JPH08303485A - Remaining life judging device for multiple disc friction clutch - Google Patents
Remaining life judging device for multiple disc friction clutchInfo
- Publication number
- JPH08303485A JPH08303485A JP8051910A JP5191096A JPH08303485A JP H08303485 A JPH08303485 A JP H08303485A JP 8051910 A JP8051910 A JP 8051910A JP 5191096 A JP5191096 A JP 5191096A JP H08303485 A JPH08303485 A JP H08303485A
- Authority
- JP
- Japan
- Prior art keywords
- friction clutch
- remaining life
- disc friction
- control
- clutch
- 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
Links
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば４輪駆動車
の駆動力分配制御装置等におけるトルク配分用クラッチ
等に適用される多板摩擦クラッチに関し、特に、多板摩
擦クラッチの残存寿命判定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-disc friction clutch applied to, for example, a torque distribution clutch in a drive force distribution control device for a four-wheel drive vehicle, and more particularly to a remaining life determination device for a multi-disc friction clutch. Regarding
【０００２】[0002]
【従来の技術】従来、エンジン直結駆動系の後輪（主駆
動輪）に対し、制御信号に応じて締結力が変化するトル
ク分配用クラッチ、例えばドライブプレートとドリブン
プレートを交互に重ねて圧着する構造の湿式の多板摩擦
クラッチを介して前輪（従駆動輪）にエンジン駆動力を
伝達する構成の４輪駆動車において、前後輪の回転速度
差を演算し、該回転速度差が大きい程、即ち、主駆動輪
である後輪のスリップの発生が大きい程前記クラッチの
締結力を増大させて前輪（従駆動輪）側に対する駆動力
配分を高めて、速やかに後輪（主駆動輪）のスリップを
制御させるようにした４輪駆動車の駆動力分配制御装置
が知られている。2. Description of the Related Art Conventionally, a torque distribution clutch whose engaging force changes according to a control signal, such as a drive plate and a driven plate, is alternately stacked and crimped to a rear wheel (main driving wheel) of a drive system directly connected to an engine. In a four-wheel drive vehicle configured to transmit engine driving force to front wheels (driven wheels) via a wet multi-plate friction clutch having a structure, a rotational speed difference between front and rear wheels is calculated, and as the rotational speed difference increases, That is, as the occurrence of slippage of the rear wheels, which are the main driving wheels, increases the engagement force of the clutch to increase the distribution of the driving force to the front wheels (the sub-driving wheels), so that the rear wheels (the main driving wheels) quickly move. A drive force distribution control device for a four-wheel drive vehicle that controls slip is known.
【０００３】具体的には、前記多板摩擦クラッチを内蔵
したトランスファーと、クラッチ締結力となる制御油圧
を発生する制御油圧発生装置と、制御油圧発生装置に設
けられたソレノイドバルブへ各種入力センサからの情報
に基づいて所定のソレノイド駆動電流を出力するトルク
スプリットコントローラとを備えて構成される。Specifically, a transfer incorporating the multi-plate friction clutch, a control oil pressure generating device for generating a control oil pressure serving as a clutch engaging force, and a solenoid valve provided in the control oil pressure generating device are connected to various input sensors from various input sensors. And a torque split controller that outputs a predetermined solenoid drive current based on the information of 1.
【０００４】[0004]
【発明が解決しようとする課題】このような従来の４輪
駆動車の駆動力分配制御装置においては、多板摩擦クラ
ッチに作用した負荷を知ることができないため、多板摩
擦クラッチの残存寿命（クラッチフェーシング寿命）を
正確に知るためには、トランスファーユニットを車両か
ら降ろし、これを全分解して内蔵された多板摩擦クラッ
チのクラッチフェーシングの状態を目視にて確認せざる
を得ず、面倒な作業が必要となる。In such a conventional drive force distribution control device for a four-wheel drive vehicle, since the load acting on the multi-disc friction clutch cannot be known, the remaining life of the multi-disc friction clutch ( In order to accurately know the clutch facing life), the transfer unit must be removed from the vehicle, and it must be completely disassembled to visually check the state of the clutch facing of the built-in multi-plate friction clutch, which is troublesome. Work is required.
【０００５】又、上記の確認作業を常時行うわけにはい
かないため、多板摩擦クラッチの正確な寿命を常時把握
することは不可能であり、走行距離をもとに残存寿命を
予測してクラッチ交換を行うことになる。この場合に
は、高負荷での運転状態を測定して寿命を判断するた
め、負荷の少ない運転状態で使用されていた場合には、
実際の多板クラッチの寿命よりも早めにクラッチの交換
をすることになってしまう。Further, since it is not possible to carry out the above-mentioned confirmation work all the time, it is impossible to always grasp the accurate life of the multi-disc friction clutch, and the remaining life is predicted based on the traveled distance. Will be replaced. In this case, the operating condition under high load is measured to determine the life.
The clutch will have to be replaced earlier than the actual life of the multi-plate clutch.
【０００６】そこで、本発明は以上のような従来の問題
点に鑑み、種々の情報から多板摩擦クラッチの負荷状態
を判定し、この負荷状態から多板摩擦クラッチの残存寿
命を判定する構成により、多板摩擦クラッチの故障の発
生を事前に検知可能にし、使用者へのサービス性向上を
図ることを目的とする。In view of the conventional problems as described above, the present invention has a configuration in which the load state of the multi-disc friction clutch is determined from various information and the remaining life of the multi-disc friction clutch is determined from this load state. , It is intended to detect the occurrence of a failure of the multi-disc friction clutch in advance and improve the serviceability to the user.
【０００７】[0007]
【課題を解決するための手段】このため、請求項１記載
の多板摩擦クラッチの残存寿命判定装置は、クラッチ締
結力となる制御トルクを油圧にて得る多板摩擦クラッチ
において、多板摩擦クラッチの差動回転数を検出する差
動回転数検出手段と、多板摩擦クラッチの制御トルクと
なる制御油圧を検出する制御油圧検出手段と、前記制御
油圧の作動油の温度を検出する油温検出手段と、多板摩
擦クラッチの負荷時間を計測する負荷時間計測手段と、
前記検出された差動回転数、制御油圧、油温及び負荷時
間に基づいて多板摩擦クラッチの負荷状態を判定する負
荷状態判定手段と、前記多板摩擦クラッチの負荷状態に
基づいて残存寿命を算出する残存寿命算出手段とを含ん
で構成した。Therefore, the remaining life determining device for a multi-disc friction clutch according to claim 1 is a multi-disc friction clutch that obtains a control torque, which is a clutch engagement force, by hydraulic pressure. Differential rotation speed detection means for detecting the differential rotation speed of the multi-plate friction clutch, control oil pressure detection means for detecting the control oil pressure that is the control torque of the multi-disc friction clutch, and oil temperature detection for detecting the temperature of the operating oil of the control oil pressure. Means, load time measuring means for measuring the load time of the multi-plate friction clutch,
Load state determination means for determining a load state of the multi-disc friction clutch based on the detected differential rotation speed, control oil pressure, oil temperature and load time, and a remaining life based on the load state of the multi-disc friction clutch. The remaining life calculating means for calculating is included.
