JP3062721B2 - Front and rear wheel drive vehicles - Google Patents

Front and rear wheel drive vehicles

Info

Publication number
JP3062721B2
JP3062721B2 JP6327438A JP32743894A JP3062721B2 JP 3062721 B2 JP3062721 B2 JP 3062721B2 JP 6327438 A JP6327438 A JP 6327438A JP 32743894 A JP32743894 A JP 32743894A JP 3062721 B2 JP3062721 B2 JP 3062721B2
Authority
JP
Japan
Prior art keywords
vehicle
electric motor
motor
rear wheel
driven
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.)
Expired - Fee Related
Application number
JP6327438A
Other languages
Japanese (ja)
Other versions
JPH08175210A (en
Inventor
哲郎 浜田
健太郎 新井
勇 橋詰
光司 小野
準 青木
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP6327438A priority Critical patent/JP3062721B2/en
Publication of JPH08175210A publication Critical patent/JPH08175210A/en
Application granted granted Critical
Publication of JP3062721B2 publication Critical patent/JP3062721B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/62Hybrid vehicles

Landscapes

  • Arrangement And Driving Of Transmission Devices (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、前後輪の一方をエンジ
ンで駆動すると共に他方を電動モータで駆動する前後輪
駆動車両に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front and rear wheel drive vehicle in which one of front and rear wheels is driven by an engine and the other is driven by an electric motor.

【0002】[0002]

【従来の技術】従来、この種の前後輪駆動車両におい
て、電動モータとしてACモータを使用し、インバータ
制御で全車速域に亘って電動モータを作動可能とするも
のが知られている(特開平3−159502号公報参
照)。
2. Description of the Related Art Conventionally, in this type of front-rear wheel drive vehicle, there is known a vehicle which uses an AC motor as an electric motor and which can operate the electric motor over the entire vehicle speed range by inverter control (Japanese Patent Laid-Open No. HEI 9-163556). 3-159502).

【0003】[0003]

【発明が解決しようとする課題】上記従来例のように全
車速域をカバーするには、電動モータを大出力のものに
する必要があり、更に、インバータ回路が必要になって
コストが高くなる。ところで、電動モータの使用目的を
雪道等の滑り易い路面での発進アシストに限定すべく、
車速が設定値以下のときにのみ電動モータを作動させる
ようにすれば、セルモータ等として使用される安価なD
Cブラシモータを用いることができる。然し、この場合
には、渋滞等で徐行運転している間、常に電動モータが
作動されることになり、ブラシの耐久性が問題になる。
本発明は、以上の点に鑑み、発進時に電動モータを作動
させて発進アシストを行うと共に、電動モータの作動を
一時的なものとしてモータの耐久性も確保し得るように
した前後輪駆動車両を提供することをその目的としてい
る。
In order to cover the entire vehicle speed range as in the above conventional example, it is necessary to use an electric motor having a large output, and furthermore, an inverter circuit is required and the cost is increased. . By the way, in order to limit the purpose of use of the electric motor to starting assistance on slippery roads such as snowy roads,
If the electric motor is operated only when the vehicle speed is equal to or lower than the set value, an inexpensive D used as a starter motor or the like can be obtained.
A C brush motor can be used. However, in this case, the electric motor is always operated during the slow operation due to traffic congestion or the like, and the durability of the brush becomes a problem.
In view of the above, the present invention provides a front-rear wheel drive vehicle that operates an electric motor at the time of starting to assist starting, and that can temporarily operate the electric motor to ensure the durability of the motor. Its purpose is to provide.

