JP3371625B2 - Control device for internal combustion engine for vehicles - Google Patents
Control device for internal combustion engine for vehiclesInfo
- Publication number
- JP3371625B2 JP3371625B2 JP18033895A JP18033895A JP3371625B2 JP 3371625 B2 JP3371625 B2 JP 3371625B2 JP 18033895 A JP18033895 A JP 18033895A JP 18033895 A JP18033895 A JP 18033895A JP 3371625 B2 JP3371625 B2 JP 3371625B2
- Authority
- JP
- Japan
- Prior art keywords
- internal combustion
- combustion engine
- fuel
- torque
- deceleration
- 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.)
- Expired - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 235
- 239000000446 fuel Substances 0.000 claims description 174
- 238000001514 detection method Methods 0.000 claims description 33
- 238000002347 injection Methods 0.000 claims description 25
- 239000007924 injection Substances 0.000 claims description 25
- 238000004880 explosion Methods 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 7
- 239000000498 cooling water Substances 0.000 description 5
- 230000003247 decreasing effect Effects 0.000 description 5
- 238000010248 power generation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 206010011732 Cyst Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 208000031513 cyst Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
Landscapes
- Hybrid Electric Vehicles (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、内燃機関の減速時
に、内燃機関への燃料供給を停止して内燃機関の燃料消
費を抑える車両用内燃機関の制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an internal combustion engine for a vehicle, which suppresses fuel consumption of the internal combustion engine by stopping fuel supply to the internal combustion engine during deceleration of the internal combustion engine.
【０００２】[0002]
【従来の技術】近年、車両を駆動する内燃機関の燃料消
費を抑える技術として、特開平２−２５６８４３号公報
に開示された技術が知られている。この技術は、車両の
減速時に、燃料の供給を停止して燃料消費を抑えるとと
もに、燃料の供給停止から燃料が再噴射する状態に至る
回転域で、電動機を作動させて内燃機関にトルクを付与
し、内燃機関の回転数が所定回転数以下に低下しないよ
うに保つものである。そして、この技術では、トルクを
付与する時間は、内燃機関の減速度に応じて決定され、
減速度が大きい時にはトルクの付与時間が長く、逆に減
速度が小さい時にはトルクの付与時間が短くなる。2. Description of the Related Art Recently, as a technique for suppressing fuel consumption of an internal combustion engine for driving a vehicle, a technique disclosed in Japanese Patent Laid-Open No. 256568/1990 is known. This technology stops fuel supply to reduce fuel consumption when the vehicle decelerates, and operates the electric motor to apply torque to the internal combustion engine in the rotation range from the stop of fuel supply to the state of reinjection of fuel. However, the rotation speed of the internal combustion engine is maintained so as not to drop below a predetermined rotation speed. Then, in this technique, the time to apply the torque is determined according to the deceleration of the internal combustion engine,
When the deceleration is large, the torque application time is long, and conversely, when the deceleration is small, the torque application time is short.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記に
示した技術では、エアコンなどのような内燃機関に与え
る負荷が大きい補機類が作動している等、燃料供給の停
止時に、内燃機関に大きな負荷が加わっている状態があ
る。このような状態では、内燃機関にトルクを付与する
時間を長くするだけでは、内燃機関の回転数の落ち込み
を充分に抑制することができず、内燃機関の回転数がふ
らつく不具合が生じる。However, in the above-described technique, when the fuel supply is stopped, such as when an auxiliary device such as an air conditioner that has a large load on the internal combustion engine is operating, the internal combustion engine has a large load. There is a state where the load is applied. In such a state, it is not possible to sufficiently suppress the decrease in the rotational speed of the internal combustion engine only by increasing the time for applying the torque to the internal combustion engine, which causes a problem that the rotational speed of the internal combustion engine fluctuates.
【０００４】なお、この不具合を解決するために、内燃
機関に付与するトルク量を大きく設定した場合は、補機
類の非作動など、内燃機関の負荷が小さい場合では内燃
機関の回転数が上昇するとともに、過剰なエネルギーを
消費するなどの不具合が生じる。In order to solve this problem, when the amount of torque applied to the internal combustion engine is set to a large value, the rotational speed of the internal combustion engine increases when the load on the internal combustion engine is small, such as when auxiliary machinery is not operating. At the same time, problems such as excessive energy consumption occur.
【０００５】[0005]
【発明の目的】本発明は、上記の事情に鑑みてなされた
もので、その目的は、燃料の供給停止から燃料が再噴射
して内燃機関が再爆する回転域における内燃機関の回転
のふらつきを抑える車両用内燃機関の制御装置の提供に
ある。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances. An object of the present invention is to fluctuate the rotation of the internal combustion engine in a rotation range in which the fuel is reinjected after the fuel supply is stopped and the internal combustion engine is re-exploded. (EN) A control device for a vehicle internal combustion engine that suppresses
【０００６】[0006]
車両用内燃機関の制御装置は、
（ａ）燃料の燃焼によって回転動力を発生する内燃機関
と、
（ｂ）この内燃機関へ燃料の供給を行う燃料噴射手段
と、
（ｃ）前記内燃機関の回転数を検出する回転数検出手段
と、
（ｄ）車両の減速を検出する減速検出手段と、
（ｅ）この減速検出手段が減速を検出した際、前記回転
数検出手段の検出する前記内燃機関の回転数が、あらか
じめ設定された燃料復帰回転数に低下するまで、前記燃
料噴射手段による前記内燃機関への燃料の供給停止を行
う燃料カット手段と、
（ｆ）前記内燃機関に回転トルクを付与するトルク付与
手段と、
（ｇ）前記内燃機関にかかる負荷を検出する内燃機関負
荷検出手段と、
（ｈ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記内燃機関負荷検出手段の検出する
前記内燃機関にかかる負荷に応じて、前記トルク付与手
段が前記内燃機関へ与えるトルク量を決定するトルク量
決定手段と、
（ｉ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記回転数検出手段の検出する前記内
燃機関の回転数が、あらかじめ設定されたアシスト開始
回転数より低下すると、前記トルク量決定手段で決定さ
れたトルク量を、前記トルク付与手段によって前記内燃
機関に与える付与作動手段とを備え、 前記アシスト開始
回転数は、前記燃料復帰回転数と同じ回転数であること
を特徴とする。 The control device for an internal combustion engine for a vehicle includes (a) an internal combustion engine that generates rotational power by combustion of fuel, (b) fuel injection means that supplies fuel to the internal combustion engine, and (c) rotation of the internal combustion engine. A rotation speed detecting means for detecting the number of revolutions; (d) a deceleration detecting means for detecting a deceleration of the vehicle; and (e) a deceleration detecting means for detecting the deceleration of the internal combustion engine detected by the revolution speed detecting means. Fuel cut means for stopping the supply of fuel to the internal combustion engine by the fuel injection means until the rotational speed drops to a preset fuel return rotational speed; and (f) applying rotational torque to the internal combustion engine. Torque applying means, (g) internal combustion engine load detecting means for detecting a load applied to the internal combustion engine, and (h) the internal combustion engine load detecting means while the fuel supply to the internal combustion engine is stopped by the fuel cutting means. Torque amount determining means for determining the amount of torque applied to the internal combustion engine by the torque applying means according to the load applied to the internal combustion engine, which is detected by (i) supply of fuel to the internal combustion engine by the fuel cut means. During stop, when the rotation speed of the internal combustion engine detected by the rotation speed detection means is lower than a preset assist start rotation speed, the torque amount determined by the torque amount determination means is changed by the torque application means. and a grant actuating means for imparting to said internal combustion engine, the assist start
The rotation speed must be the same as the fuel return rotation speed.
Is characterized by.