【０００８】また、請求項２記載の多板摩擦クラッチの
残存寿命判定装置は、クラッチ締結力となる制御トルク
を油圧にて得る多板摩擦クラッチにおいて、多板摩擦ク
ラッチの差動回転数を検出する差動回転数検出手段と、
油圧制御手段が出力する制御トルクの指令値を制御油圧
の値に変換する油圧指令値変換手段と、前記制御油圧の
作動油の温度を検出する油温検出手段と、多板摩擦クラ
ッチの負荷時間を計測する負荷時間計測手段と、前記検
出された差動回転数、油温、負荷時間と、前記油圧指令
値変換手段に変換された制御油圧とに基づいて多板摩擦
クラッチの負荷状態を判定する負荷状態判定手段と、前
記多板摩擦クラッチの負荷状態に基づいて残存寿命を算
出する残存寿命算出手段とを含んで構成した。According to a second aspect of the present invention, the remaining life determining device for a multi-disc friction clutch detects the differential rotation speed of the multi-disc friction clutch in the multi-disc friction clutch which obtains a control torque which is a clutch engagement force by hydraulic pressure. Differential rotation speed detection means,
Hydraulic pressure command value conversion means for converting a control torque command value output by the hydraulic pressure control means into a control hydraulic pressure value, oil temperature detection means for detecting the temperature of hydraulic oil of the control hydraulic pressure, and load time of the multi-disc friction clutch. Determining the load state of the multi-plate friction clutch based on the load time measuring means, the detected differential rotation speed, the oil temperature, the load time, and the control hydraulic pressure converted by the hydraulic pressure command value converting means. And a remaining life calculation means for calculating the remaining life based on the load status of the multi-disc friction clutch.
【０００９】また、請求項３記載の発明は、請求項１又
は２記載の多板摩擦クラッチの残存寿命判定装置におい
て、前記負荷状態判定手段を、前記制御油圧から多板摩
擦クラッチの伝達トルクを演算し、該伝達トルクと差動
回転数とから多板摩擦クラッチの負荷エネルギを演算
し、該負荷エネルギと負荷時間と油温から、負荷状態と
しての多板摩擦クラッチのクラッチフェーシング温度を
演算する手段から構成した。According to a third aspect of the present invention, in the remaining life determining device for a multi-plate friction clutch according to the first or second aspect, the load state determining means is configured to control the transmission torque of the multi-plate friction clutch from the control hydraulic pressure. The load energy of the multi-plate friction clutch is calculated from the transmission torque and the differential rotation speed, and the clutch facing temperature of the multi-plate friction clutch as a load state is calculated from the load energy, the load time and the oil temperature. Composed of means.
【００１０】また、請求項４記載の発明は、請求項３記
載の多板摩擦クラッチの残存寿命判定装置において、前
記残存寿命算出手段を、多板摩擦クラッチのクラッチフ
ェーシング温度を、所定温度範囲毎に区分し、各区分毎
の積算時間を計測し、該積算時間と予め判明している多
板摩擦クラッチフェーシングの寿命線図から求められる
各区分毎の等価寿命とから残存寿命の要素であるマイナ
ー値を算出する手段から構成した。According to a fourth aspect of the present invention, in the remaining life determining device for a multi-disc friction clutch according to the third aspect, the remaining life calculating means is configured to determine the clutch facing temperature of the multi-disc friction clutch for each predetermined temperature range. The accumulated life of each division is measured, and the minor life which is an element of the remaining life is calculated from the accumulated time and the equivalent life of each division obtained from the life diagram of the multi-disc friction clutch facing which is known in advance. It consisted of means for calculating the value.
【００１１】また、請求項５記載の発明は、請求項４記
載の多板摩擦クラッチの残存寿命判定装置において、前
記マイナー値をＡ、現在までの走行距離をＢとしたと
き、 Ｃ＝（Ｂ÷Ａ）−Ｂ の式に基づいて、走行可能な残り距離Ｃを求める手段を
備えた。According to a fifth aspect of the present invention, in the remaining life determining apparatus for a multi-disc friction clutch according to the fourth aspect, when the minor value is A and the traveling distance to the present is B, C = (B ÷ A) -B is provided based on the formula for calculating the remaining travelable distance C.
【００１２】また、請求項６記載の発明は、請求項１乃
至５のいずれかに記載の多板摩擦クラッチの残存寿命判
定装置において、前記残存寿命を、運転席の近傍に配設
されて運転者が認知することが可能な表示装置に出力す
るようにした。According to a sixth aspect of the present invention, in the remaining life determining device for a multi-plate friction clutch according to any one of the first to fifth aspects, the remaining life is set near the driver's seat for operation. It is output to a display device that can be recognized by the person.
【００１３】また、請求項７記載の発明は、請求項１乃
至５のいずれかに記載の多板摩擦クラッチの残存寿命判
定装置において、前記残存寿命算出手段に診断用コネク
タを接続しておき、この診断用コネクタに外部診断装置
の接続端子を接続することにより、前記外部診断装置の
表示部に前記残存寿命を適宜出力可能とした。According to a seventh aspect of the present invention, in the remaining life determining device for a multi-plate friction clutch according to any of the first to fifth aspects, a diagnostic connector is connected to the remaining life calculating means, By connecting the connection terminal of the external diagnostic device to the diagnostic connector, the remaining life can be appropriately output to the display unit of the external diagnostic device.
【００１４】さらに、請求項８記載の発明は、請求項１
乃至５のいずれかに記載の多板摩擦クラッチの残存寿命
判定装置において、前記負荷状態判定手段に診断用コネ
クタを接続しておき、この診断用コネクタに、前記残存
寿命算出手段を備えた外部診断装置の接続端子を接続す
ることにより、前記外部診断装置の表示部に前記残存寿
命を適宜出力可能とした。Further, the invention of claim 8 is the same as claim 1.
In the remaining life determining apparatus for a multi-disc friction clutch according to any one of items 1 to 5, an external diagnosis is provided in which the diagnostic connector is connected to the load condition determining means, and the diagnostic connector includes the remaining life calculating means. By connecting the connection terminal of the device, the remaining life can be appropriately output to the display unit of the external diagnostic device.
【００１５】[0015]
【発明の効果】請求項１記載の発明によれば、検出され
た差動回転数、制御油圧、油温及び負荷時間の４つの情
報から、多板摩擦クラッチの負荷状態が判断され、この
負荷状態に基づいて残存寿命が算出されるようにしたか
ら、多板摩擦クラッチのクラッチフェーシングの状態を
目視にて確認する必要がなく、面倒な作業が不要とな
り、多板摩擦クラッチの寿命を常時把握することが可能
であり、多板摩擦クラッチの故障の発生を事前に検知で
き、故障発生前に多板摩擦クラッチの交換・修復が可能
になり、使用者へのサービス性の向上を図ることができ
る。According to the first aspect of the invention, the load state of the multi-disc friction clutch is judged from the four pieces of information of the detected differential rotation speed, control oil pressure, oil temperature and load time, and this load is determined. Since the remaining life is calculated based on the state, it is not necessary to visually check the state of the clutch facing of the multi-disc friction clutch, troublesome work is unnecessary, and the life of the multi-disc friction clutch is constantly grasped. It is possible to detect the occurrence of a failure of the multi-disc friction clutch in advance, and it is possible to replace and repair the multi-disc friction clutch before the failure occurs, and to improve serviceability to users. it can.
【００１６】また、請求項２記載の発明によれば、残存
寿命の判定に必要な制御油圧を、油圧指令値変換手段に
よって制御トルクの指令値を変換することにより得てい
るので、検出手段を減少させた残存寿命判定装置とな
り、装置コストの低減化を図ることができる。また、請
求項１記載の効果と同様に、多板摩擦クラッチのクラッ
チフェーシングの状態を目視にて確認する必要がなく、
面倒な作業が不要となり、多板摩擦クラッチの寿命を常
時把握することが可能であり、多板摩擦クラッチの故障
の発生を事前に検知でき、故障発生前に多板摩擦クラッ
チの交換・修復が可能になり、使用者へのサービス性の
向上を図ることができる。According to the second aspect of the invention, the control oil pressure required for determining the remaining life is obtained by converting the command value of the control torque by the oil pressure command value converting means. The remaining life determining device is reduced, and the device cost can be reduced. Further, similarly to the effect described in claim 1, it is not necessary to visually check the state of the clutch facing of the multi-plate friction clutch,
No need for troublesome work, it is possible to always know the life of the multi-disc friction clutch, it is possible to detect the occurrence of failure of the multi-disc friction clutch in advance, and it is possible to replace or repair the multi-disc friction clutch before the failure occurs. This makes it possible to improve the serviceability to the user.
