JPS59176119A - 4-wheel-drive car - Google Patents

4-wheel-drive car

Info

Publication number
JPS59176119A
JPS59176119A JP58048472A JP4847283A JPS59176119A JP S59176119 A JPS59176119 A JP S59176119A JP 58048472 A JP58048472 A JP 58048472A JP 4847283 A JP4847283 A JP 4847283A JP S59176119 A JPS59176119 A JP S59176119A
Authority
JP
Japan
Prior art keywords
wheel drive
speed change
wheel
shift
detector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP58048472A
Other languages
Japanese (ja)
Other versions
JPH0463266B2 (en
Inventor
Katsuhiko Taniguchi
勝彦 谷口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzuki Motor Corp
Original Assignee
Suzuki Motor Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP58048472A priority Critical patent/JPS59176119A/en
Publication of JPS59176119A publication Critical patent/JPS59176119A/en
Publication of JPH0463266B2 publication Critical patent/JPH0463266B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/12—Conjoint control of vehicle sub-units of different type or different function including control of differentials
    • B60W10/14—Central differentials for dividing torque between front and rear axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
    • B60W30/18—Propelling the vehicle
    • B60W30/1819—Propulsion control with control means using analogue circuits, relays or mechanical links

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Control Of Fluid Gearings (AREA)
  • Control Of Transmission Device (AREA)

Abstract

PURPOSE:To obtain the same running feeling in both 2- and 4-wheel drives in a 4-wheel drive car with a 2-wheel drive switching mechanism by detecting both the drives and controlling speed change based on the speed change characteristics. CONSTITUTION:A car speed detector 21, throttle degree of opening detector 22, and a switching operation detector 23 that checks 2- or 4-wheel drive are provided. These signals 21a to 23a are input to a microcomputer 24. The microcomputer 24 reads speed change characteristics that depend upon the drive status from these input signals 21a to 23a and outputs a speed change command signal A based on the stored speed change characteristics. In addition, the shift valve of an auxiliary speed changer 2 is operated and up shift or down shift is automatically performed. As a result, the same running feeling can be obtained in 2- and 4-wheel drives.

Description

【発明の詳細な説明】 本発明は四輪駆動車に関するもので、詳しくを は二輪駆動切換機構＼有する四輪駆動車に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a four-wheel drive vehicle, and more particularly to a four-wheel drive vehicle having a two-wheel drive switching mechanism.

従来から、二輪駆動車においては、車速およびスロット
ル開度を検出し、その信号をマイクロコンピュータ等の
変速機制御装置に入力させ、車速およびスロットル開度
が設定値に達すると、変速機にアップシフトまたはダウ
ンシフトラ指令して変速機を制（Ｉｌｌする自動変速機
を備えたものがある。Traditionally, in two-wheel drive vehicles, the vehicle speed and throttle opening are detected, the signals are input to a transmission control device such as a microcomputer, and when the vehicle speed and throttle opening reach a set value, the transmission upshifts. Alternatively, there are automatic transmissions that issue a downshift command to control the transmission.

ところで、四輪駆動車は、悪路での走破性に優れ、強力
な登板力ｂ″−得られる一方、平坦な道路ではいずれか
のタイヤｂ″−スリップすることによる駆動力損失ｂ′
−避げられない。そこで、このような問題を解消するべ
く、二輪駆動切換機構を備えた四輪駆動車が提供されて
いる。By the way, four-wheel drive vehicles have excellent traversal performance on rough roads and can obtain a strong pitching force b'', but on a flat road there is a loss of driving force b' due to one of the tires b'' slipping.
-Unavoidable. Therefore, in order to solve this problem, four-wheel drive vehicles equipped with a two-wheel drive switching mechanism have been provided.

そこで、このような四＠駆動車に上記した自動変速機を
単に適珀＼させようと−「ると、二輪、駆動の際と四輪
駆動の際には各種特性が異なるため、走行フィーリング
に大きな差を生じる。Therefore, when trying to simply adapt the above-mentioned automatic transmission to such a four-wheel drive vehicle, the driving feeling differs due to the different characteristics between two-wheel drive and four-wheel drive. It makes a big difference.

本発明の目的は、このような問題点に鑑みて、二輪駆動
、四輪駆動の区別なくは゛ぼ同一の走行フィーリングを
得ることのできる四輪駆動車を提供することにある。SUMMARY OF THE INVENTION In view of these problems, an object of the present invention is to provide a four-wheel drive vehicle that can provide almost the same driving feeling regardless of whether the vehicle is two-wheel drive or four-wheel drive.

