JPS63150404A - Valve system of v-type 4-cycle engine - Google Patents

Valve system of v-type 4-cycle engine

Info

Publication number
JPS63150404A
JPS63150404A JP29819986A JP29819986A JPS63150404A JP S63150404 A JPS63150404 A JP S63150404A JP 29819986 A JP29819986 A JP 29819986A JP 29819986 A JP29819986 A JP 29819986A JP S63150404 A JPS63150404 A JP S63150404A
Authority
JP
Japan
Prior art keywords
valve
cylinder
exhaust
inclination angle
length
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
JP29819986A
Other languages
Japanese (ja)
Other versions
JPH0799082B2 (en
Inventor
Shigeaki Hamada
浜田　茂明
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.)
Suzuki Motor Corp
Original Assignee
Suzuki Motor Corp
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 Suzuki Motor Corp filed Critical Suzuki Motor Corp
Priority to JP29819986A priority Critical patent/JPH0799082B2/en
Publication of JPS63150404A publication Critical patent/JPS63150404A/en
Publication of JPH0799082B2 publication Critical patent/JPH0799082B2/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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

PURPOSE:To reduce engine width and to improve inspiration efficiency by making an inclination angle of a suction valve to the center line of a cylinder, the length of the suction valve and angles of a suction port and an exhaust port thereto different from one another. CONSTITUTION:In a V-engine disposed V-shaped with respect to a crankshaft 2 of a cylinder 1, an inclination angle alpha1 of a suction valve 3 to the center line C of the cylinder is set smaller than an inclination angle alphaE of an exhaust valve 4. The length H of the suction valve 3 is made longer than the length HE of an exhaust valve. Further an angle beta1, of a suction port 11 to the center line C of the cylinder is made smaller than en angle betaE of an exhaust port 12. Thus outward projection of a cylinder head 5 of the outlet valve 4 is decreased to achieve the reduction a an engine width L. Further the curvature of the suction port 11 is made smaller to improve inspiration efficiency and increase output.

Description

【発明の詳細な説明】 （産業上の利用分野） この発明は、エンジンの巾を小さくできるようにしたＶ
、型四サイクルエンジンの動弁装置に関する。Detailed Description of the Invention (Field of Industrial Application) This invention provides a V
, relates to a valve train for a four-cycle engine.

（従来の技術とその問題点〕 四サイクルエンジンで、気筒数が多い場合、直列に並べ
るとエンジン長さが長くなるので、シリンダーをＶ型に
配置して、エンジン長さを短くするようにしている。Ｖ
型の場合は、シリンダーが両側にｖ型に配置されるので
横巾が大きくなる。(Conventional technology and its problems) When a four-cycle engine has a large number of cylinders, the length of the engine becomes longer if they are arranged in series, so the cylinders are arranged in a V-shape to shorten the length of the engine. There is.V
In the case of a mold, the cylinders are arranged in a v-shape on both sides, so the width is large.

特にシリンダーの上に重ねるシリンダーヘッドに取付け
られる吸排気弁は、シリンダー中心線に対してほぼ対称
に配置されるのが誘過で、吸気孔の曲がりが大きく、排
気側が両外側に突出して、横巾を大きくする。■型の両
側のシリンダーの配置角度を狭くするにも限界があって
横巾が大きくなる不都合がある。例えば、実開昭６０−
６１４４７号公報、特開昭５８−５１２０７号公報参照
。In particular, the intake and exhaust valves installed in the cylinder head stacked on top of the cylinder are arranged almost symmetrically with respect to the cylinder center line. Increase width. ■There is a limit to narrowing the arrangement angle of the cylinders on both sides of the mold, which inconveniently increases the width. For example, in 1987-
See JP-A No. 61447 and Japanese Unexamined Patent Publication No. 58-51207.