【００１７】また、請求項３記載の発明によれば、請求
項１又は２記載の効果を得ることができるとともに、多
板摩擦クラッチの負荷状態であるクラッチフェーシング
温度を演算することができる。According to the third aspect of the present invention, the effect of the first or second aspect can be obtained, and the clutch facing temperature, which is the load state of the multi-plate friction clutch, can be calculated.
【００１８】また、請求項４記載の発明によれば、請求
項３記載の効果を得ることができるとともに、多板摩擦
クラッチの残存寿命の要素であるマイナー値を算出する
ことができる。According to the invention described in claim 4, the effect described in claim 3 can be obtained, and the minor value which is a factor of the remaining life of the multi-plate friction clutch can be calculated.
【００１９】また、請求項５記載の発明によれば、請求
項４記載の効果を得ることができるとともに、走行可能
な残り距離を、マイナー値と現在までの走行距離から求
めることができる。According to the invention described in claim 5, the effect of claim 4 can be obtained, and the remaining travelable distance can be obtained from the minor value and the traveled distance up to the present time.
【００２０】また、請求項６記載の発明によれば、請求
項１乃至５記載のいずれかの効果を得ることができると
ともに、運転者は、表示装置によって多板摩擦クラッチ
の残存寿命を、常時正確に把握することができる。Further, according to the invention of claim 6, it is possible to obtain the effect according to any one of claims 1 to 5, and at the same time, the driver always indicates the remaining life of the multi-disc friction clutch by the display device. It can be grasped accurately.
【００２１】また、請求項７記載の発明によれば、請求
項１乃至５記載のいずれかの効果を得ることができると
ともに、残存寿命算出手段と接続した診断用コネクタ
に、外部診断装置の接続端子を接続するだけで、多板摩
擦クラッチの残存寿命を即座に把握することができる。
また、残存寿命判定装置は、外部診断装置に出力するだ
けの残存寿命情報を記憶していればよいので、装置本体
の演算部、制御部、記憶部等の容量が小さくて済む。According to the invention described in claim 7, it is possible to obtain the effect according to any one of claims 1 to 5, and to connect the external diagnostic device to the diagnostic connector connected to the remaining life calculation means. By simply connecting the terminals, the remaining life of the multi-plate friction clutch can be immediately grasped.
Further, the remaining life determining device only needs to store the remaining life information to be output to the external diagnostic device, and thus the capacity of the computing unit, the control unit, the storage unit and the like of the device body can be small.
【００２２】さらに、請求項８記載の発明によれば、請
求項１乃至５記載のいずれかの効果を得ることができる
とともに、負荷状態判定手段と接続した診断用コネクタ
に、残存寿命算出手段を備えた外部診断装置の接続端子
を接続するだけで、多板摩擦クラッチの残存寿命を即座
に把握することができる。そして、残存寿命算出手段は
外部診断装置に備えられているので、装置本体の演算
部、制御部、記憶部等の容量が、さらに小さくて済む。Further, according to the invention described in claim 8, the effect of any one of claims 1 to 5 can be obtained, and the remaining life calculation means is provided in the diagnostic connector connected to the load state determination means. The remaining life of the multi-disc friction clutch can be immediately grasped by simply connecting the connection terminal of the external diagnostic device provided. Since the remaining life calculation means is provided in the external diagnostic device, the capacity of the arithmetic unit, the control unit, the storage unit, etc. of the main body of the device can be further reduced.
【００２３】[0023]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。図２は、本発明にかかる多板摩擦ク
ラッチの残存寿命判定装置が適用される４輪駆動車にお
ける駆動系の全体システム図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is an overall system diagram of a drive system in a four-wheel drive vehicle to which the remaining life determining apparatus for a multi-plate friction clutch according to the present invention is applied.
【００２４】この図に示される車両は後輪ベースの４輪
駆動車であり、その駆動系には、エンジン１、トランス
ミッション２、トランスファ入力軸３、リヤプロペラシ
ャフト４、リヤディファレンシャル５、後輪（主駆動
輪）６、トランスファ出力軸７、フロントプロペラシャ
フト８、フロントディファレンシャル９、前輪（従駆動
輪）１０を備えていて、後輪６へとトランスミッション
２を経由してきたエンジン駆動力が直接伝達され、前輪
１０へは前輪駆動系である前記トランスファ入出力軸
３，７間に設けてあるトランスファ１１を介してエンジ
ン駆動力が伝達される。The vehicle shown in this figure is a rear wheel-based four-wheel drive vehicle, and its drive system includes an engine 1, a transmission 2, a transfer input shaft 3, a rear propeller shaft 4, a rear differential 5, and rear wheels ( The main drive wheel 6), the transfer output shaft 7, the front propeller shaft 8, the front differential 9, and the front wheel (slave drive wheel) 10 are provided, and the engine driving force transmitted via the transmission 2 is directly transmitted to the rear wheel 6. The engine driving force is transmitted to the front wheels 10 via a transfer 11 provided between the transfer input / output shafts 3 and 7 which is a front wheel drive system.
【００２５】そして、前後輪の駆動力分配を最適に制御
する駆動力分配制御装置は、湿式多板摩擦クラッチ１１
ａ（トルク分配用クラッチ）を内蔵したトランスファ１
１と、クラッチ締結力となる制御油圧を発生する制御油
圧発生装置２０と、制御油圧発生装置２０に設けられた
ソレノイドバルブ２８へ各種入力センサ３０からの情報
に基づいて所定のソレノイド駆動電流ｉを出力する油圧
制御手段としてのトルクスプリットコントローラ４０と
を備えて構成される。The drive force distribution control device for optimally controlling the drive force distribution of the front and rear wheels is a wet multi-plate friction clutch 11.
Transfer 1 with built-in a (clutch for torque distribution)
1, a control oil pressure generator 20 that generates a control oil pressure that serves as a clutch engagement force, and a solenoid valve 28 provided in the control oil pressure generator 20 with a predetermined solenoid drive current i based on information from various input sensors 30. And a torque split controller 40 as an oil pressure control means for outputting.
【００２６】前記制御油圧発生装置２０は、リリーフス
イッチ２１により駆動又は停止するモータ２２と、該モ
ータ２２により作動してリザーバタンク２３から作動油
を吸い上げる油圧ポンプ２４と、該油圧ポンプ２４から
のポンプ吐出圧（一次圧）をチェックバルブ２５を介し
て蓄えるアキュムレータ２６と、該アキュムレータ２６
からのライン圧（二次圧）をトルクスプリットコントロ
ーラ４０からのソレノイド駆動電流ｉにより所定の制御
油圧Ｐｃに調整するソレノイドバルブ２８とを備え、制
御油圧Ｐｃの作動油は制御油圧パイプ２９を経由してク
ラッチポートに供給される。そして、前記クラッチポー
トに供給される制御油圧Ｐｃに応じて多板摩擦クラッチ
１１ａのクラッチトルク（締結力）が制御され、該クラ
ッチトルク（締結力）に応じて従動輪である前輪側への
駆動力の分配が制御される。The control oil pressure generating device 20 includes a motor 22 which is driven or stopped by a relief switch 21, a hydraulic pump 24 which is operated by the motor 22 and sucks hydraulic oil from a reservoir tank 23, and a pump from the hydraulic pump 24. An accumulator 26 that stores a discharge pressure (primary pressure) via a check valve 25, and the accumulator 26.
From the torque split controller 40 to a predetermined control oil pressure Pc by a solenoid drive current i from the torque split controller 40, and the hydraulic oil of the control oil pressure Pc passes through the control oil pressure pipe 29. Supplied to the clutch port. Then, the clutch torque (engagement force) of the multi-plate friction clutch 11a is controlled according to the control oil pressure Pc supplied to the clutch port, and is driven to the front wheel side that is a driven wheel according to the clutch torque (engagement force). The distribution of force is controlled.
