JPS6114248U

JPS6114248U - automatic transmission

Info

Publication number: JPS6114248U
Application number: JP9958884U
Authority: JP
Inventors: 敏昭立野; 知之岩本; 滋樹福島
Original assignee: 三菱自動車工業株式会社
Priority date: 1984-06-30
Filing date: 1984-06-30
Publication date: 1986-01-27

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１〜１６図は本考案の一実施例としての自動変速装置
を示すもので、第１図はその全体構成図、第２図はその
シフトパターンを示す模式図、第３図はそのデューテイ
比特性を示すグラフ、第４図はそのクラッチェア圧の経
時変化を示すグラフ、第５図はそのエンジン回転薮およ
びクラッチ出力に回転数の経時変化を示すグラフ、第６
図はそのエンジンとクラッチ出力軸の回転数差の制御領
域を示すグラフ、第７〜９図はそれぞれその選択変速区
分において最適変速段を求める際用いられるグラフ、第
１０図はその車両発進時における各作動を示すグラフ、
第１１〜１６図はそれぞれの制御プログラムのフローチ
ャートである。３０・・・エンジン、３１・・・クラッチ、３・・・変
速機、３３・・・入力軸、３４・・・燃料噴射ポンプ、
３５・・・ラック、３６・・・リンク系、３７・・・ア
クセルペダル、３８・・・電磁アクチュエータ、３９・
・・回転センサ、４０・・・フライホイール、４１・・
・クラッチ板、４２・・・アクチュエータとしてのエア
シリンダ、４３・・・クラッチ断接センサ、４４・・・
出力軸、４５・・・クラッチ回転数センサ、４６・・・
エア室、４７・・・エア通路、４８・・・エアタンク、
４９・・・開閉弁としてのカット弁、５０・・・パルス
電磁弁、５１・・・ギヤ位置切換手段としてのギヤシャ
フトユニット、５２・・・クラッチ制御手段、噛合判別
手段、切換制御手段、半クラッチ復帰手段およびエンス
ト防止手段としてのコントロールユニット、５３・・・
電磁バルブ、５４・・・チェンジ′レバー、５５・・・
変速段選択スイッチ、５６・・・ギヤ位置センサとして
のギヤ位置スイッチ、５７・・・出力軸、５８・・・車
速センサ、５９・・・Ａ／Ｄ変換器、６０・・・負荷セ
ンサ、６１・・・ブレーキペダル、６２・・・ブレーキ
センサ、６３・・・スタータ、６４・・・タータリレー
、６５・・・マ箔クロコンピュータ、６６・・・マイク
ロプロセッサ（ＣＰＵ）、６７・・・デューティ比、
再デューティ比設定手段としてのメモリ、６８・・・イ
ンターフェース、６９・・・インプットボート、７０・
・・クラッチェアセンサ、７２・・・エアセンサ、７４
・・・アウトプットポート、７５・・・ウオーニングラ
ンプ、７６・・・クラッチ摩耗ランプ、α・・・デュー
ティ比、β・・・再デューテイ比。Figures 1 to 16 show an automatic transmission as an embodiment of the present invention. Figure 1 is its overall configuration, Figure 2 is a schematic diagram showing its shift pattern, and Figure 3 is its duty ratio. Graph showing the characteristics, Figure 4 is a graph showing changes in clutch chair pressure over time, Figure 5 is a graph showing changes in engine speed and clutch output over time, and Figure 6 is a graph showing changes over time in engine speed and clutch output.
The figure is a graph showing the control range of the rotational speed difference between the engine and the clutch output shaft, Figures 7 to 9 are graphs used to find the optimum gear in each selected gear shift category, and Figure 10 is the graph used when starting the vehicle. Graphs showing each operation,
11 to 16 are flowcharts of the respective control programs. 30... Engine, 31... Clutch, 3... Transmission, 33... Input shaft, 34... Fuel injection pump,
35... Rack, 36... Link system, 37... Accelerator pedal, 38... Electromagnetic actuator, 39...
...Rotation sensor, 40...Flywheel, 41...
・Clutch plate, 42...Air cylinder as actuator, 43...Clutch connection/disconnection sensor, 44...
Output shaft, 45...Clutch rotation speed sensor, 46...
Air chamber, 47... Air passage, 48... Air tank,
49...Cut valve as opening/closing valve, 50...Pulse solenoid valve, 51...Gear shaft unit as gear position switching means, 52...Clutch control means, engagement determination means, switching control means, half A control unit as a clutch return means and an engine stall prevention means, 53...
Solenoid valve, 54...Change' lever, 55...
Gear position selection switch, 56... Gear position switch as a gear position sensor, 57... Output shaft, 58... Vehicle speed sensor, 59... A/D converter, 60... Load sensor, 61 ...Brake pedal, 62...Brake sensor, 63...Starter, 64...Target relay, 65...Mafoil computer, 66...Microprocessor (CPU), 6 7...Duty ratio,
Memory as re-duty ratio setting means, 68... Interface, 69... Input board, 70.
...Crutch chair sensor, 72...Air sensor, 74
...Output port, 75...Warning lamp, 76...Clutch wear lamp, α...Duty ratio, β...Re-duty ratio.

