JPH08295229A - Controlling method for pump for use in negative-pressure brake - Google Patents
Controlling method for pump for use in negative-pressure brakeInfo
- Publication number
- JPH08295229A JPH08295229A JP10634995A JP10634995A JPH08295229A JP H08295229 A JPH08295229 A JP H08295229A JP 10634995 A JP10634995 A JP 10634995A JP 10634995 A JP10634995 A JP 10634995A JP H08295229 A JPH08295229 A JP H08295229A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- negative pressure
- time
- applied voltage
- failure determination
- 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
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、電気自動車等に装備さ
れた負圧ブレーキ（バキュームサーボブレーキ）を作動
させる負圧を発生する電動式ポンプの制御方法で、特
に、発生した負圧が上限に達する動作領域でのポンプ制
御方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric pump control method for generating a negative pressure for operating a negative pressure brake (vacuum servo brake) mounted on an electric vehicle or the like. To a pump control method in an operating range reaching up to.
【０００２】[0002]
【従来の技術】電気自動車等に装備された負圧ブレーキ
は、電気自動車の主電池あるいは補助電池の電圧印加で
駆動する電動式ポンプ（バキュームポンプ）で発生させ
た負圧で作動する。負圧ブレーキ用ポンプで発生させた
負圧は、バキュームタンクに蓄えられて負圧ブレーキに
与えられる。バキュームタンクに負圧が所定の上限値ま
で蓄えられると、これをセンサが検出してポンプが停止
し、バキュームタンクの負圧がブレーキ操作等で所定の
下限まで低下すると、これをセンサが検出してポンプが
再度駆動開始して、負圧を上限値まで上昇させる。2. Description of the Related Art A negative pressure brake mounted on an electric vehicle or the like operates by a negative pressure generated by an electric pump (vacuum pump) driven by applying a voltage to a main battery or an auxiliary battery of the electric vehicle. The negative pressure generated by the negative pressure brake pump is stored in a vacuum tank and given to the negative pressure brake. When negative pressure is stored in the vacuum tank up to a predetermined upper limit value, the sensor detects it and the pump stops.When the negative pressure in the vacuum tank drops to a predetermined lower limit due to brake operation, etc., the sensor detects it. The pump starts driving again, and the negative pressure is raised to the upper limit value.
【０００３】かかる電動式ポンプの駆動制御は、例えば
図３に示すようなマイクロコンピュータのコントロール
ユニット１で自動的に行われている。コントロールユニ
ット１の入力インターフェース２にセンサ出力である負
圧検出信号が入力されると、これをＣＰＵ３が読み込ん
でＲＡＭ５やＲＯＭ６に記憶されたデータで演算処理す
る。例えば、ＣＰＵ３が負圧検出信号から負圧が下限値
に達したと判断すると、出力インターフェース４を介し
てポンプ駆動信号を出力してポンプが駆動開始し、ＣＰ
Ｕ３が負圧検出信号から負圧が上限値に達したと判断す
ると、ポンプ停止信号が出力されてポンプが停止する。Drive control of such an electric pump is automatically performed by a control unit 1 of a microcomputer as shown in FIG. 3, for example. When a negative pressure detection signal, which is a sensor output, is input to the input interface 2 of the control unit 1, the CPU 3 reads it and processes it with the data stored in the RAM 5 or the ROM 6. For example, when the CPU 3 determines from the negative pressure detection signal that the negative pressure has reached the lower limit value, the pump drive signal is output via the output interface 4 to start driving the pump, and the CP
When U3 determines from the negative pressure detection signal that the negative pressure has reached the upper limit value, the pump stop signal is output and the pump stops.