この目的な達成するため本発明では、二輪駆動状態か四
輪駆動状態かを検出し、変速機制御装置によって、それ
らの各状態に応じた変速特性に従って変速制御Ｎを行な
わせるようにしたことにある。In order to achieve this objective, the present invention detects whether it is in a two-wheel drive state or a four-wheel drive state, and causes the transmission control device to perform shift control N in accordance with the shift characteristics corresponding to each state. be.

以下図面に示した実施例を参照しながら本発明を説明す
る。第１図には本発明に係る四輪駆動車の動力伝達装置
が示されている。この動力伝達装置は、ロンクアノプク
ラノチＩａ’ａ？有するトルクコンバータ１と、油圧に
よって自動変速が行なわれる平行二軸補助変速機２とを
備えたもので、横置機関３のクランク軸３ａの回転が、
トルクコンバータ１を介して補助変速機２の主軸２ａに
伝達され、該主軸から選択されたギヤを介してカウンタ
軸２ｂに伝達され、さら罠該カウンタ軸の出力ギヤ４を
介して差動機ケース５に一体化させたファイナルギヤ６
に伝達される。このようにしてファイナルギヤ６に伝達
された補助変速機２の動力は、差動機７のピニオンギヤ
８を駆動し、該ピニオンギヤによってサイドギヤ９を回
転させて、第１駆動車軸（例えば前軸駆動軸）に伝達さ
れる。一方、ファイナルギヤ６に伝達された補助変速機
２の動力は、該ファイナルギヤ６に一体化されたクラウ
ンギヤ１１を介して動力取出用ピニオンギヤ１２にも伝
達される。さらに、この動力伝達装置に（ま、ピニオン
ギヤ軸１３とブロベラシャフ）−１４間にクラッチ１５
が配設されており、このクララチェ５をシックシャフト
Ｊ６によって断接させる。なお、図示しない第２駆動車
軸（例え（了後輪駆動軸）には、プロペラシャフトによ
って動力が伝達される。The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 shows a power transmission device for a four-wheel drive vehicle according to the present invention. This power transmission device is the Ronquanopukranochi Ia'a? The engine is equipped with a torque converter 1 and a parallel two-shaft auxiliary transmission 2 in which automatic gear shifting is performed by hydraulic pressure.
Torque is transmitted to the main shaft 2a of the auxiliary transmission 2 via the torque converter 1, transmitted to the counter shaft 2b via a selected gear from the main shaft, and further transmitted to the differential case 5 via the output gear 4 of the counter shaft. Final gear 6 integrated into
is transmitted to. The power of the auxiliary transmission 2 transmitted to the final gear 6 in this way drives the pinion gear 8 of the differential 7, which rotates the side gear 9 to drive the first drive axle (for example, the front drive shaft). is transmitted to. On the other hand, the power of the auxiliary transmission 2 transmitted to the final gear 6 is also transmitted to the power extraction pinion gear 12 via the crown gear 11 integrated with the final gear 6. Furthermore, a clutch 15 is added to this power transmission device (well, pinion gear shaft 13 and blower shaft) - 14.
is provided, and this Clarache 5 is connected and disconnected by a thick shaft J6. Note that power is transmitted to a second drive axle (for example, a rear wheel drive shaft) not shown by a propeller shaft.

第１図に示した四＠駆動車では、車速検出器２１、スロ
ットル開度検出器２２に加え、二輪駆動状態か四輪駆動
状態かｔ確認する切換動作検出器２３を設置し、これら
の各信号２１ａ＋２２ａ１２３ａ’ｋ　マイクロコンピ
ュータ２４に入力し、該コレピーータ内に予め記憶させ
である変速特性（第２図参照）に鱈・て、マイクロコン
ピュータ２４から変速指令信号へを出力し、該信号によ
って補助変速機２のシフトノ＜ルプを作動させ・丁ソゲ
シフトまたはダウンンフトヲ自動的に行なわせる。即ち
、第２図に示した変速線図に基づいた変速機制御を行な
う場合において、加速時は同一スロットル開度でも四輪
駆動の方が二輪駆動よりもＬＹ高速まで使用できる。し
たがって、加速フ（−ＩＪソング四＠駆動時の循環トル
クをて打勝ち、二輪駆動時と同等に感じられる。In the four-wheel drive vehicle shown in Fig. 1, in addition to a vehicle speed detector 21 and a throttle opening detector 22, a switching operation detector 23 is installed to confirm whether the state is two-wheel drive or four-wheel drive. The signal 21a+22a123a'k is input to the microcomputer 24, and based on the speed change characteristics (see Fig. 2) stored in advance in the collector, the microcomputer 24 outputs a speed change command signal, and the signal causes the auxiliary speed change. Activate the shift knob of machine 2 to automatically shift up or down. That is, when performing transmission control based on the transmission diagram shown in FIG. 2, four-wheel drive can be used up to LY high speeds than two-wheel drive even at the same throttle opening during acceleration. Therefore, it overcomes the circulating torque during acceleration and feels the same as when driving with two wheels.