【０００７】〔請求項２の手段〕
請求項１に記載の車両用内燃機関の制御装置において、
前記トルク量決定手段が決定する前記内燃機関へ与える
トルク量は、０から連続的に増加し、トルク付与終了時
に再び０となるように連続的に減少することを特徴とす
る。[Means for Claim 2] In the control device for an internal combustion engine for a vehicle according to claim 1,
Apply to the internal combustion engine determined by the torque amount determining means
The torque amount increases continuously from 0, and when the torque application is completed
It is characterized by continuously decreasing so as to become 0 again .
【０００８】〔請求項３の手段〕車両用内燃機関の制御装置は、 （ａ）燃料の燃焼によって回転動力を発生する内燃機関
と、 （ｂ）この内燃機関へ燃料の供給を行う燃料噴射手段
と、 （ｃ）前記内燃機関の回転数を検出する回転数検出手段
と、 （ｄ）車両の減速を検出する減速検出手段と、 （ｅ）この減速検出手段が減速を検出した際、前記回転
数検出手段の検出する前記内燃機関の回転数が、あらか
じめ設定された燃料復帰回転数に低下するまで、前記燃
料噴射手段による前記内燃機関への燃料の供給停止を行
う燃料カット手段と、 （ｆ）前記内燃機関に回転トルクを付与するトルク付与
手段と、 （ｇ）前記内燃機関にかかる負荷を検出する内燃機関負
荷検出手段と、 （ｈ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記内燃機関負荷検出手段の検出する
前記内燃機関にかかる負荷に応じて、前記トルク付与手
段が前記内燃機関へ与えるトルク量を決定するトルク量
決定手段と、 （ｉ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記回転数検出手段の検出する前記内
燃機関の回転数が、あらかじめ設定されたアシスト開始
回転数より低下すると、前記トルク量決定手段で決定さ
れたトルク量を、前記トルク付与手段によって前記内燃
機関に与える付与作動手段とを備え、
前記トルク量決定
手段が決定する前記内燃機関へ与えるトルク量は、０か
ら連続的に増加し、トルク付与終了時に再び０となるよ
うに連続的に減少することを特徴とする。[Means for Claim 3] The control device for an internal combustion engine for a vehicle is (a) an internal combustion engine for generating rotational power by combustion of fuel.
And (b) fuel injection means for supplying fuel to this internal combustion engine
And (c) rotation speed detection means for detecting the rotation speed of the internal combustion engine
If, (d) and the deceleration detecting means for detecting a deceleration of the vehicle, (e) when the deceleration detecting means detects a deceleration, the rotation
The number of revolutions of the internal combustion engine detected by the number detecting means is
The fuel is returned to the preset fuel return speed until
The fuel injection means stops the supply of fuel to the internal combustion engine.
Fuel cutting means, and (f) torque application for applying rotational torque to the internal combustion engine.
And (g) an internal combustion engine negative for detecting a load applied to the internal combustion engine.
Load detection means, and (h) fuel to the internal combustion engine by the fuel cut means
Detection by the internal combustion engine load detection means during the suspension of supply of
Depending on the load applied to the internal combustion engine, the torque application
Amount of torque that determines the amount of torque that the stage gives to the internal combustion engine
Determining means, and (i) fuel to the internal combustion engine by the fuel cutting means
When the supply of the
Assistance preset for the number of revolutions of the fuel engine
When the speed falls below the rotational speed, it is determined by the torque amount determining means.
The generated torque amount by the torque applying means to the internal combustion engine.
The torque amount to be given to the internal combustion engine, which is determined by the torque amount determining means, continuously increases from 0 and continuously decreases to 0 again at the end of torque application. It is characterized by
【０００９】〔請求項４の手段〕請求項１ないし請求項
３のいずれかに記載の車両用内燃機関の制御装置におい
て、前記燃料カット手段による前記内燃機関への燃料の
供給停止が終わり、前記内燃機関への燃料の再噴射後、
最初の爆発が発生した後に、前記トルク量決定手段は、
前記内燃機関へ与えるトルク量を０とすることを特徴と
する。[Means of claim 4] In the control device for an internal combustion engine for a vehicle according to any one of claims 1 to 3, the supply of fuel to the internal combustion engine by the fuel cut means is stopped, and After reinjection of fuel into the internal combustion engine,
After the first explosion occurs, the torque amount determining means,
The torque amount applied to the internal combustion engine is set to 0.
【００１０】〔請求項５の手段〕車両用内燃機関の制御装置は、 （ａ）燃料の燃焼によって回転動力を発生する内燃機関
と、 （ｂ）この内燃機関へ燃料の供給を行う燃料噴射手段
と、 （ｃ）前記内燃機関の回転数を検出する回転数検出手段
と、 （ｄ）車両の減速を検出する減速検出手段と、 （ｅ）この減速検出手段が減速を検出した際、前記回転
数検出手段の検出する前記内燃機関の回転数が、あらか
じめ設定された燃料復帰回転数に低下するまで、前記燃
料噴射手段による前記内燃機関への燃料の供給停止を行
う燃料カット手段と、 （ｆ）前記内燃機関に回転トルクを付与するトルク付与
手段と、 （ｇ）前記内燃機関にかかる負荷を検出する内燃機関負
荷検出手段と、 （ｈ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記内燃機関負荷検出手段の検出する
前記内燃機関にかかる負荷に応じて、前記トルク付与手
段が前記内燃機関へ与えるトルク量を決定するトルク量
決定手段と、 （ｉ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記回転数検出手段の検出する前記内
燃機関の回転数が、あらかじめ設定されたアシスト開始
回転数より低下すると、前記トルク量決定手段で決定さ
れたトルク量を、前記トルク付与手段によって前記内燃
機関に与える付与作動手段とを備え、 前記燃料カット手
段による前記内燃機関への燃料の供給停止が終わり、前
記内燃機関への燃料の再噴射後、最初の爆発が発生した
後に、 前記トルク量決定手段は、前記内燃機関へ与える
トルク量を０とすることを特徴とする車両用内燃機関の
制御装置。 [Means for Claim 5] A control device for an internal combustion engine for a vehicle is (a) an internal combustion engine for generating rotational power by combustion of fuel.
And (b) fuel injection means for supplying fuel to this internal combustion engine
And (c) rotation speed detection means for detecting the rotation speed of the internal combustion engine
If, (d) and the deceleration detecting means for detecting a deceleration of the vehicle, (e) when the deceleration detecting means detects a deceleration, the rotation
The number of revolutions of the internal combustion engine detected by the number detecting means is
The fuel is returned to the preset fuel return speed until
The fuel injection means stops the supply of fuel to the internal combustion engine.
Fuel cutting means, and (f) torque application for applying rotational torque to the internal combustion engine.
And (g) an internal combustion engine negative for detecting a load applied to the internal combustion engine.
Load detection means, and (h) fuel to the internal combustion engine by the fuel cut means
Detection by the internal combustion engine load detection means during the suspension of supply of
Depending on the load applied to the internal combustion engine, the torque application
Amount of torque that determines the amount of torque that the stage gives to the internal combustion engine
Determining means, and (i) fuel to the internal combustion engine by the fuel cutting means
When the supply of the
Assistance preset for the number of revolutions of the fuel engine
When the speed falls below the rotational speed, it is determined by the torque amount determining means.
The generated torque amount by the torque applying means to the internal combustion engine.
And a fuel applying means for giving to the engine,
Stop of fuel supply to the internal combustion engine
First explosion after reinjection of fuel into internal combustion engine
After that, the torque amount determining means applies the torque to the internal combustion engine.
The internal combustion engine for a vehicle is characterized by setting the torque amount to 0.
Control device.
【００１１】[0011]
【００１２】[0012]
【００１３】[0013]
【００１４】[0014]
【作用】車両が減速して、減速検出手段が車両の減速状
態を判断すると、燃料カット手段が燃料噴射手段によっ
て燃料供給を停止する。内燃機関の回転数が燃料復帰回
転数に低下すると、燃料カット手段による燃料カットが
終了し、燃料噴射手段によって内燃機関に燃料が供給さ
れる。When the vehicle decelerates and the deceleration detecting means determines the deceleration state of the vehicle, the fuel cut means stops the fuel supply by the fuel injection means. When the rotation speed of the internal combustion engine drops to the fuel return rotation speed, the fuel cut by the fuel cut means ends, and the fuel is supplied to the internal combustion engine by the fuel injection means.