【０００４】電気自動車の電池の電圧印加で駆動する負
圧ブレーキ用ポンプにおいては、電気自動車の走行等の
使用条件の変化で電池の電圧が変動し、この電圧変動が
そのままポンプ能力変動に直結する。このポンプ印加電
圧が高くなるとポンプ能力が増して負圧ブレーキの負圧
を早期に上昇させ、ポンプ印加電圧が低くなるとポンプ
能力が低下して負圧ブレーキの負圧の上昇速度が遅くな
る。従って、ポンプ駆動が開始して負圧ブレーキの負圧
が所定の上限値に達するまでのポンプ駆動時間である負
圧充填完了時間は、ポンプの印加電圧が高いほど短くな
り、ポンプの印加電圧が低くなるほど長くなる。このポ
ンプ印加電圧と負圧充填完了時間の関係は、図４の実線
グラフＧ1 に示すように反比例的な関係となる。In a negative pressure brake pump driven by applying a voltage to a battery of an electric vehicle, the voltage of the battery fluctuates due to changes in operating conditions such as running of the electric vehicle, and this voltage fluctuation is directly connected to fluctuations in pump capacity. . When the pump applied voltage is increased, the pump capacity is increased to increase the negative pressure of the negative pressure brake early, and when the pump applied voltage is decreased, the pump capacity is decreased and the negative pressure increase speed of the negative pressure brake is decreased. Therefore, the negative pressure filling completion time, which is the pump driving time until the negative pressure of the negative pressure brake reaches the predetermined upper limit value, starts to decrease when the voltage applied to the pump is high. The lower the length, the longer the length. The relationship between the pump applied voltage and the negative pressure filling completion time is inversely proportional as shown by the solid line graph G1 in FIG.
【０００５】図３の負圧検出信号は、負圧ブレーキのバ
キュームタンクに蓄えられた負圧を検出するセンサ信号
であり、この負圧検出信号でポンプ駆動が開始して負圧
が上限値に達した時点が検出されるようにしてあるが、
バキュームタンクのエア漏れや、センサ等で構成される
ポンプの駆動制御系等に何らかの故障が発生して、負圧
検出信号が無くなり、負圧の上限が検出されないと、ポ
ンプ駆動が負圧充填完了時間経過後も続行される不具合
が生じる。そこで、この不具合発生を回避するため、ポ
ンプの駆動時間をタイマーで計測しておき、ポンプ駆動
時間が負圧充填完了時間を超えると、制御系等に故障が
発生したと判定して、ポンプを積極的に停止させるよう
にしている。このような制御は、図３のコントロールユ
ニット１のＲＯＭ６に負圧充填完了時間に基づく一定の
故障判定時間を記憶させておき、この故障判定時間とタ
イマーからのポンプ駆動時間を逐一比較等して演算処理
することで行われている。The negative pressure detection signal shown in FIG. 3 is a sensor signal for detecting the negative pressure stored in the vacuum tank of the negative pressure brake. The negative pressure detection signal causes the pump drive to start and the negative pressure reaches the upper limit value. I tried to detect when it reached,
If the negative pressure detection signal disappears and the upper limit of negative pressure is not detected due to air leak in the vacuum tank or some failure in the drive control system of the pump, which is composed of sensors, etc., pump drive is completed with negative pressure filling. There is a problem that it will continue even after the lapse of time. Therefore, in order to avoid this problem, the drive time of the pump is measured with a timer, and if the pump drive time exceeds the negative pressure filling completion time, it is determined that a failure has occurred in the control system etc. I try to stop it actively. In such control, the ROM 6 of the control unit 1 of FIG. 3 stores a predetermined failure determination time based on the negative pressure filling completion time, and compares the failure determination time with the pump drive time from the timer one by one. It is performed by performing arithmetic processing.
【０００６】[0006]
【発明が解決しようとする課題】負圧ブレーキ用電動式
ポンプの印加電圧と負圧充填完了時間は図４に示すよう
な反比例的な関係にあり、印加電圧が最小Ｖａのときの
負圧充填完了時間Ｐｎが最も長く、印加電圧が最大Ｖｂ
のときの負圧充填完了時間Ｐｍが最も短い。このような
場合、コントロールユニット１によるポンプ制御におい
ては、ＲＯＭ６に記憶させる故障判定時間を、最も長い
負圧充填完了時間Ｐｎに合わせて設定しておく必要があ
って、図４の鎖線に示す位置に一定の故障判定時間Ｔ’
を設定していた。その理由は、仮に故障判定時間Ｔ’を
最大の負圧充填完了時間Ｐｎより短めに設定すると、ポ
ンプの印加電圧が最小Ｖａのときにポンプが負圧充填完
了時間Ｐｎまで駆動しない前に故障判定が行われて、負
圧充填ができなくなり、負圧ブレーキの制動能力が低下
する不具合が発生するためである。The applied voltage of the negative pressure brake electric pump and the negative pressure filling completion time are in an inversely proportional relationship as shown in FIG. 4, and the negative pressure filling is performed when the applied voltage is the minimum Va. The completion time Pn is the longest, and the applied voltage is the maximum Vb.
