きい歯打ち音を生じるのを抑制する。【解決手段】エンジンを回転停止させる際、エンジンの回転数Neが閾値Nref2以下に至ったときには(S150)、エンジンのカム反力トルクTecおよびフリクショントルクTefとモータMG1のトルクTm1とプラネタリギヤのギヤ比ρとを用いてダンパ作用トルクTdを計算し(S170)、ダンパ作用トルクTdの絶対値が閾値Tdrefよりも大きいときには、ダンパ作用トルクTdが閾値Tdref以下となるように持ち上げトルクTsp2を調節(変更)する(S180,S190)。【選択図】図3