〔発明の目的〕[Purpose of the invention]

この発明は、Ｖ型四サイクルエンジンのシリンダーヘッ
ドに取付ける、吸排気弁の傾き角及び良さを変え、吸排
気孔角度を変えることによって、エンジン中を小さくす
ると共に吸気効率も向上できるＶ型口サイクルエンジン
の動弁装置を得ることを゛目的とする。This invention is a V-type four-stroke cycle engine that can reduce the internal size of the engine and improve intake efficiency by changing the inclination angle and quality of the intake and exhaust valves attached to the cylinder head of the V-type four-cycle engine, and changing the angle of the intake and exhaust holes. The purpose of this invention is to obtain a valve train of the following type.

〔発明の構成〕[Structure of the invention]

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

Ｖ型エンジンは、シリンダー１がクランクシャフト２に
対し、Ｖ型に両側に配置される。そして、両側のシリン
ダー１の上面には、吸気弁３、排気弁４等を備えたシリ
ンダーヘッド５が連結され、シリンダーヘッド５の上面
にはヘッドカバー６が被着される。しかして本発明は、
シリンダー中心ｉａｃに対する吸気弁３の傾き角α１と
し排気弁４の傾き角α　として、α　くαＥになるよう
に、Ｅ　　　　　　　　　　　１ 吸気弁３側の傾き角α１を排気弁４の傾き角α。In a V-type engine, cylinders 1 are arranged on both sides of a crankshaft 2 in a V-shape. A cylinder head 5 including an intake valve 3, an exhaust valve 4, etc. is connected to the upper surface of the cylinder 1 on both sides, and a head cover 6 is attached to the upper surface of the cylinder head 5. However, the present invention
Let the inclination angle α1 of the intake valve 3 with respect to the cylinder center iac be the inclination angle α of the exhaust valve 4, and set the inclination angle α1 on the E 1 intake valve 3 side to the inclination angle α of the exhaust valve 4 so that α is equal to αE.

より小さくする。又、吸気弁３の長さＨｌを排気弁４の
長さＨＥより長くする。尚、吸気弁３は、カムシャフト
７のカム８の回転で開閉され、排気弁４は、カムシャフ
ト９のカム１０の回転で開閉される。又、シリンダー中
心線Ｃに対する吸気孔１１の角度β　を排気孔１２の角
度βＥより小さ■ くする。Make it smaller. Also, the length Hl of the intake valve 3 is made longer than the length HE of the exhaust valve 4. The intake valve 3 is opened and closed by the rotation of the cam 8 of the camshaft 7, and the exhaust valve 4 is opened and closed by the rotation of the cam 10 of the camshaft 9. Also, the angle β of the intake hole 11 with respect to the cylinder center line C is made smaller than the angle βE of the exhaust hole 12.

〔発明の作用〕[Action of the invention]

排気弁４の長さＨＥが、吸気・弁３の長さ１−＋１より
短いので、シリンダーヘッド５の外側への張出しを少な
くできて、エンジン巾りを小さく小型にできる。又、吸
気弁３の傾き角α１を排気弁４の傾き角α、より小さく
し、吸気孔１１の角度βＩを排気孔１２の角度βＥより
小さくしたので、吸気孔１１の曲りを小さくできて、吸
気がスムースに流れ、吸気効率を向上して、出力アップ
を図ることができる。Since the length HE of the exhaust valve 4 is shorter than the length 1-+1 of the intake/valve 3, the outward protrusion of the cylinder head 5 can be reduced, and the engine width can be made small and compact. Also, since the inclination angle α1 of the intake valve 3 is made smaller than the inclination angle α of the exhaust valve 4, and the angle βI of the intake hole 11 is made smaller than the angle βE of the exhaust hole 12, the bending of the intake hole 11 can be made smaller. Intake air flows smoothly, improving intake efficiency and increasing output.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明は、シリンダーをＶ型に
配置した■型口サイクルエンジンに於いて、シリンダー
中心線Ｃに対する吸気弁の傾き角α　を排気弁の傾き角
α、より小さくし、吸気弁の長さＨを排気弁の長さＨ５
より長くし、シリ■ ンダー中心線Ｃに対する吸気孔角度βＩを排気孔角度β
［より小さくしたので、エンジンの巾りを小さく小型に
できると共に、吸気孔の曲りを少なくできて、吸気効率
を高めることによって、エンジン出力の増加を図ること
ができる。As explained above, the present invention has been developed by making the inclination angle α of the intake valve with respect to the cylinder center line C smaller than the inclination angle α of the exhaust valve in a ■-type mouth cycle engine in which the cylinders are arranged in a V-shape. The length of the valve H is the length of the exhaust valve H5
The intake hole angle βI with respect to the cylinder center line C is changed to the exhaust hole angle β.
[Since it is made smaller, the width of the engine can be made smaller and the bending of the intake hole can be reduced, and the intake efficiency can be increased, thereby increasing the engine output.