At this time, the negative pressure filling completion time Pm is the shortest. In such a case, in the pump control by the control unit 1, it is necessary to set the failure determination time to be stored in the ROM 6 according to the longest negative pressure filling completion time Pn, and the position shown by the chain line in FIG. Constant failure determination time T '
Had been set. The reason is that if the failure determination time T ′ is set shorter than the maximum negative pressure filling completion time Pn, the failure determination is performed before the pump is driven to the negative pressure filling completion time Pn when the applied voltage of the pump is the minimum Va. This is because the negative pressure cannot be filled and the braking ability of the negative pressure brake is reduced.
【０００７】上記のように一定の故障判定時間Ｔ’を設
定してポンプ駆動制御を行うと、ポンプ印加電圧が低い
場合はあまり問題ないが、ポンプ印加電圧が高くなるほ
どに故障判定が遅れる割合が高くなる問題が発生してい
た。例えば、図４におけるポンプ印加電圧が最大Ｖｂの
ときの負圧充填完了時間Ｐｍと、ポンプ印加電圧が最小
Ｖａのときの負圧充填完了時間Ｐｎの差は、通常の電気
自動車の場合で約２０秒であり、この場合、ポンプ印加
電圧最大Ｖｂのときに故障判定が行われるのが、負圧充
填が完了してから約２０秒以上も遅れてからとなり、ポ
ンプ制御系等の故障発生に対する対応性に問題が残され
ていた。When the pump drive control is performed by setting the constant failure determination time T'as described above, there is no problem when the pump applied voltage is low, but the failure determination is delayed as the pump applied voltage increases. There was a problem of getting higher. For example, the difference between the negative pressure filling completion time Pm when the pump applied voltage is maximum Vb and the negative pressure filling completion time Pn when the pump applied voltage is minimum Va in FIG. 4 is about 20 in the case of an ordinary electric vehicle. Second, in this case, the failure determination is made when the pump applied voltage is the maximum Vb after a delay of about 20 seconds or more after the negative pressure filling is completed. There was a problem with sex.
【０００８】本発明の目的は、電動式ポンプで負圧ブレ
ーキの負圧を上昇させるときのポンプ制御系等の故障発
生の判定を、ポンプ印加電圧の変動と対応した故障判定
時間により迅速に行うことにある。An object of the present invention is to quickly determine the occurrence of a failure in a pump control system or the like when increasing the negative pressure of a negative pressure brake with an electric pump, by using a failure determination time corresponding to a change in pump applied voltage. Especially.
【０００９】[0009]
【課題を解決するための手段】本発明は、電気自動車等
における負圧ブレーキを、電池電圧で駆動する電動式ポ
ンプで発生させた負圧で作動させ、負圧が所定の上限値
に達する負圧充填完了時間でポンプを停止させると共
に、負圧充填完了時間でポンプが停止しない場合に、ポ
ンプの駆動時間が予め設定された故障判定時間を超えた
時点でポンプの制御系等が故障したと判定するようにし
たポンプ制御において、ポンプの印加電圧を検出し、こ
の検出印加電圧に基づき故障判定時間を可変に設定した
ことにより、上記目的を達成するものである。According to the present invention, a negative pressure brake in an electric vehicle or the like is operated by a negative pressure generated by an electric pump driven by a battery voltage, and the negative pressure reaches a predetermined upper limit value. When the pump stops at the pressure filling completion time and does not stop at the negative pressure filling completion time, the pump control system etc. fails when the pump drive time exceeds the preset failure determination time. In the pump control that makes the determination, the voltage applied to the pump is detected, and the failure determination time is variably set based on the detected applied voltage, thereby achieving the above object.
