MULTISTAGE TRANSMISSION

• Main Authors: MORIMOTO TAKASHI, OITA SHINJI, AOKI TOSHIHIKO, KATO HIROSHI, MIYAZAKI TERUBUMI, MORISE MASARU, KATO TAKAYOSHI
• Format: Patent
• Language: English; Japanese
• Published: 09.11.2015
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

PROBLEM TO BE SOLVED: To further improve fuel consumption, drivability, shifting performance, and durability of engagement elements in a vehicle loading a multistage transmission.SOLUTION: An automatic transmission 20 includes a single pinion-type first planetary gear 21, a single pinion-type second planetary gear 22, a single pinion-type third planetary gear 23, a single pinion-type fourth planetary gear 24, clutches C1-C4, and brakes B1, B2, and the first to tenth forward gear stages and a reverse gear stage are formed by engaging three of the clutches C1-C4 and the brakes B1, B2, and releasing the remaining three of them. 【課題】多段変速機が搭載される車両の燃費、ドライバビリティ、変速性能および係合要素の耐久性をより向上させる。【解決手段】自動変速機２０は、シングルピニオン式の第１遊星歯車２１と、シングルピニオン式の第２遊星歯車２２と、シングルピニオン式の第３遊星歯車２３と、シングルピニオン式の第４遊星歯車２４と、クラッチＣ１〜Ｃ４と、ブレーキＢ１およびＢ２とを含み、クラッチＣ１〜Ｃ４、ブレーキＢ１およびＢ２のうち、何れか３つを係合させると共に残余の３つを解放させることにより前進第１速段から前進第１０速段および後進段を形成する。【選択図】図１