【００２７】かかる構成において、第１実施形態の多板
摩擦クラッチ１１ａの残存寿命判定装置は次のように構
成される。即ち、図３において、多板摩擦クラッチ１１
ａの差動回転数を検出する差動回転数検出手段としての
差動回転数センサ５０と、多板摩擦クラッチ１１ａの制
御トルクとなる制御油圧Ｐｃを検出する制御油圧検出手
段としての油圧センサ５１と、前記制御油圧Ｐｃの作動
油の温度を検出する油温検出手段としての油温センサ５
２と、多板摩擦クラッチ１１ａの負荷時間（前記差動回
転数発生時間）を計測する時間計測手段と、前記検出さ
れた差動回転数、制御油圧、油温及び差動回転数発生時
間に基づいて多板摩擦クラッチ１１ａの負荷状態を判定
する負荷状態判定手段と、多板摩擦クラッチ１１ａの負
荷状態に基づいて残存寿命を算出する残存寿命算出手段
と、算出された残存寿命を運転者に認知させる表示装置
５４とが設けられており、前記時間計測手段と負荷状態
判定手段と残存寿命算出手段とはコントロールユニット
５３にソフトウェア的に装備される。In such a structure, the remaining life determining device for the multi-plate friction clutch 11a of the first embodiment is constructed as follows. That is, in FIG. 3, the multi-plate friction clutch 11
The differential rotation speed sensor 50 as a differential rotation speed detecting means for detecting the differential rotation speed of a, and the hydraulic pressure sensor 51 as a control hydraulic pressure detecting means for detecting a control hydraulic pressure Pc serving as the control torque of the multi-plate friction clutch 11a. And an oil temperature sensor 5 as oil temperature detecting means for detecting the temperature of the hydraulic oil of the control oil pressure Pc.
2, time measuring means for measuring the load time (the differential rotation speed generation time) of the multi-plate friction clutch 11a, and the detected differential rotation speed, control oil pressure, oil temperature and differential rotation speed generation time. Based on the load state of the multi-plate friction clutch 11a, the load state determination means, the remaining life calculation means for calculating the remaining life based on the load state of the multi-plate friction clutch 11a, and the calculated remaining life to the driver. A display device 54 for recognition is provided, and the time measuring means, the load state determining means, and the remaining life calculating means are installed in the control unit 53 by software.
【００２８】ここで、前記負荷状態判定手段と残存寿命
算出手段の機能について説明する。即ち、前記差動回転
数をΔＮ、制御油圧をＰｃ、油温をＴoil 、差動回転数
発生時間をｔとしたとき、多板摩擦クラッチ１１ａの伝
達トルクＴｃは、次式で演算される。The functions of the load condition determining means and the remaining life calculating means will now be described. That is, when the differential rotation speed is ΔN, the control oil pressure is Pc, the oil temperature is T oil , and the differential rotation speed generation time is t, the transmission torque Tc of the multi-plate friction clutch 11a is calculated by the following equation. .
【００２９】 Ｔｃ＝ｋ1 ・Ｐｃ＋ａ1 （ｋ1 ，ａ1 は定数） 又、多板摩擦クラッチ１１ａの負荷エネルギＥｃは、次
式で演算される。 Ｅｃ＝ｋ2 ・Ｔｃ・ΔＮ（ｋ2 は定数） 更に、多板摩擦クラッチ１１ａのクラッチフェーシング
温度Ｔｅｍｐは、次式で演算される。Tc = k 1 · Pc + a 1 (k 1 and a 1 are constants) The load energy Ec of the multi-plate friction clutch 11a is calculated by the following equation. Ec = k 2 · Tc · ΔN (k 2 is a constant) Furthermore, the clutch facing temperature Temp of the multi-plate friction clutch 11a is calculated by the following equation.
【００３０】 Ｔｅｍｐ＝ｋ3 ・Ｅｃ・ｔ＋Ｔoil （ｋ3 は定数） このようにして求めたＴｅｍｐを、所定温度範囲毎に区
分し、各区分毎の積算時間を計測し、予め判明している
図４の多板摩擦クラッチフェーシングの耐力線図（寿命
線図）よりマイナー則を使って残存寿命を求める。Temp = k 3 · Ec · t + T oil (k 3 is a constant) The Temp thus obtained is divided for each predetermined temperature range, and the accumulated time for each division is measured to be known in advance. The remaining life is calculated using the Miner's law from the proof line diagram (life diagram) of the multi-plate friction clutch facing shown in FIG.
【００３１】即ち、前記積算時間と等価寿命とから残存
寿命の要素であるマイナー値を算出し、マイナー値から
残存寿命を求める。このマイナー値の算出例を、図４の
多板摩擦クラッチフェーシングの耐力線図を参照しつつ
次に説明する。That is, a minor value which is an element of the remaining life is calculated from the integrated time and the equivalent life, and the remaining life is obtained from the minor value. An example of calculating the minor value will be described below with reference to the proof line diagram of the multi-plate friction clutch facing of FIG.
【００３２】例えば、上記区分として、次の（１）〜
（９）の区分を定める。 （１）Ｔｅｍｐ７＜Ｔｅｍｐ≦Ｔｅｍｐ８ （２）Ｔｅｍｐ６＜Ｔｅｍｐ≦Ｔｅｍｐ７ （３）Ｔｅｍｐ５＜Ｔｅｍｐ≦Ｔｅｍｐ６ （４）Ｔｅｍｐ４＜Ｔｅｍｐ≦Ｔｅｍｐ５ （５）Ｔｅｍｐ３＜Ｔｅｍｐ≦Ｔｅｍｐ４ （６）Ｔｅｍｐ２＜Ｔｅｍｐ≦Ｔｅｍｐ３ （７）Ｔｅｍｐ１＜Ｔｅｍｐ≦Ｔｅｍｐ２ （８）Ｔｅｍｐ０＜Ｔｅｍｐ≦Ｔｅｍｐ１ （９）Ｔｅｍｐ≦Ｔｅｍｐ０ 上記各区分での寿命平均値（等価寿命）は、予め判明し
ている多板摩擦クラッチの耐力線図（寿命線図）から予
め設定され、例えば、これが、上記区分（１）〜（９）
毎に対応して次のようになったとする。For example, the following (1)-
Define the category of (9). (1) Temp7 <Temp ≦ Temp8 (2) Temp6 <Temp ≦ Temp7 (3) Temp5 <Temp ≦ Temp6 (4) Temp4 <Temp ≦ Temp5 (5) Temp3 <Temp ≦ Temp4 (6) Temp2 <Temp ≦ Temp3 (6) ) Temp1 <Temp ≦ Temp2 (8) Temp0 <Temp ≦ Temp1 (9) Temp ≦ Temp0 The life average value (equivalent life) in each of the above categories is the load-bearing diagram (lifeline) of the multi-disc friction clutch that is known in advance. (Fig.) Is preset, for example, this is the above-mentioned categories (1) to (9).
For each case, assume the following.
【００３３】（１）の区分 ｔ1 （２）の区分 ｔ2 （３）の区分 ｔ3 （４）の区分 ｔ4 （５）の区分 ｔ5 （６）の区分 ｔ6 （７）の区分 ｔ7 （８）の区分 ｔ8 （９）の区分 ∞ そして、実使用において上記各区分に存ずる時間を積算
する。(1) division t 1 (2) division t 2 (3) division t 3 (4) division t 4 (5) division t 5 (6) division t 6 (7) division Division of t 7 (8) Division of t 8 (9) ∞ Then, in actual use, the time existing in each of the above divisions is integrated.