【００１０】[0010]
【作用】負圧ブレーキを作動させる負圧を発生する電動
式ポンプを電池電圧による印加電圧で駆動させると、ポ
ンプ印加電圧変動で負圧充填完了時間が変動すると共
に、ポンプ印加電圧変動でこの印加電圧の検出信号で設
定される故障判定時間も変動するため、故障判定時間を
負圧充填完了時間に合わせて可変に設定することが可能
となって、負圧上昇時の故障判定時間をポンプ印加電圧
の大小に対応して常に最小にすることができるようにな
る。When the electric pump that generates the negative pressure for operating the negative pressure brake is driven by the applied voltage of the battery voltage, the negative pressure filling completion time changes due to the fluctuation of the pump applied voltage and this application due to the fluctuation of the pump applied voltage. Since the failure determination time set by the voltage detection signal also fluctuates, the failure determination time can be variably set according to the negative pressure filling completion time, and the failure determination time when the negative pressure rises is applied to the pump. It becomes possible to always minimize the voltage according to the magnitude of the voltage.
【００１１】[0011]
【実施例】以下、本発明方法を図１及び図２を参照して
説明する。尚、図１は電気自動車の負圧ブレーキ用ポン
プの駆動を制御する本発明方法の要点となるポンプ印加
電圧Ｖと負圧充填完了時のポンプ制御に必要な故障判定
時間Ｔとの関係が示され、図２は本発明方法を実行する
マイクロコンピュータの構成例が示される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the present invention will be described below with reference to FIGS. Note that FIG. 1 shows the relationship between the pump applied voltage V and the failure determination time T required for pump control at the completion of negative pressure charging, which is the main point of the method of the present invention for controlling the drive of the negative pressure brake pump of an electric vehicle. FIG. 2 shows an example of the configuration of a microcomputer that executes the method of the present invention.
【００１２】本発明者は、電動式ポンプで負圧ブレーキ
の負圧を上昇させるときのポンプ制御系等の故障発生の
判定遅れの問題点を解決するため、ポンプ印加電圧と負
圧充填完了時間の関係、及び、ポンプ印加電圧と故障判
定時間の関係を検討した結果、次のことを見い出した。In order to solve the problem of the delay in determining the occurrence of a failure in the pump control system or the like when the negative pressure of the negative pressure brake is raised by the electric pump, the present inventor solves the problem of the pump applied voltage and the negative pressure filling completion time. And the relationship between the pump applied voltage and the failure determination time were examined, and the following was found.
【００１３】即ち、電気自動車等の主電池あるいは補助
電池の電圧印加で駆動する負圧ブレーキ用ポンプにおい
ては、主電池の電圧変動でポンプ印加電圧が変動し、ポ
ンプ印加電圧の変動でポンプ駆動にて負圧を所定の上限
まで発生させるに要する負圧充填完了時間が反比例的に
変動する（図４参照）。また、負圧ブレーキの負圧検出
信号でポンプ駆動が開始して負圧が上限値に達した時点
を検出する際に、ポンプの駆動制御系等に何らかの故障
が発生してポンプ駆動が負圧充填完了時間経過後も続行
される不具合を回避するために設定される故障判定時間
は、ポンプ駆動時間が負圧充填完了時間を超えるか否か
の判定基準時間であることから、負圧充填完了時間と比
例的であり、ポンプ印加電圧と反比例的な関係として設
定することが可能となる。That is, in a negative pressure brake pump that is driven by applying a voltage to a main battery or an auxiliary battery of an electric vehicle or the like, the pump applied voltage fluctuates due to the voltage fluctuation of the main battery, and the pump driving is due to the fluctuation of the pump applied voltage. The negative pressure filling completion time required to generate the negative pressure up to a predetermined upper limit varies inversely (see FIG. 4). When the negative pressure detection signal of the negative pressure brake is used to detect when the negative pressure reaches the upper limit value when the pump drive starts, some failure occurs in the pump drive control system, etc. The failure determination time set to avoid the problem of continuing even after the filling completion time elapses is the reference time for determining whether the pump drive time exceeds the negative pressure filling completion time. It is proportional to the time and can be set as an inversely proportional relationship with the pump applied voltage.
