JPS62162705A - Tappet valve device for 4 cycle engine - Google Patents

Tappet valve device for 4 cycle engine

Info

Publication number
JPS62162705A
JPS62162705A JP472686A JP472686A JPS62162705A JP S62162705 A JPS62162705 A JP S62162705A JP 472686 A JP472686 A JP 472686A JP 472686 A JP472686 A JP 472686A JP S62162705 A JPS62162705 A JP S62162705A
Authority
JP
Japan
Prior art keywords
valves
cam
camshaft
cylinder
center
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
JP472686A
Other languages
Japanese (ja)
Other versions
JP2545506B2 (en
Inventor
Hiroshi Kitagawa
浩 北川
Tatsuya Shinkai
達也 新海
Akihiko Ishihara
昭彦 石原
Kazuyuki Takagaki
高垣　和之
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 JP61004726A priority Critical patent/JP2545506B2/en
Publication of JPS62162705A publication Critical patent/JPS62162705A/en
Application granted granted Critical
Publication of JP2545506B2 publication Critical patent/JP2545506B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/024—Belt drive
    • 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
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/08—Endless member is a chain
    • 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
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/18—DOHC [Double overhead camshaft]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

PURPOSE:To make an engine smaller and less expensive, by disposing suction and exhaust valves in an axial direction of a crank of a 2 cylinder engine, disposing respective cam shafts on the 2 valves at the outer side and driving them and driving the valves at the center by a common cam shaft to reduce a number of cam shafts. CONSTITUTION:Suction and exhaust valves 4 of an engine having cylinders 1 and 2 disposed in parallel are disposed in an axial direction of a crank shaft. The vales 4 at opposite sides are driven by cam shafts 6, 7 mounted on them. the valves 4 at the center are driven by cams 11, 12 of a cam shaft 10 disposed between both the valves. The valves at the center can be driven only by providing the single common can shaft 10.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、四サイクルエンジンの動弁装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a valve train for a four-stroke engine.

〔従来の技術とその問題点〕[Conventional technology and its problems]

四サイクルエンジンでは、一つのシリンダーの吸気弁と
排気弁の上端に被着したタペットの直上に各々カムシャ
フトのカムを配置し、カムシャフトのカムの回転で、弁
を開閉するようにしたものがある。この型の動弁装δを
、通称ＤＯＨＣ（ダブル、オーバー、ヘッド、カム）型
と称している。In a four-stroke engine, a camshaft cam is placed directly above the tappet attached to the upper end of the intake valve and exhaust valve of one cylinder, and the valves are opened and closed by the rotation of the cam of the camshaft. be. This type of valve gear δ is commonly referred to as a DOHC (double, over, head, cam) type.

この型は、動弁系のメカニカルロスが小さく、高性能エ
ンジンにできることが知られている。しかし、一つのシ
リンダーに対して、二本のカムシャフトが必要であるの
で、シリンダーヘッドが大型になり、部品点数も多くて
、■轡が重くなり、製造コストが高くつく不都合がある
。This type has low mechanical loss in the valve train and is known to be able to produce high-performance engines. However, since two camshafts are required for one cylinder, the cylinder head becomes large and has a large number of parts, resulting in heavy weight and high manufacturing costs.

〔発明の目的〕[Purpose of the invention]

この発明は、二つのシリンダーの四つの弁を、三本のカ
ムシャフトで開閉し、エンジンの高性能化を図りながら
、シリンダーヘッドが小型にでき、部品点数も少くて、
軽♀で安１市に製作できる四り一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 opens and closes four valves in two cylinders using three camshafts, improving the performance of the engine, making the cylinder head smaller, and reducing the number of parts.
The purpose is to obtain a valve train for a four-stroke engine that can be manufactured in one city in a light-sized vehicle.

〔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.

二つのシリンダー１．２を前後に配置する。各々のシリ
ンダー１．２の上のシリンダーヘッド３には、傘形の吸
気及び排気を行う弁４が一対設けてあり、合弁４には、
上端にタペット５が被着しである。前側のシリンダー１
の前側のタペット５と、後側のシリンダー２の後側のタ
ペット５の直上には、各々カムシャフト６．７のカム８
，９を配置する。前側シリンダー１の後側のタペット５
と後側のシリンダー２の前側のタペット５は、各々中央
に寄せて、横方向に並べるように設けてあって、その直
上に第三のカムシャフト１０のカム１１．１２を配置す
る。三本のカムシャフト６゜７．１０は、一つのチエン
１３等で、クランク軸に連動するように連結する。Two cylinders 1.2 are placed one behind the other. The cylinder head 3 above each cylinder 1.2 is provided with a pair of umbrella-shaped intake and exhaust valves 4;
A tappet 5 is attached to the upper end. front cylinder 1
Directly above the front tappet 5 of the cylinder 2 and the rear tappet 5 of the rear cylinder 2 are the cams 8 of the camshaft 6.7, respectively.
, 9 are placed. Rear tappet 5 of front cylinder 1
The front tappets 5 of the rear cylinder 2 and the front tappets 5 of the rear cylinder 2 are arranged in a horizontally aligned manner, and the cams 11, 12 of the third camshaft 10 are arranged directly above them. The three camshafts 6°7.10 are connected to the crankshaft through one chain 13 or the like.

〔発明の作用〕[Action of the invention]

三つのカムシャフト６．７．１０は、一つのチエン１３
等で、同時に駆動され、カム８，９゜１１．１２は、各
々回転によって、四つのタペット５を押下げて開閉する
。即ち、二列のシリンダー１．２に設けられた四つの弁
４のタペット５を、三木のカムシャフト６．７．１０で
間１ｆｌできる。Three camshafts 6.7.10 are connected to one chain 13
etc., and the cams 8, 9, 11, and 12 are rotated to push down the four tappets 5 to open and close them. That is, the tappets 5 of the four valves 4 provided in the two rows of cylinders 1.2 can be moved 1 fl by the Miki camshaft 6.7.10.

このため、カムシャフトを一本少くすることができ、シ
リンダーヘッド３を小型化できて、部品点数も減り、軽
量で、安価に製作できる。Therefore, the number of camshafts can be reduced by one, the cylinder head 3 can be made smaller, the number of parts can be reduced, and it can be manufactured lightweight and inexpensively.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明は、二つのシリンダーを
前後に並べ、両側の離れた弁のタペットの直上に各々カ
ムシャフトを配置してカムでｆｉｌｌ！Ｉｔし、中央の
二つの弁のタペットの直上に第三のカムシャフトを設け
て、第三のカムシャフトのカムで開閉し、三つのカムシ
ャフトをチエンで連動するようにしたので、カムシャフ
トを一本減らして部品点数を削減でき、シリンダーヘッ
ドを小型化できて、軽量で安価に製作できる。As explained above, in this invention, two cylinders are arranged one behind the other, camshafts are placed directly above the tappets of separate valves on both sides, and the cams are used to fill the cylinders! In addition, a third camshaft was installed directly above the tappets of the two central valves, and the cams of the third camshaft opened and closed, and the three camshafts were linked by a chain, so the camshaft By reducing the number of parts by one, the cylinder head can be made smaller, lighter and cheaper to manufacture.

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

図は本発明の一実施例を示し、第１図は側面図、第２図
は平面図である。 １・・・シリンダー、２・・・シリンダー、４・・・弁
、５・・・タペット、６・・・カムシャフト、７・・・
カムシャフト、８・・・カム、９・・・カム、１０・・
・カムシャフト、１１・・・カム、１２・・・カム、１
３・・・チエン。 出願人代理人　　藤　　本　　博　　先筒　２　図The figures show one embodiment of the present invention, with FIG. 1 being a side view and FIG. 2 being a plan view. 1... Cylinder, 2... Cylinder, 4... Valve, 5... Tappet, 6... Camshaft, 7...
Camshaft, 8...cam, 9...cam, 10...
・Camshaft, 11...Cam, 12...Cam, 1
3... Chien. Applicant's agent Hiroshi Fujimoto Send tube 2 Figure

Claims (1)

【特許請求の範囲】[Claims] 二つのシリンダーを前後に並べ、両側の離れた弁のタペ
ットの直上に各々カムシャフトを配置してカムで開閉し
、中央の二つの弁のタペットの直上に第三のカムシャフ
トを設けて、第三のカムシャフトのカムで開閉し、三つ
のカムシャフトをチエン等で連動させるようにしたこと
を特徴とする四サイクルエンジンの動弁装置。Two cylinders are lined up one after the other, and a camshaft is placed directly above the tappets of the valves on both sides to open and close them using cams, and a third camshaft is placed directly above the tappets of the two valves in the center. A valve train for a four-cycle engine, characterized in that the valve is opened and closed by the cams of three camshafts, and the three camshafts are linked by a chain or the like.
JP61004726A 1986-01-13 1986-01-13 Four-cycle engine valve drive Expired - Lifetime JP2545506B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61004726A JP2545506B2 (en) 1986-01-13 1986-01-13 Four-cycle engine valve drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61004726A JP2545506B2 (en) 1986-01-13 1986-01-13 Four-cycle engine valve drive

Publications (2)

Publication Number Publication Date
JPS62162705A true JPS62162705A (en) 1987-07-18
JP2545506B2 JP2545506B2 (en) 1996-10-23

Family

ID=11591897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61004726A Expired - Lifetime JP2545506B2 (en) 1986-01-13 1986-01-13 Four-cycle engine valve drive

Country Status (1)

Country Link
JP (1) JP2545506B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6274104U (en) * 1985-10-29 1987-05-12

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6274104U (en) * 1985-10-29 1987-05-12

Also Published As

Publication number Publication date
JP2545506B2 (en) 1996-10-23

Similar Documents

Publication Publication Date Title
JPH0219521Y2 (en)
US5560329A (en) Valvetrain for a pushrod engine
JP2750415B2 (en) Valve train for multi-valve engine
JPS62162705A (en) Tappet valve device for 4 cycle engine
JPH0141807B2 (en)
JPH0375723B2 (en)
JPH0423090B2 (en)
JPH0130567Y2 (en)
JPS6024913Y2 (en) internal combustion engine
US7228833B2 (en) Rocker system for an internal combustion engine
JPS6329121Y2 (en)
JPS6318722Y2 (en)
KR100305447B1 (en) Intake/exhaust valve device of engine
JPH0228502U (en)
JPH0245444Y2 (en)
JPS62191610A (en) Exhaust system device of internal combustion engine
JPH0138241Y2 (en)
JPH0159404B2 (en)
JPS60159316A (en) Multi-cylinder four-cycle engine
JPS6138321B2 (en)
JPS6210408A (en) Roller valve type four-cycle engine
SU1225901A1 (en) Gas distribution mechanism
JPH01134009A (en) Dohc engine
JPS6022027A (en) Relative combustion type internal-combustion engine causing semi-circular motion
JPS62162704A (en) Tappet valve device for 4 cycle engine