また、減速時における四輪駆動では、タウンシフトの変
速点が二輪駆動より低速側へ移動し、機関の回転を低く
おさえて燃費乞同上させる。Furthermore, in four-wheel drive during deceleration, the town shift shift point moves to a lower speed side than in two-wheel drive, keeping the engine rotation low and improving fuel efficiency.

なお、このような場合には、エンジンブレーキの利きが
悪化するが、これは循環トルクによって打消される。な
お、第１図における符号２５は、キンクダウンスイッチ
であり、アクセルヘダル２６の踏込量９０．９６’程度
において作動され、その信号２５ａをマイクロコンピュ
ータ２４に入力させて、二輪駆動または四輪駆動の各変
速特性における適宜な位置で変速を行なわせる。Note that in such a case, the efficiency of engine braking deteriorates, but this is canceled out by the circulating torque. The reference numeral 25 in FIG. 1 is a kink down switch, which is activated when the accelerator pedal 26 is depressed approximately 90.96', and inputs the signal 25a to the microcomputer 24 to switch the kink down switch to two-wheel drive or four-wheel drive. Shifting is performed at an appropriate position in the shifting characteristics.

さらに、この四輪駆動車には、トルクコンバータ１のロ
ックアツプクラッチｌａｄ作動させる制御基が組込まれ
ており、第３図（ａ）に示した二・輪駆動時における変
速特性または第３図（ｔ’）　Ｋ示した四輪駆動時にお
ける変速特性の斜線分部で、マイクロコンピュータ２４
からロックアツプ指令信号Ｂを出力させ、それによって
ロンクアツプクラノチ１ａ’＆作動させて、機関３と補
助変速機２の主″′軸２ａとを直結状態にする。このよ
うに、本実施例では、トルクコンノく一夕１のロックア
ツプ作動範囲を二輪駆動時と四輪駆動時とに変化をもた
せ、四輪駆動特有のぎくしゃく感と、ロックアツプ時の
振動ｔすら１−てフィーリングを向上させている。Furthermore, this four-wheel drive vehicle has a built-in control unit that operates the lock-up clutch LAD of the torque converter 1. t') In the shaded area of the shift characteristics during four-wheel drive shown in K, the microcomputer 24
The lock-up command signal B is outputted from the lock-up command signal B, thereby operating the long-up clutch nozzle 1a'&, thereby directly connecting the engine 3 and the main shaft 2a of the auxiliary transmission 2.In this way, in this embodiment, , the lock-up operating range of the torque controller is changed between two-wheel drive and four-wheel drive, improving the feeling by eliminating the jerkiness characteristic of four-wheel drive and even the vibration during lock-up. .

なお、上記実施例では、補助変速機２として平行二軸の
常時噛合方式を採用して−・るｂ″−１本発明ではこの
ような補助変速機に限定されず、遊星歯車方式のもので
もよい。また、上記実施例ではロックアツプクラッチ１
ａを有するトルクコンバータ１を採用しているｂ−１第
２図に示した変速時性に従った変速機制御のみを行なわ
せる場合には、ロックアツプクラッチｌａを備えていな
い通常のトルクコンノ（−夕を採用するだけでよい。さ
らＫまた、上記実施例では変速機制御装置としてマイク
ロコンビーータ２４を採用しているが、本発明では必ず
しもコンピュータを使用するとは限らず、車速信号、ス
ロットル開度信号および二輪駆動か四輪駆動かの確認信
号を処理し、その結果変速機に指令信号を出力する他の
信号回路であってもよい。また、実施例では、車速をス
ピードメークから検出しているが、この車速を出力軸等
から直接検出するようにしてもよく、ガバナ等乞介して
検出するようにしてもよい。また実゛飾例では、スロッ
トル開度をアクセルペダル２６の踏込量に対応して作動
されるポテンショメータを介して検出しているが、これ
をインテークマニホールド等の負圧を検出することによ
って得るようにしてもよい− なお、上記実施例に示した変速特性は、例示的に示した
もので、車種に応じて適宜変更して実施されることは云
うまでもない。In the above embodiment, the auxiliary transmission 2 employs a constant meshing system with two parallel axes. Also, in the above embodiment, the lock-up clutch 1
b-1 which employs a torque converter 1 having a torque converter 1 having a lock-up clutch la (-1). Further, in the above embodiment, the microcontroller 24 is used as the transmission control device, but in the present invention, the computer is not necessarily used, and the vehicle speed signal, throttle opening, etc. are not necessarily used. It is also possible to use other signal circuits that process the speed signal and the two-wheel drive or four-wheel drive confirmation signal and output a command signal to the transmission as a result.In addition, in the embodiment, the vehicle speed is detected from the speed make. However, this vehicle speed may be detected directly from the output shaft, etc., or may be detected via a governor, etc. In the practical example, the throttle opening is determined by the amount of depression of the accelerator pedal 26. Although this is detected via a potentiometer that is activated in response to the It goes without saying that the information may be modified and implemented as appropriate depending on the vehicle type.

