JPS6157110U - - Google Patents
Info
- Publication number
- JPS6157110U JPS6157110U JP14155884U JP14155884U JPS6157110U JP S6157110 U JPS6157110 U JP S6157110U JP 14155884 U JP14155884 U JP 14155884U JP 14155884 U JP14155884 U JP 14155884U JP S6157110 U JPS6157110 U JP S6157110U
- Authority
- JP
- Japan
- Prior art keywords
- cam
- valve
- pair
- camshaft
- cam profile
- 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
- 230000000284 resting effect Effects 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 2
- 238000002485 combustion reaction Methods 0.000 claims 1
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
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0475—Hollow camshafts
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
第１図から第３図は一対のバルブの一方を休止
させることの可能な本考案の動弁機構の実施例を
示し、第４図から第６図は側圧を低減させた構成
を示し、第７図から第９図はバルブリフタを放射
状配置した実施例を示し、第１０図は放射状配置
の他の例を示し、第１１図および第１２図はカム
シヤフト制御機構を示し、第１３図から第１６図
はバルブ対の双方を休止させることの可能な配置
を示し、第１７図ａおよびｂはカムの正面図およ
び側面図、第１８図から第２０図はバルブリフタ
の一部切欠き側面図、第２１図は本考案の動弁機
構と従来の動弁機構とにおける吸入バルブ作用角
×バルブリフト量を種々のエンジン回転数につい
て対比して示すグラフである。
１０…カムシヤフト、１２，５４，８６…主カ
ム、１４…副カム、１６，３４，３８…主バルブ
リフタ、１８，３６…副バルブリフタ、２０，２
８…ヒール部、２２…超低速用カムプロフイル、
２４…超高速用カムプロフイル、２６…カムノー
ズ、３２…休止用カムプロフイル。
1 to 3 show an embodiment of the valve mechanism of the present invention that is capable of stopping one of a pair of valves, and FIGS. 4 to 6 show a configuration in which side pressure is reduced; 7 to 9 show an embodiment in which the valve lifters are arranged radially, FIG. 10 shows another example of the radial arrangement, FIGS. 11 and 12 show the camshaft control mechanism, and FIGS. The figures show possible arrangements for resting both valve pairs, Figures 17a and b are front and side views of the cam, Figures 18 to 20 are partially cutaway side views of the valve lifter; FIG. 21 is a graph showing a comparison of intake valve operating angle x valve lift amount for various engine speeds in the valve train of the present invention and the conventional valve train. 10...Camshaft, 12,54,86...Main cam, 14...Sub-cam, 16,34,38...Main valve lifter, 18,36...Sub-valve lifter, 20,2
8...heel part, 22...ultra low speed cam profile,
24... Cam profile for super high speed, 26... Cam nose, 32... Cam profile for rest.
Claims (1)
にエンジン本体に軸支し、前記カムシヤフトをク
ランク軸に同期して回転駆動する手段を設け、前
記カムシヤフトにはエンジンの各気筒ごとに一対
のカムを設け、前記カムシヤフトには各気筒ごと
に一対設けた吸気または排気バルブに夫々連動す
る一対のカムフオロアを夫々摺接せしめ、前記カ
ム対の一方にはバルブリフトがゼロとなるバルブ
休止用カムプロフイルを備え超低速用カムプロフ
イルから超高速用カムプロフイルへと漸変するカ
ムプロフイルを備えた複合カムプロフイルを形成
し、エンジン運転条件に応じてカムシヤフトを軸
方向に移動させる手段を設け、もつて、エンジン
運転条件に応じてバルブタイミングおよびバルブ
リフトを可変とすると共にバルブ対のいずれか一
方を休止させることを可能にした、３バルブまた
は４バルブエンジン用可変バルブタイミング・可
変バルブリフト型動弁機構。 ２ 前記カムフオロアの軸線はカムの最大リフト
カムプロフイルに対しほぼ垂直に配置し、もつて
、側圧を低減するようにした実用新案登録請求の
範囲第１項記載の動弁機構。 ３ 前記カムフオロアの軸線は燃焼室に関し放射
状に配置した実用新案登録請求の範囲第１項記載
の動弁機構。 ４ 前記カム対の他方のカムにも前記複合カムプ
ロフイルを形成し、バルブ対の双方を休止させる
ことを可能にした実用新案登録請求の範囲第１項
記載の動弁機構。 ５ 前記カム対の一方のカムを他方のカムに対し
て移動させる手段を設けて成る実用新案登録請求
の範囲第１項記載の動弁機構。[Claims for Utility Model Registration] 1. A camshaft is rotatably and axially movably supported on an engine body, and means is provided for rotationally driving the camshaft in synchronization with a crankshaft, and the camshaft is provided with means for rotating each cylinder of the engine. A pair of cams are provided for each cylinder, and the camshaft has a pair of cam followers that are respectively linked to a pair of intake or exhaust valves provided for each cylinder in sliding contact, and one of the cam pairs has a valve that has a valve lift of zero. A composite cam profile is formed that includes a cam profile for resting and a cam profile that gradually changes from a cam profile for ultra-low speeds to a cam profile for ultra-high speeds, and means for moving the camshaft in the axial direction according to engine operating conditions is provided. , a variable valve timing/variable valve lift type for 3-valve or 4-valve engines that makes it possible to vary valve timing and valve lift according to engine operating conditions and to pause either one of the valve pairs. Valve mechanism. 2. The valve train mechanism according to claim 1, wherein the axis of the cam follower is arranged substantially perpendicular to the maximum lift cam profile of the cam, thereby reducing side pressure. 3. The valve train mechanism according to claim 1, wherein the axis of the cam follower is arranged radially with respect to the combustion chamber. 4. The valve train mechanism according to claim 1, wherein the other cam of the cam pair is also formed with the composite cam profile, making it possible to stop both of the valve pair. 5. The valve train mechanism according to claim 1, which is provided with means for moving one cam of the cam pair relative to the other cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14155884U JPS6157110U (en) | 1984-09-20 | 1984-09-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14155884U JPS6157110U (en) | 1984-09-20 | 1984-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6157110U true JPS6157110U (en) | 1986-04-17 |
Family
ID=30699895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14155884U Pending JPS6157110U (en) | 1984-09-20 | 1984-09-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6157110U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013253482A (en) * | 2012-06-05 | 2013-12-19 | Toyota Motor Corp | Variable valve device |
| JP2015510080A (en) * | 2012-03-08 | 2015-04-02 | ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ | Automotive valve drive adjustment device |
-
1984
- 1984-09-20 JP JP14155884U patent/JPS6157110U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015510080A (en) * | 2012-03-08 | 2015-04-02 | ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ | Automotive valve drive adjustment device |
| US9631523B2 (en) | 2012-03-08 | 2017-04-25 | Daimler Ag | Internal combustion engine valve train adjustment device |
| JP2013253482A (en) * | 2012-06-05 | 2013-12-19 | Toyota Motor Corp | Variable valve device |
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