【0004】[0004]

【課題を解決するための手段】上記目的を達成すべく、
本発明によれば、前後輪の一方をエンジンで駆動すると
共に他方を電動モータで駆動する車両において、車両の
発進操作を確認する手段を備え、電動モータを発進操作
時にのみ作動させると共に、電動モータの負荷を検出す
る手段を設け、モータ負荷が一旦増加してから減少した
とき電動モータの作動を停止する。
In order to achieve the above object,
According to the onset bright, in a vehicle that drives the other by an electric motor to drive one of the front and rear wheels in an engine, comprising a means for confirming the starting operation of the vehicle, actuates only when starting operation of the electric motor, the electric Means for detecting the load of the motor is provided, and when the motor load increases once and then decreases, the operation of the electric motor is stopped.

【0005】[0005]

【作用】車両の発進操作は、例えば、ブレーキのオフ操
作とクラッチのオン操作(オートマチック車ではDレン
ジやRレンジへの切換)とアクセルペダルの踏み込み操
作とで確認でき、この場合通常走行と区別するために車
速が所定値以下という条件を発進操作の確認条件として
付加するようにしても良いが、これだけでは徐行中も発
進操作中と判断されて、電動モータが作動してしまう。
ここで、電動モータの負荷は電動モータの作動当初に急
増し、電動モータで駆動される車輪の回転で車両が動き
始めたとき減少する。従って、本発明によれば、発進操
作で車両が動き始めたときに電動モータの作動が停止さ
れることになる。尚、エンジンで駆動される車輪が路面
に対しスリップしていても、車両が動き始めれば車輪が
路面をグリップするから、確実に発進できる。
The start operation of the vehicle can be confirmed by, for example, the operation of turning off the brake, the operation of turning on the clutch (switching to the D range or the R range in an automatic vehicle), and the operation of depressing the accelerator pedal. For this purpose, a condition that the vehicle speed is equal to or lower than a predetermined value may be added as a condition for confirming the start operation. However, this alone determines that the start operation is being performed even during slow running, and the electric motor operates.
Here, the load of the electric motor rapidly increases at the beginning of the operation of the electric motor, and decreases when the vehicle starts to move due to the rotation of wheels driven by the electric motor. Therefore, according to this onset bright, the electric motor operation is to be stopped when the vehicle begins to move in the starting operation. In addition, even if the wheels driven by the engine are slipping on the road surface, if the vehicle starts moving, the wheels grip the road surface, so that the vehicle can start reliably.

【0006】[0006]

【実施例】図1の実施例は、前輪1と後輪2とを各一対
備える4輪車両であり、左右一対の前輪1をエンジン3
により変速機4を介して駆動し、左右一対の後輪2を電
動モータ5により減速機6とクラッチ7とデフギア8と
を介して、駆動するようにした。
1 is a four-wheeled vehicle having a pair of front wheels 1 and a pair of rear wheels 2 and a pair of left and right front wheels 1 with an engine 3.
And a pair of left and right rear wheels 2 are driven by an electric motor 5 via a speed reducer 6, a clutch 7 and a differential gear 8.

【0007】電動モータ5はDCブラシモータで構成さ
れており、該モータ5を車載バッテリー9に前後進切換
回路10を介して接続した。そして、前後進切換回路1
0とバッテリー9との間の接続回路に、制御回路11に
設けたリレー12によってオンオフされる常開型のリレ
ースイッチ12aを介設し、リレー12に通電したとき
リレースイッチ12aがオンして電動モータ5が作動さ
れると共にクラッチ7が係合され、後輪2が駆動される
ようにした。尚、クラッチ7はリレースイッチ12aが
オフされたとき係合解除され、また、前後進切換回路1
0は車室内のシフトレバーの操作に連動して切換制御さ
れる。
The electric motor 5 is constituted by a DC brush motor, and the motor 5 is connected to a vehicle-mounted battery 9 via a forward / reverse switching circuit 10. And forward / reverse switching circuit 1
A normally open relay switch 12a that is turned on and off by a relay 12 provided in the control circuit 11 is provided in a connection circuit between the battery 0 and the battery 9 so that when the relay 12 is energized, the relay switch 12a is turned on and the motor is electrically operated. The motor 5 is operated, the clutch 7 is engaged, and the rear wheel 2 is driven. The clutch 7 is disengaged when the relay switch 12a is turned off.
0 is switched and controlled in conjunction with the operation of the shift lever in the passenger compartment.