【００３４】例えば、実使用積算時間が、上記区分
（１）〜（９）毎に対応して、次のようになったとす
る。 （１）の区分 ｔｒ1 （２）の区分 ｔｒ2 （３）の区分 ｔｒ3 （４）の区分 ｔｒ4 （５）の区分 ｔｒ5 （６）の区分 ｔｒ6 （７）の区分 ｔｒ7 （８）の区分 ｔｒ8 （９）の区分 計測なし 各区分毎のマイナー値は、実使用積算時間／等価寿命で
演算され、次のようになる。For example, suppose that the actual use accumulated time is as follows, corresponding to each of the above categories (1) to (9). (1) Segment tr 1 (2) sections tr 2 (3) sections tr 3 (4) sections tr 4 division tr 7 segments tr 6 of (5) Category tr 5 (6) (7) ( 8) Classification tr 8 (9) Classification No measurement The minor value for each classification is calculated by the actual use cumulative time / equivalent life and is as follows.
【００３５】（１）の区分 ｔｒ1 ／ｔ1 （２）の区分 ｔｒ2 ／ｔ2 （３）の区分 ｔｒ3 ／ｔ3 （４）の区分 ｔｒ4 ／ｔ4 （５）の区分 ｔｒ5 ／ｔ5 （６）の区分 ｔｒ6 ／ｔ6 （７）の区分 ｔｒ7 ／ｔ7 （８）の区分 ｔｒ8 ／ｔ8 （９）の区分 演算なし(1) division tr 1 / t 1 (2) division tr 2 / t 2 (3) division tr 3 / t 3 (4) division tr 4 / t 4 (5) division tr 5 / T 5 (6) classification tr 6 / t 6 (7) classification tr 7 / t 7 (8) classification tr 8 / t 8 (9) classification No calculation
【００３６】[0036]
【数１】 [Equation 1]
【００３７】このようにして求めた合計マイナー値は、
多板摩擦クラッチ１１ａの全寿命を１としたときの既に
消費した寿命を表すから、例えば求めたマイナー値が
０．６５であり、現在までの走行距離が７８０００ｋｍ
であるとすると、 （７８０００÷０．６５）−７８０００＝４２０００ が演算され、４２０００ｋｍが走行可能な残り距離、つ
まり多板摩擦クラッチ１１ａの残存寿命となる。そし
て、演算された走行可能な残り距離は、運転席近傍に配
置された表示装置５４に表示される。The total minor value thus obtained is
Since the life already consumed when the total life of the multi-plate friction clutch 11a is set to 1, for example, the obtained minor value is 0.65, and the running distance up to the present is 78000 km.
Then, (78000 ÷ 0.65) −78000 = 42000 is calculated, and 42000 km is the remaining travelable distance, that is, the remaining life of the multi-plate friction clutch 11a. Then, the calculated remaining travelable distance is displayed on the display device 54 arranged near the driver's seat.
【００３８】かかる構成によると、多板摩擦クラッチ１
１ａの差動回転数ΔＮ、制御油圧Ｐｃ、油温Ｔoil 、差
動回転数発生時間ｔに基づいて、多板摩擦クラッチ１１
ａのクラッチフェーシング温度Ｔｅｍｐを演算し、求め
たＴｅｍｐを、所定温度簡易毎に区分し、各区分毎の積
算時間を計測し、予め判明している多板摩擦クラッチフ
ェーシングの耐力線図（寿命線図）よりマイナー則を使
って残存寿命、即ち、走行可能な残り距離を求めて表示
するようにしたから、多板摩擦クラッチ１１ａの残存寿
命（クラッチフェーシング寿命）を知るために、トラン
スファーユニットを車両から降ろし、これを全分解して
内蔵された多板摩擦クラッチ１１ａのクラッチフェーシ
ングの状態を目視にて確認する必要がなく、面倒な作業
が不要となる。According to this structure, the multi-plate friction clutch 1
Based on the differential rotation speed ΔN of 1a, the control oil pressure Pc, the oil temperature T oil , and the differential rotation speed generation time t, the multi-plate friction clutch 11
The clutch facing temperature Temp of a is calculated, and the obtained Temp is divided into predetermined temperature simple sections, and the integrated time of each section is measured, and the load resistance diagram (lifeline of life) of the multi-plate friction clutch facing that is known in advance is calculated. (Fig.) Based on the minor rule, the remaining life, that is, the remaining travelable distance is obtained and displayed. Therefore, in order to know the remaining life (clutch facing life) of the multi-disc friction clutch 11a, the transfer unit is used as a vehicle. It is not necessary to remove it, disassemble it completely, and visually check the state of the clutch facing of the built-in multi-plate friction clutch 11a, thus eliminating troublesome work.
【００３９】又、表示装置５４に表示された残存寿命に
よって多板摩擦クラッチ１１ａの残存寿命を常時正確に
把握することが可能であり，多板摩擦クラッチ１１ａの
交換時期も適切に判断すること可能になり、使用者への
サービス性の向上を図ることができる。Further, the remaining life displayed on the display device 54 can always accurately grasp the remaining life of the multi-disc friction clutch 11a, and it is possible to appropriately judge the replacement time of the multi-disc friction clutch 11a. Therefore, the serviceability to the user can be improved.
【００４０】次に、第２実施形態の多板摩擦クラッチ１
１ａの残存寿命判定装置について、図５から図１０を参
照して説明する。先ず、本実施形態に係る油圧制御手段
としてのトルクスプリットコントローラ４０は、図示し
ないが、駆動力分配制御を行うためのマイクロコンピュ
ータと、このマイクロコンピュータからの制御信号に応
じてソレノイドバルブ２８にソレノイド駆動電流ｉを出
力する駆動回路とを備えている。そして、前記マイクロ
コンピュータは、差動回転数センサ５０、油温センサ５
２の検出信号を読み込むための入力インタフェース回路
と、駆動力分配制御のための演算制御処理等を行う演算
処理装置と、ＲＯＭ、ＲＡＭ等の記憶装置と、演算処理
装置で決定した駆動力分配を制御信号として駆動回路に
出力する出力インタフェース回路等を備えている。Next, the multi-plate friction clutch 1 according to the second embodiment.
The remaining life determining apparatus 1a will be described with reference to FIGS. 5 to 10. First, although not shown, the torque split controller 40 as a hydraulic control means according to the present embodiment is a microcomputer for performing a driving force distribution control, and a solenoid valve 28 is solenoid-driven according to a control signal from the microcomputer. And a drive circuit that outputs a current i. The microcomputer includes a differential rotation speed sensor 50 and an oil temperature sensor 5
The input interface circuit for reading the detection signal of No. 2, an arithmetic processing unit that performs arithmetic control processing for driving force distribution control, a storage device such as ROM and RAM, and the driving force distribution determined by the arithmetic processing unit. An output interface circuit and the like for outputting to the drive circuit as a control signal are provided.
【００４１】また、前述した記憶装置には、演算処理装
置の処理実行に必要なプログラム及び固定データが予め
記憶されているとともに、その処理結果が一時記憶可能
とされている。この内、固定データには、図７から図９
に示すように、駆動力分配制御に必要な記憶テーブルが
記憶されている。即ち、図７は、差動回転数ΔＮに対応
した伝達トルクＴｃの制御特性を示したものである。ま
た、図８は、制御油圧Ｐｃの変化に応じた伝達トルクＴ
ｃの値を示したものである。さらに、図９は、ソレノイ
ド駆動電流ｉの変化に応じた制御油圧Ｐｃの値を示した
ものである。Further, the above-mentioned storage device pre-stores programs and fixed data necessary for the processing execution of the arithmetic processing unit, and the processing results thereof can be temporarily stored. Of these, fixed data includes data from FIG. 7 to FIG.
As shown in, a storage table required for driving force distribution control is stored. That is, FIG. 7 shows the control characteristics of the transmission torque Tc corresponding to the differential rotation speed ΔN. Further, FIG. 8 shows the transmission torque T according to the change of the control oil pressure Pc.
