JPS6082439A - Residual fuel gauge for car - Google Patents
Residual fuel gauge for carInfo
- Publication number
- JPS6082439A JPS6082439A JP19096683A JP19096683A JPS6082439A JP S6082439 A JPS6082439 A JP S6082439A JP 19096683 A JP19096683 A JP 19096683A JP 19096683 A JP19096683 A JP 19096683A JP S6082439 A JPS6082439 A JP S6082439A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- level
- value
- circuit
- amount
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/06—Fuel tanks characterised by fuel reserve systems
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
Description
【発明の詳細な説明】
(イ)技術分野
本発明は車両が長時間アイドリング状態で傾斜して駐車
したときの燃料残量表示を正確にした車両用燃料残量計
に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field The present invention relates to a fuel level meter for a vehicle that accurately displays the remaining fuel level when the vehicle is idling for a long time and is parked on an incline.
(ロ)従来技術
従来、車両の燃料タンク内に残存する燃料の量を表示す
るのに折式の燃料計が用いられてきたが、最近は電子回
路を用いたデジタル式の燃料残量計が用いられる傾向に
ある。第1図はデジタル式燃料残量計のブロック線図で
、1は燃料タンク内の燃料の液面レベルの変化E’に気
信号の形で出力する燃料センサ、この燃料センサ1から
出力する残量信号をA/D変換器2によりデジタル値に
変換する。こうしてA/D変換された残量信号を時間平
均化回路3で一定の時間間隔をとって平均化し残景値分
演算する。この残量演算値はドライバ回路4企介して表
示器5に表示されるが、表示値はリフレッシュ回路6か
ら一定時間間隔で出力する更新信号により更新される。(b) Prior Art Traditionally, foldable fuel gauges have been used to display the amount of fuel remaining in a vehicle's fuel tank, but recently digital fuel gauges using electronic circuits have been used. It tends to be used. Figure 1 is a block diagram of a digital fuel level gauge. 1 is a fuel sensor that outputs a gas signal in response to a change in the fuel level in the fuel tank E'; The A/D converter 2 converts the quantity signal into a digital value. A time averaging circuit 3 averages the A/D-converted remaining amount signal at regular time intervals and calculates an after-view value. This remaining amount calculation value is displayed on the display 5 via the driver circuit 4, and the displayed value is updated by an update signal outputted from the refresh circuit 6 at regular time intervals.
この釉の燃料残量計では、車両が坂道や傾斜地を走行し
て車体が傾いたり急ブレーキをかけたときに燃料の液面
レベルが大幅に変動して実際の残量と異なる残量値を表
示してしまうことがあるので、それを防ぐために燃料残
量の一定開期ごとの検出値が前回の検出値から所定値以
上外れると@は補正して残量表示するようにした燃料計
が提案されている(たとえば特開昭56−53412号
)。この燃料計では表示の補正にはたとえばアイドリン
グ状態における燃料消費itのような予じめ設定した値
が用いられる。このようにすれば車体の傾斜や制動によ
る燃料の液面変動時にも残量が補正式れて表示されるの
で異常な表示は防げる。With this glazed fuel level gauge, when the vehicle is traveling on a slope or incline and the vehicle body is tilted or the vehicle body is suddenly braked, the fuel level changes significantly and the remaining level value differs from the actual remaining level. In order to prevent this, the fuel gauge is designed to correct the @ and display the remaining amount when the detected value of the remaining fuel amount at each fixed opening period deviates from the previous detected value by more than a predetermined value. It has been proposed (for example, Japanese Patent Laid-Open No. 56-53412). In this fuel gauge, a preset value, such as fuel consumption it in an idling state, is used to correct the display. In this way, even when the fuel level fluctuates due to tilting of the vehicle body or braking, the remaining amount is corrected and displayed, thereby preventing abnormal displays.
ところが、車両が片側の車輪を舗道にのせてアイドリン
グ状態で駐車するような場合、上記燃料計では一定周期
ごとに検出される燃料残量値はその都度予じめ設定した
値で補正式れるので、アイドリング状態が長く続くと実
際の燃料滴*mと補正に用いる設定値との差が累積して
燃料残量表示値が実際の残量と異なってきて残量表示が
正確でなくなるという問題がある。However, when the vehicle is parked in an idling state with one wheel resting on the pavement, the fuel level value detected at regular intervals with the above fuel gauge is corrected by a preset value each time. If the idling state continues for a long time, the difference between the actual fuel droplets*m and the setting value used for correction will accumulate, and the remaining fuel amount display value will differ from the actual remaining amount, causing the remaining amount display to become inaccurate. be.