【0008】制御回路11には、発進操作の確認手段1
4により発進操作時にリレー14aを介してオンされる
常開型のスイッチ14bと、スリップ率の計測手段16
により前輪1のスリップ率が所定値以上のときにリレー
16aを介してオンされる常開型のスイッチ16bと、
モータ負荷の検出手段17によりモータ負荷が一旦増加
してから減少したときにリレー17aを介してオフされ
る常閉型のスイッチ17bとが直列に介設されており、
これらスイッチ14b、16b、17bが全てオンのと
きにリレー12に通電される。
[0008] The control circuit 11, confirmation of the calling Susumu operation means 1
4, a normally open switch 14b which is turned on via a relay 14a at the time of starting operation, and a slip ratio measuring means 16
Relay when the slip ratio of the front wheel 1 is greater than or equal to a predetermined value
A normally open switch 16b that is turned on via 16a;
The motor load is temporarily increased by the motor load detecting means 17
And then turned off via relay 17a
And a normally-closed switch 17b is interposed in series,
When these switches 14b, 16b, 17b are all on, the relay 12 is energized.

【0009】発進確認手段14は、ブレーキペダルの踏
み込みでオンするブレーキスイッチの信号と、アクセル
ペダルの踏み込みでオンするアクセルスイッチの信号
と、変速機4がニュートラル状態であるか否かを検出す
るスイッチ、例えば、変速機4が自動変速機であるとき
はシフトレバーのポジションスイッチ、手動変速機であ
るときはクラッチペダルに連動するクラッチスイッチか
ら成るスイッチの信号と、車速センサの信号とを受け、
ブレーキスイッチがオフ、アクセルスイッチがオン、変
速機4が非ニュートラル状態、車速が設定値以下の4条
件が満足されているときに発進操作時と判断し、リレー
14aに通電してスイッチ14bをオンすべく構成され
ている。尚、変速機4の出力側のトルクを検出するトル
クセンサを備える車両では、ブレーキスイッチとトルク
センサと車速センサとで発進操作を確認することもでき
る。また、スリップ率の計測手段16は、各車輪1、2
の回転速度を検出する車輪速センサの信号に基づいて前
後輪1、2の回転速度差を検出し、前輪1の路面に対す
るスリップ率を計測するように構成される。
The start confirming means 14 includes a signal for a brake switch which is turned on when the brake pedal is depressed, a signal for an accelerator switch which is turned on when the accelerator pedal is depressed, and a switch for detecting whether or not the transmission 4 is in a neutral state. For example, when the transmission 4 is an automatic transmission, a position signal of a shift lever is received, and when the transmission 4 is a manual transmission, a signal of a switch including a clutch switch linked to a clutch pedal and a signal of a vehicle speed sensor are received.
When the brake switch is off, the accelerator switch is on, the transmission 4 is in the non-neutral state, and the vehicle speed satisfies the four conditions below the set value, it is determined that the vehicle is starting, and the relay 14a is energized to turn on the switch 14b. It is configured to. In a vehicle equipped with a torque sensor that detects the torque on the output side of the transmission 4, the start operation can be confirmed by the brake switch, the torque sensor, and the vehicle speed sensor. In addition, the slip ratio measuring means 16 is provided for each wheel 1, 2
Based on the signal of the wheel speed sensor that detects the rotation speed of the vehicle
The rotational speed difference between the rear wheels 1 and 2 is detected and the front wheel 1
It is configured to measure the slip rate of the vehicle.