The value of c is shown. Further, FIG. 9 shows the value of the control oil pressure Pc according to the change of the solenoid drive current i.
【００４２】そして、演算処理装置で駆動力分配制御の
プログラムを実行すると、差動回転数ΔＮに基づいて図
７の記憶テーブルを参照することにより伝達トルクＴｃ
が決定され、図８、図９に対応する記憶テーブルを順次
参照して所定のソレノイド駆動電流ｉが逆算され、さら
に駆動回路から所定のソレノイド駆動電流ｉが出力さ
れ、即ち、トルクスプリットコントローラ４０からソレ
ノイドバルブ２８に対して所定のソレノイド駆動電流ｉ
が出力される。When the driving force distribution control program is executed by the arithmetic processing unit, the transmission torque Tc is obtained by referring to the storage table of FIG. 7 based on the differential rotation speed ΔN.
Is determined, the predetermined solenoid drive current i is back-calculated by sequentially referring to the storage tables corresponding to FIGS. 8 and 9, and the predetermined solenoid drive current i is output from the drive circuit, that is, from the torque split controller 40. A predetermined solenoid drive current i for the solenoid valve 28
Is output.
【００４３】ここで、本実施形態の残存寿命判定装置
は、図６の第１実施形態で示した油圧センサ５１による
制御油圧Ｐｃの検出を行わず、前記演算処理装置で算出
したソレノイド駆動電流ｉに対応する制御油圧Ｐｃを使
用する油圧指令値変換手段を備えている。そして、他の
構成は、図２から図４に示した第１実施形態の構成と同
一構成なので、同一符号を付してその説明を省略する。Here, the remaining life determining apparatus of the present embodiment does not detect the control oil pressure Pc by the oil pressure sensor 51 shown in the first embodiment of FIG. 6, but the solenoid drive current i calculated by the arithmetic processing unit. Is provided with a hydraulic pressure command value conversion means that uses the control hydraulic pressure Pc corresponding to. Since other configurations are the same as the configurations of the first embodiment shown in FIGS. 2 to 4, the same reference numerals are given and the description thereof is omitted.
【００４４】本実施形態に備えた油圧指令値変換手段
は、図１０に示すフローチャートを前述した演算処理装
置が実行する。この演算処理は、所定時間毎のタイマ割
込によって実行され、先ず、ステップＳ１において、出
力されたソレノイド駆動電流ｉを読込む。次いで、ステ
ップＳ２において、図９の記憶テーブルを参照して読み
込んだソレノイド駆動電流ｉに対応する制御油圧Ｐｃを
検索する。次いで、ステップＳ３において、検索した制
御油圧Ｐｃを負荷状態判定手段の判定データとして出力
する。The hydraulic pressure command value converting means provided in the present embodiment is executed by the arithmetic processing unit described above in the flowchart shown in FIG. This calculation process is executed by a timer interrupt at predetermined time intervals. First, in step S1, the output solenoid drive current i is read. Next, in step S2, the control hydraulic pressure Pc corresponding to the read solenoid drive current i is searched by referring to the storage table of FIG. Next, in step S3, the retrieved control oil pressure Pc is output as the determination data of the load state determination means.
【００４５】かかる構成によると、残存寿命判定装置に
必要な制御油圧Ｐｃの情報を、油圧センサ５１を使用せ
ずにトルクスプリットコントローラ４０の記憶装置から
得ることができるので、センサ数が減少して装置コスト
の低減化を図ることができる。その他の作用効果は、第
１実施形態と同様である。According to this structure, the information of the control oil pressure Pc necessary for the remaining life determining device can be obtained from the storage device of the torque split controller 40 without using the oil pressure sensor 51, so that the number of sensors is reduced. It is possible to reduce the device cost. Other functions and effects are similar to those of the first embodiment.
【００４６】次に、第３実施形態の多板摩擦クラッチ１
１ａの残存寿命判定装置について、図１１を参照して説
明する。なお、図２から図４で示した第１実施形態の構
成と同一構成部分は、同一符号を付してその説明を省略
する。Next, the multi-plate friction clutch 1 according to the third embodiment.
The remaining life determining apparatus 1a will be described with reference to FIG. The same components as those of the first embodiment shown in FIGS. 2 to 4 are designated by the same reference numerals and the description thereof will be omitted.
【００４７】本実施形態の残存寿命判定装置は、残存寿
命を算出する残存寿命算出手段に、診断用コネクタ５５
が電気的に接続されている。この診断用コネクタ５５
は、車両のエンジンルーム内に配設されており、図中符
号５６で示す診断装置の接続端子５６ａを前記診断用コ
ネクタ５５に接続すると、残存寿命算出手段が算出した
残存寿命を、表示部５６ｂに表示するようになってい
る。なお、診断装置５６は、本発明の外部診断装置を構
成している。In the remaining life determining apparatus of this embodiment, the remaining life calculation means for calculating the remaining life includes a diagnostic connector 55.
Are electrically connected. This diagnostic connector 55
Is disposed in the engine room of the vehicle, and when the connection terminal 56a of the diagnostic device indicated by reference numeral 56 in the figure is connected to the diagnostic connector 55, the remaining life calculated by the remaining life calculation means is displayed on the display unit 56b. It is supposed to be displayed. The diagnostic device 56 constitutes the external diagnostic device of the present invention.
【００４８】かかる構成によると、必ずしも運転席近傍
に表示装置５４を配置しなくとも、車両の定期点検等の
際に、エンジンルーム内の診断用コネクタ５５に診断装
置５６を接続するだけで、表示部５６ｂに表示された残
存寿命によって多板摩擦クラッチ１１ａの残存寿命を常
時正確に把握することが可能であり，多板摩擦クラッチ
１１ａの交換時期も適切に判断すること可能になり、使
用者へのサービス性の向上を図ることができる。According to this structure, even if the display device 54 is not necessarily arranged near the driver's seat, the display can be made by simply connecting the diagnostic device 56 to the diagnostic connector 55 in the engine room at the time of periodic inspection of the vehicle. The remaining life displayed on the portion 56b enables the remaining life of the multi-plate friction clutch 11a to be accurately grasped at all times, and the replacement time of the multi-plate friction clutch 11a can be appropriately determined. The serviceability of can be improved.
【００４９】また、診断装置５６に出力するだけの情報
を有していればよいので、演算部、制御部、記憶部等の
容量の小さなコントロールユニット５３とすることがで
きる。その他の作用効果は、第１実施形態と同様であ
る。Further, since it is sufficient to have the information to be output to the diagnostic device 56, the control unit 53 having a small capacity such as the arithmetic unit, the control unit and the storage unit can be obtained. Other functions and effects are similar to those of the first embodiment.
【００５０】次に、第４実施形態の多板摩擦クラッチ１
１ａの残存寿命判定装置について、図１２を参照して説
明する。なお、この実施形態も、図２から図４で示した
第１実施形態の構成と同一構成部分には同一符号を付し
てその説明を省略する。Next, the multi-plate friction clutch 1 of the fourth embodiment.
The remaining life determining apparatus 1a will be described with reference to FIG. Also in this embodiment, the same components as those of the first embodiment shown in FIGS. 2 to 4 are designated by the same reference numerals and the description thereof will be omitted.
【００５１】本実施形態の残存寿命判定装置にあって
は、多板摩擦クラッチ１１ａの負荷状態を判定する負荷
状態判定手段に、車両のエンジンルーム内に配設された
診断用コネクタ５５が電気的に接続されている。In the remaining life determining apparatus of this embodiment, the diagnostic connector 55 arranged in the engine room of the vehicle is electrically connected to the load condition determining means for determining the load condition of the multi-disc friction clutch 11a. It is connected to the.