【００１５】一方、燃料カット手段による燃料の供給停
止中、トルク量決定手段は、内燃機関負荷検出手段の検
出した内燃機関の負荷から、内燃機関へ与えるトルク量
を決定する。そして、燃料カット手段による燃料の供給
停止中に、内燃機関の回転数がアシスト開始回転数より
低下すると、付与作動手段は、トルク量決定手段で決定
されたトルク量を、トルク付与手段により内燃機関に与
える。On the other hand, the torque amount determining means determines the torque amount to be applied to the internal combustion engine from the load of the internal combustion engine detected by the internal combustion engine load detecting means while the fuel supply is stopped by the fuel cut means. When the rotation speed of the internal combustion engine is lower than the assist start rotation speed while the fuel supply by the fuel cut means is stopped, the imparting actuation means causes the torque imparting means to apply the torque amount determined by the torque amount determining means to the internal combustion engine. Give to.
【００１６】つまり、燃料カットによって内燃機関が回
転トルクを発生していない状態で、内燃機関の回転数が
アシスト開始回転数より低下すると、内燃機関にかかる
負荷が大きい時はトルク付与手段によって内燃機関に大
きなトルクを与え、逆に負荷が小さい時はトルク付与手
段によって内燃機関に小さなトルクを与える。なお、請
求項１の発明では、アシスト開始回転数は、燃料復帰回
転数と同じ回転数であり、請求項３の発明では、トルク
量決定手段が決定する内燃機関へ与えるトルク量は、０
から連続的に増加し、トルク付与終了時に再び０となる
ように連続的に減少するものであり、請求項５の発明で
は、燃料カット手段による内燃機関への燃料の供給停止
が終わり、内燃機関への燃料の再噴射後、最初の爆発が
発生した後に、トルク量決定手段は、内燃機関へ与える
トルク量を０とするものである。 That is, when the rotational speed of the internal combustion engine is lower than the assist start rotational speed in the state where the internal combustion engine does not generate the rotational torque due to the fuel cut, when the load applied to the internal combustion engine is large, the internal combustion engine is operated by the torque applying means. When a load is small, a small torque is applied to the internal combustion engine by the torque applying means. In addition, contract
In the invention of claim 1, the assist start rotation speed is the fuel return speed.
The number of revolutions is the same as the number of revolutions.
The torque amount applied to the internal combustion engine determined by the amount determination means is 0.
Continuously increases from 0 to 0 again at the end of torque application
In the invention of claim 5,
Stop the fuel supply to the internal combustion engine by the fuel cut means
The first explosion after reinjection of fuel into the internal combustion engine
After being generated, the torque amount determining means gives the internal combustion engine.
The amount of torque is set to 0.
【００１７】[0017]
【発明の効果】本発明の車両用内燃機関の制御装置は、
上記の作用で示したように、燃料カットによって内燃機
関が回転トルクを発生していない状態で、内燃機関の回
転数がアシスト開始回転数より低下すると、内燃機関に
かかる負荷に応じたトルク量を内燃機関に与えて内燃機
関をアシストするため、燃料の供給停止から燃料が再噴
射して内燃機関が再爆する回転域における内燃機関の回
転数を、補機類などによる内燃機関の負荷変動に関係な
く、安定化させることができる。また、負荷が小さい時
におけるアシストは、内燃機関に付与するトルク量が小
さく抑えられるため、トルク付与手段が消費するエネル
ギーが低く抑えられる。つまり、最小限の消費エネルギ
ーで内燃機関の回転数を安定化させることができる。The control device for a vehicle internal combustion engine according to the present invention comprises:
As described above, when the internal combustion engine does not generate the rotational torque due to the fuel cut and the rotational speed of the internal combustion engine becomes lower than the assist start rotational speed, the torque amount according to the load applied to the internal combustion engine is reduced. In order to assist the internal combustion engine by giving it to the internal combustion engine, the rotation speed of the internal combustion engine in the rotation range in which the fuel is re-injected after the fuel supply is stopped and the internal combustion engine is re-explosed is used as a load fluctuation of the internal combustion engine due to auxiliary machinery. It can be stabilized regardless. Further, since the amount of torque applied to the internal combustion engine is suppressed to a small amount in assist when the load is small, the energy consumed by the torque applying means can be suppressed to a low level. That is, the rotational speed of the internal combustion engine can be stabilized with the minimum energy consumption.
【００１８】[0018]
【実施例】次に、本発明の車両用内燃機関の制御装置
を、図に示す実施例に基づき説明する。
〔第１実施例の構成〕図１ないし図５は実施例を示すも
ので、まず図２を用いて車両用内燃機関の制御装置の概
略構成を説明する。自動車は、ガソリンや軽油等の燃料
の燃焼によって得られたエネルギーにより回転動力を発
生する内燃機関１と、この内燃機関１の発生した回転動
力を、アクセル開度や車速等の車両走行状態に応じてギ
ア比を自動可変して駆動輪へ伝える変速機２とを備え
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a control device for an internal combustion engine for a vehicle according to the present invention will be explained based on an embodiment shown in the drawings. [Structure of First Embodiment] FIGS. 1 to 5 show an embodiment. First, a schematic structure of a control device for an internal combustion engine for a vehicle will be described with reference to FIG. In an automobile, an internal combustion engine 1 that generates rotational power by energy obtained by combustion of fuel such as gasoline or light oil, and the rotational power generated by the internal combustion engine 1 according to a vehicle running state such as accelerator opening and vehicle speed. And a transmission 2 for automatically changing the gear ratio and transmitting it to the drive wheels.
【００１９】なお、変速機２は、自動変速機であっても
マニュアル式変速機であっても良い。自動変速機が用い
られるのであれば、本発明にかかる回転域では、自動変
速機に搭載される直結クラッチはOFF され、車輪と内燃
機関１との結合が解除された状態であり、マニュアル式
変速機が用いられるのであれば、本発明にかかる回転域
では、乗員によってクラッチが踏まれて車輪と内燃機関
１との結合が解除された状態である。The transmission 2 may be an automatic transmission or a manual transmission. If the automatic transmission is used, in the rotation range according to the present invention, the direct coupling clutch mounted on the automatic transmission is turned off, the connection between the wheel and the internal combustion engine 1 is released, and the manual transmission is used. If the machine is used, in the rotation range according to the present invention, the clutch is stepped on by the occupant and the connection between the wheel and the internal combustion engine 1 is released.
【００２０】内燃機関１の出力軸には、電動機と発電機
の両方を兼ねる電動発電機３が設けられている。この電
動発電機３は、内燃機関１の出力軸に駆動されることで
電力を発生し、この発生した電力はバッテリ４に蓄えら
れる。また、電動発電機３は、バッテリ４に蓄えられた
電力の供給を受けると回転動力を発生して、内燃機関１
の出力軸に回転トルクを付与するもので、内燃機関１の
始動および燃料カット時における回転の安定化を果た
す。この電動発電機３の発電作動と電動作動の切替は、
インバータを用いた電力制御部５によって行われ、この
電力制御部５の作動はマイクロコンピュータを用いた制
御装置６によって制御される。The output shaft of the internal combustion engine 1 is provided with a motor / generator 3 which serves as both a motor and a generator. The motor generator 3 is driven by the output shaft of the internal combustion engine 1 to generate electric power, and the generated electric power is stored in the battery 4. In addition, the motor generator 3 generates rotational power when receiving the electric power stored in the battery 4, and the internal combustion engine 1
A rotational torque is applied to the output shaft of No. 1 to stabilize the rotation of the internal combustion engine 1 at the time of starting and fuel cut. Switching between power generation operation and electric operation of the motor generator 3
This is performed by the power control unit 5 using an inverter, and the operation of the power control unit 5 is controlled by the control device 6 using a microcomputer.
