JPH0254957U

JPH0254957U -

Info

Publication number: JPH0254957U
Application number: JP13393188U
Authority: JP
Priority date: 1988-10-13
Filing date: 1988-10-13
Publication date: 1990-04-20

Description

[Brief explanation of drawings]

第１図は本考案の一実施例における自動変速機
の制御装置の概略構成図、第２図は制御ユニツト
の処理を説明するためのフローチヤート図、第３
図は通常の変速モードにおける変速線図の例を示
す特性図、第４図はホールドモードにおける変速
線図の例を示す特性図である。３……自動変速機、４……ソレノイドバルブ、
６……制御ユニツト、９……ホールドスイツチ、
１０……車速センサ、１１……スロツトルセンサ
、１４……変速制御手段、１５……ホールドモー
ド手段、１６……ホールド禁止手段、１７……変
速段判別手段、１８……負荷検出手段。 FIG. 1 is a schematic configuration diagram of a control device for an automatic transmission according to an embodiment of the present invention, FIG. 2 is a flowchart for explaining the processing of the control unit, and FIG.
FIG. 4 is a characteristic diagram showing an example of a shift diagram in a normal shift mode, and FIG. 4 is a characteristic diagram showing an example of a shift diagram in a hold mode. 3... Automatic transmission, 4... Solenoid valve,
6...Control unit, 9...Hold switch,
10...Vehicle speed sensor, 11...Throttle sensor, 14...Shift control means, 15...Hold mode means, 16...Hold inhibition means, 17...Gear stage discrimination means, 18...Load detection means.

Claims

[Scope of utility model registration request]

Load detection means for detecting engine load in a control device for an automatic transmission equipped with a hold mode means for maintaining a gear position at a predetermined high speed gear corresponding to a hold mode in response to operation of a hold switch in a predetermined shift range. and a gear stage determining means that determines the gear stage when the hold switch is operated, and receives signals from the load detecting means and the gear stage determining means, and determines whether the engine load is equal to or higher than a predetermined value and the gear stage at that time is a predetermined low speed. A control device for an automatic transmission, comprising: hold prohibition means for prohibiting a shift to a high speed gear set by a hold mode means in the shift range when it is determined that the shift range is lower than the shift range.