JP2008008298A5 - - Google Patents
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- JP2008008298A5 JP2008008298A5 JP2007179947A JP2007179947A JP2008008298A5 JP 2008008298 A5 JP2008008298 A5 JP 2008008298A5 JP 2007179947 A JP2007179947 A JP 2007179947A JP 2007179947 A JP2007179947 A JP 2007179947A JP 2008008298 A5 JP2008008298 A5 JP 2008008298A5
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- control device
- cut state
- injector
- shift
- 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.)
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- 239000000446 fuel Substances 0.000 claims 74
- 238000002347 injection Methods 0.000 claims 12
- 239000007924 injection Substances 0.000 claims 12
- 238000002485 combustion reaction Methods 0.000 claims 7
- 230000001133 acceleration Effects 0.000 claims 1
Claims (17)
前記制御装置は、車両の運転状態に基づいて燃料噴射が行われない燃料カット状態に移行する条件が成立したか否かを判定する条件成立判定手段と、
前記条件を判定する前に、車両の運転状態に基づいて前記燃料カット状態への移行を予測する移行予測手段と、
前記高圧燃料ポンプから前記インジェクタへの燃料の供給と停止とを制御する燃料供給制御手段と、を有し、
前記燃料供給制御手段は、前記移行予測手段により前記燃料カット状態に移行すると予測されたとき、前記インジェクタへの燃料供給を停止させる制御装置。 A control device for a high-pressure fuel pump for a vehicle for supplying fuel to an injector and directly injecting fuel into a cylinder of an internal combustion engine ,
The control device includes a condition establishment determination unit that determines whether or not a condition for shifting to a fuel cut state in which fuel injection is not performed is established based on a driving state of the vehicle ;
Before determining the condition, transition prediction means for predicting transition to the fuel cut state based on the driving state of the vehicle;
Anda fuel supply control means for controlling the supply and stop the fuel to the injector from the high pressure fuel pump,
The fuel supply control means, the transition time that is predicted to shift to the fuel cut state by the prediction means, is allowed Ru control device stops fuel supply to the injector.
前記インジェクタの燃料噴射量を制御する燃料噴射量制御手段を有し、Fuel injection amount control means for controlling the fuel injection amount of the injector;
前記燃料噴射量制御手段は、前記移行予測手段により前記燃料カット状態に移行すると予測されたとき、前記インジェクタの燃料噴射量を増量させることを特徴とする制御装置。The fuel injection amount control means increases the fuel injection quantity of the injector when the transition predicting means is predicted to shift to the fuel cut state.
前記燃料カット状態が終了したときに要求される燃料の目標燃圧値を、車両の運転状態に基づいて算出する目標燃圧値算出手段を有し、A target fuel pressure value calculating means for calculating a target fuel pressure value of the fuel required when the fuel cut state is ended based on a driving state of the vehicle;
前記燃料供給制御手段は、前記燃料カット状態に移行する前に前記目標燃圧値になるように前記インジェクタへの燃料供給を停止させることを特徴とする制御装置。The fuel supply control means stops the fuel supply to the injector so as to reach the target fuel pressure value before shifting to the fuel cut state.
前記燃料カット状態が終了したときに要求される燃料の目標燃圧値を、車両の運転状態に基づいて算出する目標燃圧値算出手段を有し、A target fuel pressure value calculating means for calculating a target fuel pressure value of the fuel required when the fuel cut state is ended based on a driving state of the vehicle;
前記移行予測手段により前記燃料カット状態に移行すると予測されたとき、前記燃料カット状態に移行する前に前記目標燃圧値になるように、前記燃料供給制御手段によって前記インジェクタへの燃料供給を停止させるとともに、前記燃料噴射量制御手段によって前記インジェクタの燃料噴射量を増量させることを特徴とする制御装置。When the transition predicting means predicts that the fuel cut state will be entered, the fuel supply control means stops the fuel supply to the injector so that the target fuel pressure value is reached before the fuel cut state is entered. In addition, the fuel injection amount of the injector is increased by the fuel injection amount control means.
複数のインジェクタへの燃料供給を制御し、前記複数のインジェクタの合計燃料噴射量を漸減させる燃料漸減期間を経て、前記燃料カット状態へ移行することを特徴とする制御装置。A control device that controls supply of fuel to a plurality of injectors and shifts to the fuel cut state after a fuel gradual decrease period that gradually decreases the total fuel injection amount of the plurality of injectors.
前記移行予測手段により前記燃料カット状態に移行すると予測されたとき、When predicted to shift to the fuel cut state by the shift prediction means,
前記燃料供給制御手段は、前記燃料カット状態に移行するまでに前記インジェクタから噴射される燃料の噴射量を予測して、前記目標燃圧値になるように前記インジェクタへの燃料供給を停止させることを特徴とする制御装置。The fuel supply control means predicts an injection amount of fuel injected from the injector before shifting to the fuel cut state, and stops the fuel supply to the injector so as to reach the target fuel pressure value. Control device characterized.
前記移行予測手段は、パラメータとして少なくとも前記内燃機関の回転数と前記回転数の上昇率とを用いて、前記燃料カット状態への移行を予測することを特徴とする制御装置。 The control device according to any one of claims 1 to 6,
The transition predicting means, at least the used rotation speed of the internal combustion engine and the said rotational speed increase rate, to that control device, characterized in that predicting the transition to the fuel cut state as a parameter.
前記移行予測手段は、変速段のパラメータを用いて、前記燃料カット状態への移行を予測することを特徴とする制御装置。The shift prediction means predicts a shift to the fuel cut state using a shift speed parameter.
前記目標燃圧値は、成層燃焼からリーン燃焼までを可能とする燃圧値に設定されることを特徴とする制御装置。 The control device according to claim 3, 4 or 6,
The target fuel pressure value shall be the characteristic control device to be set to a fuel pressure value that enables to lean combustion from stratified charge combustion.
前記燃料供給制御手段は、車両の加速判定に応じて、前記インジェクタへの燃料供給の停止を解除することを特徴とする制御装置。The fuel supply control means releases the stop of fuel supply to the injector according to the acceleration determination of the vehicle.
前記燃料供給制御手段は、燃圧が所定圧力以下まで下がったとき、前記インジェクタへの燃料供給の停止を解除することを特徴とする制御装置。The fuel supply control means releases the stop of the fuel supply to the injector when the fuel pressure falls below a predetermined pressure.
前記燃料供給制御手段は、前記内燃機関の回転数の上昇率に応じて、前記インジェクタへの燃料供給の停止を解除することを特徴とする制御装置。The fuel supply control means releases the stop of fuel supply to the injector according to the rate of increase in the rotational speed of the internal combustion engine.
前記燃料カット状態に移行すると予測された時点から実際に前記燃料カット状態に移行するまでにおける前記インジェクタからの燃料噴射による燃料圧力の低下を見込んで、燃料供給を停止させるタイミングを決定することを特徴とする制御装置。The timing for stopping the fuel supply is determined in anticipation of a decrease in fuel pressure due to fuel injection from the injector from the time when it is predicted to shift to the fuel cut state to the actual shift to fuel cut state. Control device.
前記制御装置は、燃料噴射が行われない燃料カット状態に移行する条件が成立したか否かを車両の運転状態に基づいて判定し、The control device determines whether or not a condition for shifting to a fuel cut state where fuel injection is not performed is established based on a driving state of the vehicle,
前記条件が成立したか否かを判定する前に、前記燃料カット状態への移行を車両の運転状態に基づいて予測し、Before determining whether or not the condition is satisfied, predict the transition to the fuel cut state based on the driving state of the vehicle,
前記燃料カット状態に移行すると予測されたとき、前記インジェクタへの燃料供給を停止させる制御装置。A control device that stops the fuel supply to the injector when it is predicted to shift to the fuel cut state.
前記燃料カット状態に移行すると予測されたとき、前記インジェクタの燃料噴射量を増量させることを特徴とする制御装置。A control device that increases the fuel injection amount of the injector when it is predicted to shift to the fuel cut state.
パラメータとして少なくとも前記内燃機関の回転数と前記回転数の上昇率とを用いて、前記燃料カット状態への移行を予測することを特徴とする制御装置。A control device that predicts the transition to the fuel cut state using at least the rotational speed of the internal combustion engine and the rate of increase of the rotational speed as parameters.
変速段のパラメータを用いて、前記燃料カット状態への移行を予測することを特徴とする制御装置。A control device that predicts a shift to the fuel cut state using a parameter of a shift speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007179947A JP4418485B2 (en) | 2007-07-09 | 2007-07-09 | Fuel pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007179947A JP4418485B2 (en) | 2007-07-09 | 2007-07-09 | Fuel pressure control device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001225319A Division JP4086486B2 (en) | 2001-07-26 | 2001-07-26 | Fuel pressure control device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009200572A Division JP4857372B2 (en) | 2009-08-31 | 2009-08-31 | Fuel pressure control device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2008008298A JP2008008298A (en) | 2008-01-17 |
| JP2008008298A5 true JP2008008298A5 (en) | 2009-06-18 |
| JP4418485B2 JP4418485B2 (en) | 2010-02-17 |
Family
ID=39066703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2007179947A Expired - Fee Related JP4418485B2 (en) | 2007-07-09 | 2007-07-09 | Fuel pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4418485B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5691583B2 (en) * | 2011-02-07 | 2015-04-01 | 株式会社デンソー | Solenoid valve and fuel supply pump |
| JP5913958B2 (en) * | 2011-12-21 | 2016-05-11 | ボッシュ株式会社 | Accumulated fuel injection control device |
| JP6380373B2 (en) | 2015-12-25 | 2018-08-29 | トヨタ自動車株式会社 | Fuel pressure control device |
-
2007
- 2007-07-09 JP JP2007179947A patent/JP4418485B2/en not_active Expired - Fee Related
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