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

図は本発明の一実施例を示す要部縦断正面図である。 ３・・・吸気弁、４・・・排気弁、１１・・・吸気孔、
１２・・・排気孔、Ｃ・・・シリンダー中心線、α１川
吸気弁の傾き角、α、・・・排気弁の傾き角、Ｈｌ・・
・吸気弁の長さ、ＨＥ・・・排気弁の長さ、βＩ・・・
吸気孔角度、βＥ・・・排気孔角度。The figure is a longitudinal sectional front view of essential parts showing an embodiment of the present invention. 3... Intake valve, 4... Exhaust valve, 11... Intake hole,
12...Exhaust hole, C...Cylinder center line, α1 River intake valve inclination angle, α,...Exhaust valve inclination angle, Hl...
・Intake valve length, HE...Exhaust valve length, βI...
Intake hole angle, βE...Exhaust hole angle.

Claims (1)

【特許請求の範囲】[Claims] シリンダーをＶ型に配置したＶ型四サイクルエンジンに
於いて、シリンダー中心線Ｃに対する吸気弁の傾き角α
＿Ｉを排気弁の傾き角α＿Ｅより小さくし、吸気弁の長
さＨ＿Ｉを排気弁の長さＨ＿Ｅより長くし、シリンダー
中心線Ｃに対する吸気孔角度β＿Ｉを排気孔角度β＿Ｅ
より小さくしたことを特徴とするＶ型四サイクルエンジ
ンの動弁装置。In a V-type four-stroke engine with cylinders arranged in a V-shape, the inclination angle α of the intake valve with respect to the cylinder center line C is
__I is made smaller than the exhaust valve inclination angle α_E, the intake valve length H_I is made longer than the exhaust valve length H_E, and the intake hole angle β_I with respect to the cylinder centerline C is made the exhaust hole angle β_E.
A valve train for a V-type four-stroke engine, which is characterized by being smaller.
JP29819986A 1986-12-15 1986-12-15 Valve drive for V-type four-cycle engine Expired - Fee Related JPH0799082B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29819986A JPH0799082B2 (en) 1986-12-15 1986-12-15 Valve drive for V-type four-cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29819986A JPH0799082B2 (en) 1986-12-15 1986-12-15 Valve drive for V-type four-cycle engine

Publications (2)

Publication Number Publication Date
JPS63150404A true JPS63150404A (en) 1988-06-23
JPH0799082B2 JPH0799082B2 (en) 1995-10-25

Family

ID=17856497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29819986A Expired - Fee Related JPH0799082B2 (en) 1986-12-15 1986-12-15 Valve drive for V-type four-cycle engine

Country Status (1)

Country Link
JP (1) JPH0799082B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0311108A (en) * 1989-06-07 1991-01-18 Yamaha Motor Co Ltd Valve system of four cycle engine
US5351663A (en) * 1992-08-20 1994-10-04 Mazda Motor Corporation V-type engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0311108A (en) * 1989-06-07 1991-01-18 Yamaha Motor Co Ltd Valve system of four cycle engine
US5351663A (en) * 1992-08-20 1994-10-04 Mazda Motor Corporation V-type engine

Also Published As

Publication number Publication date
JPH0799082B2 (en) 1995-10-25

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