【００１４】そこで、ポンプ印加電圧から反比例的な関
係で故障判定時間を求めると、変動するポンプ印加電圧
と故障判定時間の関係は、図１のグラフＧ2 のようにな
り、ポンプ印加電圧が高いほど故障判定時間が短くな
る。具体的には、一般の電気自動車においてポンプ印加
電圧が最大Ｖｂのときの故障判定時間Ｔｍと、ポンプ印
加電圧が最小Ｖａのときの故障判定時間Ｔｎの差が約２
０秒である。Therefore, when the failure determination time is obtained from the pump applied voltage in an inversely proportional relationship, the changing relationship between the pump applied voltage and the failure determination time is as shown by the graph G2 in FIG. Failure determination time becomes shorter. Specifically, in a general electric vehicle, the difference between the failure determination time Tm when the pump applied voltage is maximum Vb and the failure determination time Tn when the pump applied voltage is minimum Va is about 2
0 seconds.
【００１５】図１のポンプ印加電圧と故障判定時間の関
係データを、図１のコントロールユニット１のＲＯＭ６
に記憶させ、入力インターフェース２に負圧検出信号と
共にポンプ印加電圧検出信号を入力させて、本発明方法
は次のようにポンプ制御を行う。The relational data between the pump applied voltage and the failure determination time shown in FIG. 1 is stored in the ROM 6 of the control unit 1 shown in FIG.
And the pump applied voltage detection signal is input to the input interface 2 together with the negative pressure detection signal, and the method of the present invention performs pump control as follows.
【００１６】コントロールユニット１の入力インターフ
ェース２にセンサ出力である負圧検出信号が入力される
と、これをＣＰＵ３が演算処理し、負圧が下限値に達し
たと判断すると出力インターフェース４を介してポンプ
駆動信号を出力してポンプが駆動開始し、負圧が上限値
に達したと判断するとポンプ停止信号が出力されてポン
プが停止する。When a negative pressure detection signal, which is a sensor output, is input to the input interface 2 of the control unit 1, the CPU 3 performs arithmetic processing on this signal, and when it determines that the negative pressure has reached the lower limit value, it is output via the output interface 4. When the pump is started by driving the pump drive signal and the negative pressure reaches the upper limit value, the pump stop signal is output and the pump is stopped.
【００１７】ここで、センサ等で構成されるポンプの駆
動制御系等に何らかの故障が発生して、負圧検出信号が
無くなるような故障発生の場合、ポンプ印加電圧検出信
号がＣＰＵ３で読み取られて、このときのポンプ印加電
圧に基づく故障判定時間がＲＯＭ６から読み取られる。
図１に示すように、故障発生時のポンプ印加電圧をＶ
ｘ、この印加電圧Ｖｘから求められた故障判定時間をＴ
ｘとすると、ポンプが故障判定時間Ｔｘだけ駆動したと
ころで、ＣＰＵ３が故障判定をしてポンプの駆動停止の
制御を行う。If a failure occurs in the drive control system of the pump, which is composed of sensors and the like, and the negative pressure detection signal disappears, the pump applied voltage detection signal is read by the CPU 3. The failure determination time based on the pump applied voltage at this time is read from the ROM 6.
As shown in FIG. 1, the pump applied voltage at the time of failure is V
x, the failure determination time obtained from this applied voltage Vx is T
When x is set, the CPU 3 makes a failure determination when the pump is driven for the failure determination time Tx, and controls the drive stop of the pump.