【0010】以上の構成によれば、発進操作時に前輪1
がスリップすると電動モータ5が作動されて後輪2が駆
動される。この場合、電動モータ5の回転速度や減速機
6のギア比の設定により、スリップを生じないような所
要の低速で後輪2を駆動できるから、雪道等でアクセル
操作の誤りにより前輪1がスリップしていても、車両を
確実に動かすことができる。車両が動き始めれば前輪1
が路面をグリップし易くなり、以後前輪1だけで発進走
行できるようになる。ここで、電動モータ5の負荷は、
作動当初に急増し、後輪2の駆動で車両が動き始めると
減少する。そのため、車両が動き始めると、負荷検出手
段17によりリレー17aを介してスイッチ17bがオ
フされて電動モータ5の作動が停止され、徐行運転中の
電動モータ5の継続作動で電動モータ5のブラシの耐久
性が悪くなるといった不具合は生じない。
[0010] According to the above configuration, outgoing advance operation at the front wheels 1
, The electric motor 5 is operated to drive the rear wheel 2. In this case, since the rear wheel 2 can be driven at a required low speed that does not cause slippage by setting the rotation speed of the electric motor 5 and the gear ratio of the speed reducer 6, the front wheel 1 can be driven due to an incorrect accelerator operation on a snowy road or the like. Even if the vehicle slips, the vehicle can be reliably moved. Front wheel 1 if the vehicle starts moving
Makes it easier to grip the road surface, so that the vehicle can start running only with the front wheels 1 thereafter. Here, the load of the electric motor 5 is
When it suddenly increases at the beginning of operation and the vehicle starts to move by driving the rear wheels 2,
Decrease. Therefore, when the vehicle starts moving, the load detection
The step 17 turns off the switch 17b via the relay 17a.
As a result, the operation of the electric motor 5 is stopped, and the malfunction of the brush of the electric motor 5 due to the continuous operation of the electric motor 5 during the slow operation does not occur.

【0011】[0011]

【0012】ここで、モータ負荷が大きいときはモータ
電流が大きく、モータ電圧が小さくなり、電動モータ5
の起動時にモータ電流は図(a)に示す如く変化し、モ
ータ電圧は図(b)に示す如く変化する。かくて、負荷
検出手段17を、モータ電流やモータ電圧をパラメータ
としてモータ負荷を検出するように構成することがで
き、この場合は、モータ電流が起動後一旦増加してから
所定値まで減少したとき、或いはモータ電圧が起動後所
定値に増加したとき、電動モータ5の作動を停止させる
ようにすれば良い。尚、モータの発熱をパラメータとし
てモータ負荷を検出することも可能である。
When the motor load is large, the motor current is large and the motor voltage is small.
The motor current when starting to change as shown in FIG. 2 (a), the motor voltage changes as shown in FIG. 2 (b). Thus, the load detecting means 17 can be configured to detect the motor load using the motor current or the motor voltage as a parameter. In this case, when the motor current once increases after startup and then decreases to a predetermined value. Alternatively, the operation of the electric motor 5 may be stopped when the motor voltage increases to a predetermined value after the start. Note that it is also possible to detect the motor load using the heat generated by the motor as a parameter.

【0013】尚、上記実施例では前輪1をエンジン3で
駆動するようにしたが、後輪2をエンジン3で駆動し、
前輪1を電動モータ5で駆動する車両にも同様に本発明
を適用できる。
In the above embodiment, the front wheels 1 are driven by the engine 3, but the rear wheels 2 are driven by the engine 3,
The present invention can be similarly applied to a vehicle in which the front wheel 1 is driven by the electric motor 5.

【0014】[0014]

【発明の効果】以上の説明から明らかなように、本発明
によれば、電動モータを発進アシストのみに用いること
ができるため、電動モータを小型安価なDCブラシモー
タにすることができてコストダウンを図れると共に、電
動モータは発進時に一時的にしか作動されないため、D
Cブラシモータを用いても耐久性を確保できる。
As is apparent from the above description, according to the present invention, since the electric motor can be used only for starting assistance, the electric motor can be a small and inexpensive DC brush motor, and the cost can be reduced. In addition, since the electric motor is only operated temporarily at the time of starting, D
Even if a C brush motor is used, durability can be ensured.