(ハ)発明の目的および構成
本発明は上記の点にかんがみてなされたもので、最近エ
ンジンへの燃料供給量をm子的に最適に制御するのに電
子燃料噴射装置が用いられており、この装置では燃料噴
射パルスごとに一定量の燃料がエンジンに供給源れ消費
される点に看目し、車両が長時間アイドリング状態で傾
斜して駐車している間正確な残量表示ができるようにす
ること2目的とし、そのために車速か零で且つ燃料残量
検出値が前回の燃料残量検出値と所定値以上異なるとき
は前回の燃料残量検出値から電子燃料噴射装置の燃料噴
射パルスに基づいて演算した燃料消費量を減算した値を
燃料残量値として表示するように構成したものである。(c) Object and Structure of the Invention The present invention has been made in view of the above points, and recently electronic fuel injection devices have been used to optimally control the amount of fuel supplied to the engine. This device monitors the point at which a fixed amount of fuel is supplied to the engine and consumed with each fuel injection pulse, and allows for an accurate display of the remaining amount of fuel while the vehicle is idling or parked on an incline for long periods of time. For this purpose, when the vehicle speed is zero and the detected value of the remaining fuel amount differs from the previous detected value of the remaining fuel amount by more than a predetermined value, the fuel injection pulse of the electronic fuel injection device is changed from the previous detected value of the remaining fuel amount. The system is configured to display a value obtained by subtracting the fuel consumption amount calculated based on the amount of fuel as the remaining fuel amount value.
に)実施例 以下図面に基づいて本発明を説明する。) Example The present invention will be explained below based on the drawings.
第2図は本発明による燃料残量計の一実施例のブロック
線図であり、第1図と同じ構成部分は同じ参照数字で示
しである。この実施例は第1図に示した従来例に、時間
平均化回路3からの残量演算値を直接ドライバ回路4に
送るか残量判定回路11に送るかを切り換えるスイッチ
ング回路7と、スイッチング回路7の切換えを制御する
重速センザ8および車速判定回路9と、表示器5で表示
している燃料残量値を記憶する残量値記憶回路10と、
この残量値記憶回路10に記憶はれた前回の燃料残量値
と現在の残量演算値と2比較してその差の値に応じた指
令を出力する残量判定回路11と、電子燃料噴射装置1
2から出力される燃料噴射パルスPを計数するパルス信
号w1測回路13と、残量判定回路11から送られる前
回の燃料残量値とパルス信号計測回路13から出力され
るカウント値に基づいて演算される燃料消費itとから
燃料残量を演算する残量演算回路14とをさらに設けた
ものである。FIG. 2 is a block diagram of one embodiment of a fuel level gauge according to the present invention, in which the same components as in FIG. 1 are designated by the same reference numerals. This embodiment adds a switching circuit 7 to the conventional example shown in FIG. 7, a heavy speed sensor 8 and a vehicle speed determination circuit 9, a remaining fuel amount storage circuit 10 that stores the remaining fuel amount displayed on the display 5,
A remaining amount determination circuit 11 that compares the previous fuel remaining amount stored in the remaining amount value storage circuit 10 with the current remaining amount calculation value and outputs a command according to the difference value, and an electronic fuel Injection device 1
2, the previous fuel remaining amount value sent from the remaining amount determination circuit 11, and the count value output from the pulse signal measuring circuit 13. The system further includes a remaining amount calculation circuit 14 that calculates the remaining amount of fuel from the fuel consumption it.
次に上記燃料残量計による残量表示動作全第2図および
第3図のフローチャートに基づいて説明する。Next, the operation of displaying the remaining amount by the fuel remaining amount meter will be explained based on the flowcharts of FIGS. 2 and 3.
イグニッションスイッチ2オンすると、燃料センサ1か
ら出力する残量信号がA/D変換器2によりA/D変換
され(P−1)、この状態でプログラムによる割込み待
ち状態になる(P−2)。When the ignition switch 2 is turned on, the remaining amount signal output from the fuel sensor 1 is A/D converted by the A/D converter 2 (P-1), and in this state, the system enters a program interrupt wait state (P-2).