【００１８】以上のポンプ制御において、ポンプ印加電
圧Ｖｘの変動に対応させて故障判定時間Ｔｘを、負圧充
填完了時間に合致させて反比例的に変動するように設定
しておくと、任意のポンプ印加電圧Ｖｘのときの故障判
定時間Ｔｘが、ポンプ印加電圧Ｖｘのときの負圧充填完
了時間とほぼ同等となって、故障判定が負圧充填完了直
後に時間的遅れなく行われる。かかる負圧充填完了直後
の故障判定は、ポンプ印加電圧最小Ｖａから最大Ｖｂの
全範囲で行われ、故障判定の時間遅れ防止効果はポンプ
印加電圧が高いほど顕著であり、例えばポンプ印加電圧
最大Ｖｂのときの故障判定に従来約２０秒の時間遅れが
あったのが、本発明においてはほぼ０秒まで大幅に短縮
される。In the above pump control, if the failure determination time Tx is set so as to correspond to the fluctuation of the pump applied voltage Vx and to change in inverse proportion to the negative pressure filling completion time, an arbitrary pump is set. The failure determination time Tx when the applied voltage Vx is substantially equal to the negative pressure filling completion time when the pump applied voltage Vx is set, and the failure determination is performed immediately after the negative pressure filling is completed without a time delay. The failure determination immediately after the completion of the negative pressure filling is performed in the entire range of the pump applied voltage minimum Va to the maximum Vb, and the time delay prevention effect of the failure determination is more remarkable as the pump applied voltage is higher, for example, the pump applied voltage maximum Vb. Conventionally, there was a delay of about 20 seconds in the failure determination at that time, but in the present invention, it is greatly reduced to almost 0 seconds.
【００１９】[0019]
【発明の効果】本発明によれば、電気自動車等の負圧ブ
レーキを作動させる負圧を発生する電動式ポンプの印加
電圧が変動して負圧充填完了時間が変動しても、負圧充
填完了時のポンプ制御に必要な故障判定時間をポンプ印
加電圧に基づき設定したから、故障判定時間を負圧充填
完了時間に合わせて可変に設定することが可能となり、
負圧上昇時の故障判定時間をポンプ印加電圧に対応させ
て常に最小にして、故障判定の時間遅れをほぼ皆無にす
ることができるようになり、ポンプ制御系等の故障発生
に常に迅速に対処できるポンプ制御系、制御方法が提供
できる。According to the present invention, even if the negative pressure filling completion time fluctuates due to a change in the applied voltage of an electric pump that generates a negative pressure for operating a negative pressure brake of an electric vehicle or the like, negative pressure filling is performed. Since the failure judgment time required for pump control at the time of completion was set based on the pump applied voltage, it is possible to set the failure judgment time variably according to the negative pressure filling completion time.
The failure determination time when the negative pressure rises can be minimized at all times by making it correspond to the pump applied voltage, and the time delay of failure determination can be eliminated almost completely. It is possible to provide a pump control system and a control method that can be performed.
【図１】本発明方法を説明するためのポンプ印加電圧と
故障判定時間の関係を示すグラフ図。FIG. 1 is a graph showing a relationship between a pump applied voltage and a failure determination time for explaining the method of the present invention.
【図２】本発明方法を説明するためのコントロールユニ
ットのブロック図。FIG. 2 is a block diagram of a control unit for explaining the method of the present invention.
【図３】従来の負圧ブレーキ用ポンプ制御方法を説明す
るためのコントロールユニットのブロック図。FIG. 3 is a block diagram of a control unit for explaining a conventional negative pressure brake pump control method.
【図４】従来の負圧ブレーキ用ポンプ制御方法を説明す
るためのポンプ印加電圧と負圧充填完了時間の関係を示
すグラフ図。FIG. 4 is a graph showing a relationship between a pump applied voltage and a negative pressure filling completion time for explaining a conventional negative pressure brake pump control method.
