JPS5925070A - Improving method of starting property for internal- combustion engine - Google Patents
Improving method of starting property for internal- combustion engineInfo
- Publication number
- JPS5925070A JPS5925070A JP57134233A JP13423382A JPS5925070A JP S5925070 A JPS5925070 A JP S5925070A JP 57134233 A JP57134233 A JP 57134233A JP 13423382 A JP13423382 A JP 13423382A JP S5925070 A JPS5925070 A JP S5925070A
- Authority
- JP
- Japan
- Prior art keywords
- engine
- intake
- suction
- air
- control valve
- 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.)
- Pending
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000000446 fuel Substances 0.000 abstract description 12
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000000994 depressogenic effect Effects 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/13—Combustion air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
- Y02T10/12—Improving ICE efficiencies
Abstract
Description
【発明の詳細な説明】
本発明は、内燃機関の起動性改善方法に係り、特にディ
ーゼル機関の起動性改善方法に係る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for improving startability of an internal combustion engine, and particularly to a method for improving startability of a diesel engine.
ディーゼル機関に於ては、冷間時の起動時には吸気圧縮
だけでは吸入空気温度が燃料を自己発火する温度にまで
上昇しないことがあり、このため多くのディーゼル機関
に於Ｃは、グロープラグが設けられ、これによって機関
燃使室内の燃料を加熱してこれの気化を促進し、機関起
動性を改善することが図られている。When starting a diesel engine when it is cold, the intake air temperature may not rise to a temperature that will cause the fuel to self-ignite due to intake air compression alone, and for this reason, many diesel engines are equipped with glow plugs. This heats the fuel in the engine combustion chamber to promote its vaporization and improve engine startability.
しかし、機関の起動に際し、燃焼室に噴射された燃料が
グロープラグにより加熱されても機関起動性がさほど改
善されず、かなり大きい発熱量を有するグロープラグが
用いられないと起動性の改善が良好になされない。However, when starting the engine, even if the fuel injected into the combustion chamber is heated by the glow plug, the engine startability is not significantly improved, and the improvement in startability is only good if a glow plug with a considerably large calorific value is not used. Not done.
本発明は機関起動時に機関が吸入する空気を加熱して内
燃機関の起動性の改善を行う内燃１関の起動性改善方法
を提供することを目的としている。An object of the present invention is to provide a method for improving the startability of an internal combustion engine, which improves the startability of an internal combustion engine by heating air taken into the engine when the engine starts.
かかる目的は１本発明によれば、吸気通路の途中にアク
セルペダルの踏込み量に応じて開弁する吸気制御弁を設
けると共に前記吸気制御弁より下流側に吸気加熱用ヒー
タを設け、機関の起動に先立って前記吸気制御弁を発熱
させて前記吸気制御弁より下流側の吸気通路内の空気を
加熱し、機関の起動時にこの加熱された空気を機関燃焼
室へ供給して機関の起動性を改善することを特徴とする
内燃機関の起動性改善方法によって達成される。According to the present invention, an intake control valve that opens depending on the amount of depression of the accelerator pedal is provided in the middle of the intake passage, and a heater for heating the intake air is provided downstream of the intake control valve, so that the engine can be started. Prior to this, the intake control valve generates heat to heat the air in the intake passage downstream of the intake control valve, and when the engine starts, this heated air is supplied to the engine combustion chamber to improve engine startability. This is achieved by a method for improving startability of an internal combustion engine.
機関の起動前は、通常、アクセルペダルの踏込みが行わ
れないので、吸気制御弁は閉じ位置にあり、この時に吸
気加熱用ヒータが発熱することにより吸気制御弁と機関
の吸気弁との間の吸気通路に滞留している空気が加熱さ
れ、そして機関の起動に際して吸気弁が開くことにより
この加熱された空気がｌ！ｌ関燃焼室内に入り、ディー
ゼル機関に於てはこの加熱された空気を吸入した機関燃
焼室内に燃料が噴射されることにより機関の起動が良好
に行われる。Before starting the engine, the accelerator pedal is usually not depressed, so the intake control valve is in the closed position, and at this time, the intake air heater generates heat, which causes a gap between the intake control valve and the engine's intake valve. The air remaining in the intake passage is heated, and when the engine is started, the intake valve opens, and this heated air reaches l! In a diesel engine, fuel is injected into the combustion chamber of the engine which takes in the heated air, thereby allowing the engine to start smoothly.
吸気加熱用ヒータは電気式のものであって良く、これに
対する通電開始は機関の起動に先立って行われる必要が
あり、これはエンジンキーが閉じられたこと、車輌用内
燃機関に於ては運転席のドアキーが解錠されたこと或い
は運転席に設けられたシートスイッチによって運転者が
運転席に着座したことが検出されたこと等に基き行われ
れば良い。The heater for heating the intake air may be an electric type, and it is necessary to start energizing it before starting the engine. This may be performed based on the fact that the door key of the seat is unlocked or that the seat switch provided on the driver's seat detects that the driver is seated in the driver's seat.
以下に添付の図を参照して本発明を実施例について詳細
に説明する。The invention will now be described in detail by way of example embodiments with reference to the accompanying drawings.
第１図は本発明による起動性改善方法の実施に使用する
起動性改善装置が組み込まれたディーゼル機関の一つの
実施例を示す概略構成図である。FIG. 1 is a schematic diagram showing one embodiment of a diesel engine incorporating a startability improving device used to implement the startability improving method according to the present invention.
第１図に於て、１はディーげル機関を示しており、該デ
ィーゼル機関１は図には示されていないが複数個の気筒
、即ち燃焼室を有しており、該燃焼室は各々吸気弁によ
り開閉される吸気ボートより空気を吸入し、また燃料噴
射弁より液体燃料を噴射供給されるようになっている。In FIG. 1, reference numeral 1 indicates a Diegel engine. Although not shown in the figure, the diesel engine 1 has a plurality of cylinders, that is, combustion chambers, each of which has a plurality of cylinders or combustion chambers. Air is taken in from an intake boat that is opened and closed by an intake valve, and liquid fuel is injected and supplied from a fuel injection valve.
ディーゼル機関１の一例部には吸気マニホールド２が取
付けられている。吸気マニホールド２はその複数、個の
枝管部３にて前記吸気ボートの各々に連通している。An intake manifold 2 is attached to an example part of the diesel engine 1. The intake manifold 2 communicates with each of the intake boats through a plurality of branch pipe portions 3 thereof.
吸気マニホールド２の集合管部４には一本の吸気管５が
連通接続されており、この吸気管５の集合管部４に対す
る接続端近くには吸気制御弁６が設けられている。吸気
１１Ｊ ａｌｌ弁６は弁軸７に担持され、図示されてい
ないアクセル系に駆動連結され、アクセルペダルの踏込
みに応じて開弁するようなっている。吸気制御弁６には
、この実施例の場合、切欠部８が設けられており、これ
によって吸気制御弁６がその全開位置にある時もディー
ゼル機関１は比較的小さい所定流量の空気を吸入し得る
ようになっている。A single intake pipe 5 is connected to the collecting pipe section 4 of the intake manifold 2, and an intake control valve 6 is provided near the connecting end of the intake pipe 5 to the collecting pipe section 4. The intake 11J all valve 6 is supported on a valve shaft 7, is drivingly connected to an accelerator system (not shown), and opens in response to depression of the accelerator pedal. In this embodiment, the intake control valve 6 is provided with a notch 8, which allows the diesel engine 1 to take in a relatively small predetermined flow rate of air even when the intake control valve 6 is in its fully open position. I'm starting to get it.
吸気マニホールド２の枝管部３の各々には吸気加熱用ヒ
ータ９が設けられている。この吸気加熱用ヒータ９はＰ
ＴＣヒータ、セラミックスヒータの如き半導体ヒータ或
いはニクロム線ヒータ等の電気式ヒータにより構成され
、バッテリ電源１０よりリレースイッチ１１を経て電流
を選択的に供給されるようになっている。Each branch pipe portion 3 of the intake manifold 2 is provided with an intake air heating heater 9 . This intake air heating heater 9 is P
It is composed of an electric heater such as a semiconductor heater such as a TC heater or a ceramic heater, or a nichrome wire heater, and is selectively supplied with current from a battery power source 10 via a relay switch 11.
リレースイッチ１１の開閉制御は制御装置１２により行
われ、該制御装置１２はキーホールにエンジンキーが差
込まれたことがエンジンキースイッチ１３により検出さ
れた時リレースイッチ１１を閉じ、ディーゼル機関１の
スタータが作動したことがスタータスイッチ１４により
検出されたとき或いはそれより所定時間が経過した後に
リレースイッチ１１を開くようになっている。Opening/closing control of the relay switch 11 is performed by a control device 12. When the engine key switch 13 detects that the engine key is inserted into the keyhole, the control device 12 closes the relay switch 11 and starts the diesel engine 1. The relay switch 11 is opened when the starter switch 14 detects that the starter has operated or after a predetermined period of time has elapsed.
ディーゼル劃１の起動に先立ってエンジンキーがキーホ
ールに差込まれると、リレースイッチ１１が閉じること
により吸気加熱用ヒータ９に通電が行われ、これが発熱
する。この時には通常、５−
アクセルペダルが踏込まれていないので、吸気制御弁６
は全閉位置にあり、このため吸気制御弁９とディーゼル
機関１の吸気弁との間に実質的に閉じられた吸気通路空
間が郭定され、この空間内の空気が吸気加熱用ヒータ９
により効率良く加熱される。そしてその後にスタータが
作動してディーゼル機関１の起動が行われると、吸気弁
の開弁に伴い前記空間内にて加熱された空気が機関燃焼
室内に入り、この加熱された空気を含む機関燃焼室内に
燃料噴射弁より液体燃料が噴射されることにより、その
燃料の着火が良好に行われ、ディーゼル機ｐＡ１の起動
が迅速且円滑に行われる。尚、スターの作動に伴いアク
セルペダルが踏込まれても良いが、吸気制御弁６は切欠
部８を有しているので、この時アクセルペダルが踏込ま
れなくても切欠部８を経て空気が流れることによりディ
ーゼル劃１の起動が行われる。When the engine key is inserted into the keyhole prior to starting the diesel engine 1, the relay switch 11 closes to energize the intake air heating heater 9, which generates heat. At this time, the 5-accelerator pedal is usually not depressed, so the intake control valve 6
is in the fully closed position, so that a substantially closed intake passage space is defined between the intake control valve 9 and the intake valve of the diesel engine 1, and the air in this space is transferred to the intake air heating heater 9.
It is heated more efficiently. Then, when the starter operates to start the diesel engine 1, the air heated in the space as the intake valve opens enters the engine combustion chamber, and the engine combustion containing this heated air By injecting liquid fuel into the room from the fuel injection valve, the fuel is ignited well, and the diesel engine pA1 is started quickly and smoothly. Note that the accelerator pedal may be depressed when the star is activated, but since the intake control valve 6 has a notch 8, air will flow through the notch 8 even if the accelerator pedal is not depressed at this time. As a result, the diesel engine 1 is started.
第２図は本発明による起動性改善方法を実施する装置が
組込まれたディーゼル機関の他の一つの実施例を示して
いる。かかる実施例に於ては、吸−〇−
気マニホールド２の集合管部４に吸気加熱用ヒータ１５
を有する吸気管１６が接続され、この吸気管１６に吸気
制御弁６を有する吸気管５が接続されている。吸気加熱
用ヒータ１５には上述した実施例と同様にバッテリ電源
１１よりリレースイッチ１１を経て選択的に電流が供給
されるようになっており、またリレースイッチ１１の開
閉は上述した実施例と同様に作用する制御装置１２によ
って制御されるようになっている。FIG. 2 shows another embodiment of a diesel engine incorporating a device for implementing the method for improving startability according to the present invention. In this embodiment, an intake air heating heater 15 is installed in the collecting pipe section 4 of the intake manifold 2.
An intake pipe 16 having an intake control valve 6 is connected to the intake pipe 16 . The intake air heating heater 15 is selectively supplied with current from the battery power supply 11 via the relay switch 11 as in the above-described embodiment, and the opening and closing of the relay switch 11 is the same as in the above-described embodiment. It is designed to be controlled by a control device 12 acting on the control device 12.
従ってこの実施例に於てもディーゼル機関１の起動に先
立って吸気加熱用ヒータ１５が発熱し、吸気制御弁６と
ディーゼル機関１の吸気弁との間に構成される閉じられ
た吸気通路空間の空気が加熱され、上述した実施例と同
様の効果が得られる。Therefore, in this embodiment as well, the intake air heating heater 15 generates heat prior to starting the diesel engine 1, and the closed intake passage space formed between the intake control valve 6 and the intake valve of the diesel engine 1 is heated. The air is heated and the same effect as in the embodiment described above is obtained.
尚、上述した何れの実施例に於ても吸気加熱用ヒータに
対する通電開始はエンジンキーがキーホールに差込まれ
ることにより行われるようになっているが、これは機関
の起動に先立って行われれば良く、自動車等に於ては運
転席のドアキーが開かれたこと或いは運転席に運転者が
着座したことを検出してこれに基き行われても良い。Incidentally, in any of the embodiments described above, power supply to the intake air heating heater is started by inserting the engine key into the keyhole, but this is not done before starting the engine. In a car or the like, the detection may be performed based on detecting that the door key of the driver's seat is opened or that the driver is seated in the driver's seat.
以上に於Ｃは、本発明を特定の実施例について詳細に説
明したが、本発明はこれに限定されるものではなく、本
発明の範囲内にて種々の実施例が可能であることは当業
者にとって明らかであろう。Although the present invention has been described in detail above with reference to specific embodiments, it is understood that the present invention is not limited thereto and that various embodiments are possible within the scope of the present invention. This will be obvious to businesses.
第１図及び第２図は各々本発明による起動性改善方法の
実施に使用する始動性改善装置か組込まれたディーゼル
機関の実施例を示す概略構成図である。
１・・・ディーゼル機関、２・・・吸気マニホールド。
３・・・枝管部、４・・・集合管部、５・・・吸気管、
６・・・吸気制御弁、７・・・弁軸、８・・・切欠部、
９・・・吸気加熱用ヒータ、１０・・・バッテリ電源、
１１・・・リレースイッチ、１２・・・−制御装置、１
３・・・エンジンキースイッチ、１４・・・スタータス
イッチ、１５・・・吸気加熱用ヒータ、１６・・・吸気
管FIGS. 1 and 2 are schematic diagrams each showing an embodiment of a diesel engine incorporating a startability improving device used to implement the startability improving method according to the present invention. 1...Diesel engine, 2...Intake manifold. 3... Branch pipe section, 4... Collecting pipe section, 5... Intake pipe,
6... Intake control valve, 7... Valve shaft, 8... Notch,
9... Heater for heating intake air, 10... Battery power supply,
11...Relay switch, 12...-control device, 1
3... Engine key switch, 14... Starter switch, 15... Intake air heating heater, 16... Intake pipe
Claims (1)
する吸気制御弁を設けると共に前記吸気制御弁より下流
側に吸気加熱用ヒータを設け、機関の起動に先立って前
記吸気加熱用ヒータを発熱させて吸気制御弁より下流側
の吸気通路内の空気を加熱し、機関の起動時にこの加熱
された空気をｍ間燃焼室へ供給して機関の起動性を改善
することを特徴とする内燃機関の起動性改善方法。An intake control valve that opens in response to depression of an accelerator pedal is provided in the middle of the intake passage, and an intake air heating heater is provided downstream of the intake control valve, and the intake air heating heater generates heat prior to starting the engine. The internal combustion engine is characterized in that the air in the intake passage on the downstream side of the intake control valve is heated, and when the engine is started, the heated air is supplied to the combustion chamber for a period of m to improve the startability of the engine. How to improve startup performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57134233A JPS5925070A (en) | 1982-07-30 | 1982-07-30 | Improving method of starting property for internal- combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57134233A JPS5925070A (en) | 1982-07-30 | 1982-07-30 | Improving method of starting property for internal- combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5925070A true JPS5925070A (en) | 1984-02-08 |
Family
ID=15123534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57134233A Pending JPS5925070A (en) | 1982-07-30 | 1982-07-30 | Improving method of starting property for internal- combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5925070A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61136166U (en) * | 1985-02-13 | 1986-08-25 |
-
1982
- 1982-07-30 JP JP57134233A patent/JPS5925070A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61136166U (en) * | 1985-02-13 | 1986-08-25 |
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