割込み指令があると、残量演算が次のように行なわれる
(P−3)。すなわち、A/D変換器2でデジタル信号
に変換爆れた残量信号は時間平均化回路3により平均化
され、残量値としてリフレッシュ回路6による一定時間
ごとに更新きれてスイッチング回路7に送られる。When there is an interrupt command, the remaining amount is calculated as follows (P-3). That is, the remaining amount signal converted into a digital signal by the A/D converter 2 is averaged by the time averaging circuit 3, and the remaining amount signal is updated at regular intervals by the refresh circuit 6 and sent to the switching circuit 7. It will be done.
さて、車速センザ8からの車速信号に基づ−て車速判定
回路9により車速か零が否が判定され(P−4)、jg
速が零でない′ときすなわち走行中であると@にスイッ
チング回路7Fi時間平均化回路3から出力される演算
残量値がドライバ回路4に直接送られ表示器5に表示さ
れる。Now, based on the vehicle speed signal from the vehicle speed sensor 8, the vehicle speed determination circuit 9 determines whether the vehicle speed is zero or not (P-4).
When the speed is not zero, that is, when the vehicle is running, the calculated remaining amount value output from the switching circuit 7Fi and the time averaging circuit 3 is directly sent to the driver circuit 4 and displayed on the display 5.
これに対して単速か零である場合はスイッチング回路7
は演算残量値LBを残量判定回路11に送り、ここで残
量位記1.は回路】0に記悔芒れている01回の燃料残
ht値LAと比較する(P−6)。On the other hand, if the speed is single speed or zero, the switching circuit 7
sends the calculated remaining amount value LB to the remaining amount determination circuit 11, where the remaining amount digit 1. is compared with the remaining fuel ht value LA of the 01st time recorded in circuit]0 (P-6).
その結果、両残−1.−1値LIA + LBの差の絶
対値が予め定めた設定値Lc (たとえば1t〜2t)
より大きいカウント値に対応した燃料消費itを減算し
、その差をドライバ回路4に送り、表示器5で表示する
(P−8)。こうして表示される残量表示値は車体が傾
斜する前の残量値から時間の紅過とともにアイドリング
中に消背された燃料が減算さ21た値であるので、正確
な残量値である。As a result, both balances are -1. The absolute value of the difference between -1 value LIA + LB is a predetermined set value Lc (for example, 1t to 2t)
The fuel consumption it corresponding to the larger count value is subtracted, and the difference is sent to the driver circuit 4 and displayed on the display 5 (P-8). The remaining amount display value displayed in this manner is a value obtained by subtracting the amount of fuel consumed during idling over time from the remaining amount value before the vehicle body was tilted, so it is an accurate remaining amount value.
その後車両が走行を始め車速か零でない状態になると(
P−4)スイッチング回路8が切り換えられ時間平均化
回路3により演算された残量値が直接ドライバ回路4に
送られ通常の残量表示ン行なう。After that, when the vehicle starts running and the vehicle speed becomes non-zero (
P-4) The switching circuit 8 is switched and the remaining amount value calculated by the time averaging circuit 3 is directly sent to the driver circuit 4 for normal remaining amount display.
上記実施例では残量表示の切り換え2回路構成で実現し
たが、マイクロコンピュータを用いてプログラム処理で
行なうことももちろん可能である。In the above embodiment, switching of the remaining amount display was realized by a two-circuit configuration, but it is of course possible to perform program processing using a microcomputer.
(ホ)発明の詳細
な説明したように、本発明は、燃料センサにより一定時
間間固で検出した燃料残量値を更新表示する燃料残量用
において、単速か零で且つ燃料残量の検出値が前回の燃
料残量検出値と所定値以上光なるときは、前回の燃料残
量検出値からm子燃料噴射装置の燃料噴射パルスに基づ
いて演算した燃料消費量を減算して表示するようにした
ので、たとえば車両の片側を舗道に乗り上げてアイドリ
ング状態で駐軍したり、傾斜地に長時間アイドリング駐
卓させる湯飲もその間の実際の燃料消費量を考Iなした
正確な燃料残量値が表示できる。(E) Detailed Description of the Invention As described in detail, the present invention provides a system for displaying updated fuel remaining amount detected by a fuel sensor for a fixed period of time, in single speed or zero speed, When the detected value is greater than the previous fuel remaining amount detection value by a predetermined value, the fuel consumption calculated based on the fuel injection pulse of the m-child fuel injection device is subtracted from the previous fuel remaining amount detection value and displayed. For example, when a vehicle is parked in an idling state with one side of the vehicle resting on the pavement, or when the vehicle is parked idling on a slope for a long period of time, the accurate fuel level value that takes into account the actual fuel consumption during that time can be calculated. Can be displayed.