【００２１】上記、電動発電機３および電力制御部５を
具体的に述べると、電動発電機３は例えば三相同期機
で、内燃機関１の出力軸と一体に回転する三相励磁コイ
ルと、ハウジングに固定された三相アーマチュアコイル
とを備える。三相励磁コイルは、電力制御部５に設けら
れたトランジスタを介してバッテリ４に接続され、この
トランジスタのON-OFF制御により励磁電流の通電デュー
ティー比が制御され発電量が変化する。また、三相アー
マチュアコイルは、電力制御部５に設けられたインバー
タを介してバッテリ４に接続され、インバータの制御に
よって、発生する回転トルクが変化する。なお、電力制
御部５は、後述する付与作動手段２５によって、電動発
電機３を電動作動させる指示信号を受ける以外は、バッ
テリ電圧に応じて電動発電機３を発電作動させるもので
ある。The motor generator 3 and the power control unit 5 will be specifically described. The motor generator 3 is, for example, a three-phase synchronous machine, and a three-phase exciting coil that rotates integrally with the output shaft of the internal combustion engine 1, And a three-phase armature coil fixed to the housing. The three-phase excitation coil is connected to the battery 4 via a transistor provided in the power control unit 5, and the ON / OFF control of this transistor controls the energization duty ratio of the excitation current to change the amount of power generation. The three-phase armature coil is connected to the battery 4 via an inverter provided in the power control unit 5, and the rotational torque generated changes under the control of the inverter. The power control unit 5 causes the motor / generator 3 to generate electric power in accordance with the battery voltage, except for receiving an instruction signal to electrically operate the motor / generator 3 by the applying operation unit 25 described later.
【００２２】内燃機関１に供給される燃料は、燃料噴射
手段７によって調節される。この燃料噴射手段７は、内
燃機関１の吸気管内へ燃料を噴射する噴射装置で、燃料
の供給停止も可能なものである。そして、この燃料噴射
手段７による燃料の噴射量は、制御装置６によって制御
される。The fuel supplied to the internal combustion engine 1 is adjusted by the fuel injection means 7. The fuel injection means 7 is an injection device that injects fuel into the intake pipe of the internal combustion engine 1, and can also stop the supply of fuel. The amount of fuel injected by the fuel injection means 7 is controlled by the control device 6.
【００２３】制御装置６は、上述のように、少なくと
も、電力制御部５および燃料噴射手段７の制御を行うも
ので、内燃機関１や車両の状態等を検出するために、内
燃機関１の回転数Ｎｅを検出する回転数センサ１１（回
転数検出手段に相当する）、乗員に踏力によって内燃機
関１の駆動負荷が調節されるアクセルペダルの開度（以
下、スロットル開度）Ｔａを検出するスロットル開度セ
ンサ１２、車両走行速度Ｖを検出する車速センサ１３、
内燃機関１の冷却水の温度Ｔｃを検出する冷却水温セン
サ１４、内燃機関１に取り付けられたスパークプラグ
（図示しない）への点火信号を読み取る点火信号センサ
１５等を備える。As described above, the control unit 6 controls at least the electric power control unit 5 and the fuel injection means 7, and rotates the internal combustion engine 1 in order to detect the state of the internal combustion engine 1 and the vehicle. A rotation speed sensor 11 (corresponding to rotation speed detection means) that detects the number Ne, and a throttle that detects the opening degree (hereinafter, throttle opening degree) Ta of an accelerator pedal in which the driving load of the internal combustion engine 1 is adjusted by the occupant's pedaling force. An opening sensor 12, a vehicle speed sensor 13 that detects a vehicle traveling speed V,
A cooling water temperature sensor 14 that detects the temperature Tc of the cooling water of the internal combustion engine 1, an ignition signal sensor 15 that reads an ignition signal to a spark plug (not shown) attached to the internal combustion engine 1, and the like are provided.
【００２４】制御装置６は、各センサ等の信号を受けて
演算処理を行うＣＰＵ６ａ、プログラムや予め設定され
た数値を記憶するＲＯＭ６ｂを備える。また、この制御
装置６は、図１に示すように、減速検出手段２１、燃料
カット手段２２、内燃機関負荷検出手段２３、トルク量
決定手段２４、付与作動手段２５を備える。The control device 6 is provided with a CPU 6a which receives signals from the respective sensors and the like and performs arithmetic processing, and a ROM 6b which stores programs and preset numerical values. As shown in FIG. 1, the control device 6 also includes deceleration detection means 21, fuel cut means 22, internal combustion engine load detection means 23, torque amount determination means 24, and imparting actuation means 25.
【００２５】減速検出手段２１は、アクセルペダルが戻
され、スロットル開度Ｔａが０°の状態にされると車両
の減速状態を判断する。燃料カット手段２２は、減速検
出手段２１が減速を検出し、且つ車速Ｖが所定速度（例
えば１０ｋｍ／ｈ）より速く、回転数センサ１１の検出
する回転数Ｎｅが所定回転数（例えば１０００ｒｐｍ）
よりも高く、内燃機関１の冷却水の温度Ｔｃが所定温度
（例えば７０℃）よりも高い状態の時に、あらかじめ設
定された燃料復帰回転数Ｎｅｒ（例えばアイドリング回
転数よりわずかに高く設定された回転数）に低下するま
で、燃料噴射手段７による内燃機関１への燃料の供給停
止（燃料カット）を行う。The deceleration detecting means 21 determines the deceleration state of the vehicle when the accelerator pedal is released and the throttle opening Ta is set to 0 °. In the fuel cut means 22, the deceleration detection means 21 detects deceleration, the vehicle speed V is faster than a predetermined speed (for example, 10 km / h), and the rotation speed Ne detected by the rotation speed sensor 11 is a predetermined rotation speed (for example, 1000 rpm).
And the temperature Tc of the cooling water of the internal combustion engine 1 is higher than a predetermined temperature (eg, 70 ° C.), a preset fuel return speed Ner (eg, a speed set slightly higher than the idling speed). The fuel supply to the internal combustion engine 1 is stopped by the fuel injection means 7 (fuel cut) until the number of fuel cells is decreased to a certain number.
【００２６】内燃機関負荷検出手段２３は、燃料カット
手段２２による燃料カット中に内燃機関１にかかる負荷
を検出するもので、本実施例では回転数センサ１１の検
出する回転数Ｎｅを時間微分して、内燃機関１にかかる
負荷を検出する。トルク量決定手段２４は、燃料カット
手段２２による燃料カット中に、内燃機関負荷検出手段
２３の検出する負荷に応じて、内燃機関１へ与えるトル
ク量を決定する。The internal combustion engine load detection means 23 detects the load applied to the internal combustion engine 1 during the fuel cut by the fuel cut means 22, and in this embodiment, the rotational speed Ne detected by the rotational speed sensor 11 is differentiated with respect to time. Then, the load applied to the internal combustion engine 1 is detected. The torque amount determining means 24 determines the amount of torque applied to the internal combustion engine 1 according to the load detected by the internal combustion engine load detecting means 23 during the fuel cut by the fuel cutting means 22.
【００２７】付与作動手段２５は、燃料カット手段２２
による燃料カット中に内燃機関１の回転数が、あらかじ
め設定されたアシスト開始回転数（例えば、燃料復帰回
転数Ｎｅｒと同じ回転数）より低下すると、トルク量決
定手段２４で決定されたトルク量を、電動発電機３を電
動作動させて内燃機関１に与える。The applying actuating means 25 is the fuel cutting means 22.
When the rotational speed of the internal combustion engine 1 becomes lower than a preset assist start rotational speed (for example, the same rotational speed as the fuel return rotational speed Ner) during the fuel cut due to, the torque amount determined by the torque amount determination means 24 is reduced. , The motor generator 3 is electrically operated and supplied to the internal combustion engine 1.
【００２８】電動発電機３の電動作動を終了する終了時
は、燃料カット手段２２による燃料カットが終わり、内
燃機関１へ燃料の再噴射後、最初の爆発が発生すると、
電動発電機３（トルク付与手段）は内燃機関１へ与える
トルク量を０とする。つまり、再爆すると、電動発電機
３は電動作動を終え、電動発電機３を発電作動に切り換
える。At the end of ending the electric operation of the motor generator 3, the fuel cut by the fuel cut means 22 ends, and after the fuel is re-injected into the internal combustion engine 1, the first explosion occurs,
The motor generator 3 (torque applying means) sets the amount of torque applied to the internal combustion engine 1 to zero. In other words, when the re-explosion occurs, the motor generator 3 finishes the electric operation and switches the motor generator 3 to the power generation operation.
【００２９】再爆の検出は、内燃機関１へ燃料の再噴射
後、３回目の点火信号の発生により検出する。なお、内
燃機関１へ燃料の再噴射後、１回目と２回目の点火信号
の発生の間が吸入行程、２回目と３回目の点火信号の発
生の間が圧縮行程となり、３回目の点火信号の発生後、
爆発が起こり、内燃機関１が回転トルクを発生する。こ
のため、３回目の点火信号の発生後は、電動発電機３
（トルク付与手段）は内燃機関１へトルクを与える必要
はない。Re-explosion is detected by the third ignition signal generation after the fuel is re-injected into the internal combustion engine 1. After the fuel is re-injected into the internal combustion engine 1, the intake stroke is between the first and second ignition signals, and the compression stroke is between the second and third ignition signals. After the occurrence of
An explosion occurs and the internal combustion engine 1 produces a rotational torque. Therefore, after the third ignition signal is generated, the motor generator 3
The (torque applying means) does not need to apply torque to the internal combustion engine 1.
【００３０】制御装置６による、上記各手段の作動の一
例を図３のフローチャートを用いて説明する。最初に、
イグニッションスイッチがONされたか否かの判断を行い
（ステップＳ1 ）、この判断結果がNOの場合は終了す
る。この判断結果がYES の場合は、各センサからの信号
（車速Ｖ、回転数Ｎｅ、スロットル開度Ｔａ、冷却水の
温度Ｔｃ）を読み込む（ステップＳ2 ）。An example of the operation of each of the above means by the control device 6 will be described with reference to the flowchart of FIG. At first,
It is judged whether or not the ignition switch is turned on (step S1), and if the result of this judgment is NO, the process ends. If the result of this determination is YES, the signals (vehicle speed V, rotational speed Ne, throttle opening Ta, cooling water temperature Tc) from each sensor are read (step S2).
【００３１】続くステップＳ3 〜Ｓ6 では、燃料カット
を行う条件か否かの判断を行う。つまり、ステップＳ3
で車速Ｖが１０ｋｍ／ｈより速く、ステップＳ4 で回転
数Ｎｅが１０００ｒｐｍ）よりも高く、ステップＳ5 で
スロットル開度Ｔａが０°で、ステップＳ6 で冷却水の
温度Ｔｃが７０℃よりも高い場合（ステップＳ3〜Ｓ6
の全てがYES ）は、燃料カットを行う条件を満たすと判
断して、ステップＳ7 の燃料カット制御を行い、その後
リターンする。また、ステップＳ3 〜Ｓ6の少なくとも
１つ以上がNOの場合は、ステップＳ8 において燃料噴射
制御を行い、その後リターンする。In subsequent steps S3 to S6, it is determined whether or not the condition is for fuel cut. That is, step S3
And the vehicle speed V is faster than 10 km / h, the rotational speed Ne is higher than 1000 rpm in step S4, the throttle opening Ta is 0 ° in step S5, and the cooling water temperature Tc is higher than 70 ° C. in step S6. (Steps S3 to S6
Is YES), it is determined that the conditions for performing the fuel cut are satisfied, the fuel cut control of step S7 is performed, and then the process returns. If at least one of steps S3 to S6 is NO, fuel injection control is performed in step S8, and then the process returns.
【００３２】ステップＳ7 における燃料カット制御の詳
細制御を、図４のフローチャートを用いて説明する。ま
ず、燃料噴射手段７による内燃機関１への燃料の供給を
停止する（ステップＳ70）。次に、回転数センサ１１に
よって、回転数Ｎｅを読み込む（ステップＳ71）。読み
込んだ回転数Ｎｅが、燃料復帰回転数Ｎｅｒ（アシスト
開始回転数）より低下したか否かの判断を行う（ステッ
プＳ72）。この判断結果がNOの場合は、ステップＳ70へ
戻る。また、判断結果がYES の場合は、回転数Ｎｅを時
間微分した減速度ΔＮｅを算出する（ステップＳ73）。Detailed control of the fuel cut control in step S7 will be described with reference to the flowchart of FIG. First, the supply of fuel to the internal combustion engine 1 by the fuel injection means 7 is stopped (step S70). Next, the rotation speed Ne is read by the rotation speed sensor 11 (step S71). It is determined whether the read rotation speed Ne is lower than the fuel return rotation speed Ner (assist start rotation speed) (step S72). If the result of this determination is NO, the process returns to step S70. When the determination result is YES, the deceleration ΔNe is calculated by differentiating the rotation speed Ne with time (step S73).
【００３３】続いて、減速度ΔＮｅに応じた付与トルク
量Ｔｐを算出する（ステップＳ74）。このステップＳ74
では減速度ΔＮｅが大きい時は、車両が搭載するエアコ
ンのコンプレッサが作動しているなど、搭載する補機類
による内燃機関１の負荷が大きいと判断して減速度ΔＮ
ｅに応じた大きな付与トルク量Ｔｐを算出し、逆に減速
度ΔＮｅが小さい時は、コンプレッサが作動していない
など、搭載する補機類による内燃機関１の負荷が小さい
と判断して減速度ΔＮｅに応じた小さな付与トルク量Ｔ
ｐを算出するものである。Then, the applied torque amount Tp corresponding to the deceleration ΔNe is calculated (step S74). This step S74
When the deceleration ΔNe is large, it is determined that the load of the internal combustion engine 1 due to the auxiliary machinery installed is large, such as the compressor of the air conditioner installed in the vehicle is operating, and the deceleration ΔN
A large applied torque amount Tp corresponding to e is calculated. Conversely, when the deceleration ΔNe is small, it is determined that the load on the internal combustion engine 1 due to the auxiliary equipment such as the compressor not operating is small, and the deceleration is decreased. Small applied torque amount T according to ΔNe
p is calculated.
【００３４】付与トルク量Ｔｐの算出後、燃料噴射手段
７による内燃機関１への燃料の再噴射（ステップＳ7
5）、電動発電機３の電動作動（ステップＳ76）、点火
信号のカウント（ステップＳ77）が、ただちに実行され
る。なお、ステップＳ76による電動発電機３の電動作動
は、ステップＳ73で算出されたトルク量Ｔｐが、内燃機
関１に与えられる。After the calculation of the applied torque amount Tp, the fuel injection means 7 re-injects fuel into the internal combustion engine 1 (step S7).
5) The electric operation of the motor generator 3 (step S76) and the counting of the ignition signal (step S77) are immediately executed. In the electric operation of the motor generator 3 in step S76, the torque amount Tp calculated in step S73 is given to the internal combustion engine 1.
【００３５】そして、点火信号のカウント数Ｃが３回以
上となったか否かの判断を行い（ステップＳ78）、この
判断結果がNOの場合はステップＳ78へ戻る。また、判断
結果がYES の場合は、内燃機関１の再爆が発生したと判
断して、電動発電機３を電動作動から発電作動に切り換
え（ステップＳ79）、その後リターンする。Then, it is judged whether or not the count number C of the ignition signal has become 3 times or more (step S78). If the result of this judgment is NO, the process returns to step S78. If the determination result is YES, it is determined that the re-explosion of the internal combustion engine 1 has occurred, the motor generator 3 is switched from the electric operation to the power generation operation (step S79), and then the process returns.
【００３６】〔第１実施例の作動〕上記実施例の作動
を、本発明を適用していない例とともに、図５のタイム
チャートを用いて説明する。この作動は、減速中、燃料
カットが行われ、回転数Ｎｅが燃料復帰回転数Ｎｅｒ
（アシスト開始回転数）より低下した時（ｔ1 ）に、実
線Ａに示すように、燃料を再噴射するものである。[Operation of First Embodiment] The operation of the above embodiment will be described with reference to the time chart of FIG. 5 together with an example to which the present invention is not applied. In this operation, fuel is cut during deceleration, and the rotation speed Ne is the fuel return rotation speed Ner.
The fuel is reinjected as shown by the solid line A when the rotation speed is lower than (assist start rotation speed) (t1).
【００３７】本発明を適用していない場合、図中破線Ｂ
に示すように、燃料が再噴射されても、内燃機関１が再
爆するまで（点火信号が３回発生するｔ2 ）、内燃機関
１の回転数は低下し、再爆後に回転数が上昇することと
なり、回転数が不安定となる。When the present invention is not applied, the broken line B in the figure
As shown in, even if the fuel is re-injected, the rotation speed of the internal combustion engine 1 decreases and the rotation speed increases after the re-explosion until the internal combustion engine 1 re-explodes (t2 when the ignition signal is generated three times). As a result, the rotation speed becomes unstable.
【００３８】これに対し、上記実施例のものは、燃料が
再噴射されると、図中実線Ｃに示すように電動発電機３
を電動作動させて内燃機関１にトルク付与を行うととも
に、図中実線Ｄおよび二点鎖線Ｅに示すように電動発電
機３の作動力（トルク量）を内燃機関１の負荷に応じて
発生させるため、図中実戦Ｆに示すように、燃料が再噴
射され、内燃機関１が再爆するまでの回転数を、再爆後
の回転数に抑えることができる。このため、再爆後にお
ける回転数の変動が抑えられる。On the other hand, in the above embodiment, when the fuel is re-injected, the motor generator 3 as shown by the solid line C in the figure.
Are electrically operated to apply torque to the internal combustion engine 1, and generate an operating force (torque amount) of the motor generator 3 according to the load of the internal combustion engine 1 as shown by a solid line D and a two-dot chain line E in the figure. Therefore, as shown in the actual battle F in the figure, the number of revolutions until the internal combustion engine 1 is re-injected and the fuel is re-injected can be suppressed to the number of revolutions after the re-explosion. Therefore, the fluctuation of the rotation speed after the re-explosion is suppressed.
【００３９】〔第１実施例の効果〕本実施例の車両用内
燃機関１の制御装置は、上記の作動で示したように、燃
料カット時、内燃機関１の回転数Ｎｅが燃料復帰回転数
Ｎｅｒ（アシスト開始回転数）より低下すると、内燃機
関１が再爆して回転トルクを発生するまで、減速度ΔＮ
ｅから算出した負荷に応じたトルク量Ｔｐを内燃機関１
に与えて、内燃機関１の回転を安定化させる。つまり、
燃料が再噴射されてから内燃機関１が再爆するまでの
間、補機類などによる内燃機関１の負荷変動に関係な
く、安定化させることができる。また、負荷が小さい時
に付与するトルク量Ｔｐは小さく抑えられるため、電動
発電機３が電動作動によって消費する電気エネルギーが
低く抑えられる。つまり、最小限の電気エネルギーで内
燃機関１の回転数を安定化させることができる。[Effects of the First Embodiment] In the control device for the internal combustion engine 1 for a vehicle of the present embodiment, as shown in the above operation, at the time of fuel cut, the rotation speed Ne of the internal combustion engine 1 is the fuel return rotation speed. When the engine speed becomes lower than Ner (assist start speed), the deceleration ΔN is maintained until the internal combustion engine 1 re-explodes to generate the rotary torque.
The torque amount Tp corresponding to the load calculated from e is calculated by the internal combustion engine 1
To stabilize the rotation of the internal combustion engine 1. That is,
From the time the fuel is re-injected to the time when the internal combustion engine 1 is re-exploded, the internal combustion engine 1 can be stabilized regardless of load fluctuations of the internal combustion engine 1 due to auxiliary machinery and the like. Further, since the torque amount Tp to be applied when the load is small is suppressed to be small, the electric energy consumed by the motor generator 3 by the electric operation is suppressed to be low. That is, the rotational speed of the internal combustion engine 1 can be stabilized with the minimum electric energy.
【００４０】〔第２実施例〕図６は本発明の第２実施例
を示すタイムチャートである（各符号は第１実施例参
照）。上記の実施例では、燃料カット時、内燃機関１の
回転数Ｎｅが燃料復帰回転数Ｎｅｒ（アシスト開始回転
数）より低下してから、内燃機関１が再爆するまで、電
動発電機３が内燃機関１に付与するトルク量Ｔｐが、一
定量の例を示した。しかるに、本実施例では、電動発電
機３が内燃機関１に付与するトルク量Ｔｐは、制御装置
６によって、０から連続的に増加し、トルク付与終了時
に再び０となるように連続的に減少するように制御され
る。[Second Embodiment] FIG. 6 is a time chart showing a second embodiment of the present invention (refer to the first embodiment for each symbol). In the above-described embodiment, at the time of fuel cut, the motor generator 3 operates the internal combustion engine 1 until the internal combustion engine 1 re-explodes after the rotational speed Ne of the internal combustion engine 1 becomes lower than the fuel return rotational speed Ner (assist start rotational speed). An example in which the torque amount Tp applied to the engine 1 is a constant amount is shown. However, in the present embodiment, the torque amount Tp applied to the internal combustion engine 1 by the motor generator 3 is continuously increased from 0 by the control device 6 and continuously decreased so as to become 0 again at the end of the torque application. To be controlled.
【００４１】この制御装置６による制御は、ＲＯＭ６ｂ
には減速度ΔＮｅに応じた一定のトルク量Ｔｐが記憶さ
れているのではなく、減速度ΔＮｅに応じた付与トルク
形状が記憶されるもので、第１実施例のステップＳ74に
おいて、減速度ΔＮｅに応じた付与トルク形状が読み出
される。The control by the control device 6 is performed by the ROM 6b.
Does not store a constant torque amount Tp corresponding to the deceleration ΔNe, but stores the applied torque shape corresponding to the deceleration ΔNe. In step S74 of the first embodiment, the deceleration ΔNe is stored. The applied torque shape corresponding to is read.
【００４２】この実施例のように、電動発電機３が内燃
機関１に付与するトルク量Ｔｐを、０から連続的に増加
し、再び０となるように連続的に減少することによっ
て、電動発電機３の電動作動によるトルク付与時のトル
ク変動を低減することができる。As in this embodiment, the amount of torque Tp applied to the internal combustion engine 1 by the motor generator 3 is continuously increased from 0 and is continuously decreased so as to become 0 again. It is possible to reduce the torque fluctuation when the torque is applied by the electric operation of the machine 3.
【００４３】〔変形例〕上記実施例では、内燃機関にか
かる負荷を回転数の時間微分によって検出した例を示し
たが、車両が搭載するエアコンのコンプレッサの作動信
号から内燃機関にかかる負荷を検出するなど、補機類の
作動状態を検出することで、内燃機関にかかる負荷を検
出しても良い。[Modification] In the above embodiment, an example in which the load applied to the internal combustion engine is detected by the time derivative of the rotational speed is shown. However, the load applied to the internal combustion engine is detected from the operation signal of the compressor of the air conditioner mounted on the vehicle. Alternatively, the load applied to the internal combustion engine may be detected by detecting the operating state of the auxiliary machinery.
【００４４】上記の実施例では、電動機と発電機とを一
体に設けた電動発電機を例に示したが、電動機（例えば
スタータ）と発電機（オルタネータ）とを別体に内燃機
関に搭載しても良い。上記の実施例では、アシスト開始
回転数を燃料復帰回転数と同じ回転数とした例を示した
が、アシスト開始回転数をアイドリング回転数に設定す
るなど、シスト開始回転数を燃料復帰回転数と異なる回
転数に設定しても良い。In the above embodiments, the motor generator having the electric motor and the generator integrally provided is taken as an example, but the electric motor (for example, starter) and the generator (alternator) are separately mounted in the internal combustion engine. May be. In the above embodiment, the example in which the assist start rotation speed is the same as the fuel return rotation speed is shown, but the assist start rotation speed is set to the idling rotation speed, and the cyst start rotation speed is defined as the fuel return rotation speed. You may set to a different rotation speed.
【図１】車両用内燃機関の制御装置の概略ブロック図で
ある（第１実施例）。FIG. 1 is a schematic block diagram of a control device for a vehicle internal combustion engine (first embodiment).
【図２】車両用内燃機関の制御装置の概略構成図である
（第１実施例）。FIG. 2 is a schematic configuration diagram of a control device for an internal combustion engine for a vehicle (first embodiment).
【図３】制御装置の作動を示すフローチャートである
（第１実施例）。FIG. 3 is a flowchart showing the operation of the control device (first embodiment).
【図４】燃料カット制御の作動を示すフローチャートで
ある（第１実施例）。FIG. 4 is a flowchart showing an operation of fuel cut control (first embodiment).
【図５】作動説明のためのタイムチャートである（第１
実施例）。FIG. 5 is a time chart for explaining the operation (first
Example).
【図６】作動説明のためのタイムチャートである（第２
実施例）。FIG. 6 is a time chart for explaining the operation (second)
Example).
１ 内燃機関 ３ 電動発電機（トルク付与手段） ７ 燃料噴射手段 １１ 回転数センサ（回転数検出手段） ２１ 減速検出手段 ２２ 燃料カット手段 ２３ 内燃機関負荷検出手段 ２４ トルク量決定手段 ２５ 付与作動手段 1 Internal combustion engine 3 Motor generator (torque applying means) 7 Fuel injection means 11 Rotation speed sensor (rotation speed detection means) 21 Deceleration detection means 22 Fuel cut means 23 Internal combustion engine load detection means 24 Torque amount determining means 25 Applying actuation means
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ６０Ｌ 11/14 Ｂ６０Ｌ 11/14 Ｆ０２Ｄ 41/04 ３０１ Ｆ０２Ｄ 41/04 ３０１Ｊ 41/10 ３３０ 41/10 ３３０Ｊ ３３０Ｓ (56)参考文献 特開 平２−256843（ＪＰ，Ａ) 特開 平２−191832（ＪＰ，Ａ) 実開 昭63−183445（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F02D 29/02 - 29/06 F02D 41/00 - 41/40 B60L 11/02 - 11/14 B60K 6/02 - 6/04 Continuation of front page (51) Int.Cl. 7 Identification code FI B60L 11/14 B60L 11/14 F02D 41/04 301 301 F02D 41/04 301J 41/10 330 41/10 330J 330S (56) References 2-256843 (JP, A) JP-A-2-191832 (JP, A) Actual development Sho 63-183445 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) F02D 29/02 -29/06 F02D 41/00-41/40 B60L 11/02-11/14 B60K 6/02-6/04
Claims (5)
する内燃機関と、 （ｂ）この内燃機関へ燃料の供給を行う燃料噴射手段
と、 （ｃ）前記内燃機関の回転数を検出する回転数検出手段
と、 （ｄ）車両の減速を検出する減速検出手段と、 （ｅ）この減速検出手段が減速を検出した際、前記回転
数検出手段の検出する前記内燃機関の回転数が、あらか
じめ設定された燃料復帰回転数に低下するまで、前記燃
料噴射手段による前記内燃機関への燃料の供給停止を行
う燃料カット手段と、 （ｆ）前記内燃機関に回転トルクを付与するトルク付与
手段と、 （ｇ）前記内燃機関にかかる負荷を検出する内燃機関負
荷検出手段と、 （ｈ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記内燃機関負荷検出手段の検出する
前記内燃機関にかかる負荷に応じて、前記トルク付与手
段が前記内燃機関へ与えるトルク量を決定するトルク量
決定手段と、 （ｉ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記回転数検出手段の検出する前記内
燃機関の回転数が、あらかじめ設定されたアシスト開始
回転数より低下すると、前記トルク量決定手段で決定さ
れたトルク量を、前記トルク付与手段によって前記内燃
機関に与える付与作動手段とを備え、 前記アシスト開始回転数は、前記燃料復帰回転数と同じ
回転数であることを特徴とする 車両用内燃機関の制御装
置。1. An internal combustion engine (a) which generates rotational power by combustion of fuel, (b) a fuel injection means for supplying fuel to this internal combustion engine, and (c) a rotational speed of the internal combustion engine is detected. Rotation speed detection means, (d) deceleration detection means for detecting deceleration of the vehicle, and (e) when the deceleration detection means detects deceleration, the rotation speed of the internal combustion engine detected by the rotation speed detection means is Fuel cut means for stopping the supply of fuel to the internal combustion engine by the fuel injection means until the fuel return rotational speed is set to a preset value; and (f) torque applying means for applying rotational torque to the internal combustion engine. (G) internal combustion engine load detection means for detecting a load applied to the internal combustion engine, and (h) detection by the internal combustion engine load detection means while the supply of fuel to the internal combustion engine by the fuel cut means is stopped. Within Torque amount determining means for determining the amount of torque applied to the internal combustion engine by the torque applying means according to the load applied to the fuel engine; and (i) while the supply of fuel to the internal combustion engine by the fuel cut means is stopped, When the rotation speed of the internal combustion engine detected by the rotation speed detection means is lower than a preset assist start rotation speed, the torque amount determined by the torque amount determination means is transferred to the internal combustion engine by the torque applying means. and a grant actuating means for imparting, the assist start rotational speed is the same as the fuel return rotational speed
A control device for an internal combustion engine for a vehicle, wherein the control device is the number of revolutions .
置において、前記トルク量決定手段が決定する前記内燃機関へ与える
トルク量は、０から連続的に増加し、トルク付与終了時
に再び０となるように連続的に減少する ことを特徴とす
る車両用内燃機関の制御装置。2. The control device for an internal combustion engine for a vehicle according to claim 1, wherein the torque amount determining means applies to the internal combustion engine.
The torque amount increases continuously from 0, and when the torque application is completed
A control device for an internal combustion engine for a vehicle, wherein the control device continuously decreases so as to become zero again .
する内燃機関と、 （ｂ）この内燃機関へ燃料の供給を行う燃料噴射手段
と、 （ｃ）前記内燃機関の回転数を検出する回転数検出手段
と、 （ｄ）車両の減速を検出する減速検出手段と、 （ｅ）この減速検出手段が減速を検出した際、前記回転
数検出手段の検出する前記内燃機関の回転数が、あらか
じめ設定された燃料復帰回転数に低下するまで、前記燃
料噴射手段による前記内燃機関への燃料の供給停止を行
う燃料カット手段と、 （ｆ）前記内燃機関に回転トルクを付与するトルク付与
手段と、 （ｇ）前記内燃機関にかかる負荷を検出する内燃機関負
荷検出手段と、 （ｈ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記内燃機関負荷検出手段の検出する
前記内燃機関にかかる負荷に応じて、前記トルク付与手
段が前記内燃機関へ与えるトルク量を決定するトルク量
決定手段と、 （ｉ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記回転数検出手段の検出する前記内
燃機関の回転数が、あらかじめ設定されたアシスト開始
回転数より低下すると、前記トルク量決定手段で決定さ
れたトルク量を、前記トルク付与手段によって前記内燃
機関に与える付与作動手段とを備え、 前記トルク量決定手段が決定する前記内燃機関へ与える
トルク量は、０から連続的に増加し、トルク付与終了時
に再び０となるように連続的に減少することを特徴とす
る車両用内燃機関の制御装置。3. (a) Generation of rotational power by combustion of fuel
Internal combustion engine, and (b) fuel injection means for supplying fuel to this internal combustion engine
And (c) rotation speed detection means for detecting the rotation speed of the internal combustion engine
If, (d) and the deceleration detecting means for detecting a deceleration of the vehicle, (e) when the deceleration detecting means detects a deceleration, the rotation
The number of revolutions of the internal combustion engine detected by the number detecting means is
The fuel is returned to the preset fuel return speed until
The fuel injection means stops the supply of fuel to the internal combustion engine.
Fuel cutting means, and (f) torque application for applying rotational torque to the internal combustion engine.
And (g) an internal combustion engine negative for detecting a load applied to the internal combustion engine.
Load detection means, and (h) fuel to the internal combustion engine by the fuel cut means
Detection by the internal combustion engine load detection means during the suspension of supply of
Depending on the load applied to the internal combustion engine, the torque application
Amount of torque that determines the amount of torque that the stage gives to the internal combustion engine
Determining means, and (i) fuel to the internal combustion engine by the fuel cutting means
When the supply of the
Assistance preset for the number of revolutions of the fuel engine
When the speed falls below the rotational speed, it is determined by the torque amount determining means.
The generated torque amount by the torque applying means to the internal combustion engine.
The torque amount to be given to the internal combustion engine, which is determined by the torque amount determining means, continuously increases from 0 and continuously decreases to 0 again at the end of torque application. A control device for an internal combustion engine for a vehicle, comprising:
の車両用内燃機関の制御装置において、 前記燃料カット手段による前記内燃機関への燃料の供給
停止が終わり、前記内燃機関への燃料の再噴射後、最初
の爆発が発生した後に、 前記トルク量決定手段は、前記内燃機関へ与えるトルク
量を０とすることを特徴とする車両用内燃機関の制御装
置。4. The control device for an internal combustion engine for a vehicle according to any one of claims 1 to 3, wherein the supply of fuel to the internal combustion engine is stopped by the fuel cut means, and the fuel to the internal combustion engine is terminated. After the first explosion occurs after the re-injection, the torque amount determining means sets the torque amount applied to the internal combustion engine to 0, the control device for the internal combustion engine for a vehicle.
する内燃機関と、 （ｂ）この内燃機関へ燃料の供給を行う燃料噴射手段
と、 （ｃ）前記内燃機関の回転数を検出する回転数検出手段
と、 （ｄ）車両の減速を検出する減速検出手段と、 （ｅ）この減速検出手段が減速を検出した際、前記回転
数検出手段の検出する前記内燃機関の回転数が、あらか
じめ設定された燃料復帰回転数に低下するまで、前記燃
料噴射手段による前記内燃機関への燃料の供給停止を行
う燃料カット手段と、 （ｆ）前記内燃機関に回転トルクを付与するトルク付与
手段と、 （ｇ）前記内燃機関にかかる負荷を検出する内燃機関負
荷検出手段と、 （ｈ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記内燃機関負荷検出手段の検出する
前記内燃機関にかかる負荷に応じて、前記トルク付与手
段が前記内燃機関へ与えるトルク量を決定するトルク量
決定手段と、 （ｉ）前記燃料カット手段による前記内燃機関への燃料
の供給停止中に、前記回転数検出手段の検出する前記内
燃機関の回転数が、あらかじめ設定されたアシスト開始
回転数より低下すると、前記トルク量決定手段で決定さ
れたトルク量を、前記トルク付与手段によって前記内燃
機関に与える付与作動手段とを備え、 前記燃料カット手段による前記内燃機関への燃料の供給
停止が終わり、前記内燃機関への燃料の再噴射後、最初
の爆発が発生した後に、 前記トルク量決定手段は、前記内燃機関へ与えるトルク
量を０とする ことを特徴とする車両用内燃機関の制御装
置。5. (a) Generation of rotational power by combustion of fuel
Internal combustion engine, and (b) fuel injection means for supplying fuel to this internal combustion engine
And (c) rotation speed detection means for detecting the rotation speed of the internal combustion engine
If, (d) and the deceleration detecting means for detecting a deceleration of the vehicle, (e) when the deceleration detecting means detects a deceleration, the rotation
The number of revolutions of the internal combustion engine detected by the number detecting means is
The fuel is returned to the preset fuel return speed until
The fuel injection means stops the supply of fuel to the internal combustion engine.
Fuel cutting means, and (f) torque application for applying rotational torque to the internal combustion engine.
And (g) an internal combustion engine negative for detecting a load applied to the internal combustion engine.
Load detection means, and (h) fuel to the internal combustion engine by the fuel cut means
Detection by the internal combustion engine load detection means during the suspension of supply of
Depending on the load applied to the internal combustion engine, the torque application
Amount of torque that determines the amount of torque that the stage gives to the internal combustion engine
Determining means, and (i) fuel to the internal combustion engine by the fuel cutting means
When the supply of the
Assistance preset for the number of revolutions of the fuel engine
When the speed falls below the rotational speed, it is determined by the torque amount determining means.
The generated torque amount by the torque applying means to the internal combustion engine.
Supply means for giving the engine, and supply of fuel to the internal combustion engine by the fuel cut means.
After stopping, after reinjecting fuel into the internal combustion engine, first
Is generated, the torque amount determining means determines the torque applied to the internal combustion engine.
A control device for an internal combustion engine for a vehicle , wherein the amount is set to 0 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18033895A JP3371625B2 (en) | 1995-07-17 | 1995-07-17 | Control device for internal combustion engine for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18033895A JP3371625B2 (en) | 1995-07-17 | 1995-07-17 | Control device for internal combustion engine for vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0932601A JPH0932601A (en) | 1997-02-04 |
| JP3371625B2 true JP3371625B2 (en) | 2003-01-27 |
Family
ID=16081482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18033895A Expired - Fee Related JP3371625B2 (en) | 1995-07-17 | 1995-07-17 | Control device for internal combustion engine for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3371625B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10339186A (en) * | 1997-06-04 | 1998-12-22 | Nissan Motor Co Ltd | Controller of composite driving system of vehicle |
| JP3540214B2 (en) * | 1999-09-17 | 2004-07-07 | 本田技研工業株式会社 | Output control device for hybrid vehicle |
| JP3542941B2 (en) * | 1999-12-20 | 2004-07-14 | 本田技研工業株式会社 | Engine stall prevention control device for hybrid vehicle |
| DE60213144T2 (en) | 2001-01-26 | 2007-07-12 | Denso Corp., Kariya | Engine control unit |
| JP3772683B2 (en) * | 2001-03-21 | 2006-05-10 | スズキ株式会社 | Control device for hybrid vehicle |
| JP2008094238A (en) * | 2006-10-11 | 2008-04-24 | Nissan Motor Co Ltd | Controller for hybrid car |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0612232Y2 (en) * | 1987-05-19 | 1994-03-30 | マツダ株式会社 | Engine fuel supply |
| JPH02191832A (en) * | 1989-01-19 | 1990-07-27 | Mitsubishi Motors Corp | Load control device for equipment with internal combustion engine |
| JPH02256843A (en) * | 1989-03-28 | 1990-10-17 | Mazda Motor Corp | Engine deceleration control device |
-
1995
- 1995-07-17 JP JP18033895A patent/JP3371625B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0932601A (en) | 1997-02-04 |
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