【図面の簡単な説明】[Brief description of the drawings]

【図1】 本発明の実施の一例のスケルトン図FIG. 1 is a skeleton diagram of an embodiment of the present invention.

【図2】 (a)モータ電流の変化を示すグラフ、(b)モー
タ電圧の変化を示すグラフ
2A is a graph showing a change in motor current, and FIG.
Graph showing the change in data voltage

【符号の説明】[Explanation of symbols]

1 前輪 2 後輪 3 エンジ
ン 5 電動モータ 11 制御回路 14 発進確
認手段 17 負荷検出手段
DESCRIPTION OF SYMBOLS 1 Front wheel 2 Rear wheel 3 Engine 5 Electric motor 11 Control circuit 14 Start check means 17 Load detection means

───────────────────────────────────────────────────── フロントページの続き (72)発明者 小野 光司 埼玉県和光市中央1丁目4番1号 株式 会社本田技術研究所内 (72)発明者 青木 準 埼玉県和光市中央1丁目4番1号 株式 会社本田技術研究所内 (56)参考文献 特開 平5−131858(JP,A) 特開 平5−319127(JP,A) 特開 平6−217456(JP,A) 特開 昭56−21916(JP,A) (58)調査した分野(Int.Cl.7,DB名) B60K 17/356 B60K 6/02 B60L 11/00 - 11/14 ──────────────────────────────────────────────────続 き Continued from the front page (72) Inventor Koji Ono 1-4-1 Chuo, Wako-shi, Saitama Pref. Inside Honda R & D Co., Ltd. (72) Inventor Jun Aoki 1-4-1 Chuo, Wako-shi, Saitama Pref. (56) References JP-A-5-131858 (JP, A) JP-A-5-319127 (JP, A) JP-A-6-217456 (JP, A) JP-A-56-21916 ( JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B60K 17/356 B60K 6/02 B60L 11/00-11/14

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 前後輪の一方をエンジンで駆動すると共
に他方を電動モータで駆動する車両において、車両の発
進操作を確認する手段を備え、電動モータを発進操作時
にのみ作動させると共に、電動モータの負荷を検出する
手段を設け、モータ負荷が一旦増加してから減少したと
き電動モータの作動を停止することを特徴とする前後輪
駆動車両。
1. A vehicle in which one of front and rear wheels is driven by an engine and the other is driven by an electric motor, the vehicle includes means for confirming a start operation of the vehicle. A front-rear wheel drive vehicle provided with means for detecting a load, wherein the operation of the electric motor is stopped when the motor load once increases and then decreases.
JP6327438A 1994-12-28 1994-12-28 Front and rear wheel drive vehicles Expired - Fee Related JP3062721B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6327438A JP3062721B2 (en) 1994-12-28 1994-12-28 Front and rear wheel drive vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6327438A JP3062721B2 (en) 1994-12-28 1994-12-28 Front and rear wheel drive vehicles

Publications (2)

Publication Number Publication Date
JPH08175210A JPH08175210A (en) 1996-07-09
JP3062721B2 true JP3062721B2 (en) 2000-07-12

Family

ID=18199177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6327438A Expired - Fee Related JP3062721B2 (en) 1994-12-28 1994-12-28 Front and rear wheel drive vehicles

Country Status (1)

Country Link
JP (1) JP3062721B2 (en)

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* Cited by examiner, † Cited by third party
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EP1327547A2 (en) 2002-01-11 2003-07-16 Nissan Motor Company, Limited Apparatus and method for providing protection to electric traction motor of vehicle
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1327547A2 (en) 2002-01-11 2003-07-16 Nissan Motor Company, Limited Apparatus and method for providing protection to electric traction motor of vehicle
EP1342610A2 (en) 2002-03-08 2003-09-10 Nissan Motor Co., Ltd. Vehicle powertrain control system and method for enhanced vehicle start-up acceleration

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