【００５２】また、この診断用コネクタ５５に、診断装
置５７の接続端子５７ａが接続可能とされているが、こ
の診断装置５７には、前記負荷状態判定手段から出力さ
れた負荷状態に基づいて残存寿命を算出する残存寿命算
出手段が内蔵されている。なお、診断装置５７は、本発
明の外部診断装置を構成している。The connection terminal 57a of the diagnostic device 57 can be connected to the diagnostic connector 55, but the diagnostic device 57 remains on the basis of the load condition output from the load condition determining means. The remaining life calculation means for calculating the life is built in. The diagnostic device 57 constitutes the external diagnostic device of the present invention.
【００５３】これにより、診断装置の接続端子５７ａを
前記診断用コネクタ５５に接続すると、残存寿命算出手
段が残存寿命を算出して表示部５７ｂに表示する。かか
る構成によると、車両の定期点検等の際に、エンジンル
ーム内の診断用コネクタ５５に診断装置５７を接続する
だけで、表示部５７ｂに表示された残存寿命によって多
板摩擦クラッチ１１ａの残存寿命を常時正確に把握する
ことが可能であり，多板摩擦クラッチ１１ａの交換時期
も適切に判断可能となって使用者へのサービス性の向上
を図ることができる。Thus, when the connection terminal 57a of the diagnostic device is connected to the diagnostic connector 55, the remaining life calculation means calculates the remaining life and displays it on the display unit 57b. With such a configuration, when the vehicle is regularly inspected or the like, simply by connecting the diagnostic device 57 to the diagnostic connector 55 in the engine room, the remaining life of the multi-plate friction clutch 11a can be obtained by the remaining life displayed on the display portion 57b. Can be accurately grasped at all times, and the replacement timing of the multi-plate friction clutch 11a can be appropriately determined, so that the serviceability to the user can be improved.
【００５４】また、残存寿命算出手段は診断装置５７に
内蔵されているので、演算部、制御部、記憶部等の容量
のさらに小さなコントロールユニット５３とすることが
できる。その他の作用効果は、第１実施形態と同様であ
る。Further, since the remaining life calculation means is built in the diagnostic device 57, the control unit 53 having a smaller capacity such as an arithmetic unit, a control unit and a storage unit can be used. Other functions and effects are similar to those of the first embodiment.
【００５５】なお、上記第３及び第４実施形態では、第
１実施形態を構成する表示装置５４に代えて、診断用コ
ネクタ５５、診断装置５６、５７を備えた構成について
説明したが、本発明の要旨がこれに限るものではなく、
例えば第２実施形態の構成に診断用コネクタ５５、診断
装置５６、５７を備えても、同様の作用効果を得ること
ができる。In the third and fourth embodiments described above, the configuration provided with the diagnostic connector 55 and the diagnostic devices 56 and 57 in place of the display device 54 constituting the first embodiment has been described. Is not limited to this,
For example, even if the diagnostic connector 55 and the diagnostic devices 56 and 57 are provided in the configuration of the second embodiment, similar operational effects can be obtained.
【図１】本発明の請求項１記載の発明を示す構成図であ
る。FIG. 1 is a configuration diagram showing an invention according to claim 1 of the present invention.
【図２】多板摩擦クラッチの残存寿命判定装置が適用さ
れる４輪駆動車における駆動系の全体システムを示す図
である。FIG. 2 is a diagram showing an overall system of a drive system in a four-wheel drive vehicle to which a remaining life determining device for a multi-plate friction clutch is applied.
【図３】本発明の第１実施形態の多板摩擦クラッチの残
存寿命判定装置の構成を示すブロック図である。FIG. 3 is a block diagram showing a configuration of a remaining life determining apparatus for a multi-plate friction clutch according to the first embodiment of the present invention.
【図４】多板摩擦クラッチフェーシングの耐力（寿命）
を示す図表である。[Fig. 4] Proof strength (life) of multi-plate friction clutch facing
FIG.
【図５】本発明の請求項２記載の発明を示す構成図であ
る。FIG. 5 is a configuration diagram showing an invention according to claim 2 of the present invention.
【図６】本発明の第２実施形態の多板摩擦クラッチの残
存寿命判定装置の構成を示すブロック図である。FIG. 6 is a block diagram showing a configuration of a remaining life determining apparatus for a multi-plate friction clutch according to a second embodiment of the present invention.
【図７】油圧制御装置が制御トルクを出力する際に参照
する伝達トルクの制御特性図表である。FIG. 7 is a control characteristic chart of transmission torque that is referred to when the hydraulic control device outputs control torque.
【図８】油圧制御装置が制御トルクを出力する際に参照
する伝達トルク及び制御油圧の対応データ図表である。FIG. 8 is a corresponding data chart of transmission torque and control hydraulic pressure that is referred to when the hydraulic control device outputs control torque.
【図９】油圧制御装置が制御トルクを出力する際に参照
する制御油圧及び制ソレノイド駆動電流の対応データ図
表である。FIG. 9 is a corresponding data diagram of control hydraulic pressure and braking solenoid drive current that the hydraulic control device refers to when outputting control torque.
【図１０】本発明の第２実施形態に係る油圧指令値変換
手段を示すフローチャートである。FIG. 10 is a flowchart showing a hydraulic pressure command value conversion means according to a second embodiment of the present invention.
【図１１】本発明の第３実施形態の多板摩擦クラッチの
残存寿命判定装置の構成を示すブロック図である。FIG. 11 is a block diagram showing a configuration of a remaining life determining apparatus for a multi-plate friction clutch according to a third embodiment of the present invention.
【図１２】本発明の第４実施形態の多板摩擦クラッチの
残存寿命判定装置の構成を示すブロック図である。FIG. 12 is a block diagram showing a configuration of a remaining life determining apparatus for a multi-plate friction clutch according to a fourth embodiment of the present invention.
１１ａ 湿式多板摩擦クラッチ ２０ 制御油圧発生装置 ４０ トルクスプリットコントローラ ５０ 差動回転数センサ ５１ 油圧センサ ５２ 油温センサ ５４ 表示装置 ５５ 診断用コネクタ ５６、５７ 診断装置（外部診断装置） ５６ａ、５７ａ 接続端子 ５６ｂ、５７ｂ 表示部 ΔＮ 差動回転数 Ｐｃ 制御油圧 Ｔoil 油温 ｔ 差動回転数発生時間 Ｔｃ 伝達トルク Ｅｃ 負荷エネルギ Ｔｅｍｐ クラッチフェーシング温度11a Wet multi-plate friction clutch 20 Control oil pressure generator 40 Torque split controller 50 Differential rotation speed sensor 51 Oil pressure sensor 52 Oil temperature sensor 54 Display device 55 Diagnostic connector 56, 57 Diagnostic device (external diagnostic device) 56a, 57a Connection terminal 56b, 57b Display section ΔN Differential rotation speed Pc Control oil pressure T oil Oil temperature t Differential rotation speed generation time Tc Transmission torque Ec Load energy Temp Clutch facing temperature
Claims (8)
にて得る多板摩擦クラッチにおいて、 多板摩擦クラッチの差動回転数を検出する差動回転数検
出手段と、多板摩擦クラッチの制御トルクとなる制御油
圧を検出する制御油圧検出手段と、前記制御油圧の作動
油の温度を検出する油温検出手段と、多板摩擦クラッチ
の負荷時間を計測する負荷時間計測手段と、前記検出さ
れた差動回転数、制御油圧、油温及び負荷時間に基づい
て多板摩擦クラッチの負荷状態を判定する負荷状態判定
手段と、前記多板摩擦クラッチの負荷状態に基づいて残
存寿命を算出する残存寿命算出手段と、を含んで構成さ
れたことを特徴とする多板摩擦クラッチの残存寿命判定
装置。1. A multi-disc friction clutch that obtains a control torque as a clutch engagement force by hydraulic pressure, and a differential revolution number detecting means for detecting a differential revolution number of the multi-disc friction clutch, and a control torque of the multi-disc friction clutch. Control oil pressure detecting means for detecting the control oil pressure, oil temperature detecting means for detecting the temperature of the hydraulic oil of the control oil pressure, load time measuring means for measuring the load time of the multi-disc friction clutch, and the detected Load state determination means for determining the load state of the multi-disc friction clutch based on the differential rotation speed, control oil pressure, oil temperature and load time, and the remaining life for calculating the remaining life based on the load state of the multi-disc friction clutch A remaining life determining device for a multi-disc friction clutch, comprising: a calculating unit.