上記したよ５に、本発明に係る四輪駆動車は二輪駆動時
と四輪駆動時とで各別の変速特性に従って変速機制御さ
れるので、極めて走行フ（−リングのよい車両を実現で
き、さらに燃費間上等も図ることができる。As mentioned above, in the four-wheel drive vehicle according to the present invention, the transmission is controlled according to different shift characteristics in two-wheel drive and four-wheel drive, so it is possible to realize a vehicle with extremely good running performance. Furthermore, it is possible to improve fuel efficiency.

【図面の簡単な説明】[Brief explanation of the drawing]

第Ｖ図は本発明に係る四輪駆動車の動力伝達線図にさら
にｏツクアップ範囲を加えた変速線図である。 １・・トルクコンバータ、ｌａ・・ロソクアノフ。 クラッチ、２・・・補助変速機、３・・機関、１５・・
クラッチ、１６・・シフタシャフト、２１・・・車速検
出器、２２・・スロノ）ｙし開度検出器、２３・・切換
動作検出器、２４・・マイクロコンビーータ。 出　　願　　人　　鈴木自動車工業株式会社代理人弁理
士　木　村　高　久 第１図 第２図 Ｖ　ｆｋｍ／ｈ） 第３図 ８（ｑ） （ｂ） ヱ ｔ　ｋｍ／ｈ　ｌFIG. V is a transmission diagram in which an O-up range is further added to the power transmission diagram of the four-wheel drive vehicle according to the present invention. 1. Torque converter, la... Rosokuanov. Clutch, 2... Auxiliary transmission, 3... Engine, 15...
Clutch, 16...Shifter shaft, 21...Vehicle speed detector, 22...Slow forward opening degree detector, 23...Switching operation detector, 24...Micro converter. Applicant Suzuki Motor Co., Ltd. Representative Patent Attorney Takahisa Kimura Figure 1 Figure 2 V fkm/h) Figure 3 8(q) (b) Et km/h l

Claims (1)

【特許請求の範囲】[Claims] 二輪駆動切換機ｍを有する四輪駆動車において、車速検
出手段、スロットル開度検出手段および上記切換機構の
切換動作検出手段２備えるとともに、上記各検出手段か
ら得られた信号を入力し、四輪駆動時と二輪駆動時に各
別の変速特性にもとず（変速指令を変速機に与える変速
機制御装置を備えたことを特徴とする四輪駆動車。In a four-wheel drive vehicle having a two-wheel drive switching device m, a vehicle speed detection means, a throttle opening detection means, and a switching operation detection means 2 of the switching mechanism are provided, and signals obtained from each of the detection means are input, and the four-wheel drive A four-wheel drive vehicle characterized by being equipped with a transmission control device that provides a transmission with a shift command based on different shift characteristics during drive and two-wheel drive.
JP58048472A 1983-03-23 1983-03-23 4-wheel-drive car Granted JPS59176119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58048472A JPS59176119A (en) 1983-03-23 1983-03-23 4-wheel-drive car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58048472A JPS59176119A (en) 1983-03-23 1983-03-23 4-wheel-drive car

Publications (2)

Publication Number Publication Date
JPS59176119A true JPS59176119A (en) 1984-10-05
JPH0463266B2 JPH0463266B2 (en) 1992-10-09

Family

ID=12804319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58048472A Granted JPS59176119A (en) 1983-03-23 1983-03-23 4-wheel-drive car

Country Status (1)

Country Link
JP (1) JPS59176119A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754835A (en) * 1984-10-12 1988-07-05 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Control arrangement for four-wheel drive vehicles
US4792011A (en) * 1984-10-12 1988-12-20 Dr. H.C.F. Ing. Porsche Ag Arrangement for the control of the force-transmission of a four-wheel drive vehicle
US6962550B2 (en) 2001-10-26 2005-11-08 Nissan Motor Co., Ltd. Control for vehicle including electric motor powered by engine driven generator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754835A (en) * 1984-10-12 1988-07-05 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Control arrangement for four-wheel drive vehicles
US4792011A (en) * 1984-10-12 1988-12-20 Dr. H.C.F. Ing. Porsche Ag Arrangement for the control of the force-transmission of a four-wheel drive vehicle
US6962550B2 (en) 2001-10-26 2005-11-08 Nissan Motor Co., Ltd. Control for vehicle including electric motor powered by engine driven generator

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