JPH0323629U

JPH0323629U -

Info

Publication number: JPH0323629U
Application number: JP8390189U
Authority: JP
Priority date: 1989-07-17
Filing date: 1989-07-17
Publication date: 1991-03-12
Anticipated expiration: 2004-07-17
Also published as: JP2507647Y2

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る駆動輪スリツ
プ制御装置及び該制御装置の異常処理装置の全体
構成図、第２図は駆動輪スリツプ検出用電子コン
トロールユニツト（ＴＣＳ−ＥＣＵ）の内部構成
を示すブロツク図、第３図は駆動輪スリツプ制御
を行うプログラムフローチヤート、第４図は駆動
輪スリツプ制御装置内部の第１の信号線（ＴＣＦ
Ｃ線）の異常を検知するプログラムのフローチヤ
ート、第５図はスリツプレベル（ＳＬＶＬ）とト
ラクシヨン制御レベル及びステータス信号のレベ
ルとの関係を示す図、第６図はトラクシヨン制御
レベル（ＴＣレベル）に応じて空燃比リーン化を
行う気筒及びフユエルカツトを行う気筒を決定す
るためのテーブルを示す図、第７図はＴＣＦＣ線
の異常検知時のＴＣレベル選定を行うプログラム
のフローチヤート、第８図はＴＣＳ−ＥＣＵの起
動チエツクを行うプログラムのフローチヤート、
第９図は駆動輪スリツプ制御装置内部の第２の信
号線（ＴＣＳＴＢ線）の異常及びＴＣＦＣ線の中
間値固定異常を検知するプログラムのフローチヤ
ート、第１０図はトラクシヨン制御を停止すべき
か否かを判定するプログラムのフローチヤート、
第１１図は駆動輪スリツプ制御装置内部の第３の
信号線（ＴＣＩＮＨ線）に出力する信号を制御す
るプログラムのフローチヤート、第１２図はＴＣ
ＩＮＨ線上の信号（ＴＣ指令信号）に応じた制御
の一例を示す図である。１……内燃エンジン（原動機）、５……エンジ
ン制御用電子コントロールユニツト（ＥＮＧ−Ｅ
ＣＵ）、２０……駆動輪スリツプ検出用電子コン
トロールユニツト（ＴＣＳ−ＥＣＵ）、２１，２
２……駆動輪速度センサ、２３，２４……従動輪
速度センサ。 Fig. 1 is an overall configuration diagram of a drive wheel slip control device and an abnormality handling device of the control device according to an embodiment of the present invention, and Fig. 2 is an internal configuration of an electronic control unit (TCS-ECU) for detecting drive wheel slip. 3 is a program flowchart for controlling the drive wheel slip, and FIG. 4 is a block diagram showing the first signal line (TCF) inside the drive wheel slip control device.
A flowchart of a program for detecting an abnormality in line C). Figure 5 shows the relationship between the slip level (SLVL), traction control level and status signal level, and Figure 6 shows the relationship between the slip level (SLVL) and the traction control level (TC level). Figure 7 is a flowchart of a program for selecting the TC level when an abnormality is detected in the TCFC line. - Flowchart of a program that performs a start-up check of the ECU;
Fig. 9 is a flowchart of a program that detects an abnormality in the second signal line (TCSTB line) inside the drive wheel slip control device and an abnormality in fixing the intermediate value of the TCFC line, and Fig. 10 shows whether or not traction control should be stopped. A flowchart of a program that determines
Figure 11 is a flowchart of a program that controls the signal output to the third signal line (TCINH line) inside the drive wheel slip control device, and Figure 12 is a flowchart of a program that controls the signal output to the third signal line (TCINH line) inside the drive wheel slip control device.
FIG. 6 is a diagram showing an example of control according to a signal (TC command signal) on the INH line. 1...Internal combustion engine (prime mover), 5...Electronic control unit for engine control (ENG-E)
CU), 20... Electronic control unit for drive wheel slip detection (TCS-ECU), 21, 2
2... Drive wheel speed sensor, 23, 24... Driven wheel speed sensor.

Claims

[Scope of claim for utility model registration] 1. Detecting excessive slip of the drive wheels of a vehicle,
a first control unit having a level signal generating means for generating a level signal representing a slip state of the driving wheel; a prime mover output reducing means for reducing the output of a prime mover connected to the driving wheel in accordance with the level signal; In an abnormality processing device for a driving wheel slip control device, the abnormality processing device includes a second control unit to which the level signal is input and has an abnormality determination means for determining abnormality of the level signal, which determines whether or not the motor output reduction means is operable. a first state in which the level signal is abnormal according to the outputs of the actuation determination means and the actuation determination means; and a first state in which the level signal is normal but the prime mover output reduction means is inoperable. and a notification means for discriminating and notifying the first control unit between a second state in which the level signal is normal and a third state in which the motor output reduction means is operable. 1. An abnormality processing device for a drive wheel slip control device, characterized in that it is provided in a second control unit. 2. The driving wheel slip according to claim 1, wherein the first control unit stops calculation in the first control unit when notified that the first or second state is present. Abnormality processing device for control equipment. 3. A display means is provided for displaying which of the first to third states the state is in, and the first control unit is configured to drive the display means in accordance with the notification content from the notification means. An abnormality processing device for a drive wheel slip control device according to claim 1 or 2. 4. The abnormality processing device for a driving wheel slip control device according to claim 1, wherein the abnormality determining means makes the determination based on the level signal at the time when power supply to the driving wheel slip control device is started. 5. Claim 1, wherein the actuation determination means includes a prime mover control sensor abnormality determining means for determining when a sensor essential for controlling the prime mover is abnormal.
5. An abnormality processing device for a drive wheel slip control device according to any one of 4 to 4.