Ｖ ポンプ印加電圧 Ｔ 故障判定時間 V Pump applied voltage T Failure judgment time
Claims (1)
電池電圧で駆動する電動式ポンプで発生させた負圧で作
動させ、負圧が所定の上限値に達する負圧充填完了時間
でポンプを停止させると共に、負圧充填完了時間でポン
プが停止しない場合に、ポンプの駆動時間が予め設定さ
れた故障判定時間を超えた時点でポンプの制御系が故障
したと判定するようにしたポンプ制御方法であって、 前記ポンプの印加電圧を検出し、この検出印加電圧に基
づき前記故障判定時間を可変に設定したことを特徴とす
る負圧ブレーキ用ポンプ制御方法。1. A negative pressure brake for an electric vehicle,
When operating with the negative pressure generated by the electric pump driven by the battery voltage, stopping the pump at the negative pressure filling completion time when the negative pressure reaches the predetermined upper limit value, and not stopping at the negative pressure filling completion time In the pump control method, it is determined that the control system of the pump has failed when the drive time of the pump exceeds a preset failure determination time, and the applied voltage of the pump is detected. A method for controlling a pump for a negative pressure brake, wherein the failure determination time is variably set based on an applied voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10634995A JP3330256B2 (en) | 1995-04-28 | 1995-04-28 | Pump control method for negative pressure brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10634995A JP3330256B2 (en) | 1995-04-28 | 1995-04-28 | Pump control method for negative pressure brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08295229A true JPH08295229A (en) | 1996-11-12 |
| JP3330256B2 JP3330256B2 (en) | 2002-09-30 |
Family
ID=14431326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10634995A Expired - Fee Related JP3330256B2 (en) | 1995-04-28 | 1995-04-28 | Pump control method for negative pressure brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3330256B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010202183A (en) * | 2009-03-02 | 2010-09-16 | Dr Ing Hcf Porsche Ag | Method of inspecting function of brake system with brake booster, control device, and computer program |
| JP2014034341A (en) * | 2012-08-10 | 2014-02-24 | Nissin Kogyo Co Ltd | Negative pressure pump control device |
-
1995
- 1995-04-28 JP JP10634995A patent/JP3330256B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010202183A (en) * | 2009-03-02 | 2010-09-16 | Dr Ing Hcf Porsche Ag | Method of inspecting function of brake system with brake booster, control device, and computer program |
| US8326507B2 (en) | 2009-03-02 | 2012-12-04 | Dr. Ing. H.C.F. Porsche Aktiengesellschaft | Method for checking the function of a brake system with a brake booster |
| JP2014034341A (en) * | 2012-08-10 | 2014-02-24 | Nissin Kogyo Co Ltd | Negative pressure pump control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3330256B2 (en) | 2002-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH1134860A (en) | Abnormality detector and safety device for hydraulic brake booster | |
| JP2001055135A (en) | Brake booster system, driving method of brake booster system, and circuit thereof | |
| KR920006168A (en) | Vehicle control system | |
| RU2356763C2 (en) | Method of brake torque changing control of retarder | |
| JPH08295229A (en) | Controlling method for pump for use in negative-pressure brake | |
| JP3332651B2 (en) | Pump control method for negative pressure brake | |
| JP3313756B2 (en) | Vehicle control device | |
| JPH1134859A (en) | Pump drive control device in hydraulic brake booster system | |
| JPH0585332A (en) | Anti-skid control device | |
| JPH02310165A (en) | Anti-skid control device | |
| JP3248742B2 (en) | Air source device | |
| JPS61147791A (en) | Malfunction monitor of automatic positioner | |
| KR102295763B1 (en) | Method for determining abnormality of vacuum pump | |
| JP2606281B2 (en) | Control fluid pressure generator | |
| JP2000241304A (en) | Device for testing water pressure of tire | |
| JP3264097B2 (en) | Method of detecting braking failure of electric vehicle | |
| CN113335250B (en) | Vacuum pressure control method of vehicle vacuum booster based on height | |
| KR100589218B1 (en) | Engine control device of vehicle and method thereof | |
| JPH0930743A (en) | Starting compensating device for elevator | |
| JPH037672A (en) | Load driving circuit | |
| KR100721368B1 (en) | Apparatus and method of control for a vehicle anti-lock brake system | |
| KR100279453B1 (en) | Hydraulic control method of automatic transmission | |
| KR100534803B1 (en) | Line pressure control method of continuous variable transmission | |
| JP2001258168A (en) | Load controller | |
| JPH0396470A (en) | Accumulator device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20020708 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090719 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110719 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |