JP2020063701A - Fuel supply control device - Google Patents
Fuel supply control device Download PDFInfo
- Publication number
- JP2020063701A JP2020063701A JP2018196142A JP2018196142A JP2020063701A JP 2020063701 A JP2020063701 A JP 2020063701A JP 2018196142 A JP2018196142 A JP 2018196142A JP 2018196142 A JP2018196142 A JP 2018196142A JP 2020063701 A JP2020063701 A JP 2020063701A
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- pressure
- passage
- control device
- supply control
- 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
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
本発明は、燃料供給制御装置に関する。 The present invention relates to a fuel supply control device.
従来、内燃機関の燃料供給装置として、燃料ポンプ（フィードポンプ）により燃料タンクから汲み上げられる燃料を燃料通路を介してデリバリパイプに供給し、燃料噴射弁によりデリバリパイプ内に貯留された燃料を内燃機関の吸気通路に噴射するものがある（例えば、特許文献１）。 2. Description of the Related Art Conventionally, as a fuel supply device for an internal combustion engine, fuel pumped up from a fuel tank by a fuel pump (feed pump) is supplied to a delivery pipe through a fuel passage, and fuel stored in the delivery pipe by a fuel injection valve is supplied to the internal combustion engine. There is one that injects into the intake passage (for example, Patent Document 1).
ところで、燃料供給装置では、燃料通路に異物が詰まることがある。しかし、上記特許文献１には、こうした異常を検出する構成については開示されておらず、燃料通路の異常を検出する技術の開発が求められていた。 By the way, in the fuel supply device, foreign matter may be clogged in the fuel passage. However, the above-mentioned Patent Document 1 does not disclose a configuration for detecting such an abnormality, and development of a technique for detecting an abnormality in the fuel passage has been required.
上記課題を解決する燃料供給制御装置は、燃料タンク内の燃料を汲み上げる燃料ポンプと、前記燃料ポンプから供給される燃料が流通する燃料通路と、前記燃料通路から供給される燃料を貯留するデリバリパイプと、前記デリバリパイプ内に貯留される燃料を噴射する燃料噴射弁と、前記デリバリパイプ内の燃圧を検出する燃圧センサとを備えた内燃機関の燃料供給装置を制御対象とし、前記燃圧及び機関回転数に基づいて、前記燃圧が極大値となる機関回転数である共鳴回転数を検出し、該共鳴回転数が予め設定された所定回転数範囲外である場合に、前記燃料通路に異常が発生したと判定する。 A fuel supply control device that solves the above problems is a fuel pump that pumps up fuel in a fuel tank, a fuel passage through which fuel supplied from the fuel pump flows, and a delivery pipe that stores fuel supplied from the fuel passage. A fuel injection device for injecting fuel stored in the delivery pipe, and a fuel pressure sensor for detecting a fuel pressure in the delivery pipe, the fuel supply device for an internal combustion engine being controlled, and the fuel pressure and the engine rotation Based on the number, the resonance speed, which is the engine speed at which the fuel pressure has a maximum value, is detected, and when the resonance speed is outside a preset predetermined speed range, an abnormality occurs in the fuel passage. It is judged that it did.
デリバリパイプ内の燃料圧力（燃圧）は、例えば燃料噴射弁から燃料を噴射することによって脈動する。こうした燃圧の脈動は、燃料通路内を伝搬し、その端部等で反射することでデリバリパイプ内を往復する。そのため、燃料噴射のタイミング、すなわち単位時間あたりの燃料噴射回数によっては共鳴現象が生じることで、燃圧が大きくなる。共鳴現象が起きる単位時間あたりの燃料噴射回数は、デリバリパイプや燃料通路の長さ等によって決まるため、燃料通路に異常がなければ、燃料供給装置の仕様等に応じて決まった回数となる。そして、内燃機関に燃料供給を行う際における単位時間あたりの燃料噴射回数は、機関回転数に応じて決まるため、共鳴現象により燃圧が極大値（ピーク）となる機関回転数は、燃料供給装置の仕様に応じた所定回転数範囲の値となる。 The fuel pressure (fuel pressure) in the delivery pipe pulsates by injecting fuel from a fuel injection valve, for example. The pulsation of the fuel pressure propagates in the fuel passage and is reflected at the end of the fuel passage to reciprocate in the delivery pipe. Therefore, a resonance phenomenon occurs depending on the timing of fuel injection, that is, the number of fuel injections per unit time, and the fuel pressure increases. Since the number of fuel injections per unit time in which the resonance phenomenon occurs is determined by the length of the delivery pipe and the fuel passage, etc., if there is no abnormality in the fuel passage, the number of fuel injections is determined according to the specifications of the fuel supply device. Since the number of fuel injections per unit time when supplying fuel to the internal combustion engine is determined according to the engine speed, the engine speed at which the fuel pressure reaches a maximum value (peak) due to the resonance phenomenon is It is a value within a predetermined rotation speed range according to the specifications.
一方、例えば燃料通路に異物の詰まりが生じ始めると、燃料通路の同位置で脈動する燃料の一部が反射ことで、異なる燃料噴射回数でも共鳴現象が生じるようになる。したがって、上記構成のように燃圧が極大値となる共鳴回転数を検出し、該共鳴回転数が予め設定された所定回転数範囲外であれば、燃料通路に異常が生じたと判定できる。 On the other hand, for example, when a foreign substance is clogged in the fuel passage, a part of the fuel pulsating at the same position in the fuel passage is reflected, so that a resonance phenomenon occurs even at different fuel injection times. Therefore, it is possible to determine that an abnormality has occurred in the fuel passage by detecting the resonance rotational speed at which the fuel pressure has a maximum value as in the above configuration and if the resonance rotational speed is outside the preset predetermined rotational speed range.
以下、燃料供給制御装置の一実施形態を図面に従って説明する。
図１に示すように、燃料供給制御装置１の制御対象となる内燃機関の燃料供給装置２は、燃料が貯留されている燃料タンク１１と、内燃機関の気筒内に燃料を直接噴射する複数の直噴用燃料噴射弁１２と、内燃機関の吸気通路に燃料を噴射する燃料噴射弁としての複数のポート用燃料噴射弁１３とを備えている。また、燃料供給装置２には、燃料タンク１１内の燃料を汲み上げる燃料ポンプとしての電動の低圧燃料ポンプ（フィードポンプ）１４と、低圧燃料ポンプ１４から供給された燃料が流通する燃料通路としての低圧通路１５とが設けられている。
An embodiment of the fuel supply control device will be described below with reference to the drawings.
As shown in FIG. 1, a fuel supply device 2 for an internal combustion engine, which is a control target of the fuel supply control device 1, includes a fuel tank 11 in which fuel is stored and a plurality of fuel injection devices that directly inject the fuel into the cylinders of the internal combustion engine. A direct injection fuel injection valve 12 and a plurality of port fuel injection valves 13 as fuel injection valves for injecting fuel into an intake passage of an internal combustion engine are provided. Further, the fuel supply device 2 includes an electric low-pressure fuel pump (feed pump) 14 as a fuel pump for pumping the fuel in the fuel tank 11, and a low-pressure fuel passage as a fuel passage through which the fuel supplied from the low-pressure fuel pump 14 flows. A passage 15 is provided.
低圧通路１５は、下流側で２つに分岐しており、一方の第１分岐通路２１は高圧燃料ポンプ１６に接続され、他方の第２分岐通路２２はデリバリパイプとしてのポート用デリバリパイプ２３に接続されている。高圧燃料ポンプ１６は、第１分岐通路２１から供給された燃料を加圧し、直噴用デリバリパイプ２４に供給する。直噴用デリバリパイプ２４に貯留されている燃料は、各直噴用燃料噴射弁１２から噴射される。ポート用デリバリパイプ２３に貯留されている燃料は、各ポート用燃料噴射弁１３から噴射される。 The low-pressure passage 15 is branched into two on the downstream side, one first branch passage 21 is connected to the high-pressure fuel pump 16, and the other second branch passage 22 is a delivery pipe 23 for a port as a delivery pipe. It is connected. The high-pressure fuel pump 16 pressurizes the fuel supplied from the first branch passage 21 and supplies it to the direct injection delivery pipe 24. The fuel stored in the direct injection delivery pipe 24 is injected from each direct injection fuel injection valve 12. The fuel stored in the port delivery pipe 23 is injected from each port fuel injection valve 13.
高圧燃料ポンプ１６は、低圧通路１５に接続されている吸入通路３１と、直噴用デリバリパイプ２４に接続されている吐出通路３２と、吸入通路３１及び吐出通路３２と連通する加圧室３３を有する加圧部３４とを備えている。吐出通路３２内には、加圧室３３側から直噴用デリバリパイプ２４側への燃料の流通は許容する一方で、直噴用デリバリパイプ２４側から加圧室３３側への燃料の流通は規制する吐出逆止弁３５が設けられている。また、高圧燃料ポンプ１６には、開弁時には吸入通路３１を通じた低圧通路１５と加圧室３３との間での燃料の流通を許容する一方、閉弁時には吸入通路３１を通じた低圧通路１５と加圧室３３との間での燃料の流通を規制する電動の吸入弁３６が設けられている。なお、吸入弁３６の開閉動作は、燃料供給制御装置１によって制御される。 The high-pressure fuel pump 16 includes a suction passage 31 connected to the low-pressure passage 15, a discharge passage 32 connected to the direct injection delivery pipe 24, and a pressurizing chamber 33 communicating with the suction passage 31 and the discharge passage 32. And a pressurizing unit 34. In the discharge passage 32, fuel is allowed to flow from the pressure chamber 33 side to the direct injection delivery pipe 24 side, while fuel is allowed to flow from the direct injection delivery pipe 24 side to the pressure chamber 33 side. A discharge check valve 35 for regulating is provided. Further, the high-pressure fuel pump 16 allows the fuel to flow between the low-pressure passage 15 and the pressurizing chamber 33 through the suction passage 31 when the valve is opened, and the low-pressure passage 15 through the suction passage 31 when the valve is closed. An electric suction valve 36 that regulates the flow of fuel to and from the pressurizing chamber 33 is provided. The opening / closing operation of the intake valve 36 is controlled by the fuel supply control device 1.
加圧部３４は、加圧室３３に流入した燃料を加圧して吐出通路３２に吐出する。具体的には、加圧部３４は、シリンダ４１と、シリンダ４１内でその軸方向に沿って往復運動するプランジャ４２とを有しており、シリンダ４１とプランジャ４２とによって加圧室３３が区画されている。プランジャ４２は、内燃機関のカム軸４３と一体回転するカムピース４４の回転に連動して往復運動する。このようにプランジャ４２が往復運動することで、加圧室３３の容積が変わる。そして、加圧部３４は、プランジャ４２の往復運動と吸入弁３６の開閉動作とを連動させることにより、低圧通路１５側から加圧室３３内に燃料を吸入し、当該燃料を加圧して直噴用デリバリパイプ２４に供給する。 The pressurizing unit 34 pressurizes the fuel that has flowed into the pressurizing chamber 33 and discharges the fuel into the discharge passage 32. Specifically, the pressurizing unit 34 has a cylinder 41 and a plunger 42 that reciprocates in the cylinder 41 along the axial direction thereof, and the pressurizing chamber 33 is partitioned by the cylinder 41 and the plunger 42. Has been done. The plunger 42 reciprocates in conjunction with the rotation of the cam piece 44 that rotates integrally with the cam shaft 43 of the internal combustion engine. As the plunger 42 reciprocates in this manner, the volume of the pressurizing chamber 33 changes. Then, the pressurizing unit 34 interlocks the reciprocating motion of the plunger 42 with the opening / closing operation of the intake valve 36 to suck the fuel into the pressurizing chamber 33 from the low pressure passage 15 side and directly pressurize the fuel. Supply to the delivery pipe 24 for injection.
燃料供給制御装置１は、図示しない中央処理装置（ＣＰＵ）やメモリを備えており、所定の演算周期ごとにメモリに記憶されたプログラムをＣＰＵが実行する。燃料供給制御装置１には、各種センサが接続されており、これらのセンサから取得する状態量に基づいて各種の制御を実行する。各種センサの一として、燃料供給制御装置１には、クランク角センサ５１が電気的に接続されている。クランク角センサ５１は、クランク軸の回転角度（クランク角θ）を検出する。そして、燃料供給制御装置１は、検出されるクランク角θに同期して直噴用燃料噴射弁１２及びポート用燃料噴射弁１３から燃料噴射を行い、内燃機関に燃料を供給する。 The fuel supply control device 1 includes a central processing unit (CPU) and a memory (not shown), and the CPU executes a program stored in the memory at every predetermined calculation cycle. Various sensors are connected to the fuel supply control device 1, and various controls are executed based on the state quantities obtained from these sensors. As one of various sensors, a crank angle sensor 51 is electrically connected to the fuel supply control device 1. The crank angle sensor 51 detects the rotation angle (crank angle θ) of the crank shaft. Then, the fuel supply control device 1 performs fuel injection from the direct injection fuel injection valve 12 and the port fuel injection valve 13 in synchronization with the detected crank angle θ, and supplies fuel to the internal combustion engine.
次に、燃料供給制御装置１による低圧通路１５の異常検出について説明する。
燃料供給制御装置１は、クランク角θに基づいて機関回転数（機関回転速度）Ｎｅを演算する。また、燃料供給制御装置１には、ポート用デリバリパイプ２３内の燃圧（燃料圧力）Ｐｄを検出する燃圧センサ５２が接続されている。そして、燃料供給制御装置１は、機関回転数Ｎeと燃圧Ｐｄとの関係に基づいて低圧通路１５の異物の詰まりを検出する。
Next, the abnormality detection of the low pressure passage 15 by the fuel supply control device 1 will be described.
The fuel supply control device 1 calculates the engine speed (engine speed) Ne based on the crank angle θ. A fuel pressure sensor 52 that detects the fuel pressure (fuel pressure) Pd in the port delivery pipe 23 is connected to the fuel supply control device 1. Then, the fuel supply control device 1 detects clogging of foreign matter in the low pressure passage 15 based on the relationship between the engine speed Ne and the fuel pressure Pd.
ここで、ポート用デリバリパイプ２３内の燃圧は、例えばポート用燃料噴射弁１３から燃料を噴射することによって脈動する。こうした燃圧の脈動は、低圧通路１５内を伝搬し、高圧燃料ポンプ１６等で反射することでポート用デリバリパイプ２３内を往復する。そのため、ポート用燃料噴射弁１３からの燃料噴射のタイミング、すなわち単位時間あたりの燃料噴射回数によっては共鳴現象が生じることで、燃圧Ｐｄが大きくなる。こうした共鳴現象が起きる単位時間あたりの燃料噴射回数は、ポート用デリバリパイプ２３や低圧通路１５の長さ等によって決まるため、低圧通路１５に異物が詰まる等の異常がなければ、燃料供給装置２の仕様等に応じて決まった回数となる。そして、内燃機関に燃料供給を行う際における単位時間あたりの燃料噴射回数は、機関回転数Ｎeによって一義的に決まるため、図２に示すように、共鳴現象により燃圧Ｐｄが極大値（ピーク）となる機関回転数Ｎeは、燃料供給装置２の仕様に応じた所定回転数範囲Ｒｔｈの値となる。一方、例えば低圧通路１５に異物の詰まりが生じ始めると、低圧通路１５の同位置で脈動する燃料の一部が反射ことで、異なる燃料噴射回数でも共鳴現象が生じるようになる。 Here, the fuel pressure in the port delivery pipe 23 pulsates by injecting fuel from the port fuel injection valve 13, for example. Such fuel pressure pulsation propagates in the low-pressure passage 15 and is reflected by the high-pressure fuel pump 16 and the like to reciprocate in the port delivery pipe 23. Therefore, a resonance phenomenon occurs depending on the timing of fuel injection from the port fuel injection valve 13, that is, the number of fuel injections per unit time, and the fuel pressure Pd increases. The number of fuel injections per unit time in which such a resonance phenomenon occurs is determined by the length of the port delivery pipe 23, the low pressure passage 15, etc. Therefore, if there is no abnormality such as foreign matter clogging in the low pressure passage 15, the fuel supply device 2 The number of times is determined according to the specifications. Since the number of fuel injections per unit time when fuel is supplied to the internal combustion engine is uniquely determined by the engine speed Ne, as shown in FIG. 2, the fuel pressure Pd has a maximum value (peak) due to the resonance phenomenon. The engine rotation speed Ne becomes a value in a predetermined rotation speed range Rth according to the specifications of the fuel supply device 2. On the other hand, for example, when foreign matter is clogged in the low-pressure passage 15, a part of the fuel pulsating at the same position in the low-pressure passage 15 is reflected, so that a resonance phenomenon occurs even at different fuel injection times.
上記の点を踏まえ、本実施形態の燃料供給制御装置１には、燃料供給装置２の仕様に応じた所定回転数範囲Ｒｔｈが予め記憶されている。また、燃料供給制御装置１は、燃圧Ｐｄの機関回転数Ｎeに対する変化を検出し、燃圧Ｐｄが極大値（ピーク）となる機関回転数Ｎeである共鳴回転数Ｎｒを取得する。なお、共鳴回転数Ｎｒの取得方法としては、例えば燃圧Ｐｄの機関回転数Ｎeに対する変化量（微分値）を演算し、変化量の符号が反転して該変化量がゼロになる機関回転数Ｎeを共鳴回転数Ｎｒとする方法を採用できるが、他の方法も適宜採用可能である。そして、燃料供給制御装置１は、共鳴回転数Ｎｒが所定回転数範囲Ｒｔｈ内の値であれば異常が発生していないと判定し、共鳴回転数Ｎｒが所定回転数範囲Ｒｔｈ外の値であれば異常が発生したと判定する。 Based on the above points, the fuel supply control device 1 of the present embodiment stores in advance a predetermined rotational speed range Rth according to the specifications of the fuel supply device 2. Further, the fuel supply control device 1 detects a change in the fuel pressure Pd with respect to the engine rotation speed Ne, and acquires the resonance rotation speed Nr which is the engine rotation speed Ne at which the fuel pressure Pd has a maximum value (peak). As a method of obtaining the resonance speed Nr, for example, a change amount (differential value) of the fuel pressure Pd with respect to the engine speed Ne is calculated, and the sign of the change amount is inverted so that the change amount becomes zero. Can be adopted as the resonance rotational speed Nr, but other methods can also be adopted as appropriate. Then, the fuel supply control device 1 determines that no abnormality has occurred if the resonance rotation speed Nr is a value within the predetermined rotation speed range Rth, and the resonance rotation speed Nr is a value outside the predetermined rotation speed range Rth. For example, it is determined that an abnormality has occurred.
次に、一例として第１分岐通路２１に異物が詰まり始めた状態を想定する。
この場合、図３において実線で示すように、燃圧Ｐｄは２つの機関回転数Ｎeで極大値となるため、燃料供給制御装置１は、共鳴回転数Ｎｒ１，Ｎｒ２を取得する。このうち、共鳴回転数Ｎｒ１は所定回転数範囲Ｒｔｈ内の値であるため、燃料供給制御装置１は、共鳴回転数Ｎｒ１を取得した時点では、異常が発生したと判定しない。一方、共鳴回転数Ｎｒ２は所定回転数範囲Ｒｔｈ外の値であるため、燃料供給制御装置１は、共鳴回転数Ｎｒ２を取得した時点で、異常が発生したと判定する。
Next, as an example, assume that the first branch passage 21 is clogged with foreign matter.
In this case, as indicated by the solid line in FIG. 3, the fuel pressure Pd has the maximum value at the two engine speeds Ne, so the fuel supply control device 1 acquires the resonance speeds Nr1 and Nr2. Of these, the resonance rotation speed Nr1 is a value within the predetermined rotation speed range Rth, so the fuel supply control device 1 does not determine that an abnormality has occurred at the time when the resonance rotation speed Nr1 is acquired. On the other hand, since the resonance rotation speed Nr2 is a value outside the predetermined rotation speed range Rth, the fuel supply control device 1 determines that an abnormality has occurred at the time when the resonance rotation speed Nr2 is acquired.
なお、共鳴回転数Ｎｒ２での燃圧Ｐｄは、第１分岐通路２１に異物が詰まることで、該第１分岐通路２１の内径が小さくなり、同位置が絞り部（オリフィス）として機能するようになるため、圧力降下が生じる。その結果、共鳴回転数Ｎｒ１付近での燃圧Ｐｄは、図３において破線で示す正常時の燃圧Ｐｄと比較して小さくなる。 Regarding the fuel pressure Pd at the resonance rotational speed Nr2, when the first branch passage 21 is clogged with foreign matter, the inner diameter of the first branch passage 21 becomes smaller, and the same position functions as a throttle portion (orifice). Therefore, a pressure drop occurs. As a result, the fuel pressure Pd near the resonance rotational speed Nr1 becomes smaller than the normal fuel pressure Pd shown by the broken line in FIG.
次に、本実施形態の作用及び効果について説明する。
（１）燃料供給制御装置１は、上記のように正常時には共鳴回転数Ｎｒが所定回転数範囲Ｒｔｈとなることを踏まえ、燃圧Ｐｄ及び機関回転数Ｎeに基づいて検出した共鳴回転数Ｎｒが予め設定された所定回転数範囲Ｒｔｈ外である場合には、低圧通路１５に異常が発生したと判定できる。さらに、こうした共鳴現象は低圧通路１５に詰まりが生じ始めることで起こるため、燃料供給制御装置１は、異物により低圧通路１５が閉塞されて燃圧Ｐｄが異常に高い値となるよりも早い段階で低圧通路１５の異常を検出できる。
Next, the operation and effect of this embodiment will be described.
(1) The fuel supply control device 1 preliminarily sets the resonance rotational speed Nr detected based on the fuel pressure Pd and the engine rotational speed Ne in consideration of the fact that the resonance rotational speed Nr is in the predetermined rotational speed range Rth as described above. If it is outside the set predetermined rotation speed range Rth, it can be determined that an abnormality has occurred in the low pressure passage 15. Further, since such a resonance phenomenon occurs when the low pressure passage 15 starts to be clogged, the fuel supply control device 1 lowers the low pressure at a stage earlier than when the low pressure passage 15 is blocked by foreign matter and the fuel pressure Pd becomes an abnormally high value. An abnormality in the passage 15 can be detected.
本実施形態は、以下のように変更して実施することができる。本実施形態及び以下の変形例は、技術的に矛盾しない範囲で互いに組み合わせて実施することができる。
・上記実施形態では、燃料供給制御装置１に所定回転数範囲Ｒｔｈを１つだけ設定したが、これに限らない。燃圧Ｐｄの脈動は、ポート用燃料噴射弁１３からの燃料噴射に以外にも、例えば高圧燃料ポンプ１６の作動等によっても生じるため、燃料供給装置２の仕様に応じて共鳴現象が生じる機関回転数Ｎeが複数ある場合には、複数の所定回転数範囲Ｒｔｈを設定してもよい。
The present embodiment can be modified and implemented as follows. The present embodiment and the following modifications can be implemented in combination with each other within a technically consistent range.
In the above embodiment, the fuel supply control device 1 is set to have only one predetermined rotation speed range Rth, but the present invention is not limited to this. Since the pulsation of the fuel pressure Pd is caused not only by the fuel injection from the port fuel injection valve 13 but also by, for example, the operation of the high-pressure fuel pump 16, the engine speed at which a resonance phenomenon occurs according to the specifications of the fuel supply device 2 is generated. When there are a plurality of Nes, a plurality of predetermined rotation speed ranges Rth may be set.
Ｎｅ…機関回転数、Ｎｒ…共鳴回転数、Ｐｄ…燃圧、Ｒｔｈ…所定回転数範囲、１…燃料供給制御装置、２…燃料供給装置、１１…燃料タンク、１２…直噴用燃料噴射弁、１３…ポート用燃料噴射弁（燃料噴射弁）、１４…低圧燃料ポンプ（燃料ポンプ）、１５…低圧通路（燃料通路）、１６…高圧燃料ポンプ、２３…ポート用デリバリパイプ（デリバリパイプ）、２４…直噴用デリバリパイプ、５１…クランク角センサ、５２…燃圧センサ。 Ne ... Engine speed, Nr ... Resonance speed, Pd ... Fuel pressure, Rth ... Predetermined speed range, 1 ... Fuel supply control device, 2 ... Fuel supply device, 11 ... Fuel tank, 12 ... Direct injection fuel injection valve, 13 ... Port fuel injection valve (fuel injection valve), 14 ... Low pressure fuel pump (fuel pump), 15 ... Low pressure passage (fuel passage), 16 ... High pressure fuel pump, 23 ... Port delivery pipe (delivery pipe), 24 ... direct injection delivery pipe, 51 ... crank angle sensor, 52 ... fuel pressure sensor.
Claims (1)
前記燃料ポンプから供給される燃料が流通する燃料通路と、
前記燃料通路から供給される燃料を貯留するデリバリパイプと、
前記デリバリパイプ内に貯留される燃料を噴射する燃料噴射弁と、
前記デリバリパイプ内の燃圧を検出する燃圧センサとを備えた内燃機関の燃料供給装置を制御対象とし、
前記燃圧及び機関回転数に基づいて、前記燃圧が極大値となる機関回転数である共鳴回転数を検出し、該共鳴回転数が予め設定された所定回転数範囲外である場合に、前記燃料通路に異常が発生したと判定する燃料供給制御装置。 A fuel pump that pumps up the fuel in the fuel tank,
A fuel passage through which the fuel supplied from the fuel pump flows,
A delivery pipe for storing the fuel supplied from the fuel passage,
A fuel injection valve for injecting fuel stored in the delivery pipe;
A fuel supply device of an internal combustion engine including a fuel pressure sensor that detects a fuel pressure in the delivery pipe is controlled,
On the basis of the fuel pressure and the engine speed, the fuel pressure is detected as a resonance speed which is a maximum engine speed, and when the resonance speed is out of a preset predetermined speed range, the fuel is A fuel supply control device that determines that an abnormality has occurred in the passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018196142A JP7115210B2 (en) | 2018-10-17 | 2018-10-17 | fuel supply controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018196142A JP7115210B2 (en) | 2018-10-17 | 2018-10-17 | fuel supply controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2020063701A true JP2020063701A (en) | 2020-04-23 |
| JP7115210B2 JP7115210B2 (en) | 2022-08-09 |
Family
ID=70387019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018196142A Active JP7115210B2 (en) | 2018-10-17 | 2018-10-17 | fuel supply controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP7115210B2 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002295337A (en) * | 2001-03-29 | 2002-10-09 | Nippon Soken Inc | Fuel injection device for internal combustion engine |
| JP2006316771A (en) * | 2005-05-16 | 2006-11-24 | Denso Corp | Intake passage monitoring device for fuel supply device |
| JP2007016795A (en) * | 2006-10-23 | 2007-01-25 | Toyota Motor Corp | Fuel supply device of internal combustion engine |
| JP2008121594A (en) * | 2006-11-14 | 2008-05-29 | Denso Corp | Fuel system abnormality detection device |
| JP2014190180A (en) * | 2013-03-26 | 2014-10-06 | Toyota Motor Corp | Fuel injection device of internal combustion engine |
| JP2015004667A (en) * | 2013-05-20 | 2015-01-08 | 株式会社デンソー | Sensor device |
-
2018
- 2018-10-17 JP JP2018196142A patent/JP7115210B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002295337A (en) * | 2001-03-29 | 2002-10-09 | Nippon Soken Inc | Fuel injection device for internal combustion engine |
| JP2006316771A (en) * | 2005-05-16 | 2006-11-24 | Denso Corp | Intake passage monitoring device for fuel supply device |
| JP2007016795A (en) * | 2006-10-23 | 2007-01-25 | Toyota Motor Corp | Fuel supply device of internal combustion engine |
| JP2008121594A (en) * | 2006-11-14 | 2008-05-29 | Denso Corp | Fuel system abnormality detection device |
| JP2014190180A (en) * | 2013-03-26 | 2014-10-06 | Toyota Motor Corp | Fuel injection device of internal combustion engine |
| JP2015004667A (en) * | 2013-05-20 | 2015-01-08 | 株式会社デンソー | Sensor device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7115210B2 (en) | 2022-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4165572B2 (en) | Fuel supply device for internal combustion engine | |
| US7100574B2 (en) | Common rail type fuel injection system | |
| US6971370B2 (en) | Common rail type fuel injection system | |
| JP2017198096A (en) | Fuel supply system for engine | |
| JP2007023944A (en) | Fuel injection device and method for detecting failure of fuel injection device | |
| JP2008291808A (en) | Common rail type fuel injection device and force feed characteristic compensating method of high pressure pump | |
| JP6146274B2 (en) | Control device for internal combustion engine | |
| JP2005139975A (en) | Common rail type fuel injection device | |
| JP6090112B2 (en) | Control device for internal combustion engine | |
| JP6167830B2 (en) | Control device for internal combustion engine | |
| JP4888437B2 (en) | Fuel filter replacement time determination device and fuel supply system | |
| JP2010216279A (en) | Fuel injection control device and accumulator fuel injection system using the same | |
| JP7115210B2 (en) | fuel supply controller | |
| JP5556209B2 (en) | High-pressure fuel pump reference time calculation device | |
| US11384710B2 (en) | Control device for fuel injection system | |
| JP2018100644A (en) | Control device for internal combustion engine | |
| JP2007120356A (en) | Fuel pipe structure of internal combustion engine | |
| JP2004084538A (en) | Common rail type fuel injection system | |
| JP4329653B2 (en) | Accumulated fuel injection system | |
| US20170051715A1 (en) | Fuel rail for an internal combustion engine | |
| JP2014202075A (en) | Fuel injection device | |
| JP4457522B2 (en) | Fuel injection control device for internal combustion engine | |
| JP6330678B2 (en) | Pressure reducing valve controller | |
| JP2005351135A (en) | Fuel supply device of internal combustion engine | |
| JP2012229673A (en) | Fuel supply device for internal combustion engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20210729 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20220617 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20220628 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20220711 |
|
| R151 | Written notification of patent or utility model registration |
Ref document number: 7115210 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |