JPS61255260A - Intake apparatus of engine - Google Patents

Intake apparatus of engine

Info

Publication number
JPS61255260A
JPS61255260A JP60096121A JP9612185A JPS61255260A JP S61255260 A JPS61255260 A JP S61255260A JP 60096121 A JP60096121 A JP 60096121A JP 9612185 A JP9612185 A JP 9612185A JP S61255260 A JPS61255260 A JP S61255260A
Authority
JP
Japan
Prior art keywords
intake
engine
pipe
chamber
upstream
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
Application number
JP60096121A
Other languages
Japanese (ja)
Other versions
JP2562288B2 (en
Inventor
Shinichi Watanabe
伸一 渡辺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP60096121A priority Critical patent/JP2562288B2/en
Publication of JPS61255260A publication Critical patent/JPS61255260A/en
Application granted granted Critical
Publication of JP2562288B2 publication Critical patent/JP2562288B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/1015—Air intakes; Induction systems characterised by the engine type
    • F02M35/10196—Carburetted engines
    • 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
    • F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
    • F02B27/005—Oscillating pipes with charging achieved by arrangement, dimensions or shapes of intakes pipes or chambers; Ram air pipes
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10242—Devices or means connected to or integrated into air intakes; Air intakes combined with other engine or vehicle parts
    • F02M35/10295—Damping means, e.g. tranquillising chamber to dampen air oscillations
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
    • F02M35/162—Motorcycles; All-terrain vehicles, e.g. quads, snowmobiles; Small vehicles, e.g. forklifts
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Characterised By The Charging Evacuation (AREA)

Abstract

PURPOSE:To improve the response characteristic of an engine by installing an intake chamber on the upstream side of an intake pipe in straight-line form which is connected to the suction side of a throttle valve and installing an air cleaner on the upstream side. CONSTITUTION:As for an intake chamber 11, the air part is directly set to the upstream-side opened port of an intake pipe 9, and said intake pipe 9 is formed into nearly straight-line form, free from a large bent part. Though, when an engine 5 is operated, intake flows in the intermittent flow form in the intake pipes 9 and 10 in each intake cycle, the succeeding intake is temporarily stored, since the inside of the intake chamber 11 immediately after the completion of intake cycle forms a negative pressure state. The stored intake is attracted immediately into a carburetor 6 preceding the intake supplied from an air cleaner 7, in the next intake cycle, and supplied into the engine 5.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明はエンジンの吸気装置に関するものである。[Detailed description of the invention] [Technical field of invention] The present invention relates to an intake system for an engine.

〔従来技術〕[Prior art]

ｆｉｆｆｉに、車両に搭載されたエンジンの吸気装置は
、混合気を形成するための気化器と、その上流側に設け
た空気清浄器からなり、これらの間が吸気管によ、って
接続された構成になっている。ところが、」−記吸気管
は他の機器とのレイアウトの関係で長くしたり、細くし
たり、或いば途中で屈曲させたりしなければならないこ
とがある。しかし、このような形状の吸気管では、吸気
が空気清浄器から気化器へ至るまでの通気抵抗が大とな
り、絞り弁を操作するときのエンジンの応答特性（レス
ポンス）を悪くしてしまう問題がある。The intake system of the engine installed in a vehicle consists of a carburetor for forming an air-fuel mixture and an air purifier installed upstream of the carburetor, and these are connected by an intake pipe. The structure is as follows. However, the intake pipe may have to be made longer, thinner, or bent in the middle due to the layout with other equipment. However, with this type of shaped intake pipe, there is a problem in that the ventilation resistance of the intake air from the air purifier to the carburetor is large, which worsens the response characteristics of the engine when operating the throttle valve. be.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、上述のような問題を解消し、エンジン
の応答特性を向上するようにした吸気装置を提供するこ
とにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an intake system that solves the above-mentioned problems and improves engine response characteristics.

〔発明の構成〕[Structure of the invention]

上記目的を達成する本発明の吸気装置は、絞り弁の吸気
側に実質的に直線状の吸気管を接続し、この吸気管の上
流側開口に空間部を直接臨ませた吸気チャンバを設け、
さらにこの吸気チャンバの上流側に空気清浄器を設けた
ことを特徴とするものである。The intake device of the present invention which achieves the above object includes a substantially straight intake pipe connected to the intake side of the throttle valve, an intake chamber having a space directly facing the upstream opening of the intake pipe,
Furthermore, it is characterized in that an air purifier is provided upstream of the intake chamber.

〔実施例〕〔Example〕

以下、本発明を図に示す実施例により説明する。 Hereinafter, the present invention will be explained with reference to embodiments shown in the drawings.

第２図は本発明による吸気装置を設けた前１輪、後２輪
の自動三輪車であって、■は車体フレーム、２は前輪、
３は左右に一対設けられた後輪、４はシートである。５
は車体フレーム１のはパ中夫に搭載された２ザイクル・
エンジンで、その吸気装置として気化器６、空気清浄器
７が設けられている。−１ユ記空気清浄器７は、シート
４の前方にカバーに覆われて設置され、そのため吸気ｉ
ＪＴ回路が第１図に示すようなフック状に屈折した形状
になっている。また、燃料タンク８は、シート４の後部
下方に設置されている。FIG. 2 shows a three-wheeled motor vehicle with one front wheel and two rear wheels equipped with an air intake device according to the present invention, where ■ is the body frame, 2 is the front wheel,
3 is a pair of rear wheels provided on the left and right, and 4 is a seat. 5
The car body frame 1 is the 2 cycle mounted on the pachuan.
The engine is provided with a carburetor 6 and an air purifier 7 as its intake device. -1 The air purifier 7 is installed in front of the seat 4 covered with a cover, so that the air
The JT circuit is bent into a hook shape as shown in FIG. Further, the fuel tank 8 is installed below the rear of the seat 4.

第１図に詳細を示すように、図示しない絞り弁を有する
気化器６の吸気側には、実質的に直線状に形成された短
管からなる吸気管９が後方へ延びるように接続され、そ
の上流側に吸気チャンバ１１が設けられている。この吸
気チャンバ１１は、その容積の大きな空間部を吸気管９
の上流側開口に直接しｎませるように設置されている。As shown in detail in FIG. 1, an intake pipe 9 consisting of a short pipe formed in a substantially straight line is connected to the intake side of the carburetor 6 having a throttle valve (not shown) so as to extend rearward. An intake chamber 11 is provided on the upstream side thereof. This intake chamber 11 has a large volume space that is connected to the intake pipe 9.
It is installed so as to be directly connected to the upstream opening of the.

さらに、この吸気チャンバ１１から斜め上方へ延びる別
の吸気管１０が接続され、上方の空気清浄器７に連通し
ている。」−起上流側の吸気管１０ば、下流側の吸気管
９に対し、吸気チャンバ１１を介してフック状に屈折し
た状態に接続されている。Furthermore, another intake pipe 10 extending diagonally upward from this intake chamber 11 is connected to communicate with the air cleaner 7 above. - The intake pipe 10 on the upstream side is connected to the intake pipe 9 on the downstream side via an intake chamber 11 in a hook-shaped bent state.

Ｊ二１ｆＩｃしたエンジン５を運転すると、吸気管９゜
】０には吸気行程ごとに吸気が間欠流となって流れるが
、吸気行程終了直後の吸気チャンバ１１内は負圧状態に
なっているため、後続する吸気がその吸気チャンバ１】
に一時的に貯溜された状態になる。この貯溜された吸気
は、次の吸気行程のとき、空気清浄器７から供給される
吸気に先立って直ちに気化器６へ吸引され、エンジン５
へ供給される。When the engine 5 with J21fIc is operated, intake air flows intermittently into the intake pipe 9°]0 every intake stroke, but the pressure inside the intake chamber 11 is in a negative pressure state immediately after the end of the intake stroke. , the subsequent intake is in that intake chamber 1]
is temporarily stored. This stored intake air is immediately sucked into the carburetor 6 before the intake air supplied from the air cleaner 7 during the next intake stroke, and the engine 5
supplied to

しかも、」１記吸気チャンバ１１ば、枝管などの連通管
を介して吸気管９に接続されるのではなく、その空間部
を吸気管９の上流側開口に直接臨ませるようにし、かつ
吸気管９は大きな屈曲をもたず、はパ直線状に形成さて
いるため、」二連のように空間部に一時的に貯溜された
吸気は、大きな抵抗を受けることなく直ちに絞り弁を内
設する気化器６およびエンジン５へ導入される。したが
って、絞り弁の開閉操作に対し、エンジン５を極めて速
い応答特性で運転することができる。Moreover, the intake chamber 11 is not connected to the intake pipe 9 through a communication pipe such as a branch pipe, but has its space directly facing the upstream opening of the intake pipe 9, and Since the pipe 9 does not have a large bend and is formed into a straight line, the intake air temporarily stored in the space like the "double" can be immediately installed inside the throttle valve without encountering large resistance. The fuel is introduced into the carburetor 6 and engine 5. Therefore, the engine 5 can be operated with extremely fast response characteristics to opening and closing operations of the throttle valve.

また、」二連した実施例のように、空気清浄器７をシー
ト４の前方に配置するようにした吸気装置では、吸気管
１０，９が互いに接続する大きな屈折部分において大き
な吸気抵抗を発生することになるが、上述のように吸気
チャンバ１１を上記屈折部分に配置することによって、
大きな吸気抵抗の発生を抑制し、エンジン５の応答特性
を最も効果的に向上することができる。In addition, in an intake system in which the air purifier 7 is disposed in front of the seat 4, as in the dual embodiment, a large intake resistance is generated at the large bent portion where the intake pipes 10 and 9 connect to each other. However, by arranging the intake chamber 11 at the bent portion as described above,
The occurrence of large intake resistance can be suppressed, and the response characteristics of the engine 5 can be most effectively improved.

〔発明の効果〕〔Effect of the invention〕

上述したように本発明の吸気装置は、絞り弁の吸気側に
実質的に直線状の吸気管を接続し、この吸気管の上流側
開口に空間部を直接臨ませた吸気チャンバを設け、さら
にこの吸気チャンバの上流側に空気清浄器を設ける構成
にしたので、上記吸気ヂャンハに一時的に貯溜された吸
気を、次の吸気行程において、大きな吸気抵抗を受ける
ことなく直ちに絞り弁およびエンジンへ供給することが
でき、それによってエンジンの応答特性を向上すること
ができる。As described above, the intake device of the present invention connects a substantially straight intake pipe to the intake side of the throttle valve, provides an intake chamber with a space directly facing the upstream opening of the intake pipe, and further comprises: Since the air purifier is installed upstream of this intake chamber, the intake air temporarily stored in the intake chamber is immediately supplied to the throttle valve and the engine during the next intake stroke without experiencing large intake resistance. The response characteristics of the engine can thereby be improved.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の実施例による吸気装置とエンジンを一
部断面にして示す側面図、第２図は第１図の吸気装置を
有するエンジンを搭載した自動三輪車の側面図である。 ５−エンジン、　６−　（絞り弁を内股する）気化器、
　７−空気清浄器、　９．１０−吸気管、　　１１−吸
気チャンハ。FIG. 1 is a partially sectional side view showing an intake system and engine according to an embodiment of the present invention, and FIG. 2 is a side view of a tricycle equipped with an engine having the intake system shown in FIG. 5-Engine, 6-Carburetor (with throttle valve inside),
7-Air purifier, 9.10-Intake pipe, 11-Intake changha.

Claims (1)

【特許請求の範囲】[Claims] 絞り弁の吸気側に実質的に直線状の吸気管を接続し、こ
の吸気管の上流側開口に空間部を直接臨ませた吸気チャ
ンバを設け、さらにこの吸気チャンバの上流側に空気清
浄器を設けたことを特徴とするエンジンの吸気装置。A substantially straight intake pipe is connected to the intake side of the throttle valve, an intake chamber with a space directly facing the upstream opening of the intake pipe is provided, and an air purifier is further provided on the upstream side of the intake chamber. An engine intake device characterized by being provided with.
JP60096121A 1985-05-08 1985-05-08 Saddle type vehicle Expired - Fee Related JP2562288B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60096121A JP2562288B2 (en) 1985-05-08 1985-05-08 Saddle type vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60096121A JP2562288B2 (en) 1985-05-08 1985-05-08 Saddle type vehicle

Publications (2)

Publication Number Publication Date
JPS61255260A true JPS61255260A (en) 1986-11-12
JP2562288B2 JP2562288B2 (en) 1996-12-11

Family

ID=14156546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60096121A Expired - Fee Related JP2562288B2 (en) 1985-05-08 1985-05-08 Saddle type vehicle

Country Status (1)

Country Link
JP (1) JP2562288B2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123763U (en) * 1974-08-07 1976-02-21
JPS56110551A (en) * 1980-02-07 1981-09-01 Suzuki Motor Co Ltd Air cleaner for motor-bike
JPS61147361U (en) * 1985-03-05 1986-09-11

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5123763U (en) * 1974-08-07 1976-02-21
JPS56110551A (en) * 1980-02-07 1981-09-01 Suzuki Motor Co Ltd Air cleaner for motor-bike
JPS61147361U (en) * 1985-03-05 1986-09-11

Also Published As

Publication number Publication date
JP2562288B2 (en) 1996-12-11

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