Claims

[Scope of utility model registration request]

an actuator that connects and disconnects a clutch between an engine and a transmission of a vehicle, a gear selection switch that outputs a gear shift signal corresponding to a target gear in response to an operation by a driver, and a gear selection switch that changes the engagement mode of the transmission. A gear position switching means for switching to a target gear position based on a series of signals, a gear position sensor that outputs a gear position signal corresponding to the gear position of the transmission, and an opening/closing means for supplying and discharging working air to and from the actuator and tuator. and a clutch control means for operating the opening/closing means, a load sensor for outputting a load signal of the engine, a rotation sensor for outputting a rotational speed signal of the engine, and a rotational speed signal for the output shaft of the clutch. a clutch rotation sensor; an engagement determining means for determining the identity of the target gear position and a gear position of the transmission and outputting an engagement suitability signal; a clutch engagement/disengagement sensor for outputting an engagement/disengagement signal for the clutch; and the engine. When the rotational speed signal is within the stop range and an engagement/non-engagement signal is received, the gear position switching means and the clutch control means are started to match the gear position of the transmission to the target gear position during the clutch engagement/disengagement operation. a switching control means to operate;
The opening/closing means includes a pulse solenoid valve that releases air from the air chamber to the atmosphere at a time ratio corresponding to the duty ratio of the pulse signal, a vehicle speed sensor that outputs a vehicle speed signal of the vehicle, and a pulse signal that corresponds to the load signal. a duty ratio setting means for setting a duty ratio of the vehicle; and when the vehicle speed signal is lower than a set value and a clutch disengagement and engagement appropriate signal is received, upon receiving the load signal, the disengaged clutch is returned by a predetermined amount;
Next, switching control means returns the clutch to a half-clutch state based on the duty ratio of the pulse signal, and thereafter operates the gear position switching means and the clutch control means to start the clutch so as to connect the clutch, and the switching control means controls the engine rotation. an engine operating means operated in response to an engine rotation increase/decrease signal;
When receiving the gear shift signal, the gear shift discrimination means outputs a discrimination signal by classifying the signal into one of a specified gear, a selected gear, and a reverse gear; gear setting means for determining an optimal target gear based on the vehicle speed signal, load signal, and engine rotational speed signal and outputting a gear shift signal thereof; and a classification signal corresponding to the selected gear or specified gear. In addition to this, when an engagement/non-engagement signal is received, the transmission is set to the target gear during the clutch engagement/disengagement operation, and when the engagement/disengagement signal is received in addition to the classification signal corresponding to the reverse gear, the transmission is set to the target gear position during the clutch engagement/disengagement operation. In the meantime, set the gear position of the transmission to neutral, and after each of these processes, set the gear position to neutral. switching control means for outputting a engine rotation increase/decrease signal to shift the engine operating means, gear position switching means, and clutch control means so as to match the rotations of the engine and the output shaft of the clutch; and a switching control means for the starting operation. engine stall prevention means for causing the operation of the switching control means for the starting operation or the operation of the switching control means for the gear shifting operation after the clutch is disengaged when the engine rotation speed signal is equal to or lower than the engine stall rotation speed; The engine stall prevention means selects the engine stalling rotational speed at the time of starting as the engine stalling rotational speed when the load signal from the load sensor is output, and selects the engine stalling rotational speed at the time of stopping when the load sensor does not output the load signal. An automatic transmission device configured to do so, wherein the engine stall rotational speed at the time of starting is set to be smaller than the engine stalling rotational speed at the time of stopping the vehicle.