にて得る多板摩擦クラッチにおいて、 多板摩擦クラッチの差動回転数を検出する差動回転数検
出手段と、油圧制御手段が出力する制御トルクの指令値
を制御油圧の値に変換する油圧指令値変換手段と、前記
制御油圧の作動油の温度を検出する油温検出手段と、多
板摩擦クラッチの負荷時間を計測する負荷時間計測手段
と、前記検出された差動回転数、油温、負荷時間と、前
記油圧指令値変換手段に変換された制御油圧とに基づい
て多板摩擦クラッチの負荷状態を判定する負荷状態判定
手段と、前記多板摩擦クラッチの負荷状態に基づいて残
存寿命を算出する残存寿命算出手段と、を含んで構成さ
れたことを特徴とする多板摩擦クラッチの残存寿命判定
装置。2. A multi-disc friction clutch that obtains a control torque, which is a clutch engagement force, by hydraulic pressure, and a differential rotation speed detection means for detecting a differential rotation speed of the multi-disc friction clutch, and a control output by the hydraulic control means. A hydraulic pressure command value converting means for converting a torque command value to a control hydraulic pressure value, an oil temperature detecting means for detecting the temperature of the hydraulic oil of the control hydraulic pressure, and a load time measuring means for measuring the load time of the multi-disc friction clutch. And a load state determination unit that determines the load state of the multi-plate friction clutch based on the detected differential rotation speed, oil temperature, load time, and the control oil pressure converted by the oil pressure command value conversion unit, A remaining life determining device for a multi-disc friction clutch, comprising: a remaining life calculation means for calculating a remaining life based on a load state of the multi-disc friction clutch.
から多板摩擦クラッチの伝達トルクを演算し、該伝達ト
ルクと差動回転数とから多板摩擦クラッチの負荷エネル
ギを演算し、該負荷エネルギと負荷時間と油温から、負
荷状態としての多板摩擦クラッチのクラッチフェーシン
グ温度を演算する手段から構成されたことを特徴とする
請求項１又は２記載の多板摩擦クラッチの残存寿命判定
装置。3. The load condition determining means calculates a transmission torque of the multi-disc friction clutch from the control hydraulic pressure, calculates load energy of the multi-disc friction clutch from the transmission torque and a differential rotation speed, and calculates the load energy. 3. The remaining life determining apparatus for a multi-disc friction clutch according to claim 1, further comprising means for calculating a clutch facing temperature of the multi-disc friction clutch as a load state from energy, load time and oil temperature. .
ッチのクラッチフェーシング温度を、所定温度範囲毎に
区分し、各区分毎の積算時間を計測し、該積算時間と予
め判明している多板摩擦クラッチフェーシングの寿命線
図から求められる各区分毎の等価寿命とから残存寿命の
要素であるマイナー値を算出する手段から構成されたこ
とを特徴とする請求項３記載の多板摩擦クラッチの残存
寿命判定装置。4. The remaining life calculation means divides the clutch facing temperature of the multi-plate friction clutch into predetermined temperature ranges, measures an integrated time for each division, and determines the integrated time in advance. 4. The multi-plate friction clutch according to claim 3, further comprising means for calculating a minor value which is an element of the remaining life from the equivalent life of each section obtained from the life diagram of the plate friction clutch facing. Remaining life judgment device.
離をＢとしたとき、次式に基づいて、走行可能な残り距
離Ｃを求める手段を備えたことを特徴とする請求項４記
載の多板摩擦クラッチの残存寿命判定装置。 Ｃ＝（Ｂ÷Ａ）−Ｂ5. The method according to claim 4, further comprising means for obtaining a remaining travelable distance C based on the following equation, where A is the minor value and B is the travel distance up to the present time. Multi-disc friction clutch remaining life determination device. C = (B ÷ A) -B
れて運転者が認知することが可能な表示装置に出力する
ことを特徴とする請求項１乃至５のいずれかに記載の多
板摩擦クラッチの残存寿命判定装置。6. The multi-purpose display according to claim 1, wherein the remaining life is output to a display device provided near a driver's seat and recognizable by a driver. A device for determining the remaining life of a plate friction clutch.
を接続しておき、この診断用コネクタに外部診断装置の
接続端子を接続することにより、前記外部診断装置の表
示部に前記残存寿命を適宜出力可能とすることを特徴と
する請求項１乃至５のいずれかに記載の多板摩擦クラッ
チの残存寿命判定装置。7. A diagnostic connector is connected to the residual life calculation means, and a connection terminal of an external diagnostic device is connected to the diagnostic connector, so that the residual life is appropriately displayed on the display unit of the external diagnostic device. The remaining life determining device for a multi-disc friction clutch according to any one of claims 1 to 5, wherein the device is capable of outputting.
を接続しておき、この診断用コネクタに、前記残存寿命
算出手段を備えた外部診断装置の接続端子を接続するこ
とにより、前記外部診断装置の表示部に前記残存寿命を
適宜出力可能とすることを特徴とする請求項１乃至５の
いずれかに記載の多板摩擦クラッチの残存寿命判定装
置。8. The external diagnostic device by connecting a diagnostic connector to the load condition judging means, and connecting a connecting terminal of the external diagnostic device having the residual life calculating means to the diagnostic connector. The remaining life determining device for a multi-disc friction clutch according to any one of claims 1 to 5, wherein the remaining life can be appropriately output to the display section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05191096A JP3348590B2 (en) | 1995-03-09 | 1996-03-08 | Multi-plate friction clutch remaining life determination device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4986795 | 1995-03-09 | ||
| JP7-49867 | 1995-03-09 | ||
| JP05191096A JP3348590B2 (en) | 1995-03-09 | 1996-03-08 | Multi-plate friction clutch remaining life determination device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08303485A true JPH08303485A (en) | 1996-11-19 |
| JP3348590B2 JP3348590B2 (en) | 2002-11-20 |
Family
ID=26390314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05191096A Expired - Fee Related JP3348590B2 (en) | 1995-03-09 | 1996-03-08 | Multi-plate friction clutch remaining life determination device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3348590B2 (en) |
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| JPH11287257A (en) * | 1998-03-31 | 1999-10-19 | Toyota Motor Corp | Temperature estimation device for vehicular frictional engaging device |
| JP2004225841A (en) * | 2003-01-24 | 2004-08-12 | Nissan Diesel Motor Co Ltd | Managing device for operation information |
| JP2005247274A (en) * | 2004-03-08 | 2005-09-15 | Tokyu Car Corp | Monitoring device |
| JP2006234155A (en) * | 2005-02-21 | 2006-09-07 | Isuzu Motors Ltd | Vehicle clutch evaluation system |
| JP2009115796A (en) * | 2007-11-02 | 2009-05-28 | Avl List Gmbh | Method for damage forecast of component of motor vehicle |
| JP2009292430A (en) * | 2008-06-09 | 2009-12-17 | Toyota Motor Corp | Protection device for power transmitting mechanism |
| JP2010065795A (en) * | 2008-09-12 | 2010-03-25 | Mitsubishi Heavy Ind Ltd | Method and device for diagnosis of clutch failure of industrial vehicle |
| JP2013139244A (en) * | 2011-12-07 | 2013-07-18 | Denso Corp | Vehicular power transmission device |
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