第1図に従来の燃料残量計のブロック鳥i図、第2図は
本発明による燃料残量計の一実施例のブロック線図、第
3図は本発明による燃料残量計の表示動作の70−チャ
ートである。
1・・・燃料センサ、2・・・A/D変侠器、3・・・
時間平均化回路、4・・・ドライバ回路、5・・・表示
器、6・・・リフレッシュ回路、7・・・スイッチング
回路、8・・・′fFL速センサ、9・・・走行判定回
路、10・・・残奇値記惚回路、】1・・・残九判定回
路、12・・・■子燃料喧射装置、13・・・パルス山
号計測回路、14・・・残量演算回路FIG. 1 is a block diagram of a conventional fuel level meter, FIG. 2 is a block diagram of an embodiment of the fuel level meter according to the present invention, and FIG. 3 is a display operation of the fuel level meter according to the present invention. This is the 70-chart. 1...Fuel sensor, 2...A/D converter, 3...
Time averaging circuit, 4... Driver circuit, 5... Display device, 6... Refresh circuit, 7... Switching circuit, 8...'fFL speed sensor, 9... Driving judgment circuit, DESCRIPTION OF SYMBOLS 10... Residual odd value captivation circuit, ]1... Remaining nine determination circuit, 12... ■Sub fuel ejection device, 13... Pulse peak number measuring circuit, 14... Remaining amount calculation circuit
Claims (1)
更新表示する燃料残量計において、車速が零で且つ燃料
残量検出値が前回の燃料残量検出値と所定値以上外なっ
たときは前回の燃料残量検出値から電子燃料噴射装置の
燃料噴射パルスに基づいて演算した燃料消費す、を減算
した値を燃料残量値として表示する表示fljJ御手段
全手段たこと2特徴とする車両用燃料残量計。In a fuel gauge that updates and displays the remaining fuel level detected by a fuel sensor at fixed time intervals, when the vehicle speed is zero and the detected remaining fuel level differs from the previous detected fuel level by more than a predetermined value, A vehicle characterized in that: 2. Display fljJ control means for displaying a value obtained by subtracting the fuel consumption calculated based on the fuel injection pulse of the electronic fuel injection device from the previous fuel remaining amount detection value as the remaining fuel amount value. fuel level gauge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19096683A JPS6082439A (en) | 1983-10-14 | 1983-10-14 | Residual fuel gauge for car |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19096683A JPS6082439A (en) | 1983-10-14 | 1983-10-14 | Residual fuel gauge for car |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6082439A true JPS6082439A (en) | 1985-05-10 |
JPH0336694B2 JPH0336694B2 (en) | 1991-06-03 |
Family
ID=16266635
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19096683A Granted JPS6082439A (en) | 1983-10-14 | 1983-10-14 | Residual fuel gauge for car |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6082439A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013113249A (en) * | 2011-11-30 | 2013-06-10 | Daihatsu Motor Co Ltd | Residual fuel determining apparatus |
KR101337909B1 (en) * | 2012-02-10 | 2013-12-09 | 기아자동차주식회사 | Device and method for fuel run out diagnosis of hybrid vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59220417A (en) * | 1983-05-27 | 1984-12-11 | Toyota Motor Corp | Remained fuel amount detecting apparatus |
-
1983
- 1983-10-14 JP JP19096683A patent/JPS6082439A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59220417A (en) * | 1983-05-27 | 1984-12-11 | Toyota Motor Corp | Remained fuel amount detecting apparatus |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013113249A (en) * | 2011-11-30 | 2013-06-10 | Daihatsu Motor Co Ltd | Residual fuel determining apparatus |
KR101337909B1 (en) * | 2012-02-10 | 2013-12-09 | 기아자동차주식회사 | Device and method for fuel run out diagnosis of hybrid vehicle |
Also Published As
Publication number | Publication date |
---|---|
JPH0336694B2 (en) | 1991-06-03 |
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